add rss feed title

Add tags for the context name and engine ID

.circleci/config.yml

@@ -0,0 +1,219 @@
+---
+defaults:
+  defaults: &defaults
+    working_directory: '/go/src/github.com/influxdata/telegraf'
+    environment:
+      GOFLAGS: -p=8
+  go-1_13: &go-1_13
+    docker:
+      - image: 'quay.io/influxdb/telegraf-ci:1.13.11'
+  go-1_14: &go-1_14
+    docker:
+      - image: 'quay.io/influxdb/telegraf-ci:1.14.3'
+  mac: &mac
+    macos:
+      xcode: 11.3.1
+    working_directory: '~/go/src/github.com/influxdata/telegraf'
+    environment:
+      HOMEBREW_NO_AUTO_UPDATE: 1
+      GOFLAGS: -p=8
+
+version: 2
+jobs:
+  deps:
+    <<: [ *defaults, *go-1_14 ]
+    steps:
+      - checkout
+      - restore_cache:
+          key: go-mod-v1-{{ checksum "go.sum" }}
+      - run: 'make deps'
+      - run: 'make tidy'
+      - save_cache:
+          name: 'go module cache'
+          key: go-mod-v1-{{ checksum "go.sum" }}
+          paths:
+            - '/go/pkg/mod'
+      - persist_to_workspace:
+          root: '/go'
+          paths:
+            - '*'
+  macdeps:
+    <<: [ *mac ]
+    steps:
+      - checkout
+      - restore_cache:
+          key: mac-go-mod-v1-{{ checksum "go.sum" }}
+      - run: 'brew install go@1.13'
+      - run: 'make deps'
+      - run: 'make tidy'
+      - save_cache:
+          name: 'go module cache'
+          key: mac-go-mod-v1-{{ checksum "go.sum" }}
+          paths:
+            - '~/go/pkg/mod'
+            - '/usr/local/Cellar/go'
+            - '/usr/local/bin/go'
+            - '/usr/local/bin/gofmt'
+      - persist_to_workspace:
+          root: '/'
+          paths:
+            - 'usr/local/bin/go'
+            - 'usr/local/Cellar/go'
+            - 'usr/local/bin/gofmt'
+            - 'Users/distiller/go'
+
+  test-go-1.13:
+    <<: [ *defaults, *go-1_13 ]
+    steps:
+      - attach_workspace:
+          at: '/go'
+      - run: 'make'
+      - run: 'make test'
+  test-go-1.13-386:
+    <<: [ *defaults, *go-1_13 ]
+    steps:
+      - attach_workspace:
+          at: '/go'
+      - run: 'GOARCH=386 make'
+      - run: 'GOARCH=386 make test'
+  test-go-1.14:
+    <<: [ *defaults, *go-1_14 ]
+    steps:
+      - attach_workspace:
+          at: '/go'
+      - run: 'make'
+      - run: 'make check'
+      - run: 'make check-deps'
+      - run: 'make test'
+  test-go-1.14-386:
+    <<: [ *defaults, *go-1_14 ]
+    steps:
+      - attach_workspace:
+          at: '/go'
+      - run: 'GOARCH=386 make'
+      - run: 'GOARCH=386 make check'
+      - run: 'GOARCH=386 make test'
+  test-go-1.13-darwin:
+    <<: [ *mac ]
+    steps:
+      - attach_workspace:
+          at: '/'
+      - run: 'make'
+      - run: 'make check'
+      - run: 'make test'
+
+  package:
+    <<: [ *defaults, *go-1_14 ]
+    steps:
+      - attach_workspace:
+          at: '/go'
+      - run: 'make package'
+      - store_artifacts:
+          path: './build'
+          destination: 'build'
+  release:
+    <<: [ *defaults, *go-1_14 ]
+    steps:
+      - attach_workspace:
+          at: '/go'
+      - run: 'make package-release'
+      - store_artifacts:
+          path: './build'
+          destination: 'build'
+  nightly:
+    <<: [ *defaults, *go-1_14 ]
+    steps:
+      - attach_workspace:
+          at: '/go'
+      - run: 'make package-nightly'
+      - store_artifacts:
+          path: './build'
+          destination: 'build'
+
+workflows:
+  version: 2
+  check:
+    jobs:
+      - 'macdeps':
+          filters:
+            tags:
+              only: /.*/
+      - 'deps':
+          filters:
+            tags:
+              only: /.*/
+      - 'test-go-1.13':
+          requires:
+            - 'deps'
+          filters:
+            tags:
+              only: /.*/
+      - 'test-go-1.13-386':
+          requires:
+            - 'deps'
+          filters:
+            tags:
+              only: /.*/
+      - 'test-go-1.14':
+          requires:
+            - 'deps'
+          filters:
+            tags:
+              only: /.*/
+      - 'test-go-1.14-386':
+          requires:
+            - 'deps'
+          filters:
+            tags:
+              only: /.*/
+      - 'test-go-1.13-darwin':
+          requires:
+            - 'macdeps'
+          filters:
+            tags: # only runs on tags if you specify this filter
+              only: /.*/
+      - 'package':
+          requires:
+            - 'test-go-1.13'
+            - 'test-go-1.13-386'
+            - 'test-go-1.14'
+            - 'test-go-1.14-386'
+      - 'release':
+          requires:
+            - 'test-go-1.13'
+            - 'test-go-1.13-386'
+            - 'test-go-1.14'
+            - 'test-go-1.14-386'
+          filters:
+            tags:
+              only: /.*/
+            branches:
+              ignore: /.*/
+  nightly:
+    jobs:
+      - 'deps'
+      - 'test-go-1.13':
+          requires:
+            - 'deps'
+      - 'test-go-1.13-386':
+          requires:
+            - 'deps'
+      - 'test-go-1.14':
+          requires:
+            - 'deps'
+      - 'test-go-1.14-386':
+          requires:
+            - 'deps'
+      - 'nightly':
+          requires:
+            - 'test-go-1.13'
+            - 'test-go-1.13-386'
+            - 'test-go-1.14'
+            - 'test-go-1.14-386'
+    triggers:
+      - schedule:
+          cron: "0 7 * * *"
+          filters:
+            branches:
+              only:
+                - master

.gitattributes

@@ -1,4 +1,5 @@
 CHANGELOG.md merge=union
 README.md merge=union
+go.sum merge=union
 plugins/inputs/all/all.go merge=union
 plugins/outputs/all/all.go merge=union

.github/ISSUE_TEMPLATE.md

@@ -1,44 +0,0 @@
-## Directions
-
-GitHub Issues are reserved for actionable bug reports and feature requests.
-General questions should be sent to the [InfluxDB mailing list](https://groups.google.com/forum/#!forum/influxdb).
-
-Before opening an issue, search for similar bug reports or feature requests on GitHub Issues.
-If no similar issue can be found, fill out either the "Bug Report" or the "Feature Request" section below.
-Erase the other section and everything on and above this line.
-
-*Please note, the quickest way to fix a bug is to open a Pull Request.*
-
-## Bug report
-
-### Relevant telegraf.conf:
-
-### System info:
-
-[Include Telegraf version, operating system name, and other relevant details]
-
-### Steps to reproduce:
-
-1. ...
-2. ...
-
-### Expected behavior:
-
-### Actual behavior:
-
-### Additional info:
-
-[Include gist of relevant config, logs, etc.]
-
-
-## Feature Request
-
-Opening a feature request kicks off a discussion.
-
-### Proposal:
-
-### Current behavior:
-
-### Desired behavior:
-
-### Use case: [Why is this important (helps with prioritizing requests)]

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -0,0 +1,45 @@
+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+<!--
+Please redirect any questions about Telegraf usage to the InfluxData Community
+site: https://community.influxdata.com
+
+Check the documentation for the related plugin including the troubleshooting
+section if available.
+-->
+
+### Relevant telegraf.conf:
+<!-- Place config in the toml code section. -->
+```toml
+
+```
+
+### System info:
+
+<!-- Include Telegraf version, operating system, and other relevant details -->
+
+### Docker
+
+<!-- If your bug involves third party dependencies or services, it can be very helpful to provide a Dockerfile or docker-compose.yml that reproduces the environment you're testing against -->
+
+### Steps to reproduce:
+
+<!-- Describe the steps to reproduce the bug. -->
+
+1. ...
+2. ...
+
+### Expected behavior:
+
+<!-- Describe what you expected to happen when you performed the above steps. -->
+
+### Actual behavior:
+
+<!-- Describe what actually happened when you performed the above steps. -->
+
+### Additional info:
+
+<!-- Include gist of relevant config, logs, etc. -->

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+## Feature Request
+
+Opening a feature request kicks off a discussion.
+
+### Proposal:
+
+### Current behavior:
+
+### Desired behavior:
+
+### Use case: <!-- [Why is this important (helps with prioritizing requests)] -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,5 @@
 ### Required for all PRs:
 
-- [ ] CHANGELOG.md updated (we recommend not updating this until the PR has been approved by a maintainer)
+- [ ] Signed [CLA](https://influxdata.com/community/cla/).
-- [ ] Sign [CLA](https://influxdata.com/community/cla/) (if not already signed)
+- [ ] Associated README.md updated.
-- [ ] README.md updated (if adding a new plugin)
+- [ ] Has appropriate unit tests.

.gitignore

@@ -1,7 +1,5 @@
-build
+/build
-tivan
-.vagrant
 /telegraf
-.idea
+/telegraf.exe
-*~
+/telegraf.gz
-*#
+/vendor

CONTRIBUTING.md

@@ -1,305 +1,76 @@
-## Steps for Contributing:
+### Contributing
 
-1. [Sign the CLA](http://influxdb.com/community/cla.html)
+1. [Sign the CLA][cla].
-1. Make changes or write plugin (see below for details)
+1. Open a [new issue][] to discuss the changes you would like to make.  This is
-1. Add your plugin to `plugins/inputs/all/all.go` or `plugins/outputs/all/all.go`
+   not strictly required but it may help reduce the amount of rework you need
-1. If your plugin requires a new Go package,
+   to do later.
-[add it](https://github.com/influxdata/telegraf/blob/master/CONTRIBUTING.md#adding-a-dependency)
+1. Make changes or write plugin using the guidelines in the following
-1. Write a README for your plugin, if it's an input plugin, it should be structured
+   documents:
-like the [input example here](https://github.com/influxdata/telegraf/blob/master/plugins/inputs/EXAMPLE_README.md).
+   - [Input Plugins][inputs]
-Output plugins READMEs are less structured,
+   - [Processor Plugins][processors]
-but any information you can provide on how the data will look is appreciated.
+   - [Aggregator Plugins][aggregators]
-See the [OpenTSDB output](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/opentsdb)
+   - [Output Plugins][outputs]
-for a good example.
+1. Ensure you have added proper unit tests and documentation.
-1. **Optional:** Help users of your plugin by including example queries for populating dashboards. Include these sample queries in the `README.md` for the plugin.
+1. Open a new [pull request][].
-1. **Optional:** Write a [tickscript](https://docs.influxdata.com/kapacitor/v1.0/tick/syntax/) for your plugin and add it to [Kapacitor](https://github.com/influxdata/kapacitor/tree/master/examples/telegraf). Or mention @jackzampolin in a PR comment with some common queries that you would want to alert on and he will write one for you.
 
-## GoDoc
+#### Contributing an External Plugin *(experimental)*
+Input plugins written for internal Telegraf can be run as externally-compiled plugins through the [Execd Input Plugin](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/execd) without having to change the plugin code.
 
-Public interfaces for inputs, outputs, metrics, and the accumulator can be found
+Follow the guidelines of how to integrate your plugin with the [Execd Go Shim](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/execd/shim) to easily compile it as a separate app and run it from the inputs.execd plugin. 
-on the GoDoc
+
+#### Security Vulnerability Reporting
+InfluxData takes security and our users' trust very seriously. If you believe you have found a security issue in any of our
+open source projects, please responsibly disclose it by contacting security@influxdata.com. More details about 
+security vulnerability reporting, 
+including our GPG key, [can be found here](https://www.influxdata.com/how-to-report-security-vulnerabilities/).
+
+### GoDoc
+
+Public interfaces for inputs, outputs, processors, aggregators, metrics,
+and the accumulator can be found in the GoDoc:
 
 [![GoDoc](https://godoc.org/github.com/influxdata/telegraf?status.svg)](https://godoc.org/github.com/influxdata/telegraf)
 
-## Sign the CLA
+### Common development tasks
 
-Before we can merge a pull request, you will need to sign the CLA,
+**Adding a dependency:**
-which can be found [on our website](http://influxdb.com/community/cla.html)
 
-## Adding a dependency
+Telegraf uses Go modules. Assuming you can already build the project, run this in the telegraf directory:
 
-Assuming you can already build the project, run these in the telegraf directory:
+1. `go get github.com/[dependency]/[new-package]`
 
-1. `go get github.com/sparrc/gdm`
+**Unit Tests:**
-1. `gdm restore`
-1. `GOOS=linux gdm save`
 
-## Input Plugins
+Before opening a pull request you should run the linter checks and
-
+the short tests.
-This section is for developers who want to create new collection inputs.
-Telegraf is entirely plugin driven. This interface allows for operators to
-pick and chose what is gathered and makes it easy for developers
-to create new ways of generating metrics.
-
-Plugin authorship is kept as simple as possible to promote people to develop
-and submit new inputs.
-
-### Input Plugin Guidelines
-
-* A plugin must conform to the `telegraf.Input` interface.
-* Input Plugins should call `inputs.Add` in their `init` function to register themselves.
-See below for a quick example.
-* Input Plugins must be added to the
-`github.com/influxdata/telegraf/plugins/inputs/all/all.go` file.
-* The `SampleConfig` function should return valid toml that describes how the
-plugin can be configured. This is include in `telegraf -sample-config`.
-* The `Description` function should say in one line what this plugin does.
-
-Let's say you've written a plugin that emits metrics about processes on the
-current host.
-
-### Input Plugin Example
-
-```go
-package simple
-
-// simple.go
-
-import (
-    "github.com/influxdata/telegraf"
-    "github.com/influxdata/telegraf/plugins/inputs"
-)
-
-type Simple struct {
-    Ok bool
-}
-
-func (s *Simple) Description() string {
-    return "a demo plugin"
-}
-
-func (s *Simple) SampleConfig() string {
-    return "ok = true # indicate if everything is fine"
-}
-
-func (s *Simple) Gather(acc telegraf.Accumulator) error {
-    if s.Ok {
-        acc.AddFields("state", map[string]interface{}{"value": "pretty good"}, nil)
-    } else {
-        acc.AddFields("state", map[string]interface{}{"value": "not great"}, nil)
-    }
-
-    return nil
-}
-
-func init() {
-    inputs.Add("simple", func() telegraf.Input { return &Simple{} })
-}
-```
-
-## Adding Typed Metrics
-
-In addition the the `AddFields` function, the accumulator also supports an
-`AddGauge` and `AddCounter` function. These functions are for adding _typed_
-metrics. Metric types are ignored for the InfluxDB output, but can be used
-for other outputs, such as [prometheus](https://prometheus.io/docs/concepts/metric_types/).
-
-## Input Plugins Accepting Arbitrary Data Formats
-
-Some input plugins (such as
-[exec](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/exec))
-accept arbitrary input data formats. An overview of these data formats can
-be found
-[here](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md).
-
-In order to enable this, you must specify a `SetParser(parser parsers.Parser)`
-function on the plugin object (see the exec plugin for an example), as well as
-defining `parser` as a field of the object.
-
-You can then utilize the parser internally in your plugin, parsing data as you
-see fit. Telegraf's configuration layer will take care of instantiating and
-creating the `Parser` object.
-
-You should also add the following to your SampleConfig() return:
-
-```toml
-  ## Data format to consume.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
-  data_format = "influx"
-```
-
-Below is the `Parser` interface.
-
-```go
-// Parser is an interface defining functions that a parser plugin must satisfy.
-type Parser interface {
-    // Parse takes a byte buffer separated by newlines
-    // ie, `cpu.usage.idle 90\ncpu.usage.busy 10`
-    // and parses it into telegraf metrics
-    Parse(buf []byte) ([]telegraf.Metric, error)
-
-    // ParseLine takes a single string metric
-    // ie, "cpu.usage.idle 90"
-    // and parses it into a telegraf metric.
-    ParseLine(line string) (telegraf.Metric, error)
-}
-```
-
-And you can view the code
-[here.](https://github.com/influxdata/telegraf/blob/henrypfhu-master/plugins/parsers/registry.go)
-
-## Service Input Plugins
-
-This section is for developers who want to create new "service" collection
-inputs. A service plugin differs from a regular plugin in that it operates
-a background service while Telegraf is running. One example would be the `statsd`
-plugin, which operates a statsd server.
-
-Service Input Plugins are substantially more complicated than a regular plugin, as they
-will require threads and locks to verify data integrity. Service Input Plugins should
-be avoided unless there is no way to create their behavior with a regular plugin.
-
-Their interface is quite similar to a regular plugin, with the addition of `Start()`
-and `Stop()` methods.
-
-### Service Plugin Guidelines
-
-* Same as the `Plugin` guidelines, except that they must conform to the
-`inputs.ServiceInput` interface.
-
-## Output Plugins
-
-This section is for developers who want to create a new output sink. Outputs
-are created in a similar manner as collection plugins, and their interface has
-similar constructs.
-
-### Output Plugin Guidelines
-
-* An output must conform to the `outputs.Output` interface.
-* Outputs should call `outputs.Add` in their `init` function to register themselves.
-See below for a quick example.
-* To be available within Telegraf itself, plugins must add themselves to the
-`github.com/influxdata/telegraf/plugins/outputs/all/all.go` file.
-* The `SampleConfig` function should return valid toml that describes how the
-output can be configured. This is include in `telegraf -sample-config`.
-* The `Description` function should say in one line what this output does.
-
-### Output Example
-
-```go
-package simpleoutput
-
-// simpleoutput.go
-
-import (
-    "github.com/influxdata/telegraf"
-    "github.com/influxdata/telegraf/plugins/outputs"
-)
-
-type Simple struct {
-    Ok bool
-}
-
-func (s *Simple) Description() string {
-    return "a demo output"
-}
-
-func (s *Simple) SampleConfig() string {
-    return "url = localhost"
-}
-
-func (s *Simple) Connect() error {
-    // Make a connection to the URL here
-    return nil
-}
-
-func (s *Simple) Close() error {
-    // Close connection to the URL here
-    return nil
-}
-
-func (s *Simple) Write(metrics []telegraf.Metric) error {
-    for _, metric := range metrics {
-        // write `metric` to the output sink here
-    }
-    return nil
-}
-
-func init() {
-    outputs.Add("simpleoutput", func() telegraf.Output { return &Simple{} })
-}
 
 ```
-
+make check
-## Output Plugins Writing Arbitrary Data Formats
+make test
-
-Some output plugins (such as
-[file](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/file))
-can write arbitrary output data formats. An overview of these data formats can
-be found
-[here](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md).
-
-In order to enable this, you must specify a
-`SetSerializer(serializer serializers.Serializer)`
-function on the plugin object (see the file plugin for an example), as well as
-defining `serializer` as a field of the object.
-
-You can then utilize the serializer internally in your plugin, serializing data
-before it's written. Telegraf's configuration layer will take care of
-instantiating and creating the `Serializer` object.
-
-You should also add the following to your SampleConfig() return:
-
-```toml
-  ## Data format to output.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
-  data_format = "influx"
 ```
 
-## Service Output Plugins
+**Execute integration tests:**
 
-This section is for developers who want to create new "service" output. A
+(Optional)
-service output differs from a regular output in that it operates a background service
-while Telegraf is running. One example would be the `prometheus_client` output,
-which operates an HTTP server.
 
-Their interface is quite similar to a regular output, with the addition of `Start()`
+Running the integration tests requires several docker containers to be
-and `Stop()` methods.
+running.  You can start the containers with:
+```
+docker-compose up
+```
 
-### Service Output Guidelines
+And run the full test suite with:
+```
+make test-all
+```
 
-* Same as the `Output` guidelines, except that they must conform to the
+Use `make docker-kill` to stop the containers.
-`output.ServiceOutput` interface.
 
-## Unit Tests
 
-### Execute short tests
+[cla]: https://www.influxdata.com/legal/cla/
-
+[new issue]: https://github.com/influxdata/telegraf/issues/new/choose
-execute `make test-short`
+[pull request]: https://github.com/influxdata/telegraf/compare
-
+[inputs]: /docs/INPUTS.md
-### Execute long tests
+[processors]: /docs/PROCESSORS.md
-
+[aggregators]: /docs/AGGREGATORS.md
-As Telegraf collects metrics from several third-party services it becomes a
+[outputs]: /docs/OUTPUTS.md
-difficult task to mock each service as some of them have complicated protocols
-which would take some time to replicate.
-
-To overcome this situation we've decided to use docker containers to provide a
-fast and reproducible environment to test those services which require it.
-For other situations
-(i.e: https://github.com/influxdata/telegraf/blob/master/plugins/inputs/redis/redis_test.go)
-a simple mock will suffice.
-
-To execute Telegraf tests follow these simple steps:
-
-- Install docker following [these](https://docs.docker.com/installation/)
-instructions
-- execute `make test`
-
-### Unit test troubleshooting
-
-Try cleaning up your test environment by executing `make docker-kill` and
-re-running

Dockerfile

@@ -0,0 +1,16 @@
+# Copy of scripts/stretch.docker
+FROM golang:1.13.8 as builder
+WORKDIR /go/src/github.com/influxdata/telegraf
+
+COPY . /go/src/github.com/influxdata/telegraf
+RUN make go-install
+
+FROM buildpack-deps:stretch-curl
+COPY --from=builder /go/bin/* /usr/bin/
+COPY etc/telegraf.conf /etc/telegraf/telegraf.conf
+
+EXPOSE 8125/udp 8092/udp 8094
+
+COPY scripts/docker-entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["telegraf"]

EXTERNAL_PLUGINS.md

@@ -0,0 +1,9 @@
+# External Plugins
+
+This is a list of plugins that can be compiled outside of Telegraf and used via the execd input.
+
+Pull requests welcome.
+
+## Inputs
+- [rand](https://github.com/ssoroka/rand) - Generate random numbers
+- [twitter](https://github.com/inabagumi/twitter-telegraf-plugin) - Gather account information from Twitter accounts

Godeps

@@ -1,65 +0,0 @@
-github.com/Shopify/sarama 8aadb476e66ca998f2f6bb3c993e9a2daa3666b9
-github.com/Sirupsen/logrus 219c8cb75c258c552e999735be6df753ffc7afdc
-github.com/aerospike/aerospike-client-go 7f3a312c3b2a60ac083ec6da296091c52c795c63
-github.com/amir/raidman 53c1b967405155bfc8758557863bf2e14f814687
-github.com/aws/aws-sdk-go 13a12060f716145019378a10e2806c174356b857
-github.com/beorn7/perks 3ac7bf7a47d159a033b107610db8a1b6575507a4
-github.com/cenkalti/backoff 4dc77674aceaabba2c7e3da25d4c823edfb73f99
-github.com/couchbase/go-couchbase cb664315a324d87d19c879d9cc67fda6be8c2ac1
-github.com/couchbase/gomemcached a5ea6356f648fec6ab89add00edd09151455b4b2
-github.com/couchbase/goutils 5823a0cbaaa9008406021dc5daf80125ea30bba6
-github.com/dancannon/gorethink e7cac92ea2bc52638791a021f212145acfedb1fc
-github.com/davecgh/go-spew 5215b55f46b2b919f50a1df0eaa5886afe4e3b3d
-github.com/docker/engine-api 8924d6900370b4c7e7984be5adc61f50a80d7537
-github.com/docker/go-connections f549a9393d05688dff0992ef3efd8bbe6c628aeb
-github.com/docker/go-units 5d2041e26a699eaca682e2ea41c8f891e1060444
-github.com/eapache/go-resiliency b86b1ec0dd4209a588dc1285cdd471e73525c0b3
-github.com/eapache/queue ded5959c0d4e360646dc9e9908cff48666781367
-github.com/eclipse/paho.mqtt.golang 0f7a459f04f13a41b7ed752d47944528d4bf9a86
-github.com/go-sql-driver/mysql 1fca743146605a172a266e1654e01e5cd5669bee
-github.com/gobwas/glob 49571a1557cd20e6a2410adc6421f85b66c730b5
-github.com/golang/protobuf 552c7b9542c194800fd493123b3798ef0a832032
-github.com/golang/snappy 427fb6fc07997f43afa32f35e850833760e489a7
-github.com/gonuts/go-shellquote e842a11b24c6abfb3dd27af69a17f482e4b483c2
-github.com/gorilla/context 1ea25387ff6f684839d82767c1733ff4d4d15d0a
-github.com/gorilla/mux c9e326e2bdec29039a3761c07bece13133863e1e
-github.com/hailocab/go-hostpool e80d13ce29ede4452c43dea11e79b9bc8a15b478
-github.com/hashicorp/consul 5aa90455ce78d4d41578bafc86305e6e6b28d7d2
-github.com/hpcloud/tail b2940955ab8b26e19d43a43c4da0475dd81bdb56
-github.com/influxdata/config b79f6829346b8d6e78ba73544b1e1038f1f1c9da
-github.com/influxdata/influxdb e094138084855d444195b252314dfee9eae34cab
-github.com/influxdata/toml af4df43894b16e3fd2b788d01bd27ad0776ef2d0
-github.com/influxdata/wlog 7c63b0a71ef8300adc255344d275e10e5c3a71ec
-github.com/kardianos/osext 29ae4ffbc9a6fe9fb2bc5029050ce6996ea1d3bc
-github.com/kardianos/service 5e335590050d6d00f3aa270217d288dda1c94d0a
-github.com/klauspost/crc32 19b0b332c9e4516a6370a0456e6182c3b5036720
-github.com/lib/pq e182dc4027e2ded4b19396d638610f2653295f36
-github.com/matttproud/golang_protobuf_extensions d0c3fe89de86839aecf2e0579c40ba3bb336a453
-github.com/miekg/dns cce6c130cdb92c752850880fd285bea1d64439dd
-github.com/mreiferson/go-snappystream 028eae7ab5c4c9e2d1cb4c4ca1e53259bbe7e504
-github.com/naoina/go-stringutil 6b638e95a32d0c1131db0e7fe83775cbea4a0d0b
-github.com/nats-io/nats ea8b4fd12ebb823073c0004b9f09ac8748f4f165
-github.com/nats-io/nuid a5152d67cf63cbfb5d992a395458722a45194715
-github.com/nsqio/go-nsq 0b80d6f05e15ca1930e0c5e1d540ed627e299980
-github.com/opencontainers/runc 89ab7f2ccc1e45ddf6485eaa802c35dcf321dfc8
-github.com/prometheus/client_golang 18acf9993a863f4c4b40612e19cdd243e7c86831
-github.com/prometheus/client_model fa8ad6fec33561be4280a8f0514318c79d7f6cb6
-github.com/prometheus/common e8eabff8812b05acf522b45fdcd725a785188e37
-github.com/prometheus/procfs 406e5b7bfd8201a36e2bb5f7bdae0b03380c2ce8
-github.com/samuel/go-zookeeper 218e9c81c0dd8b3b18172b2bbfad92cc7d6db55f
-github.com/shirou/gopsutil 4d0c402af66c78735c5ccf820dc2ca7de5e4ff08
-github.com/soniah/gosnmp eb32571c2410868d85849ad67d1e51d01273eb84
-github.com/streadway/amqp b4f3ceab0337f013208d31348b578d83c0064744
-github.com/stretchr/testify 1f4a1643a57e798696635ea4c126e9127adb7d3c
-github.com/vjeantet/grok 83bfdfdfd1a8146795b28e547a8e3c8b28a466c2
-github.com/wvanbergen/kafka 46f9a1cf3f670edec492029fadded9c2d9e18866
-github.com/wvanbergen/kazoo-go 0f768712ae6f76454f987c3356177e138df258f8
-github.com/yuin/gopher-lua bf3808abd44b1e55143a2d7f08571aaa80db1808
-github.com/zensqlmonitor/go-mssqldb ffe5510c6fa5e15e6d983210ab501c815b56b363
-golang.org/x/crypto 5dc8cb4b8a8eb076cbb5a06bc3b8682c15bdbbd3
-golang.org/x/net 6acef71eb69611914f7a30939ea9f6e194c78172
-golang.org/x/text a71fd10341b064c10f4a81ceac72bcf70f26ea34
-gopkg.in/dancannon/gorethink.v1 7d1af5be49cb5ecc7b177bf387d232050299d6ef
-gopkg.in/fatih/pool.v2 cba550ebf9bce999a02e963296d4bc7a486cb715
-gopkg.in/mgo.v2 d90005c5262a3463800497ea5a89aed5fe22c886
-gopkg.in/yaml.v2 a83829b6f1293c91addabc89d0571c246397bbf4

Godeps_windows

@@ -1,12 +0,0 @@
-github.com/Microsoft/go-winio ce2922f643c8fd76b46cadc7f404a06282678b34
-github.com/StackExchange/wmi f3e2bae1e0cb5aef83e319133eabfee30013a4a5
-github.com/go-ole/go-ole be49f7c07711fcb603cff39e1de7c67926dc0ba7
-github.com/lxn/win 950a0e81e7678e63d8e6cd32412bdecb325ccd88
-github.com/shirou/w32 3c9377fc6748f222729a8270fe2775d149a249ad
-golang.org/x/sys a646d33e2ee3172a661fc09bca23bb4889a41bc8
-github.com/go-ini/ini 9144852efba7c4daf409943ee90767da62d55438
-github.com/jmespath/go-jmespath bd40a432e4c76585ef6b72d3fd96fb9b6dc7b68d
-github.com/pmezard/go-difflib/difflib 792786c7400a136282c1664665ae0a8db921c6c2
-github.com/stretchr/objx 1a9d0bb9f541897e62256577b352fdbc1fb4fd94
-gopkg.in/fsnotify.v1 a8a77c9133d2d6fd8334f3260d06f60e8d80a5fb
-gopkg.in/tomb.v1 dd632973f1e7218eb1089048e0798ec9ae7dceb8

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 InfluxDB
+Copyright (c) 2015-2019 InfluxData Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -1,96 +1,155 @@
-VERSION := $(shell sh -c 'git describe --always --tags')
+ifeq ($(OS), Windows_NT)
-BRANCH := $(shell sh -c 'git rev-parse --abbrev-ref HEAD')
+	VERSION := $(shell git describe --exact-match --tags 2>nul)
-COMMIT := $(shell sh -c 'git rev-parse HEAD')
+	HOME := $(HOMEPATH)
+	CGO_ENABLED ?= 0
+	export CGO_ENABLED
+else
+	VERSION := $(shell git describe --exact-match --tags 2>/dev/null)
+endif
+
+PREFIX := /usr/local
+BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
+COMMIT := $(shell git rev-parse --short HEAD)
+GOFILES ?= $(shell git ls-files '*.go')
+GOFMT ?= $(shell gofmt -l -s $(filter-out plugins/parsers/influx/machine.go, $(GOFILES)))
+BUILDFLAGS ?=
+
 ifdef GOBIN
 PATH := $(GOBIN):$(PATH)
 else
-PATH := $(subst :,/bin:,$(GOPATH))/bin:$(PATH)
+PATH := $(subst :,/bin:,$(shell go env GOPATH))/bin:$(PATH)
 endif
 
-# Standard Telegraf build
+LDFLAGS := $(LDFLAGS) -X main.commit=$(COMMIT) -X main.branch=$(BRANCH)
-default: prepare build
+ifdef VERSION
+	LDFLAGS += -X main.version=$(VERSION)
+endif
 
-# Windows build
+.PHONY: all
-windows: prepare-windows build-windows
+all:
+	@$(MAKE) --no-print-directory deps
+	@$(MAKE) --no-print-directory telegraf
 
-# Only run the build (no dependency grabbing)
+.PHONY: deps
-build:
+deps:
-	go install -ldflags \
+	go mod download
-		"-X main.version=$(VERSION) -X main.commit=$(COMMIT) -X main.branch=$(BRANCH)" ./...
 
-build-windows:
+.PHONY: telegraf
-	GOOS=windows GOARCH=amd64 go build -o telegraf.exe -ldflags \
+telegraf:
-		"-X main.version=$(VERSION) -X main.commit=$(COMMIT) -X main.branch=$(BRANCH)" \
+	go build -ldflags "$(LDFLAGS)" ./cmd/telegraf
-		./cmd/telegraf/telegraf.go
 
-build-for-docker:
+.PHONY: go-install
-	CGO_ENABLED=0 GOOS=linux go build -installsuffix cgo -o telegraf -ldflags \
+go-install:
-		"-s -X main.version=$(VERSION) -X main.commit=$(COMMIT) -X main.branch=$(BRANCH)" \
+	go install -ldflags "-w -s $(LDFLAGS)" ./cmd/telegraf
-		./cmd/telegraf/telegraf.go
 
-# run package script
+.PHONY: install
-package:
+install: telegraf
-	./scripts/build.py --package --version="$(VERSION)" --platform=linux --arch=all --upload
+	mkdir -p $(DESTDIR)$(PREFIX)/bin/
+	cp telegraf $(DESTDIR)$(PREFIX)/bin/
 
-# Get dependencies and use gdm to checkout changesets
+.PHONY: test
-prepare:
+test:
-	go get github.com/sparrc/gdm
-	gdm restore
-
-# Use the windows godeps file to prepare dependencies
-prepare-windows:
-	go get github.com/sparrc/gdm
-	gdm restore
-	gdm restore -f Godeps_windows
-
-# Run all docker containers necessary for unit tests
-docker-run:
-	docker run --name aerospike -p "3000:3000" -d aerospike/aerospike-server:3.9.0
-	docker run --name kafka \
-		-e ADVERTISED_HOST=localhost \
-		-e ADVERTISED_PORT=9092 \
-		-p "2181:2181" -p "9092:9092" \
-		-d spotify/kafka
-	docker run --name mysql -p "3306:3306" -e MYSQL_ALLOW_EMPTY_PASSWORD=yes -d mysql
-	docker run --name memcached -p "11211:11211" -d memcached
-	docker run --name postgres -p "5432:5432" -d postgres
-	docker run --name rabbitmq -p "15672:15672" -p "5672:5672" -d rabbitmq:3-management
-	docker run --name redis -p "6379:6379" -d redis
-	docker run --name nsq -p "4150:4150" -d nsqio/nsq /nsqd
-	docker run --name mqtt -p "1883:1883" -d ncarlier/mqtt
-	docker run --name riemann -p "5555:5555" -d blalor/riemann
-	docker run --name nats -p "4222:4222" -d nats
-
-# Run docker containers necessary for CircleCI unit tests
-docker-run-circle:
-	docker run --name aerospike -p "3000:3000" -d aerospike/aerospike-server:3.9.0
-	docker run --name kafka \
-		-e ADVERTISED_HOST=localhost \
-		-e ADVERTISED_PORT=9092 \
-		-p "2181:2181" -p "9092:9092" \
-		-d spotify/kafka
-	docker run --name nsq -p "4150:4150" -d nsqio/nsq /nsqd
-	docker run --name mqtt -p "1883:1883" -d ncarlier/mqtt
-	docker run --name riemann -p "5555:5555" -d blalor/riemann
-	docker run --name nats -p "4222:4222" -d nats
-
-# Kill all docker containers, ignore errors
-docker-kill:
-	-docker kill nsq aerospike redis rabbitmq postgres memcached mysql kafka mqtt riemann nats
-	-docker rm nsq aerospike redis rabbitmq postgres memcached mysql kafka mqtt riemann nats
-
-# Run full unit tests using docker containers (includes setup and teardown)
-test: vet docker-kill docker-run
-	# Sleeping for kafka leadership election, TSDB setup, etc.
-	sleep 60
-	# SUCCESS, running tests
-	go test -race ./...
-
-# Run "short" unit tests
-test-short: vet
 	go test -short ./...
 
-vet:
+.PHONY: fmt
-	go vet ./...
+fmt:
+	@gofmt -s -w $(filter-out plugins/parsers/influx/machine.go, $(GOFILES))
 
-.PHONY: test test-short vet build default
+.PHONY: fmtcheck
+fmtcheck:
+	@if [ ! -z "$(GOFMT)" ]; then \
+		echo "[ERROR] gofmt has found errors in the following files:"  ; \
+		echo "$(GOFMT)" ; \
+		echo "" ;\
+		echo "Run make fmt to fix them." ; \
+		exit 1 ;\
+	fi
+
+.PHONY: test-windows
+test-windows:
+	go test -short ./plugins/inputs/ping/...
+	go test -short ./plugins/inputs/win_perf_counters/...
+	go test -short ./plugins/inputs/win_services/...
+	go test -short ./plugins/inputs/procstat/...
+	go test -short ./plugins/inputs/ntpq/...
+	go test -short ./plugins/processors/port_name/...
+
+.PHONY: vet
+vet:
+	@echo 'go vet $$(go list ./... | grep -v ./plugins/parsers/influx)'
+	@go vet $$(go list ./... | grep -v ./plugins/parsers/influx) ; if [ $$? -ne 0 ]; then \
+		echo ""; \
+		echo "go vet has found suspicious constructs. Please remediate any reported errors"; \
+		echo "to fix them before submitting code for review."; \
+		exit 1; \
+	fi
+
+.PHONY: tidy
+tidy:
+	go mod verify
+	go mod tidy
+	@if ! git diff --quiet go.mod go.sum; then \
+		echo "please run go mod tidy and check in changes"; \
+		exit 1; \
+	fi
+
+.PHONY: check
+check: fmtcheck vet
+	@$(MAKE) --no-print-directory tidy
+
+.PHONY: test-all
+test-all: fmtcheck vet
+	go test ./...
+
+.PHONY: check-deps
+check-deps:
+	./scripts/check-deps.sh
+
+.PHONY: package
+package:
+	./scripts/build.py --package --platform=all --arch=all
+
+.PHONY: package-release
+package-release:
+	./scripts/build.py --release --package --platform=all --arch=all \
+		--upload --bucket=dl.influxdata.com/telegraf/releases
+
+.PHONY: package-nightly
+package-nightly:
+	./scripts/build.py --nightly --package --platform=all --arch=all \
+		--upload --bucket=dl.influxdata.com/telegraf/nightlies
+
+.PHONY: clean
+clean:
+	rm -f telegraf
+	rm -f telegraf.exe
+
+.PHONY: docker-image
+docker-image:
+	docker build -f scripts/stretch.docker -t "telegraf:$(COMMIT)" .
+
+plugins/parsers/influx/machine.go: plugins/parsers/influx/machine.go.rl
+	ragel -Z -G2 $^ -o $@
+
+.PHONY: static
+static:
+	@echo "Building static linux binary..."
+	@CGO_ENABLED=0 \
+	GOOS=linux \
+	GOARCH=amd64 \
+	go build -ldflags "$(LDFLAGS)" ./cmd/telegraf
+
+.PHONY: plugin-%
+plugin-%:
+	@echo "Starting dev environment for $${$(@)} input plugin..."
+	@docker-compose -f plugins/inputs/$${$(@)}/dev/docker-compose.yml up
+
+.PHONY: ci-1.13
+ci-1.13:
+	docker build -t quay.io/influxdb/telegraf-ci:1.13.8 - < scripts/ci-1.13.docker
+	docker push quay.io/influxdb/telegraf-ci:1.13.8
+
+.PHONY: ci-1.12
+ci-1.12:
+	docker build -t quay.io/influxdb/telegraf-ci:1.12.17 - < scripts/ci-1.12.docker
+	docker push quay.io/influxdb/telegraf-ci:1.12.17

README.md

@@ -1,260 +1,429 @@
 # Telegraf [![Circle CI](https://circleci.com/gh/influxdata/telegraf.svg?style=svg)](https://circleci.com/gh/influxdata/telegraf) [![Docker pulls](https://img.shields.io/docker/pulls/library/telegraf.svg)](https://hub.docker.com/_/telegraf/)
 
-Telegraf is an agent written in Go for collecting metrics from the system it's
+Telegraf is an agent for collecting, processing, aggregating, and writing metrics.
-running on, or from other services, and writing them into InfluxDB or other
-[outputs](https://github.com/influxdata/telegraf#supported-output-plugins).
 
 Design goals are to have a minimal memory footprint with a plugin system so
-that developers in the community can easily add support for collecting metrics
+that developers in the community can easily add support for collecting
-from well known services (like Hadoop, Postgres, or Redis) and third party
+metrics.
-APIs (like Mailchimp, AWS CloudWatch, or Google Analytics).
 
-New input and output plugins are designed to be easy to contribute,
+Telegraf is plugin-driven and has the concept of 4 distinct plugin types:
-we'll eagerly accept pull
+
-requests and will manage the set of plugins that Telegraf supports.
+1. [Input Plugins](#input-plugins) collect metrics from the system, services, or 3rd party APIs
-See the [contributing guide](CONTRIBUTING.md) for instructions on writing
+2. [Processor Plugins](#processor-plugins) transform, decorate, and/or filter metrics
-new plugins.
+3. [Aggregator Plugins](#aggregator-plugins) create aggregate metrics (e.g. mean, min, max, quantiles, etc.)
+4. [Output Plugins](#output-plugins) write metrics to various destinations
+
+New plugins are designed to be easy to contribute, pull requests are welcomed
+and we work to incorporate as many pull requests as possible.
+
+## Try in Browser :rocket:
+
+You can try Telegraf right in your browser in the [Telegraf playground](https://rootnroll.com/d/telegraf/).
+
+## Contributing
+
+There are many ways to contribute:
+- Fix and [report bugs](https://github.com/influxdata/telegraf/issues/new)
+- [Improve documentation](https://github.com/influxdata/telegraf/issues?q=is%3Aopen+label%3Adocumentation)
+- [Review code and feature proposals](https://github.com/influxdata/telegraf/pulls)
+- Answer questions and discuss here on github and on the [Community Site](https://community.influxdata.com/)
+- [Contribute plugins](CONTRIBUTING.md)
+- [Contribute external plugins](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/execd/shim) *(experimental)*
+
+## Minimum Requirements
+
+Telegraf shares the same [minimum requirements][] as Go:
+- Linux kernel version 2.6.23 or later
+- Windows 7 or later
+- FreeBSD 11.2 or later
+- MacOS 10.11 El Capitan or later
+
+[minimum requirements]: https://github.com/golang/go/wiki/MinimumRequirements#minimum-requirements
 
 ## Installation:
 
-### Linux deb and rpm Packages:
+You can download the binaries directly from the [downloads](https://www.influxdata.com/downloads) page
-
+or from the [releases](https://github.com/influxdata/telegraf/releases) section.
-Latest:
-* https://dl.influxdata.com/telegraf/releases/telegraf_1.0.0_amd64.deb
-* https://dl.influxdata.com/telegraf/releases/telegraf-1.0.0.x86_64.rpm
-
-Latest (arm):
-* https://dl.influxdata.com/telegraf/releases/telegraf_1.0.0_armhf.deb
-* https://dl.influxdata.com/telegraf/releases/telegraf-1.0.0.armhf.rpm
-
-##### Package Instructions:
-
-* Telegraf binary is installed in `/usr/bin/telegraf`
-* Telegraf daemon configuration file is in `/etc/telegraf/telegraf.conf`
-* On sysv systems, the telegraf daemon can be controlled via
-`service telegraf [action]`
-* On systemd systems (such as Ubuntu 15+), the telegraf daemon can be
-controlled via `systemctl [action] telegraf`
-
-### yum/apt Repositories:
-
-There is a yum/apt repo available for the whole InfluxData stack, see
-[here](https://docs.influxdata.com/influxdb/v0.10/introduction/installation/#installation)
-for instructions on setting up the repo. Once it is configured, you will be able
-to use this repo to install & update telegraf.
-
-### Linux tarballs:
-
-Latest:
-* https://dl.influxdata.com/telegraf/releases/telegraf-1.0.0_linux_amd64.tar.gz
-* https://dl.influxdata.com/telegraf/releases/telegraf-1.0.0_linux_i386.tar.gz
-* https://dl.influxdata.com/telegraf/releases/telegraf-1.0.0_linux_armhf.tar.gz
-
-### FreeBSD tarball:
-
-Latest:
-* https://dl.influxdata.com/telegraf/releases/telegraf-1.0.0_freebsd_amd64.tar.gz
 
 ### Ansible Role:
 
 Ansible role: https://github.com/rossmcdonald/telegraf
 
-### OSX via Homebrew:
-
-```
-brew update
-brew install telegraf
-```
-
-### Windows Binaries (EXPERIMENTAL)
-
-Latest:
-* https://dl.influxdata.com/telegraf/releases/telegraf-1.0.0_windows_amd64.zip
-
 ### From Source:
 
-Telegraf manages dependencies via [gdm](https://github.com/sparrc/gdm),
+Telegraf requires Go version 1.13 or newer, the Makefile requires GNU make.
-which gets installed via the Makefile
-if you don't have it already. You also must build with golang version 1.5+.
 
-1. [Install Go](https://golang.org/doc/install)
+1. [Install Go](https://golang.org/doc/install) >=1.13 (1.14 recommended)
-2. [Setup your GOPATH](https://golang.org/doc/code.html#GOPATH)
+2. Clone the Telegraf repository:
-3. Run `go get github.com/influxdata/telegraf`
+   ```
-4. Run `cd $GOPATH/src/github.com/influxdata/telegraf`
+   cd ~/src
-5. Run `make`
+   git clone https://github.com/influxdata/telegraf.git
+   ```
+3. Run `make` from the source directory
+   ```
+   cd ~/src/telegraf
+   make
+   ```
+
+### Changelog
+
+View the [changelog](/CHANGELOG.md) for the latest updates and changes by
+version.
+
+### Nightly Builds
+
+These builds are generated from the master branch:
+- [telegraf-nightly_darwin_amd64.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_darwin_amd64.tar.gz)
+- [telegraf_nightly_amd64.deb](https://dl.influxdata.com/telegraf/nightlies/telegraf_nightly_amd64.deb)
+- [telegraf_nightly_arm64.deb](https://dl.influxdata.com/telegraf/nightlies/telegraf_nightly_arm64.deb)
+- [telegraf-nightly.arm64.rpm](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly.arm64.rpm)
+- [telegraf_nightly_armel.deb](https://dl.influxdata.com/telegraf/nightlies/telegraf_nightly_armel.deb)
+- [telegraf-nightly.armel.rpm](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly.armel.rpm)
+- [telegraf_nightly_armhf.deb](https://dl.influxdata.com/telegraf/nightlies/telegraf_nightly_armhf.deb)
+- [telegraf-nightly.armv6hl.rpm](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly.armv6hl.rpm)
+- [telegraf-nightly_freebsd_amd64.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_freebsd_amd64.tar.gz)
+- [telegraf-nightly_freebsd_i386.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_freebsd_i386.tar.gz)
+- [telegraf_nightly_i386.deb](https://dl.influxdata.com/telegraf/nightlies/telegraf_nightly_i386.deb)
+- [telegraf-nightly.i386.rpm](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly.i386.rpm)
+- [telegraf-nightly_linux_amd64.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_linux_amd64.tar.gz)
+- [telegraf-nightly_linux_arm64.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_linux_arm64.tar.gz)
+- [telegraf-nightly_linux_armel.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_linux_armel.tar.gz)
+- [telegraf-nightly_linux_armhf.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_linux_armhf.tar.gz)
+- [telegraf-nightly_linux_i386.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_linux_i386.tar.gz)
+- [telegraf-nightly_linux_s390x.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_linux_s390x.tar.gz)
+- [telegraf_nightly_s390x.deb](https://dl.influxdata.com/telegraf/nightlies/telegraf_nightly_s390x.deb)
+- [telegraf-nightly.s390x.rpm](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly.s390x.rpm)
+- [telegraf-nightly_windows_amd64.zip](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_windows_amd64.zip)
+- [telegraf-nightly_windows_i386.zip](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly_windows_i386.zip)
+- [telegraf-nightly.x86_64.rpm](https://dl.influxdata.com/telegraf/nightlies/telegraf-nightly.x86_64.rpm)
+- [telegraf-static-nightly_linux_amd64.tar.gz](https://dl.influxdata.com/telegraf/nightlies/telegraf-static-nightly_linux_amd64.tar.gz)
 
 ## How to use it:
 
-```console
+See usage with:
-$ telegraf -help
-Telegraf, The plugin-driven server agent for collecting and reporting metrics.
 
-Usage:
+```
-
+telegraf --help
-  telegraf <flags>
-
-The flags are:
-
-  -config <file>     configuration file to load
-  -test              gather metrics once, print them to stdout, and exit
-  -sample-config     print out full sample configuration to stdout
-  -config-directory  directory containing additional *.conf files
-  -input-filter      filter the input plugins to enable, separator is :
-  -output-filter     filter the output plugins to enable, separator is :
-  -usage             print usage for a plugin, ie, 'telegraf -usage mysql'
-  -debug             print metrics as they're generated to stdout
-  -quiet             run in quiet mode
-  -version           print the version to stdout
-
-Examples:
-
-  # generate a telegraf config file:
-  telegraf -sample-config > telegraf.conf
-
-  # generate config with only cpu input & influxdb output plugins defined
-  telegraf -sample-config -input-filter cpu -output-filter influxdb
-
-  # run a single telegraf collection, outputing metrics to stdout
-  telegraf -config telegraf.conf -test
-
-  # run telegraf with all plugins defined in config file
-  telegraf -config telegraf.conf
-
-  # run telegraf, enabling the cpu & memory input, and influxdb output plugins
-  telegraf -config telegraf.conf -input-filter cpu:mem -output-filter influxdb
 ```
 
-## Configuration
+#### Generate a telegraf config file:
 
-See the [configuration guide](docs/CONFIGURATION.md) for a rundown of the more advanced
+```
-configuration options.
+telegraf config > telegraf.conf
+```
 
-## Supported Input Plugins
+#### Generate config with only cpu input & influxdb output plugins defined:
 
-Telegraf currently has support for collecting metrics from many sources. For
+```
-more information on each, please look at the directory of the same name in
+telegraf --section-filter agent:inputs:outputs --input-filter cpu --output-filter influxdb config
-`plugins/inputs`.
+```
 
-Currently implemented sources:
+#### Run a single telegraf collection, outputting metrics to stdout:
 
-* [aws cloudwatch](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/cloudwatch)
+```
-* [aerospike](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/aerospike)
+telegraf --config telegraf.conf --test
-* [apache](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/apache)
+```
-* [bcache](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/bcache)
-* [cassandra](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/cassandra)
-* [ceph](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/ceph)
-* [chrony](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/chrony)
-* [consul](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/consul)
-* [conntrack](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/conntrack)
-* [couchbase](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/couchbase)
-* [couchdb](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/couchdb)
-* [disque](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/disque)
-* [dns query time](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/dns_query)
-* [docker](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/docker)
-* [dovecot](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/dovecot)
-* [elasticsearch](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/elasticsearch)
-* [exec](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/exec) (generic executable plugin, support JSON, influx, graphite and nagios)
-* [filestat](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/filestat)
-* [haproxy](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/haproxy)
-* [hddtemp](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/hddtemp)
-* [http_response](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/http_response)
-* [httpjson](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/httpjson) (generic JSON-emitting http service plugin)
-* [influxdb](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/influxdb)
-* [ipmi_sensor](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/ipmi_sensor)
-* [iptables](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/iptables)
-* [jolokia](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/jolokia)
-* [leofs](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/leofs)
-* [lustre2](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/lustre2)
-* [mailchimp](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/mailchimp)
-* [memcached](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/memcached)
-* [mesos](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/mesos)
-* [mongodb](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/mongodb)
-* [mysql](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/mysql)
-* [net_response](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/net_response)
-* [nginx](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/nginx)
-* [nsq](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/nsq)
-* [nstat](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/nstat)
-* [ntpq](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/ntpq)
-* [phpfpm](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/phpfpm)
-* [phusion passenger](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/passenger)
-* [ping](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/ping)
-* [postgresql](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/postgresql)
-* [postgresql_extensible](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/postgresql_extensible)
-* [powerdns](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/powerdns)
-* [procstat](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/procstat)
-* [prometheus](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/prometheus)
-* [puppetagent](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/puppetagent)
-* [rabbitmq](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/rabbitmq)
-* [raindrops](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/raindrops)
-* [redis](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/redis)
-* [rethinkdb](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/rethinkdb)
-* [riak](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/riak)
-* [sensors](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/sensors)
-* [snmp](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/snmp)
-* [snmp_legacy](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/snmp_legacy)
-* [sql server](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/sqlserver) (microsoft)
-* [twemproxy](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/twemproxy)
-* [varnish](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/varnish)
-* [zfs](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/zfs)
-* [zookeeper](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/zookeeper)
-* [win_perf_counters ](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/win_perf_counters) (windows performance counters)
-* [sysstat](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/sysstat)
-* [system](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/system)
-    * cpu
-    * mem
-    * net
-    * netstat
-    * disk
-    * diskio
-    * swap
-    * processes
-    * kernel (/proc/stat)
-    * kernel (/proc/vmstat)
 
-Telegraf can also collect metrics via the following service plugins:
+#### Run telegraf with all plugins defined in config file:
 
-* [http_listener](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/http_listener)
+```
-* [kafka_consumer](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/kafka_consumer)
+telegraf --config telegraf.conf
-* [mqtt_consumer](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/mqtt_consumer)
+```
-* [nats_consumer](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/nats_consumer)
-* [nsq_consumer](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/nsq_consumer)
-* [logparser](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/logparser)
-* [statsd](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/statsd)
-* [tail](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/tail)
-* [tcp_listener](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/tcp_listener)
-* [udp_listener](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/udp_listener)
-* [webhooks](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/webhooks)
-  * [filestack](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/webhooks/filestack)
-  * [github](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/webhooks/github)
-  * [mandrill](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/webhooks/mandrill)
-  * [rollbar](https://github.com/influxdata/telegraf/tree/master/plugins/inputs/webhooks/rollbar)
 
-We'll be adding support for many more over the coming months. Read on if you
+#### Run telegraf, enabling the cpu & memory input, and influxdb output plugins:
-want to add support for another service or third-party API.
 
-## Supported Output Plugins
+```
+telegraf --config telegraf.conf --input-filter cpu:mem --output-filter influxdb
+```
 
-* [influxdb](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/influxdb)
+## Documentation
-* [amon](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/amon)
-* [amqp](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/amqp)
-* [aws kinesis](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/kinesis)
-* [aws cloudwatch](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/cloudwatch)
-* [datadog](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/datadog)
-* [file](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/file)
-* [graphite](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/graphite)
-* [graylog](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/graylog)
-* [instrumental](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/instrumental)
-* [kafka](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/kafka)
-* [librato](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/librato)
-* [mqtt](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/mqtt)
-* [nats](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/nats)
-* [nsq](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/nsq)
-* [opentsdb](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/opentsdb)
-* [prometheus](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/prometheus_client)
-* [riemann](https://github.com/influxdata/telegraf/tree/master/plugins/outputs/riemann)
 
-## Contributing
+[Latest Release Documentation][release docs].
 
-Please see the
+For documentation on the latest development code see the [documentation index][devel docs].
-[contributing guide](CONTRIBUTING.md)
+
-for details on contributing a plugin to Telegraf.
+[release docs]: https://docs.influxdata.com/telegraf
+[devel docs]: docs
+
+## Input Plugins
+
+* [activemq](./plugins/inputs/activemq)
+* [aerospike](./plugins/inputs/aerospike)
+* [amqp_consumer](./plugins/inputs/amqp_consumer) (rabbitmq)
+* [apache](./plugins/inputs/apache)
+* [apcupsd](./plugins/inputs/apcupsd)
+* [aurora](./plugins/inputs/aurora)
+* [aws cloudwatch](./plugins/inputs/cloudwatch) (Amazon Cloudwatch)
+* [azure_storage_queue](./plugins/inputs/azure_storage_queue)
+* [bcache](./plugins/inputs/bcache)
+* [beanstalkd](./plugins/inputs/beanstalkd)
+* [bind](./plugins/inputs/bind)
+* [bond](./plugins/inputs/bond)
+* [burrow](./plugins/inputs/burrow)
+* [cassandra](./plugins/inputs/cassandra) (deprecated, use [jolokia2](./plugins/inputs/jolokia2))
+* [ceph](./plugins/inputs/ceph)
+* [cgroup](./plugins/inputs/cgroup)
+* [chrony](./plugins/inputs/chrony)
+* [cisco_telemetry_gnmi](./plugins/inputs/cisco_telemetry_gnmi)
+* [cisco_telemetry_mdt](./plugins/inputs/cisco_telemetry_mdt)
+* [clickhouse](./plugins/inputs/clickhouse)
+* [cloud_pubsub](./plugins/inputs/cloud_pubsub) Google Cloud Pub/Sub
+* [cloud_pubsub_push](./plugins/inputs/cloud_pubsub_push) Google Cloud Pub/Sub push endpoint
+* [conntrack](./plugins/inputs/conntrack)
+* [consul](./plugins/inputs/consul)
+* [couchbase](./plugins/inputs/couchbase)
+* [couchdb](./plugins/inputs/couchdb)
+* [cpu](./plugins/inputs/cpu)
+* [DC/OS](./plugins/inputs/dcos)
+* [diskio](./plugins/inputs/diskio)
+* [disk](./plugins/inputs/disk)
+* [disque](./plugins/inputs/disque)
+* [dmcache](./plugins/inputs/dmcache)
+* [dns query time](./plugins/inputs/dns_query)
+* [docker](./plugins/inputs/docker)
+* [docker_log](./plugins/inputs/docker_log)
+* [dovecot](./plugins/inputs/dovecot)
+* [aws ecs](./plugins/inputs/ecs) (Amazon Elastic Container Service, Fargate)
+* [elasticsearch](./plugins/inputs/elasticsearch)
+* [ethtool](./plugins/inputs/ethtool)
+* [eventhub_consumer](./plugins/inputs/eventhub_consumer) (Azure Event Hubs \& Azure IoT Hub)
+* [exec](./plugins/inputs/exec) (generic executable plugin, support JSON, influx, graphite and nagios)
+* [execd](./plugins/inputs/execd)
+* [fail2ban](./plugins/inputs/fail2ban)
+* [fibaro](./plugins/inputs/fibaro)
+* [file](./plugins/inputs/file)
+* [filestat](./plugins/inputs/filestat)
+* [filecount](./plugins/inputs/filecount)
+* [fireboard](/plugins/inputs/fireboard)
+* [fluentd](./plugins/inputs/fluentd)
+* [github](./plugins/inputs/github)
+* [graylog](./plugins/inputs/graylog)
+* [haproxy](./plugins/inputs/haproxy)
+* [hddtemp](./plugins/inputs/hddtemp)
+* [httpjson](./plugins/inputs/httpjson) (generic JSON-emitting http service plugin)
+* [http_listener](./plugins/inputs/influxdb_listener) (deprecated, renamed to [influxdb_listener](/plugins/inputs/influxdb_listener))
+* [http_listener_v2](./plugins/inputs/http_listener_v2)
+* [http](./plugins/inputs/http) (generic HTTP plugin, supports using input data formats)
+* [http_response](./plugins/inputs/http_response)
+* [icinga2](./plugins/inputs/icinga2)
+* [infiniband](./plugins/inputs/infiniband)
+* [influxdb](./plugins/inputs/influxdb)
+* [influxdb_listener](./plugins/inputs/influxdb_listener)
+* [internal](./plugins/inputs/internal)
+* [interrupts](./plugins/inputs/interrupts)
+* [ipmi_sensor](./plugins/inputs/ipmi_sensor)
+* [ipset](./plugins/inputs/ipset)
+* [iptables](./plugins/inputs/iptables)
+* [ipvs](./plugins/inputs/ipvs)
+* [jenkins](./plugins/inputs/jenkins)
+* [jolokia2](./plugins/inputs/jolokia2) (java, cassandra, kafka)
+* [jolokia](./plugins/inputs/jolokia) (deprecated, use [jolokia2](./plugins/inputs/jolokia2))
+* [jti_openconfig_telemetry](./plugins/inputs/jti_openconfig_telemetry)
+* [kafka_consumer](./plugins/inputs/kafka_consumer)
+* [kapacitor](./plugins/inputs/kapacitor)
+* [aws kinesis](./plugins/inputs/kinesis_consumer) (Amazon Kinesis)
+* [kernel](./plugins/inputs/kernel)
+* [kernel_vmstat](./plugins/inputs/kernel_vmstat)
+* [kibana](./plugins/inputs/kibana)
+* [kubernetes](./plugins/inputs/kubernetes)
+* [kube_inventory](./plugins/inputs/kube_inventory)
+* [lanz](./plugins/inputs/lanz)
+* [leofs](./plugins/inputs/leofs)
+* [linux_sysctl_fs](./plugins/inputs/linux_sysctl_fs)
+* [logparser](./plugins/inputs/logparser) (deprecated, use [tail](/plugins/inputs/tail))
+* [logstash](./plugins/inputs/logstash)
+* [lustre2](./plugins/inputs/lustre2)
+* [mailchimp](./plugins/inputs/mailchimp)
+* [marklogic](./plugins/inputs/marklogic)
+* [mcrouter](./plugins/inputs/mcrouter)
+* [memcached](./plugins/inputs/memcached)
+* [mem](./plugins/inputs/mem)
+* [mesos](./plugins/inputs/mesos)
+* [minecraft](./plugins/inputs/minecraft)
+* [modbus](./plugins/inputs/modbus)
+* [mongodb](./plugins/inputs/mongodb)
+* [monit](./plugins/inputs/monit)
+* [mqtt_consumer](./plugins/inputs/mqtt_consumer)
+* [multifile](./plugins/inputs/multifile)
+* [mysql](./plugins/inputs/mysql)
+* [nats_consumer](./plugins/inputs/nats_consumer)
+* [nats](./plugins/inputs/nats)
+* [neptune_apex](./plugins/inputs/neptune_apex)
+* [net](./plugins/inputs/net)
+* [net_response](./plugins/inputs/net_response)
+* [netstat](./plugins/inputs/net)
+* [nginx](./plugins/inputs/nginx)
+* [nginx_plus_api](./plugins/inputs/nginx_plus_api)
+* [nginx_plus](./plugins/inputs/nginx_plus)
+* [nginx_upstream_check](./plugins/inputs/nginx_upstream_check)
+* [nginx_vts](./plugins/inputs/nginx_vts)
+* [nsq_consumer](./plugins/inputs/nsq_consumer)
+* [nsq](./plugins/inputs/nsq)
+* [nstat](./plugins/inputs/nstat)
+* [ntpq](./plugins/inputs/ntpq)
+* [nvidia_smi](./plugins/inputs/nvidia_smi)
+* [openldap](./plugins/inputs/openldap)
+* [openntpd](./plugins/inputs/openntpd)
+* [opensmtpd](./plugins/inputs/opensmtpd)
+* [openweathermap](./plugins/inputs/openweathermap)
+* [pf](./plugins/inputs/pf)
+* [pgbouncer](./plugins/inputs/pgbouncer)
+* [phpfpm](./plugins/inputs/phpfpm)
+* [phusion passenger](./plugins/inputs/passenger)
+* [ping](./plugins/inputs/ping)
+* [postfix](./plugins/inputs/postfix)
+* [postgresql_extensible](./plugins/inputs/postgresql_extensible)
+* [postgresql](./plugins/inputs/postgresql)
+* [powerdns](./plugins/inputs/powerdns)
+* [powerdns_recursor](./plugins/inputs/powerdns_recursor)
+* [processes](./plugins/inputs/processes)
+* [procstat](./plugins/inputs/procstat)
+* [prometheus](./plugins/inputs/prometheus) (can be used for [Caddy server](./plugins/inputs/prometheus/README.md#usage-for-caddy-http-server))
+* [puppetagent](./plugins/inputs/puppetagent)
+* [rabbitmq](./plugins/inputs/rabbitmq)
+* [raindrops](./plugins/inputs/raindrops)
+* [redis](./plugins/inputs/redis)
+* [rethinkdb](./plugins/inputs/rethinkdb)
+* [riak](./plugins/inputs/riak)
+* [salesforce](./plugins/inputs/salesforce)
+* [sensors](./plugins/inputs/sensors)
+* [sflow](./plugins/inputs/sflow)
+* [smart](./plugins/inputs/smart)
+* [snmp_legacy](./plugins/inputs/snmp_legacy)
+* [snmp](./plugins/inputs/snmp)
+* [snmp_trap](./plugins/inputs/snmp_trap)
+* [socket_listener](./plugins/inputs/socket_listener)
+* [solr](./plugins/inputs/solr)
+* [sql server](./plugins/inputs/sqlserver) (microsoft)
+* [stackdriver](./plugins/inputs/stackdriver) (Google Cloud Monitoring)
+* [statsd](./plugins/inputs/statsd)
+* [suricata](./plugins/inputs/suricata)
+* [swap](./plugins/inputs/swap)
+* [synproxy](./plugins/inputs/synproxy)
+* [syslog](./plugins/inputs/syslog)
+* [sysstat](./plugins/inputs/sysstat)
+* [systemd_units](./plugins/inputs/systemd_units)
+* [system](./plugins/inputs/system)
+* [tail](./plugins/inputs/tail)
+* [temp](./plugins/inputs/temp)
+* [tcp_listener](./plugins/inputs/socket_listener)
+* [teamspeak](./plugins/inputs/teamspeak)
+* [tengine](./plugins/inputs/tengine)
+* [tomcat](./plugins/inputs/tomcat)
+* [twemproxy](./plugins/inputs/twemproxy)
+* [udp_listener](./plugins/inputs/socket_listener)
+* [unbound](./plugins/inputs/unbound)
+* [uwsgi](./plugins/inputs/uwsgi)
+* [varnish](./plugins/inputs/varnish)
+* [vsphere](./plugins/inputs/vsphere) VMware vSphere
+* [webhooks](./plugins/inputs/webhooks)
+  * [filestack](./plugins/inputs/webhooks/filestack)
+  * [github](./plugins/inputs/webhooks/github)
+  * [mandrill](./plugins/inputs/webhooks/mandrill)
+  * [papertrail](./plugins/inputs/webhooks/papertrail)
+  * [particle](./plugins/inputs/webhooks/particle)
+  * [rollbar](./plugins/inputs/webhooks/rollbar)
+* [win_perf_counters](./plugins/inputs/win_perf_counters) (windows performance counters)
+* [win_services](./plugins/inputs/win_services)
+* [wireguard](./plugins/inputs/wireguard)
+* [wireless](./plugins/inputs/wireless)
+* [x509_cert](./plugins/inputs/x509_cert)
+* [zfs](./plugins/inputs/zfs)
+* [zipkin](./plugins/inputs/zipkin)
+* [zookeeper](./plugins/inputs/zookeeper)
+
+## Parsers
+
+- [InfluxDB Line Protocol](/plugins/parsers/influx)
+- [Collectd](/plugins/parsers/collectd)
+- [CSV](/plugins/parsers/csv)
+- [Dropwizard](/plugins/parsers/dropwizard)
+- [FormUrlencoded](/plugins/parser/form_urlencoded)
+- [Graphite](/plugins/parsers/graphite)
+- [Grok](/plugins/parsers/grok)
+- [JSON](/plugins/parsers/json)
+- [Logfmt](/plugins/parsers/logfmt)
+- [Nagios](/plugins/parsers/nagios)
+- [Value](/plugins/parsers/value), ie: 45 or "booyah"
+- [Wavefront](/plugins/parsers/wavefront)
+
+## Serializers
+
+- [InfluxDB Line Protocol](/plugins/serializers/influx)
+- [JSON](/plugins/serializers/json)
+- [Graphite](/plugins/serializers/graphite)
+- [ServiceNow](/plugins/serializers/nowmetric)
+- [SplunkMetric](/plugins/serializers/splunkmetric)
+- [Carbon2](/plugins/serializers/carbon2)
+- [Wavefront](/plugins/serializers/wavefront)
+
+## Processor Plugins
+
+* [clone](/plugins/processors/clone)
+* [converter](/plugins/processors/converter)
+* [date](/plugins/processors/date)
+* [dedup](/plugins/processors/dedup)
+* [defaults](/plugins/processors/defaults)
+* [enum](/plugins/processors/enum)
+* [filepath](/plugins/processors/filepath)
+* [override](/plugins/processors/override)
+* [parser](/plugins/processors/parser)
+* [pivot](/plugins/processors/pivot)
+* [printer](/plugins/processors/printer)
+* [regex](/plugins/processors/regex)
+* [rename](/plugins/processors/rename)
+* [s2geo](/plugins/processors/s2geo)
+* [strings](/plugins/processors/strings)
+* [tag_limit](/plugins/processors/tag_limit)
+* [template](/plugins/processors/template)
+* [topk](/plugins/processors/topk)
+* [unpivot](/plugins/processors/unpivot)
+
+## Aggregator Plugins
+
+* [basicstats](./plugins/aggregators/basicstats)
+* [final](./plugins/aggregators/final)
+* [histogram](./plugins/aggregators/histogram)
+* [merge](./plugins/aggregators/merge)
+* [minmax](./plugins/aggregators/minmax)
+* [valuecounter](./plugins/aggregators/valuecounter)
+
+## Output Plugins
+
+* [influxdb](./plugins/outputs/influxdb) (InfluxDB 1.x)
+* [influxdb_v2](./plugins/outputs/influxdb_v2) ([InfluxDB 2.x](https://github.com/influxdata/influxdb))
+* [amon](./plugins/outputs/amon)
+* [amqp](./plugins/outputs/amqp) (rabbitmq)
+* [application_insights](./plugins/outputs/application_insights)
+* [aws kinesis](./plugins/outputs/kinesis)
+* [aws cloudwatch](./plugins/outputs/cloudwatch)
+* [azure_monitor](./plugins/outputs/azure_monitor)
+* [cloud_pubsub](./plugins/outputs/cloud_pubsub) Google Cloud Pub/Sub
+* [cratedb](./plugins/outputs/cratedb)
+* [datadog](./plugins/outputs/datadog)
+* [discard](./plugins/outputs/discard)
+* [elasticsearch](./plugins/outputs/elasticsearch)
+* [exec](./plugins/outputs/exec)
+* [file](./plugins/outputs/file)
+* [graphite](./plugins/outputs/graphite)
+* [graylog](./plugins/outputs/graylog)
+* [health](./plugins/outputs/health)
+* [http](./plugins/outputs/http)
+* [instrumental](./plugins/outputs/instrumental)
+* [kafka](./plugins/outputs/kafka)
+* [librato](./plugins/outputs/librato)
+* [mqtt](./plugins/outputs/mqtt)
+* [nats](./plugins/outputs/nats)
+* [newrelic](./plugins/outputs/newrelic)
+* [nsq](./plugins/outputs/nsq)
+* [opentsdb](./plugins/outputs/opentsdb)
+* [prometheus](./plugins/outputs/prometheus_client)
+* [riemann](./plugins/outputs/riemann)
+* [riemann_legacy](./plugins/outputs/riemann_legacy)
+* [socket_writer](./plugins/outputs/socket_writer)
+* [stackdriver](./plugins/outputs/stackdriver) (Google Cloud Monitoring)
+* [syslog](./plugins/outputs/syslog)
+* [tcp](./plugins/outputs/socket_writer)
+* [udp](./plugins/outputs/socket_writer)
+* [warp10](./plugins/outputs/warp10)
+* [wavefront](./plugins/outputs/wavefront)

accumulator.go

@@ -1,17 +1,14 @@
 package telegraf
 
-import "time"
+import (
+	"time"
+)
 
-// Accumulator is an interface for "accumulating" metrics from input plugin(s).
+// Accumulator allows adding metrics to the processing flow.
-// The metrics are sent down a channel shared between all input plugins and then
-// flushed on the configured flush_interval.
 type Accumulator interface {
 	// AddFields adds a metric to the accumulator with the given measurement
 	// name, fields, and tags (and timestamp). If a timestamp is not provided,
 	// then the accumulator sets it to "now".
-	// Create a point with a value, decorating it with tags
-	// NOTE: tags is expected to be owned by the caller, don't mutate
-	// it after passing to Add.
 	AddFields(measurement string,
 		fields map[string]interface{},
 		tags map[string]string,
@@ -29,12 +26,60 @@ type Accumulator interface {
 		tags map[string]string,
 		t ...time.Time)
 
+	// AddSummary is the same as AddFields, but will add the metric as a "Summary" type
+	AddSummary(measurement string,
+		fields map[string]interface{},
+		tags map[string]string,
+		t ...time.Time)
+
+	// AddHistogram is the same as AddFields, but will add the metric as a "Histogram" type
+	AddHistogram(measurement string,
+		fields map[string]interface{},
+		tags map[string]string,
+		t ...time.Time)
+
+	// AddMetric adds an metric to the accumulator.
+	AddMetric(Metric)
+
+	// SetPrecision sets the timestamp rounding precision.  All metrics addeds
+	// added to the accumulator will have their timestamp rounded to the
+	// nearest multiple of precision.
+	SetPrecision(precision time.Duration)
+
+	// Report an error.
 	AddError(err error)
 
-	Debug() bool
+	// Upgrade to a TrackingAccumulator with space for maxTracked
-	SetDebug(enabled bool)
+	// metrics/batches.
-
+	WithTracking(maxTracked int) TrackingAccumulator
-	SetPrecision(precision, interval time.Duration)
+}
-
+
-	DisablePrecision()
+// TrackingID uniquely identifies a tracked metric group
+type TrackingID uint64
+
+// DeliveryInfo provides the results of a delivered metric group.
+type DeliveryInfo interface {
+	// ID is the TrackingID
+	ID() TrackingID
+
+	// Delivered returns true if the metric was processed successfully.
+	Delivered() bool
+}
+
+// TrackingAccumulator is an Accumulator that provides a signal when the
+// metric has been fully processed.  Sending more metrics than the accumulator
+// has been allocated for without reading status from the Accepted or Rejected
+// channels is an error.
+type TrackingAccumulator interface {
+	Accumulator
+
+	// Add the Metric and arrange for tracking feedback after processing..
+	AddTrackingMetric(m Metric) TrackingID
+
+	// Add a group of Metrics and arrange for a signal when the group has been
+	// processed.
+	AddTrackingMetricGroup(group []Metric) TrackingID
+
+	// Delivered returns a channel that will contain the tracking results.
+	Delivered() <-chan DeliveryInfo
 }

agent/accumulator.go

@@ -1,41 +1,34 @@
 package agent
 
 import (
-	"fmt"
-	"log"
-	"math"
-	"sync/atomic"
 	"time"
 
 	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/internal/models"
+	"github.com/influxdata/telegraf/metric"
 )
 
-func NewAccumulator(
+type MetricMaker interface {
-	inputConfig *models.InputConfig,
+	LogName() string
-	metrics chan telegraf.Metric,
+	MakeMetric(metric telegraf.Metric) telegraf.Metric
-) *accumulator {
+	Log() telegraf.Logger
-	acc := accumulator{}
-	acc.metrics = metrics
-	acc.inputConfig = inputConfig
-	acc.precision = time.Nanosecond
-	return &acc
 }
 
 type accumulator struct {
-	metrics chan telegraf.Metric
+	maker     MetricMaker
-
+	metrics   chan<- telegraf.Metric
-	defaultTags map[string]string
-
-	debug bool
-	// print every point added to the accumulator
-	trace bool
-
-	inputConfig *models.InputConfig
-
 	precision time.Duration
+}
 
-	errCount uint64
+func NewAccumulator(
+	maker MetricMaker,
+	metrics chan<- telegraf.Metric,
+) telegraf.Accumulator {
+	acc := accumulator{
+		maker:     maker,
+		metrics:   metrics,
+		precision: time.Nanosecond,
+	}
+	return &acc
 }
 
 func (ac *accumulator) AddFields(
@@ -44,9 +37,7 @@ func (ac *accumulator) AddFields(
 	tags map[string]string,
 	t ...time.Time,
 ) {
-	if m := ac.makeMetric(measurement, fields, tags, telegraf.Untyped, t...); m != nil {
+	ac.addFields(measurement, tags, fields, telegraf.Untyped, t...)
-		ac.metrics <- m
-	}
 }
 
 func (ac *accumulator) AddGauge(
@@ -55,9 +46,7 @@ func (ac *accumulator) AddGauge(
 	tags map[string]string,
 	t ...time.Time,
 ) {
-	if m := ac.makeMetric(measurement, fields, tags, telegraf.Gauge, t...); m != nil {
+	ac.addFields(measurement, tags, fields, telegraf.Gauge, t...)
-		ac.metrics <- m
-	}
 }
 
 func (ac *accumulator) AddCounter(
@@ -66,112 +55,48 @@ func (ac *accumulator) AddCounter(
 	tags map[string]string,
 	t ...time.Time,
 ) {
-	if m := ac.makeMetric(measurement, fields, tags, telegraf.Counter, t...); m != nil {
+	ac.addFields(measurement, tags, fields, telegraf.Counter, t...)
+}
+
+func (ac *accumulator) AddSummary(
+	measurement string,
+	fields map[string]interface{},
+	tags map[string]string,
+	t ...time.Time,
+) {
+	ac.addFields(measurement, tags, fields, telegraf.Summary, t...)
+}
+
+func (ac *accumulator) AddHistogram(
+	measurement string,
+	fields map[string]interface{},
+	tags map[string]string,
+	t ...time.Time,
+) {
+	ac.addFields(measurement, tags, fields, telegraf.Histogram, t...)
+}
+
+func (ac *accumulator) AddMetric(m telegraf.Metric) {
+	m.SetTime(m.Time().Round(ac.precision))
+	if m := ac.maker.MakeMetric(m); m != nil {
 		ac.metrics <- m
 	}
 }
 
-// makeMetric either returns a metric, or returns nil if the metric doesn't
+func (ac *accumulator) addFields(
-// need to be created (because of filtering, an error, etc.)
-func (ac *accumulator) makeMetric(
 	measurement string,
-	fields map[string]interface{},
 	tags map[string]string,
-	mType telegraf.ValueType,
+	fields map[string]interface{},
+	tp telegraf.ValueType,
 	t ...time.Time,
-) telegraf.Metric {
+) {
-	if len(fields) == 0 || len(measurement) == 0 {
+	m, err := metric.New(measurement, tags, fields, ac.getTime(t), tp)
-		return nil
-	}
-	if tags == nil {
-		tags = make(map[string]string)
-	}
-
-	// Override measurement name if set
-	if len(ac.inputConfig.NameOverride) != 0 {
-		measurement = ac.inputConfig.NameOverride
-	}
-	// Apply measurement prefix and suffix if set
-	if len(ac.inputConfig.MeasurementPrefix) != 0 {
-		measurement = ac.inputConfig.MeasurementPrefix + measurement
-	}
-	if len(ac.inputConfig.MeasurementSuffix) != 0 {
-		measurement = measurement + ac.inputConfig.MeasurementSuffix
-	}
-
-	// Apply plugin-wide tags if set
-	for k, v := range ac.inputConfig.Tags {
-		if _, ok := tags[k]; !ok {
-			tags[k] = v
-		}
-	}
-	// Apply daemon-wide tags if set
-	for k, v := range ac.defaultTags {
-		if _, ok := tags[k]; !ok {
-			tags[k] = v
-		}
-	}
-
-	// Apply the metric filter(s)
-	if ok := ac.inputConfig.Filter.Apply(measurement, fields, tags); !ok {
-		return nil
-	}
-
-	for k, v := range fields {
-		// Validate uint64 and float64 fields
-		switch val := v.(type) {
-		case uint64:
-			// InfluxDB does not support writing uint64
-			if val < uint64(9223372036854775808) {
-				fields[k] = int64(val)
-			} else {
-				fields[k] = int64(9223372036854775807)
-			}
-			continue
-		case float64:
-			// NaNs are invalid values in influxdb, skip measurement
-			if math.IsNaN(val) || math.IsInf(val, 0) {
-				if ac.debug {
-					log.Printf("I! Measurement [%s] field [%s] has a NaN or Inf "+
-						"field, skipping",
-						measurement, k)
-				}
-				delete(fields, k)
-				continue
-			}
-		}
-
-		fields[k] = v
-	}
-
-	var timestamp time.Time
-	if len(t) > 0 {
-		timestamp = t[0]
-	} else {
-		timestamp = time.Now()
-	}
-	timestamp = timestamp.Round(ac.precision)
-
-	var m telegraf.Metric
-	var err error
-	switch mType {
-	case telegraf.Counter:
-		m, err = telegraf.NewCounterMetric(measurement, tags, fields, timestamp)
-	case telegraf.Gauge:
-		m, err = telegraf.NewGaugeMetric(measurement, tags, fields, timestamp)
-	default:
-		m, err = telegraf.NewMetric(measurement, tags, fields, timestamp)
-	}
 	if err != nil {
-		log.Printf("E! Error adding point [%s]: %s\n", measurement, err.Error())
+		return
-		return nil
 	}
-
+	if m := ac.maker.MakeMetric(m); m != nil {
-	if ac.trace {
+		ac.metrics <- m
-		fmt.Println("> " + m.String())
 	}
-
-	return m
 }
 
 // AddError passes a runtime error to the accumulator.
@@ -180,59 +105,59 @@ func (ac *accumulator) AddError(err error) {
 	if err == nil {
 		return
 	}
-	atomic.AddUint64(&ac.errCount, 1)
+	ac.maker.Log().Errorf("Error in plugin: %v", err)
-	//TODO suppress/throttle consecutive duplicate errors?
-	log.Printf("E! Error in input [%s]: %s", ac.inputConfig.Name, err)
 }
 
-func (ac *accumulator) Debug() bool {
+func (ac *accumulator) SetPrecision(precision time.Duration) {
-	return ac.debug
+	ac.precision = precision
 }
 
-func (ac *accumulator) SetDebug(debug bool) {
+func (ac *accumulator) getTime(t []time.Time) time.Time {
-	ac.debug = debug
+	var timestamp time.Time
-}
+	if len(t) > 0 {
-
+		timestamp = t[0]
-func (ac *accumulator) Trace() bool {
+	} else {
-	return ac.trace
+		timestamp = time.Now()
-}
-
-func (ac *accumulator) SetTrace(trace bool) {
-	ac.trace = trace
-}
-
-// SetPrecision takes two time.Duration objects. If the first is non-zero,
-// it sets that as the precision. Otherwise, it takes the second argument
-// as the order of time that the metrics should be rounded to, with the
-// maximum being 1s.
-func (ac *accumulator) SetPrecision(precision, interval time.Duration) {
-	if precision > 0 {
-		ac.precision = precision
-		return
 	}
-	switch {
+	return timestamp.Round(ac.precision)
-	case interval >= time.Second:
+}
-		ac.precision = time.Second
+
-	case interval >= time.Millisecond:
+func (ac *accumulator) WithTracking(maxTracked int) telegraf.TrackingAccumulator {
-		ac.precision = time.Millisecond
+	return &trackingAccumulator{
-	case interval >= time.Microsecond:
+		Accumulator: ac,
-		ac.precision = time.Microsecond
+		delivered:   make(chan telegraf.DeliveryInfo, maxTracked),
+	}
+}
+
+type trackingAccumulator struct {
+	telegraf.Accumulator
+	delivered chan telegraf.DeliveryInfo
+}
+
+func (a *trackingAccumulator) AddTrackingMetric(m telegraf.Metric) telegraf.TrackingID {
+	dm, id := metric.WithTracking(m, a.onDelivery)
+	a.AddMetric(dm)
+	return id
+}
+
+func (a *trackingAccumulator) AddTrackingMetricGroup(group []telegraf.Metric) telegraf.TrackingID {
+	db, id := metric.WithGroupTracking(group, a.onDelivery)
+	for _, m := range db {
+		a.AddMetric(m)
+	}
+	return id
+}
+
+func (a *trackingAccumulator) Delivered() <-chan telegraf.DeliveryInfo {
+	return a.delivered
+}
+
+func (a *trackingAccumulator) onDelivery(info telegraf.DeliveryInfo) {
+	select {
+	case a.delivered <- info:
 	default:
-		ac.precision = time.Nanosecond
+		// This is a programming error in the input.  More items were sent for
+		// tracking than space requested.
+		panic("channel is full")
 	}
 }
-
-func (ac *accumulator) DisablePrecision() {
-	ac.precision = time.Nanosecond
-}
-
-func (ac *accumulator) setDefaultTags(tags map[string]string) {
-	ac.defaultTags = tags
-}
-
-func (ac *accumulator) addDefaultTag(key, value string) {
-	if ac.defaultTags == nil {
-		ac.defaultTags = make(map[string]string)
-	}
-	ac.defaultTags[key] = value
-}

agent/accumulator_test.go

@@ -4,589 +4,46 @@ import (
 	"bytes"
 	"fmt"
 	"log"
-	"math"
 	"os"
 	"testing"
 	"time"
 
 	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/internal/models"
+	"github.com/influxdata/telegraf/models"
-
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
-func TestAdd(t *testing.T) {
-	a := accumulator{}
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", now.UnixNano()),
-		actual)
-}
-
-func TestAddGauge(t *testing.T) {
-	a := accumulator{}
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddGauge("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddGauge("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddGauge("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-	assert.Equal(t, testm.Type(), telegraf.Gauge)
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test value=101")
-	assert.Equal(t, testm.Type(), telegraf.Gauge)
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", now.UnixNano()),
-		actual)
-	assert.Equal(t, testm.Type(), telegraf.Gauge)
-}
-
-func TestAddCounter(t *testing.T) {
-	a := accumulator{}
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddCounter("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddCounter("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddCounter("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-	assert.Equal(t, testm.Type(), telegraf.Counter)
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test value=101")
-	assert.Equal(t, testm.Type(), telegraf.Counter)
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", now.UnixNano()),
-		actual)
-	assert.Equal(t, testm.Type(), telegraf.Counter)
-}
-
-func TestAddNoPrecisionWithInterval(t *testing.T) {
-	a := accumulator{}
-	now := time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC)
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.SetPrecision(0, time.Second)
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", int64(1139572800000000000)),
-		actual)
-}
-
-func TestAddNoIntervalWithPrecision(t *testing.T) {
-	a := accumulator{}
-	now := time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC)
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.SetPrecision(time.Second, time.Millisecond)
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", int64(1139572800000000000)),
-		actual)
-}
-
-func TestAddDisablePrecision(t *testing.T) {
-	a := accumulator{}
-	now := time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC)
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.SetPrecision(time.Second, time.Millisecond)
-	a.DisablePrecision()
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", int64(1139572800082912748)),
-		actual)
-}
-
-func TestDifferentPrecisions(t *testing.T) {
-	a := accumulator{}
-	now := time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC)
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.SetPrecision(0, time.Second)
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", int64(1139572800000000000)),
-		actual)
-
-	a.SetPrecision(0, time.Millisecond)
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", int64(1139572800083000000)),
-		actual)
-
-	a.SetPrecision(0, time.Microsecond)
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", int64(1139572800082913000)),
-		actual)
-
-	a.SetPrecision(0, time.Nanosecond)
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test value=101 %d", int64(1139572800082912748)),
-		actual)
-}
-
-func TestAddDefaultTags(t *testing.T) {
-	a := accumulator{}
-	a.addDefaultTag("default", "tag")
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest,default=tag value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test,default=tag value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test,default=tag value=101 %d", now.UnixNano()),
-		actual)
-}
-
 func TestAddFields(t *testing.T) {
-	a := accumulator{}
+	metrics := make(chan telegraf.Metric, 10)
-	now := time.Now()
+	defer close(metrics)
-	a.metrics = make(chan telegraf.Metric, 10)
+	a := NewAccumulator(&TestMetricMaker{}, metrics)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
 
+	tags := map[string]string{"foo": "bar"}
 	fields := map[string]interface{}{
 		"usage": float64(99),
 	}
-	a.AddFields("acctest", fields, map[string]string{})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest usage=99")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test usage=99")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test usage=99 %d", now.UnixNano()),
-		actual)
-}
-
-// Test that all Inf fields get dropped, and not added to metrics channel
-func TestAddInfFields(t *testing.T) {
-	inf := math.Inf(1)
-	ninf := math.Inf(-1)
-
-	a := accumulator{}
 	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
+	a.AddCounter("acctest", fields, tags, now)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
 
-	fields := map[string]interface{}{
+	testm := <-metrics
-		"usage":  inf,
-		"nusage": ninf,
-	}
-	a.AddFields("acctest", fields, map[string]string{})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"}, now)
 
-	assert.Len(t, a.metrics, 0)
+	require.Equal(t, "acctest", testm.Name())
+	actual, ok := testm.GetField("usage")
 
-	// test that non-inf fields are kept and not dropped
+	require.True(t, ok)
-	fields["notinf"] = float64(100)
+	require.Equal(t, float64(99), actual)
-	a.AddFields("acctest", fields, map[string]string{})
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest notinf=100")
-}
 
-// Test that nan fields are dropped and not added
+	actual, ok = testm.GetTag("foo")
-func TestAddNaNFields(t *testing.T) {
+	require.True(t, ok)
-	nan := math.NaN()
+	require.Equal(t, "bar", actual)
 
-	a := accumulator{}
+	tm := testm.Time()
-	now := time.Now()
+	// okay if monotonic clock differs
-	a.metrics = make(chan telegraf.Metric, 10)
+	require.True(t, now.Equal(tm))
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
 
-	fields := map[string]interface{}{
+	tp := testm.Type()
-		"usage": nan,
+	require.Equal(t, telegraf.Counter, tp)
-	}
-	a.AddFields("acctest", fields, map[string]string{})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"}, now)
-
-	assert.Len(t, a.metrics, 0)
-
-	// test that non-nan fields are kept and not dropped
-	fields["notnan"] = float64(100)
-	a.AddFields("acctest", fields, map[string]string{})
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest notnan=100")
-}
-
-func TestAddUint64Fields(t *testing.T) {
-	a := accumulator{}
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	fields := map[string]interface{}{
-		"usage": uint64(99),
-	}
-	a.AddFields("acctest", fields, map[string]string{})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest usage=99i")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test usage=99i")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test usage=99i %d", now.UnixNano()),
-		actual)
-}
-
-func TestAddUint64Overflow(t *testing.T) {
-	a := accumulator{}
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	fields := map[string]interface{}{
-		"usage": uint64(9223372036854775808),
-	}
-	a.AddFields("acctest", fields, map[string]string{})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"})
-	a.AddFields("acctest", fields, map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest usage=9223372036854775807i")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test usage=9223372036854775807i")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test usage=9223372036854775807i %d", now.UnixNano()),
-		actual)
-}
-
-func TestAddInts(t *testing.T) {
-	a := accumulator{}
-	a.addDefaultTag("default", "tag")
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddFields("acctest",
-		map[string]interface{}{"value": int(101)},
-		map[string]string{})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": int32(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": int64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest,default=tag value=101i")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest,acc=test,default=tag value=101i")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test,default=tag value=101i %d", now.UnixNano()),
-		actual)
-}
-
-func TestAddFloats(t *testing.T) {
-	a := accumulator{}
-	a.addDefaultTag("default", "tag")
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float32(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest,acc=test,default=tag value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test,default=tag value=101 %d", now.UnixNano()),
-		actual)
-}
-
-func TestAddStrings(t *testing.T) {
-	a := accumulator{}
-	a.addDefaultTag("default", "tag")
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddFields("acctest",
-		map[string]interface{}{"value": "test"},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": "foo"},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest,acc=test,default=tag value=\"test\"")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test,default=tag value=\"foo\" %d", now.UnixNano()),
-		actual)
-}
-
-func TestAddBools(t *testing.T) {
-	a := accumulator{}
-	a.addDefaultTag("default", "tag")
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	a.inputConfig = &models.InputConfig{}
-
-	a.AddFields("acctest",
-		map[string]interface{}{"value": true}, map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": false}, map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest,acc=test,default=tag value=true")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest,acc=test,default=tag value=false %d", now.UnixNano()),
-		actual)
-}
-
-// Test that tag filters get applied to metrics.
-func TestAccFilterTags(t *testing.T) {
-	a := accumulator{}
-	now := time.Now()
-	a.metrics = make(chan telegraf.Metric, 10)
-	defer close(a.metrics)
-	filter := models.Filter{
-		TagExclude: []string{"acc"},
-	}
-	assert.NoError(t, filter.Compile())
-	a.inputConfig = &models.InputConfig{}
-	a.inputConfig.Filter = filter
-
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"})
-	a.AddFields("acctest",
-		map[string]interface{}{"value": float64(101)},
-		map[string]string{"acc": "test"}, now)
-
-	testm := <-a.metrics
-	actual := testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Contains(t, actual, "acctest value=101")
-
-	testm = <-a.metrics
-	actual = testm.String()
-	assert.Equal(t,
-		fmt.Sprintf("acctest value=101 %d", now.UnixNano()),
-		actual)
 }
 
 func TestAccAddError(t *testing.T) {
@@ -594,21 +51,110 @@ func TestAccAddError(t *testing.T) {
 	log.SetOutput(errBuf)
 	defer log.SetOutput(os.Stderr)
 
-	a := accumulator{}
+	metrics := make(chan telegraf.Metric, 10)
-	a.inputConfig = &models.InputConfig{}
+	defer close(metrics)
-	a.inputConfig.Name = "mock_plugin"
+	a := NewAccumulator(&TestMetricMaker{}, metrics)
 
 	a.AddError(fmt.Errorf("foo"))
 	a.AddError(fmt.Errorf("bar"))
 	a.AddError(fmt.Errorf("baz"))
 
 	errs := bytes.Split(errBuf.Bytes(), []byte{'\n'})
-	assert.EqualValues(t, 3, a.errCount)
 	require.Len(t, errs, 4) // 4 because of trailing newline
-	assert.Contains(t, string(errs[0]), "mock_plugin")
+	assert.Contains(t, string(errs[0]), "TestPlugin")
 	assert.Contains(t, string(errs[0]), "foo")
-	assert.Contains(t, string(errs[1]), "mock_plugin")
+	assert.Contains(t, string(errs[1]), "TestPlugin")
 	assert.Contains(t, string(errs[1]), "bar")
-	assert.Contains(t, string(errs[2]), "mock_plugin")
+	assert.Contains(t, string(errs[2]), "TestPlugin")
 	assert.Contains(t, string(errs[2]), "baz")
 }
+
+func TestSetPrecision(t *testing.T) {
+	tests := []struct {
+		name      string
+		unset     bool
+		precision time.Duration
+		timestamp time.Time
+		expected  time.Time
+	}{
+		{
+			name:      "default precision is nanosecond",
+			unset:     true,
+			timestamp: time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC),
+			expected:  time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC),
+		},
+		{
+			name:      "second interval",
+			precision: time.Second,
+			timestamp: time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC),
+			expected:  time.Date(2006, time.February, 10, 12, 0, 0, 0, time.UTC),
+		},
+		{
+			name:      "microsecond interval",
+			precision: time.Microsecond,
+			timestamp: time.Date(2006, time.February, 10, 12, 0, 0, 82912748, time.UTC),
+			expected:  time.Date(2006, time.February, 10, 12, 0, 0, 82913000, time.UTC),
+		},
+		{
+			name:      "2 second precision",
+			precision: 2 * time.Second,
+			timestamp: time.Date(2006, time.February, 10, 12, 0, 2, 4, time.UTC),
+			expected:  time.Date(2006, time.February, 10, 12, 0, 2, 0, time.UTC),
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			metrics := make(chan telegraf.Metric, 10)
+
+			a := NewAccumulator(&TestMetricMaker{}, metrics)
+			if !tt.unset {
+				a.SetPrecision(tt.precision)
+			}
+
+			a.AddFields("acctest",
+				map[string]interface{}{"value": float64(101)},
+				map[string]string{},
+				tt.timestamp,
+			)
+
+			testm := <-metrics
+			require.Equal(t, tt.expected, testm.Time())
+
+			close(metrics)
+		})
+	}
+}
+
+func TestAddTrackingMetricGroupEmpty(t *testing.T) {
+	ch := make(chan telegraf.Metric, 10)
+	metrics := []telegraf.Metric{}
+	acc := NewAccumulator(&TestMetricMaker{}, ch).WithTracking(1)
+
+	id := acc.AddTrackingMetricGroup(metrics)
+
+	select {
+	case tracking := <-acc.Delivered():
+		require.Equal(t, tracking.ID(), id)
+	default:
+		t.Fatal("empty group should be delivered immediately")
+	}
+}
+
+type TestMetricMaker struct {
+}
+
+func (tm *TestMetricMaker) Name() string {
+	return "TestPlugin"
+}
+
+func (tm *TestMetricMaker) LogName() string {
+	return tm.Name()
+}
+
+func (tm *TestMetricMaker) MakeMetric(metric telegraf.Metric) telegraf.Metric {
+	return metric
+}
+
+func (tm *TestMetricMaker) Log() telegraf.Logger {
+	return models.NewLogger("TestPlugin", "test", "")
+}

agent/agent_posix.go

@@ -0,0 +1,19 @@
+// +build !windows
+
+package agent
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+const flushSignal = syscall.SIGUSR1
+
+func watchForFlushSignal(flushRequested chan os.Signal) {
+	signal.Notify(flushRequested, flushSignal)
+}
+
+func stopListeningForFlushSignal(flushRequested chan os.Signal) {
+	defer signal.Stop(flushRequested)
+}

agent/agent_test.go

@@ -2,15 +2,13 @@ package agent
 
 import (
 	"testing"
+	"time"
 
-	"github.com/influxdata/telegraf/internal/config"
+	"github.com/influxdata/telegraf/config"
-
-	// needing to load the plugins
 	_ "github.com/influxdata/telegraf/plugins/inputs/all"
-	// needing to load the outputs
 	_ "github.com/influxdata/telegraf/plugins/outputs/all"
-
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestAgent_OmitHostname(t *testing.T) {
@@ -24,35 +22,35 @@ func TestAgent_OmitHostname(t *testing.T) {
 func TestAgent_LoadPlugin(t *testing.T) {
 	c := config.NewConfig()
 	c.InputFilters = []string{"mysql"}
-	err := c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err := c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ := NewAgent(c)
 	assert.Equal(t, 1, len(a.Config.Inputs))
 
 	c = config.NewConfig()
 	c.InputFilters = []string{"foo"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 0, len(a.Config.Inputs))
 
 	c = config.NewConfig()
 	c.InputFilters = []string{"mysql", "foo"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 1, len(a.Config.Inputs))
 
 	c = config.NewConfig()
 	c.InputFilters = []string{"mysql", "redis"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 2, len(a.Config.Inputs))
 
 	c = config.NewConfig()
 	c.InputFilters = []string{"mysql", "foo", "redis", "bar"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 2, len(a.Config.Inputs))
@@ -61,42 +59,42 @@ func TestAgent_LoadPlugin(t *testing.T) {
 func TestAgent_LoadOutput(t *testing.T) {
 	c := config.NewConfig()
 	c.OutputFilters = []string{"influxdb"}
-	err := c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err := c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ := NewAgent(c)
 	assert.Equal(t, 2, len(a.Config.Outputs))
 
 	c = config.NewConfig()
 	c.OutputFilters = []string{"kafka"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 1, len(a.Config.Outputs))
 
 	c = config.NewConfig()
 	c.OutputFilters = []string{}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 3, len(a.Config.Outputs))
 
 	c = config.NewConfig()
 	c.OutputFilters = []string{"foo"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 0, len(a.Config.Outputs))
 
 	c = config.NewConfig()
 	c.OutputFilters = []string{"influxdb", "foo"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 2, len(a.Config.Outputs))
 
 	c = config.NewConfig()
 	c.OutputFilters = []string{"influxdb", "kafka"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	assert.Equal(t, 3, len(c.Outputs))
 	a, _ = NewAgent(c)
@@ -104,8 +102,67 @@ func TestAgent_LoadOutput(t *testing.T) {
 
 	c = config.NewConfig()
 	c.OutputFilters = []string{"influxdb", "foo", "kafka", "bar"}
-	err = c.LoadConfig("../internal/config/testdata/telegraf-agent.toml")
+	err = c.LoadConfig("../config/testdata/telegraf-agent.toml")
 	assert.NoError(t, err)
 	a, _ = NewAgent(c)
 	assert.Equal(t, 3, len(a.Config.Outputs))
 }
+
+func TestWindow(t *testing.T) {
+	parse := func(s string) time.Time {
+		tm, err := time.Parse(time.RFC3339, s)
+		if err != nil {
+			panic(err)
+		}
+		return tm
+	}
+
+	tests := []struct {
+		name          string
+		start         time.Time
+		roundInterval bool
+		period        time.Duration
+		since         time.Time
+		until         time.Time
+	}{
+		{
+			name:          "round with exact alignment",
+			start:         parse("2018-03-27T00:00:00Z"),
+			roundInterval: true,
+			period:        30 * time.Second,
+			since:         parse("2018-03-27T00:00:00Z"),
+			until:         parse("2018-03-27T00:00:30Z"),
+		},
+		{
+			name:          "round with alignment needed",
+			start:         parse("2018-03-27T00:00:05Z"),
+			roundInterval: true,
+			period:        30 * time.Second,
+			since:         parse("2018-03-27T00:00:00Z"),
+			until:         parse("2018-03-27T00:00:30Z"),
+		},
+		{
+			name:          "no round with exact alignment",
+			start:         parse("2018-03-27T00:00:00Z"),
+			roundInterval: false,
+			period:        30 * time.Second,
+			since:         parse("2018-03-27T00:00:00Z"),
+			until:         parse("2018-03-27T00:00:30Z"),
+		},
+		{
+			name:          "no found with alignment needed",
+			start:         parse("2018-03-27T00:00:05Z"),
+			roundInterval: false,
+			period:        30 * time.Second,
+			since:         parse("2018-03-27T00:00:05Z"),
+			until:         parse("2018-03-27T00:00:35Z"),
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			since, until := updateWindow(tt.start, tt.roundInterval, tt.period)
+			require.Equal(t, tt.since, since, "since")
+			require.Equal(t, tt.until, until, "until")
+		})
+	}
+}

agent/agent_windows.go

@@ -0,0 +1,13 @@
+// +build windows
+
+package agent
+
+import "os"
+
+func watchForFlushSignal(flushRequested chan os.Signal) {
+	// not supported
+}
+
+func stopListeningForFlushSignal(flushRequested chan os.Signal) {
+	// not supported
+}

agent/tick.go

@@ -0,0 +1,268 @@
+package agent
+
+import (
+	"context"
+	"sync"
+	"time"
+
+	"github.com/benbjohnson/clock"
+	"github.com/influxdata/telegraf/internal"
+)
+
+type empty struct{}
+
+type Ticker interface {
+	Elapsed() <-chan time.Time
+	Stop()
+}
+
+// AlignedTicker delivers ticks at aligned times plus an optional jitter.  Each
+// tick is realigned to avoid drift and handle changes to the system clock.
+//
+// The ticks may have an jitter duration applied to them as an random offset to
+// the interval.  However the overall pace of is that of the interval, so on
+// average you will have one collection each interval.
+//
+// The first tick is emitted at the next alignment.
+//
+// Ticks are dropped for slow consumers.
+//
+// The implementation currently does not recalculate until the next tick with
+// no maximum sleep, when using large intervals alignment is not corrected
+// until the next tick.
+type AlignedTicker struct {
+	interval time.Duration
+	jitter   time.Duration
+	ch       chan time.Time
+	cancel   context.CancelFunc
+	wg       sync.WaitGroup
+}
+
+func NewAlignedTicker(now time.Time, interval, jitter time.Duration) *AlignedTicker {
+	return newAlignedTicker(now, interval, jitter, clock.New())
+}
+
+func newAlignedTicker(now time.Time, interval, jitter time.Duration, clock clock.Clock) *AlignedTicker {
+	ctx, cancel := context.WithCancel(context.Background())
+	t := &AlignedTicker{
+		interval: interval,
+		jitter:   jitter,
+		ch:       make(chan time.Time, 1),
+		cancel:   cancel,
+	}
+
+	d := t.next(now)
+	timer := clock.Timer(d)
+
+	t.wg.Add(1)
+	go func() {
+		defer t.wg.Done()
+		t.run(ctx, timer)
+	}()
+
+	return t
+}
+
+func (t *AlignedTicker) next(now time.Time) time.Duration {
+	next := internal.AlignTime(now, t.interval)
+	d := next.Sub(now)
+	if d == 0 {
+		d = t.interval
+	}
+	d += internal.RandomDuration(t.jitter)
+	return d
+}
+
+func (t *AlignedTicker) run(ctx context.Context, timer *clock.Timer) {
+	for {
+		select {
+		case <-ctx.Done():
+			timer.Stop()
+			return
+		case now := <-timer.C:
+			select {
+			case t.ch <- now:
+			default:
+			}
+
+			d := t.next(now)
+			timer.Reset(d)
+		}
+	}
+}
+
+func (t *AlignedTicker) Elapsed() <-chan time.Time {
+	return t.ch
+}
+
+func (t *AlignedTicker) Stop() {
+	t.cancel()
+	t.wg.Wait()
+}
+
+// UnalignedTicker delivers ticks at regular but unaligned intervals.  No
+// effort is made to avoid drift.
+//
+// The ticks may have an jitter duration applied to them as an random offset to
+// the interval.  However the overall pace of is that of the interval, so on
+// average you will have one collection each interval.
+//
+// The first tick is emitted immediately.
+//
+// Ticks are dropped for slow consumers.
+type UnalignedTicker struct {
+	interval time.Duration
+	jitter   time.Duration
+	ch       chan time.Time
+	cancel   context.CancelFunc
+	wg       sync.WaitGroup
+}
+
+func NewUnalignedTicker(interval, jitter time.Duration) *UnalignedTicker {
+	return newUnalignedTicker(interval, jitter, clock.New())
+}
+
+func newUnalignedTicker(interval, jitter time.Duration, clock clock.Clock) *UnalignedTicker {
+	ctx, cancel := context.WithCancel(context.Background())
+	t := &UnalignedTicker{
+		interval: interval,
+		jitter:   jitter,
+		ch:       make(chan time.Time, 1),
+		cancel:   cancel,
+	}
+
+	ticker := clock.Ticker(t.interval)
+	t.ch <- clock.Now()
+
+	t.wg.Add(1)
+	go func() {
+		defer t.wg.Done()
+		t.run(ctx, ticker, clock)
+	}()
+
+	return t
+}
+
+func sleep(ctx context.Context, duration time.Duration, clock clock.Clock) error {
+	if duration == 0 {
+		return nil
+	}
+
+	t := clock.Timer(duration)
+	select {
+	case <-t.C:
+		return nil
+	case <-ctx.Done():
+		t.Stop()
+		return ctx.Err()
+	}
+}
+
+func (t *UnalignedTicker) run(ctx context.Context, ticker *clock.Ticker, clock clock.Clock) {
+	for {
+		select {
+		case <-ctx.Done():
+			ticker.Stop()
+			return
+		case <-ticker.C:
+			jitter := internal.RandomDuration(t.jitter)
+			err := sleep(ctx, jitter, clock)
+			if err != nil {
+				ticker.Stop()
+				return
+			}
+			select {
+			case t.ch <- clock.Now():
+			default:
+			}
+		}
+	}
+}
+
+func (t *UnalignedTicker) InjectTick() {
+	t.ch <- time.Now()
+}
+
+func (t *UnalignedTicker) Elapsed() <-chan time.Time {
+	return t.ch
+}
+
+func (t *UnalignedTicker) Stop() {
+	t.cancel()
+	t.wg.Wait()
+}
+
+// RollingTicker delivers ticks at regular but unaligned intervals.
+//
+// Because the next interval is scheduled based on the interval + jitter, you
+// are guaranteed at least interval seconds without missing a tick and ticks
+// will be evenly scheduled over time.
+//
+// On average you will have one collection each interval + (jitter/2).
+//
+// The first tick is emitted after interval+jitter seconds.
+//
+// Ticks are dropped for slow consumers.
+type RollingTicker struct {
+	interval time.Duration
+	jitter   time.Duration
+	ch       chan time.Time
+	cancel   context.CancelFunc
+	wg       sync.WaitGroup
+}
+
+func NewRollingTicker(interval, jitter time.Duration) *RollingTicker {
+	return newRollingTicker(interval, jitter, clock.New())
+}
+
+func newRollingTicker(interval, jitter time.Duration, clock clock.Clock) *RollingTicker {
+	ctx, cancel := context.WithCancel(context.Background())
+	t := &RollingTicker{
+		interval: interval,
+		jitter:   jitter,
+		ch:       make(chan time.Time, 1),
+		cancel:   cancel,
+	}
+
+	d := t.next()
+	timer := clock.Timer(d)
+
+	t.wg.Add(1)
+	go func() {
+		defer t.wg.Done()
+		t.run(ctx, timer)
+	}()
+
+	return t
+}
+
+func (t *RollingTicker) next() time.Duration {
+	return t.interval + internal.RandomDuration(t.jitter)
+}
+
+func (t *RollingTicker) run(ctx context.Context, timer *clock.Timer) {
+	for {
+		select {
+		case <-ctx.Done():
+			timer.Stop()
+			return
+		case now := <-timer.C:
+			select {
+			case t.ch <- now:
+			default:
+			}
+
+			d := t.next()
+			timer.Reset(d)
+		}
+	}
+}
+
+func (t *RollingTicker) Elapsed() <-chan time.Time {
+	return t.ch
+}
+
+func (t *RollingTicker) Stop() {
+	t.cancel()
+	t.wg.Wait()
+}

agent/tick_test.go

@@ -0,0 +1,251 @@
+package agent
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/benbjohnson/clock"
+	"github.com/stretchr/testify/require"
+)
+
+var format = "2006-01-02T15:04:05.999Z07:00"
+
+func TestAlignedTicker(t *testing.T) {
+	interval := 10 * time.Second
+	jitter := 0 * time.Second
+
+	clock := clock.NewMock()
+	since := clock.Now()
+	until := since.Add(60 * time.Second)
+
+	ticker := newAlignedTicker(since, interval, jitter, clock)
+
+	expected := []time.Time{
+		time.Unix(10, 0).UTC(),
+		time.Unix(20, 0).UTC(),
+		time.Unix(30, 0).UTC(),
+		time.Unix(40, 0).UTC(),
+		time.Unix(50, 0).UTC(),
+		time.Unix(60, 0).UTC(),
+	}
+
+	actual := []time.Time{}
+	for !clock.Now().After(until) {
+		select {
+		case tm := <-ticker.Elapsed():
+			actual = append(actual, tm.UTC())
+		default:
+		}
+		clock.Add(10 * time.Second)
+	}
+
+	require.Equal(t, expected, actual)
+}
+
+func TestAlignedTickerJitter(t *testing.T) {
+	interval := 10 * time.Second
+	jitter := 5 * time.Second
+
+	clock := clock.NewMock()
+	since := clock.Now()
+	until := since.Add(60 * time.Second)
+
+	ticker := newAlignedTicker(since, interval, jitter, clock)
+
+	last := since
+	for !clock.Now().After(until) {
+		select {
+		case tm := <-ticker.Elapsed():
+			require.True(t, tm.Sub(last) <= 15*time.Second)
+			require.True(t, tm.Sub(last) >= 5*time.Second)
+			last = last.Add(interval)
+		default:
+		}
+		clock.Add(5 * time.Second)
+	}
+}
+
+func TestAlignedTickerMissedTick(t *testing.T) {
+	interval := 10 * time.Second
+	jitter := 0 * time.Second
+
+	clock := clock.NewMock()
+	since := clock.Now()
+
+	ticker := newAlignedTicker(since, interval, jitter, clock)
+
+	clock.Add(25 * time.Second)
+	tm := <-ticker.Elapsed()
+	require.Equal(t, time.Unix(10, 0).UTC(), tm.UTC())
+	clock.Add(5 * time.Second)
+	tm = <-ticker.Elapsed()
+	require.Equal(t, time.Unix(30, 0).UTC(), tm.UTC())
+}
+
+func TestUnalignedTicker(t *testing.T) {
+	interval := 10 * time.Second
+	jitter := 0 * time.Second
+
+	clock := clock.NewMock()
+	clock.Add(1 * time.Second)
+	since := clock.Now()
+	until := since.Add(60 * time.Second)
+
+	ticker := newUnalignedTicker(interval, jitter, clock)
+
+	expected := []time.Time{
+		time.Unix(1, 0).UTC(),
+		time.Unix(11, 0).UTC(),
+		time.Unix(21, 0).UTC(),
+		time.Unix(31, 0).UTC(),
+		time.Unix(41, 0).UTC(),
+		time.Unix(51, 0).UTC(),
+		time.Unix(61, 0).UTC(),
+	}
+
+	actual := []time.Time{}
+	for !clock.Now().After(until) {
+		select {
+		case tm := <-ticker.Elapsed():
+			actual = append(actual, tm.UTC())
+		default:
+		}
+		clock.Add(10 * time.Second)
+	}
+
+	require.Equal(t, expected, actual)
+}
+
+func TestRollingTicker(t *testing.T) {
+	interval := 10 * time.Second
+	jitter := 0 * time.Second
+
+	clock := clock.NewMock()
+	clock.Add(1 * time.Second)
+	since := clock.Now()
+	until := since.Add(60 * time.Second)
+
+	ticker := newUnalignedTicker(interval, jitter, clock)
+
+	expected := []time.Time{
+		time.Unix(1, 0).UTC(),
+		time.Unix(11, 0).UTC(),
+		time.Unix(21, 0).UTC(),
+		time.Unix(31, 0).UTC(),
+		time.Unix(41, 0).UTC(),
+		time.Unix(51, 0).UTC(),
+		time.Unix(61, 0).UTC(),
+	}
+
+	actual := []time.Time{}
+	for !clock.Now().After(until) {
+		select {
+		case tm := <-ticker.Elapsed():
+			actual = append(actual, tm.UTC())
+		default:
+		}
+		clock.Add(10 * time.Second)
+	}
+
+	require.Equal(t, expected, actual)
+}
+
+// Simulates running the Ticker for an hour and displays stats about the
+// operation.
+func TestAlignedTickerDistribution(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode.")
+	}
+
+	interval := 10 * time.Second
+	jitter := 5 * time.Second
+
+	clock := clock.NewMock()
+	since := clock.Now()
+
+	ticker := newAlignedTicker(since, interval, jitter, clock)
+	dist := simulatedDist(ticker, clock)
+	printDist(dist)
+	require.True(t, 350 < dist.Count)
+	require.True(t, 9 < dist.Mean() && dist.Mean() < 11)
+}
+
+// Simulates running the Ticker for an hour and displays stats about the
+// operation.
+func TestUnalignedTickerDistribution(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode.")
+	}
+
+	interval := 10 * time.Second
+	jitter := 5 * time.Second
+
+	clock := clock.NewMock()
+
+	ticker := newUnalignedTicker(interval, jitter, clock)
+	dist := simulatedDist(ticker, clock)
+	printDist(dist)
+	require.True(t, 350 < dist.Count)
+	require.True(t, 9 < dist.Mean() && dist.Mean() < 11)
+}
+
+// Simulates running the Ticker for an hour and displays stats about the
+// operation.
+func TestRollingTickerDistribution(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode.")
+	}
+
+	interval := 10 * time.Second
+	jitter := 5 * time.Second
+
+	clock := clock.NewMock()
+
+	ticker := newRollingTicker(interval, jitter, clock)
+	dist := simulatedDist(ticker, clock)
+	printDist(dist)
+	require.True(t, 275 < dist.Count)
+	require.True(t, 12 < dist.Mean() && 13 > dist.Mean())
+}
+
+type Distribution struct {
+	Buckets  [60]int
+	Count    int
+	Waittime float64
+}
+
+func (d *Distribution) Mean() float64 {
+	return d.Waittime / float64(d.Count)
+}
+
+func printDist(dist Distribution) {
+	for i, count := range dist.Buckets {
+		fmt.Printf("%2d %s\n", i, strings.Repeat("x", count))
+	}
+	fmt.Printf("Average interval: %f\n", dist.Mean())
+	fmt.Printf("Count: %d\n", dist.Count)
+}
+
+func simulatedDist(ticker Ticker, clock *clock.Mock) Distribution {
+	since := clock.Now()
+	until := since.Add(1 * time.Hour)
+
+	var dist Distribution
+
+	last := clock.Now()
+	for !clock.Now().After(until) {
+		select {
+		case tm := <-ticker.Elapsed():
+			dist.Buckets[tm.Second()] += 1
+			dist.Count++
+			dist.Waittime += tm.Sub(last).Seconds()
+			last = tm
+		default:
+			clock.Add(1 * time.Second)
+		}
+	}
+
+	return dist
+}

aggregator.go

@@ -0,0 +1,18 @@
+package telegraf
+
+// Aggregator is an interface for implementing an Aggregator plugin.
+// the RunningAggregator wraps this interface and guarantees that
+// Add, Push, and Reset can not be called concurrently, so locking is not
+// required when implementing an Aggregator plugin.
+type Aggregator interface {
+	PluginDescriber
+
+	// Add the metric to the aggregator.
+	Add(in Metric)
+
+	// Push pushes the current aggregates to the accumulator.
+	Push(acc Accumulator)
+
+	// Reset resets the aggregators caches and aggregates.
+	Reset()
+}

appveyor.yml

@@ -0,0 +1,35 @@
+version: "{build}"
+
+image: Visual Studio 2019
+
+cache:
+ - C:\gopath\pkg\mod -> go.sum
+ - C:\ProgramData\chocolatey\bin -> appveyor.yml
+ - C:\ProgramData\chocolatey\lib -> appveyor.yml
+
+clone_folder: C:\gopath\src\github.com\influxdata\telegraf
+
+environment:
+  GOPATH: C:\gopath
+
+stack: go 1.14
+
+platform: x64
+
+install:
+  - choco install make
+  - cd "%GOPATH%\src\github.com\influxdata\telegraf"
+  - git config --system core.longpaths true
+  - go version
+  - go env
+
+build_script:
+  - make deps
+  - make telegraf
+
+test_script:
+  - make check
+  - make test-windows
+
+artifacts:
+  - path: telegraf.exe

circle.yml

@@ -1,21 +0,0 @@
-machine:
-  services:
-    - docker
-  post:
-    - sudo service zookeeper stop
-    - go version
-    - go version | grep 1.7.1 || sudo rm -rf /usr/local/go
-    - wget https://storage.googleapis.com/golang/go1.7.1.linux-amd64.tar.gz
-    - sudo tar -C /usr/local -xzf go1.7.1.linux-amd64.tar.gz
-    - go version
-
-dependencies:
-  override:
-    - docker info
-  post:
-    - gem install fpm
-    - sudo apt-get install -y rpm python-boto
-
-test:
-  override:
-    - bash scripts/circle-test.sh

cmd/telegraf/telegraf.go

@@ -1,38 +1,51 @@
 package main
 
 import (
+	"context"
+	"errors"
 	"flag"
 	"fmt"
 	"log"
+	"net/http"
+	_ "net/http/pprof" // Comment this line to disable pprof endpoint.
 	"os"
 	"os/signal"
-	"runtime"
+	"sort"
 	"strings"
 	"syscall"
+	"time"
 
 	"github.com/influxdata/telegraf/agent"
-	"github.com/influxdata/telegraf/internal/config"
+	"github.com/influxdata/telegraf/config"
+	"github.com/influxdata/telegraf/internal"
+	"github.com/influxdata/telegraf/internal/goplugin"
 	"github.com/influxdata/telegraf/logger"
+	_ "github.com/influxdata/telegraf/plugins/aggregators/all"
 	"github.com/influxdata/telegraf/plugins/inputs"
 	_ "github.com/influxdata/telegraf/plugins/inputs/all"
 	"github.com/influxdata/telegraf/plugins/outputs"
 	_ "github.com/influxdata/telegraf/plugins/outputs/all"
-
+	_ "github.com/influxdata/telegraf/plugins/processors/all"
-	"github.com/kardianos/service"
 )
 
+// If you update these, update usage.go and usage_windows.go
 var fDebug = flag.Bool("debug", false,
 	"turn on debug logging")
+var pprofAddr = flag.String("pprof-addr", "",
+	"pprof address to listen on, not activate pprof if empty")
 var fQuiet = flag.Bool("quiet", false,
 	"run in quiet mode")
-var fTest = flag.Bool("test", false, "gather metrics, print them out, and exit")
+var fTest = flag.Bool("test", false, "enable test mode: gather metrics, print them out, and exit. Note: Test mode only runs inputs, not processors, aggregators, or outputs")
+var fTestWait = flag.Int("test-wait", 0, "wait up to this many seconds for service inputs to complete in test mode")
 var fConfig = flag.String("config", "", "configuration file to load")
 var fConfigDirectory = flag.String("config-directory", "",
 	"directory containing additional *.conf files")
-var fVersion = flag.Bool("version", false, "display the version")
+var fVersion = flag.Bool("version", false, "display the version and exit")
 var fSampleConfig = flag.Bool("sample-config", false,
 	"print out full sample configuration")
 var fPidfile = flag.String("pidfile", "", "file to write our pid to")
+var fSectionFilters = flag.String("section-filter", "",
+	"filter the sections to print, separator is ':'. Valid values are 'agent', 'global_tags', 'outputs', 'processors', 'aggregators' and 'inputs'")
 var fInputFilters = flag.String("input-filter", "",
 	"filter the inputs to enable, separator is :")
 var fInputList = flag.Bool("input-list", false,
@@ -41,289 +54,314 @@ var fOutputFilters = flag.String("output-filter", "",
 	"filter the outputs to enable, separator is :")
 var fOutputList = flag.Bool("output-list", false,
 	"print available output plugins.")
+var fAggregatorFilters = flag.String("aggregator-filter", "",
+	"filter the aggregators to enable, separator is :")
+var fProcessorFilters = flag.String("processor-filter", "",
+	"filter the processors to enable, separator is :")
 var fUsage = flag.String("usage", "",
-	"print usage for a plugin, ie, 'telegraf -usage mysql'")
+	"print usage for a plugin, ie, 'telegraf --usage mysql'")
 var fService = flag.String("service", "",
-	"operate on the service")
+	"operate on the service (windows only)")
+var fServiceName = flag.String("service-name", "telegraf", "service name (windows only)")
+var fServiceDisplayName = flag.String("service-display-name", "Telegraf Data Collector Service", "service display name (windows only)")
+var fRunAsConsole = flag.Bool("console", false, "run as console application (windows only)")
+var fPlugins = flag.String("plugin-directory", "",
+	"path to directory containing external plugins")
+var fRunOnce = flag.Bool("once", false, "run one gather and exit")
 
-// Telegraf version, populated linker.
-//   ie, -ldflags "-X main.version=`git describe --always --tags`"
 var (
 	version string
 	commit  string
 	branch  string
 )
 
-func init() {
-	// If commit or branch are not set, make that clear.
-	if commit == "" {
-		commit = "unknown"
-	}
-	if branch == "" {
-		branch = "unknown"
-	}
-}
-
-const usage = `Telegraf, The plugin-driven server agent for collecting and reporting metrics.
-
-Usage:
-
-  telegraf <flags>
-
-The flags are:
-
-  -config <file>     configuration file to load
-  -test              gather metrics once, print them to stdout, and exit
-  -sample-config     print out full sample configuration to stdout
-  -config-directory  directory containing additional *.conf files
-  -input-filter      filter the input plugins to enable, separator is :
-  -input-list        print all the plugins inputs
-  -output-filter     filter the output plugins to enable, separator is :
-  -output-list       print all the available outputs
-  -usage             print usage for a plugin, ie, 'telegraf -usage mysql'
-  -debug             print metrics as they're generated to stdout
-  -quiet             run in quiet mode
-  -version           print the version to stdout
-  -service           Control the service, ie, 'telegraf -service install (windows only)'
-
-In addition to the -config flag, telegraf will also load the config file from
-an environment variable or default location. Precedence is:
-  1. -config flag
-  2. $TELEGRAF_CONFIG_PATH environment variable
-  3. $HOME/.telegraf/telegraf.conf
-  4. /etc/telegraf/telegraf.conf
-
-Examples:
-
-  # generate a telegraf config file:
-  telegraf -sample-config > telegraf.conf
-
-  # generate config with only cpu input & influxdb output plugins defined
-  telegraf -sample-config -input-filter cpu -output-filter influxdb
-
-  # run a single telegraf collection, outputing metrics to stdout
-  telegraf -config telegraf.conf -test
-
-  # run telegraf with all plugins defined in config file
-  telegraf -config telegraf.conf
-
-  # run telegraf, enabling the cpu & memory input, and influxdb output plugins
-  telegraf -config telegraf.conf -input-filter cpu:mem -output-filter influxdb
-`
-
 var stop chan struct{}
 
-var srvc service.Service
+func reloadLoop(
-
+	inputFilters []string,
-type program struct{}
+	outputFilters []string,
-
+	aggregatorFilters []string,
-func reloadLoop(stop chan struct{}, s service.Service) {
+	processorFilters []string,
-	defer func() {
+) {
-		if service.Interactive() {
-			os.Exit(0)
-		}
-		return
-	}()
 	reload := make(chan bool, 1)
 	reload <- true
 	for <-reload {
 		reload <- false
-		flag.Usage = func() { usageExit(0) }
-		flag.Parse()
-		args := flag.Args()
 
-		var inputFilters []string
+		ctx, cancel := context.WithCancel(context.Background())
-		if *fInputFilters != "" {
-			inputFilter := strings.TrimSpace(*fInputFilters)
-			inputFilters = strings.Split(":"+inputFilter+":", ":")
-		}
-		var outputFilters []string
-		if *fOutputFilters != "" {
-			outputFilter := strings.TrimSpace(*fOutputFilters)
-			outputFilters = strings.Split(":"+outputFilter+":", ":")
-		}
 
-		if len(args) > 0 {
+		signals := make(chan os.Signal, 1)
-			switch args[0] {
+		signal.Notify(signals, os.Interrupt, syscall.SIGHUP,
-			case "version":
+			syscall.SIGTERM, syscall.SIGINT)
-				fmt.Printf("Telegraf v%s (git: %s %s)\n", version, branch, commit)
-				return
-			case "config":
-				config.PrintSampleConfig(inputFilters, outputFilters)
-				return
-			}
-		}
-
-		// switch for flags which just do something and exit immediately
-		switch {
-		case *fOutputList:
-			fmt.Println("Available Output Plugins:")
-			for k, _ := range outputs.Outputs {
-				fmt.Printf("  %s\n", k)
-			}
-			return
-		case *fInputList:
-			fmt.Println("Available Input Plugins:")
-			for k, _ := range inputs.Inputs {
-				fmt.Printf("  %s\n", k)
-			}
-			return
-		case *fVersion:
-			fmt.Printf("Telegraf v%s (git: %s %s)\n", version, branch, commit)
-			return
-		case *fSampleConfig:
-			config.PrintSampleConfig(inputFilters, outputFilters)
-			return
-		case *fUsage != "":
-			if err := config.PrintInputConfig(*fUsage); err != nil {
-				if err2 := config.PrintOutputConfig(*fUsage); err2 != nil {
-					log.Fatalf("%s and %s", err, err2)
-				}
-			}
-			return
-		}
-
-		// If no other options are specified, load the config file and run.
-		c := config.NewConfig()
-		c.OutputFilters = outputFilters
-		c.InputFilters = inputFilters
-		err := c.LoadConfig(*fConfig)
-		if err != nil {
-			fmt.Println(err)
-			os.Exit(1)
-		}
-
-		if *fConfigDirectory != "" {
-			err = c.LoadDirectory(*fConfigDirectory)
-			if err != nil {
-				log.Fatal(err)
-			}
-		}
-		if len(c.Outputs) == 0 {
-			log.Fatalf("Error: no outputs found, did you provide a valid config file?")
-		}
-		if len(c.Inputs) == 0 {
-			log.Fatalf("Error: no inputs found, did you provide a valid config file?")
-		}
-
-		ag, err := agent.NewAgent(c)
-		if err != nil {
-			log.Fatal(err)
-		}
-
-		// Setup logging
-		logger.SetupLogging(
-			ag.Config.Agent.Debug || *fDebug,
-			ag.Config.Agent.Quiet || *fQuiet,
-			ag.Config.Agent.Logfile,
-		)
-
-		if *fTest {
-			err = ag.Test()
-			if err != nil {
-				log.Fatal(err)
-			}
-			return
-		}
-
-		err = ag.Connect()
-		if err != nil {
-			log.Fatal(err)
-		}
-
-		shutdown := make(chan struct{})
-		signals := make(chan os.Signal)
-		signal.Notify(signals, os.Interrupt, syscall.SIGHUP)
 		go func() {
 			select {
 			case sig := <-signals:
-				if sig == os.Interrupt {
-					close(shutdown)
-				}
 				if sig == syscall.SIGHUP {
-					log.Printf("I! Reloading Telegraf config\n")
+					log.Printf("I! Reloading Telegraf config")
 					<-reload
 					reload <- true
-					close(shutdown)
 				}
+				cancel()
 			case <-stop:
-				close(shutdown)
+				cancel()
 			}
 		}()
 
-		log.Printf("I! Starting Telegraf (version %s)\n", version)
+		err := runAgent(ctx, inputFilters, outputFilters)
-		log.Printf("I! Loaded outputs: %s", strings.Join(c.OutputNames(), " "))
+		if err != nil && err != context.Canceled {
-		log.Printf("I! Loaded inputs: %s", strings.Join(c.InputNames(), " "))
+			log.Fatalf("E! [telegraf] Error running agent: %v", err)
-		log.Printf("I! Tags enabled: %s", c.ListTags())
+		}
+	}
+}
 
-		if *fPidfile != "" {
+func runAgent(ctx context.Context,
-			f, err := os.Create(*fPidfile)
+	inputFilters []string,
-			if err != nil {
+	outputFilters []string,
-				log.Fatalf("Unable to create pidfile: %s", err)
+) error {
-			}
+	log.Printf("I! Starting Telegraf %s", version)
 
+	// If no other options are specified, load the config file and run.
+	c := config.NewConfig()
+	c.OutputFilters = outputFilters
+	c.InputFilters = inputFilters
+	err := c.LoadConfig(*fConfig)
+	if err != nil {
+		return err
+	}
+
+	if *fConfigDirectory != "" {
+		err = c.LoadDirectory(*fConfigDirectory)
+		if err != nil {
+			return err
+		}
+	}
+	if !*fTest && len(c.Outputs) == 0 {
+		return errors.New("Error: no outputs found, did you provide a valid config file?")
+	}
+	if *fPlugins == "" && len(c.Inputs) == 0 {
+		return errors.New("Error: no inputs found, did you provide a valid config file?")
+	}
+
+	if int64(c.Agent.Interval.Duration) <= 0 {
+		return fmt.Errorf("Agent interval must be positive, found %s",
+			c.Agent.Interval.Duration)
+	}
+
+	if int64(c.Agent.FlushInterval.Duration) <= 0 {
+		return fmt.Errorf("Agent flush_interval must be positive; found %s",
+			c.Agent.Interval.Duration)
+	}
+
+	ag, err := agent.NewAgent(c)
+	if err != nil {
+		return err
+	}
+
+	// Setup logging as configured.
+	logConfig := logger.LogConfig{
+		Debug:               ag.Config.Agent.Debug || *fDebug,
+		Quiet:               ag.Config.Agent.Quiet || *fQuiet,
+		LogTarget:           ag.Config.Agent.LogTarget,
+		Logfile:             ag.Config.Agent.Logfile,
+		RotationInterval:    ag.Config.Agent.LogfileRotationInterval,
+		RotationMaxSize:     ag.Config.Agent.LogfileRotationMaxSize,
+		RotationMaxArchives: ag.Config.Agent.LogfileRotationMaxArchives,
+	}
+
+	logger.SetupLogging(logConfig)
+
+	if *fRunOnce {
+		wait := time.Duration(*fTestWait) * time.Second
+		return ag.Once(ctx, wait)
+	}
+
+	if *fTest || *fTestWait != 0 {
+		wait := time.Duration(*fTestWait) * time.Second
+		return ag.Test(ctx, wait)
+	}
+
+	log.Printf("I! Loaded inputs: %s", strings.Join(c.InputNames(), " "))
+	log.Printf("I! Loaded aggregators: %s", strings.Join(c.AggregatorNames(), " "))
+	log.Printf("I! Loaded processors: %s", strings.Join(c.ProcessorNames(), " "))
+	log.Printf("I! Loaded outputs: %s", strings.Join(c.OutputNames(), " "))
+	log.Printf("I! Tags enabled: %s", c.ListTags())
+
+	if *fPidfile != "" {
+		f, err := os.OpenFile(*fPidfile, os.O_CREATE|os.O_WRONLY, 0644)
+		if err != nil {
+			log.Printf("E! Unable to create pidfile: %s", err)
+		} else {
 			fmt.Fprintf(f, "%d\n", os.Getpid())
 
 			f.Close()
-		}
 
-		ag.Run(shutdown)
+			defer func() {
+				err := os.Remove(*fPidfile)
+				if err != nil {
+					log.Printf("E! Unable to remove pidfile: %s", err)
+				}
+			}()
+		}
 	}
+
+	return ag.Run(ctx)
 }
 
 func usageExit(rc int) {
-	fmt.Println(usage)
+	fmt.Println(internal.Usage)
 	os.Exit(rc)
 }
 
-func (p *program) Start(s service.Service) error {
+func formatFullVersion() string {
-	srvc = s
+	var parts = []string{"Telegraf"}
-	go p.run()
+
-	return nil
+	if version != "" {
-}
+		parts = append(parts, version)
-func (p *program) run() {
+	} else {
-	stop = make(chan struct{})
+		parts = append(parts, "unknown")
-	reloadLoop(stop, srvc)
+	}
-}
+
-func (p *program) Stop(s service.Service) error {
+	if branch != "" || commit != "" {
-	close(stop)
+		if branch == "" {
-	return nil
+			branch = "unknown"
+		}
+		if commit == "" {
+			commit = "unknown"
+		}
+		git := fmt.Sprintf("(git: %s %s)", branch, commit)
+		parts = append(parts, git)
+	}
+
+	return strings.Join(parts, " ")
 }
 
 func main() {
+	flag.Usage = func() { usageExit(0) }
 	flag.Parse()
-	if runtime.GOOS == "windows" {
+	args := flag.Args()
-		svcConfig := &service.Config{
-			Name:        "telegraf",
-			DisplayName: "Telegraf Data Collector Service",
-			Description: "Collects data using a series of plugins and publishes it to" +
-				"another series of plugins.",
-			Arguments: []string{"-config", "C:\\Program Files\\Telegraf\\telegraf.conf"},
-		}
 
-		prg := &program{}
+	sectionFilters, inputFilters, outputFilters := []string{}, []string{}, []string{}
-		s, err := service.New(prg, svcConfig)
+	if *fSectionFilters != "" {
-		if err != nil {
+		sectionFilters = strings.Split(":"+strings.TrimSpace(*fSectionFilters)+":", ":")
-			log.Fatal(err)
-		}
-		// Handle the -service flag here to prevent any issues with tooling that
-		// may not have an interactive session, e.g. installing from Ansible.
-		if *fService != "" {
-			if *fConfig != "" {
-				(*svcConfig).Arguments = []string{"-config", *fConfig}
-			}
-			err := service.Control(s, *fService)
-			if err != nil {
-				log.Fatal(err)
-			}
-		} else {
-			err = s.Run()
-			if err != nil {
-				log.Println("E! " + err.Error())
-			}
-		}
-	} else {
-		stop = make(chan struct{})
-		reloadLoop(stop, nil)
 	}
+	if *fInputFilters != "" {
+		inputFilters = strings.Split(":"+strings.TrimSpace(*fInputFilters)+":", ":")
+	}
+	if *fOutputFilters != "" {
+		outputFilters = strings.Split(":"+strings.TrimSpace(*fOutputFilters)+":", ":")
+	}
+
+	aggregatorFilters, processorFilters := []string{}, []string{}
+	if *fAggregatorFilters != "" {
+		aggregatorFilters = strings.Split(":"+strings.TrimSpace(*fAggregatorFilters)+":", ":")
+	}
+	if *fProcessorFilters != "" {
+		processorFilters = strings.Split(":"+strings.TrimSpace(*fProcessorFilters)+":", ":")
+	}
+
+	logger.SetupLogging(logger.LogConfig{})
+
+	// Load external plugins, if requested.
+	if *fPlugins != "" {
+		log.Printf("I! Loading external plugins from: %s", *fPlugins)
+		if err := goplugin.LoadExternalPlugins(*fPlugins); err != nil {
+			log.Fatal("E! " + err.Error())
+		}
+	}
+
+	if *pprofAddr != "" {
+		go func() {
+			pprofHostPort := *pprofAddr
+			parts := strings.Split(pprofHostPort, ":")
+			if len(parts) == 2 && parts[0] == "" {
+				pprofHostPort = fmt.Sprintf("localhost:%s", parts[1])
+			}
+			pprofHostPort = "http://" + pprofHostPort + "/debug/pprof"
+
+			log.Printf("I! Starting pprof HTTP server at: %s", pprofHostPort)
+
+			if err := http.ListenAndServe(*pprofAddr, nil); err != nil {
+				log.Fatal("E! " + err.Error())
+			}
+		}()
+	}
+
+	if len(args) > 0 {
+		switch args[0] {
+		case "version":
+			fmt.Println(formatFullVersion())
+			return
+		case "config":
+			config.PrintSampleConfig(
+				sectionFilters,
+				inputFilters,
+				outputFilters,
+				aggregatorFilters,
+				processorFilters,
+			)
+			return
+		}
+	}
+
+	// switch for flags which just do something and exit immediately
+	switch {
+	case *fOutputList:
+		fmt.Println("Available Output Plugins: ")
+		names := make([]string, 0, len(outputs.Outputs))
+		for k := range outputs.Outputs {
+			names = append(names, k)
+		}
+		sort.Strings(names)
+		for _, k := range names {
+			fmt.Printf("  %s\n", k)
+		}
+		return
+	case *fInputList:
+		fmt.Println("Available Input Plugins:")
+		names := make([]string, 0, len(inputs.Inputs))
+		for k := range inputs.Inputs {
+			names = append(names, k)
+		}
+		sort.Strings(names)
+		for _, k := range names {
+			fmt.Printf("  %s\n", k)
+		}
+		return
+	case *fVersion:
+		fmt.Println(formatFullVersion())
+		return
+	case *fSampleConfig:
+		config.PrintSampleConfig(
+			sectionFilters,
+			inputFilters,
+			outputFilters,
+			aggregatorFilters,
+			processorFilters,
+		)
+		return
+	case *fUsage != "":
+		err := config.PrintInputConfig(*fUsage)
+		err2 := config.PrintOutputConfig(*fUsage)
+		if err != nil && err2 != nil {
+			log.Fatalf("E! %s and %s", err, err2)
+		}
+		return
+	}
+
+	shortVersion := version
+	if shortVersion == "" {
+		shortVersion = "unknown"
+	}
+
+	// Configure version
+	if err := internal.SetVersion(shortVersion); err != nil {
+		log.Println("Telegraf version already configured to: " + internal.Version())
+	}
+
+	run(
+		inputFilters,
+		outputFilters,
+		aggregatorFilters,
+		processorFilters,
+	)
 }

cmd/telegraf/telegraf_posix.go

@@ -0,0 +1,13 @@
+// +build !windows
+
+package main
+
+func run(inputFilters, outputFilters, aggregatorFilters, processorFilters []string) {
+	stop = make(chan struct{})
+	reloadLoop(
+		inputFilters,
+		outputFilters,
+		aggregatorFilters,
+		processorFilters,
+	)
+}

cmd/telegraf/telegraf_windows.go

@@ -0,0 +1,124 @@
+// +build windows
+
+package main
+
+import (
+	"log"
+	"os"
+	"runtime"
+
+	"github.com/influxdata/telegraf/logger"
+	"github.com/kardianos/service"
+)
+
+func run(inputFilters, outputFilters, aggregatorFilters, processorFilters []string) {
+	if runtime.GOOS == "windows" && windowsRunAsService() {
+		runAsWindowsService(
+			inputFilters,
+			outputFilters,
+			aggregatorFilters,
+			processorFilters,
+		)
+	} else {
+		stop = make(chan struct{})
+		reloadLoop(
+			inputFilters,
+			outputFilters,
+			aggregatorFilters,
+			processorFilters,
+		)
+	}
+}
+
+type program struct {
+	inputFilters      []string
+	outputFilters     []string
+	aggregatorFilters []string
+	processorFilters  []string
+}
+
+func (p *program) Start(s service.Service) error {
+	go p.run()
+	return nil
+}
+func (p *program) run() {
+	stop = make(chan struct{})
+	reloadLoop(
+		p.inputFilters,
+		p.outputFilters,
+		p.aggregatorFilters,
+		p.processorFilters,
+	)
+}
+func (p *program) Stop(s service.Service) error {
+	close(stop)
+	return nil
+}
+
+func runAsWindowsService(inputFilters, outputFilters, aggregatorFilters, processorFilters []string) {
+	programFiles := os.Getenv("ProgramFiles")
+	if programFiles == "" { // Should never happen
+		programFiles = "C:\\Program Files"
+	}
+	svcConfig := &service.Config{
+		Name:        *fServiceName,
+		DisplayName: *fServiceDisplayName,
+		Description: "Collects data using a series of plugins and publishes it to " +
+			"another series of plugins.",
+		Arguments: []string{"--config", programFiles + "\\Telegraf\\telegraf.conf"},
+	}
+
+	prg := &program{
+		inputFilters:      inputFilters,
+		outputFilters:     outputFilters,
+		aggregatorFilters: aggregatorFilters,
+		processorFilters:  processorFilters,
+	}
+	s, err := service.New(prg, svcConfig)
+	if err != nil {
+		log.Fatal("E! " + err.Error())
+	}
+	// Handle the --service flag here to prevent any issues with tooling that
+	// may not have an interactive session, e.g. installing from Ansible.
+	if *fService != "" {
+		if *fConfig != "" {
+			svcConfig.Arguments = []string{"--config", *fConfig}
+		}
+		if *fConfigDirectory != "" {
+			svcConfig.Arguments = append(svcConfig.Arguments, "--config-directory", *fConfigDirectory)
+		}
+		//set servicename to service cmd line, to have a custom name after relaunch as a service
+		svcConfig.Arguments = append(svcConfig.Arguments, "--service-name", *fServiceName)
+
+		err := service.Control(s, *fService)
+		if err != nil {
+			log.Fatal("E! " + err.Error())
+		}
+		os.Exit(0)
+	} else {
+		winlogger, err := s.Logger(nil)
+		if err == nil {
+			//When in service mode, register eventlog target andd setup default logging to eventlog
+			logger.RegisterEventLogger(winlogger)
+			logger.SetupLogging(logger.LogConfig{LogTarget: logger.LogTargetEventlog})
+		}
+		err = s.Run()
+
+		if err != nil {
+			log.Println("E! " + err.Error())
+		}
+	}
+}
+
+// Return true if Telegraf should create a Windows service.
+func windowsRunAsService() bool {
+	if *fService != "" {
+		return true
+	}
+
+	if *fRunAsConsole {
+		return false
+	}
+
+	return !service.Interactive()
+}

config/aws/credentials.go

@@ -9,13 +9,14 @@ import (
 )
 
 type CredentialConfig struct {
-	Region    string
+	Region      string
-	AccessKey string
+	AccessKey   string
-	SecretKey string
+	SecretKey   string
-	RoleARN   string
+	RoleARN     string
-	Profile   string
+	Profile     string
-	Filename  string
+	Filename    string
-	Token     string
+	Token       string
+	EndpointURL string
 }
 
 func (c *CredentialConfig) Credentials() client.ConfigProvider {
@@ -28,7 +29,8 @@ func (c *CredentialConfig) Credentials() client.ConfigProvider {
 
 func (c *CredentialConfig) rootCredentials() client.ConfigProvider {
 	config := &aws.Config{
-		Region: aws.String(c.Region),
+		Region:   aws.String(c.Region),
+		Endpoint: &c.EndpointURL,
 	}
 	if c.AccessKey != "" || c.SecretKey != "" {
 		config.Credentials = credentials.NewStaticCredentials(c.AccessKey, c.SecretKey, c.Token)
@@ -42,7 +44,8 @@ func (c *CredentialConfig) rootCredentials() client.ConfigProvider {
 func (c *CredentialConfig) assumeCredentials() client.ConfigProvider {
 	rootCredentials := c.rootCredentials()
 	config := &aws.Config{
-		Region: aws.String(c.Region),
+		Region:   aws.String(c.Region),
+		Endpoint: &c.EndpointURL,
 	}
 	config.Credentials = stscreds.NewCredentials(rootCredentials, c.RoleARN)
 	return session.New(config)

config/config_test.go

@@ -5,14 +5,17 @@ import (
 	"testing"
 	"time"
 
-	"github.com/influxdata/telegraf/internal/models"
+	"github.com/influxdata/telegraf/internal"
+	"github.com/influxdata/telegraf/models"
 	"github.com/influxdata/telegraf/plugins/inputs"
 	"github.com/influxdata/telegraf/plugins/inputs/exec"
+	"github.com/influxdata/telegraf/plugins/inputs/http_listener_v2"
 	"github.com/influxdata/telegraf/plugins/inputs/memcached"
 	"github.com/influxdata/telegraf/plugins/inputs/procstat"
+	httpOut "github.com/influxdata/telegraf/plugins/outputs/http"
 	"github.com/influxdata/telegraf/plugins/parsers"
-
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestConfig_LoadSingleInputWithEnvVars(t *testing.T) {
@@ -28,17 +31,17 @@ func TestConfig_LoadSingleInputWithEnvVars(t *testing.T) {
 
 	filter := models.Filter{
 		NameDrop:  []string{"metricname2"},
-		NamePass:  []string{"metricname1"},
+		NamePass:  []string{"metricname1", "ip_192.168.1.1_name"},
 		FieldDrop: []string{"other", "stuff"},
 		FieldPass: []string{"some", "strings"},
 		TagDrop: []models.TagFilter{
-			models.TagFilter{
+			{
 				Name:   "badtag",
 				Filter: []string{"othertag"},
 			},
 		},
 		TagPass: []models.TagFilter{
-			models.TagFilter{
+			{
 				Name:   "goodtag",
 				Filter: []string{"mytag"},
 			},
@@ -71,13 +74,13 @@ func TestConfig_LoadSingleInput(t *testing.T) {
 		FieldDrop: []string{"other", "stuff"},
 		FieldPass: []string{"some", "strings"},
 		TagDrop: []models.TagFilter{
-			models.TagFilter{
+			{
 				Name:   "badtag",
 				Filter: []string{"othertag"},
 			},
 		},
 		TagPass: []models.TagFilter{
-			models.TagFilter{
+			{
 				Name:   "goodtag",
 				Filter: []string{"mytag"},
 			},
@@ -117,13 +120,13 @@ func TestConfig_LoadDirectory(t *testing.T) {
 		FieldDrop: []string{"other", "stuff"},
 		FieldPass: []string{"some", "strings"},
 		TagDrop: []models.TagFilter{
-			models.TagFilter{
+			{
 				Name:   "badtag",
 				Filter: []string{"othertag"},
 			},
 		},
 		TagPass: []models.TagFilter{
-			models.TagFilter{
+			{
 				Name:   "goodtag",
 				Filter: []string{"mytag"},
 			},
@@ -143,7 +146,11 @@ func TestConfig_LoadDirectory(t *testing.T) {
 		"Testdata did not produce correct memcached metadata.")
 
 	ex := inputs.Inputs["exec"]().(*exec.Exec)
-	p, err := parsers.NewJSONParser("exec", nil, nil)
+	p, err := parsers.NewParser(&parsers.Config{
+		MetricName: "exec",
+		DataFormat: "json",
+		JSONStrict: true,
+	})
 	assert.NoError(t, err)
 	ex.SetParser(p)
 	ex.Command = "/usr/bin/myothercollector --foo=bar"
@@ -152,6 +159,11 @@ func TestConfig_LoadDirectory(t *testing.T) {
 		MeasurementSuffix: "_myothercollector",
 	}
 	eConfig.Tags = make(map[string]string)
+
+	exec := c.Inputs[1].Input.(*exec.Exec)
+	require.NotNil(t, exec.Log)
+	exec.Log = nil
+
 	assert.Equal(t, ex, c.Inputs[1].Input,
 		"Merged Testdata did not produce a correct exec struct.")
 	assert.Equal(t, eConfig, c.Inputs[1].Config,
@@ -174,3 +186,74 @@ func TestConfig_LoadDirectory(t *testing.T) {
 	assert.Equal(t, pConfig, c.Inputs[3].Config,
 		"Merged Testdata did not produce correct procstat metadata.")
 }
+
+func TestConfig_LoadSpecialTypes(t *testing.T) {
+	c := NewConfig()
+	err := c.LoadConfig("./testdata/special_types.toml")
+	assert.NoError(t, err)
+	require.Equal(t, 1, len(c.Inputs))
+
+	inputHTTPListener, ok := c.Inputs[0].Input.(*http_listener_v2.HTTPListenerV2)
+	assert.Equal(t, true, ok)
+	// Tests telegraf duration parsing.
+	assert.Equal(t, internal.Duration{Duration: time.Second}, inputHTTPListener.WriteTimeout)
+	// Tests telegraf size parsing.
+	assert.Equal(t, internal.Size{Size: 1024 * 1024}, inputHTTPListener.MaxBodySize)
+	// Tests toml multiline basic strings.
+	assert.Equal(t, "/path/to/my/cert\n", inputHTTPListener.TLSCert)
+}
+
+func TestConfig_FieldNotDefined(t *testing.T) {
+	c := NewConfig()
+	err := c.LoadConfig("./testdata/invalid_field.toml")
+	require.Error(t, err, "invalid field name")
+	assert.Equal(t, "Error loading config file ./testdata/invalid_field.toml: Error parsing http_listener_v2, line 2: field corresponding to `not_a_field' is not defined in http_listener_v2.HTTPListenerV2", err.Error())
+
+}
+
+func TestConfig_WrongFieldType(t *testing.T) {
+	c := NewConfig()
+	err := c.LoadConfig("./testdata/wrong_field_type.toml")
+	require.Error(t, err, "invalid field type")
+	assert.Equal(t, "Error loading config file ./testdata/wrong_field_type.toml: Error parsing http_listener_v2, line 2: (http_listener_v2.HTTPListenerV2.Port) cannot unmarshal TOML string into int", err.Error())
+
+	c = NewConfig()
+	err = c.LoadConfig("./testdata/wrong_field_type2.toml")
+	require.Error(t, err, "invalid field type2")
+	assert.Equal(t, "Error loading config file ./testdata/wrong_field_type2.toml: Error parsing http_listener_v2, line 2: (http_listener_v2.HTTPListenerV2.Methods) cannot unmarshal TOML string into []string", err.Error())
+}
+
+func TestConfig_InlineTables(t *testing.T) {
+	// #4098
+	c := NewConfig()
+	err := c.LoadConfig("./testdata/inline_table.toml")
+	assert.NoError(t, err)
+	require.Equal(t, 2, len(c.Outputs))
+
+	outputHTTP, ok := c.Outputs[1].Output.(*httpOut.HTTP)
+	assert.Equal(t, true, ok)
+	assert.Equal(t, map[string]string{"Authorization": "Token $TOKEN", "Content-Type": "application/json"}, outputHTTP.Headers)
+	assert.Equal(t, []string{"org_id"}, c.Outputs[0].Config.Filter.TagInclude)
+}
+
+func TestConfig_SliceComment(t *testing.T) {
+	t.Skipf("Skipping until #3642 is resolved")
+
+	c := NewConfig()
+	err := c.LoadConfig("./testdata/slice_comment.toml")
+	assert.NoError(t, err)
+	require.Equal(t, 1, len(c.Outputs))
+
+	outputHTTP, ok := c.Outputs[0].Output.(*httpOut.HTTP)
+	assert.Equal(t, []string{"test"}, outputHTTP.Scopes)
+	assert.Equal(t, true, ok)
+}
+
+func TestConfig_BadOrdering(t *testing.T) {
+	// #3444: when not using inline tables, care has to be taken so subsequent configuration
+	// doesn't become part of the table. This is not a bug, but TOML syntax.
+	c := NewConfig()
+	err := c.LoadConfig("./testdata/non_slice_slice.toml")
+	require.Error(t, err, "bad ordering")
+	assert.Equal(t, "Error loading config file ./testdata/non_slice_slice.toml: Error parsing http array, line 4: cannot unmarshal TOML array into string (need slice)", err.Error())
+}

config/testdata/inline_table.toml

@@ -0,0 +1,7 @@
+[[outputs.http]]
+    headers = { Authorization = "Token $TOKEN",Content-Type = "application/json" }
+    taginclude = ["org_id"]
+
+[[outputs.http]]
+    headers = { Authorization = "Token $TOKEN",Content-Type = "application/json" }
+    taginclude = ["org_id"]

config/testdata/invalid_field.toml

@@ -0,0 +1,2 @@
+[[inputs.http_listener_v2]]
+  not_a_field = true

config/testdata/non_slice_slice.toml

@@ -0,0 +1,4 @@
+[[outputs.http]]
+  [outputs.http.headers]
+    Content-Type = "application/json"
+  taginclude = ["org_id"]

config/testdata/single_plugin_env_vars.toml

@@ -1,6 +1,6 @@
 [[inputs.memcached]]
   servers = ["$MY_TEST_SERVER"]
-  namepass = ["metricname1"]
+  namepass = ["metricname1", "ip_${MY_TEST_SERVER}_name"]
   namedrop = ["metricname2"]
   fieldpass = ["some", "strings"]
   fielddrop = ["other", "stuff"]

config/testdata/slice_comment.toml

@@ -0,0 +1,5 @@
+[[outputs.http]]
+  scopes = [
+    # comment
+    "test" # comment
+  ]

config/testdata/special_types.toml

@@ -0,0 +1,9 @@
+[[inputs.http_listener_v2]]
+  write_timeout = "1s"
+  max_body_size = "1MiB"
+  tls_cert = """
+/path/to/my/cert
+"""
+  tls_key = '''
+/path/to/my/key
+'''

config/testdata/telegraf-agent.toml

@@ -60,7 +60,7 @@
   # Kafka topic for producer messages
   topic = "telegraf"
   # Telegraf tag to use as a routing key
-  #  ie, if this tag exists, it's value will be used as the routing key
+  #  ie, if this tag exists, its value will be used as the routing key
   routing_tag = "host"
 
 
@@ -143,19 +143,31 @@
 [[inputs.diskio]]
   # no configuration
 
-# read metrics from a Kafka topic
+# read metrics from a Kafka 0.9+ topic
 [[inputs.kafka_consumer]]
-  # topic(s) to consume
+  ## kafka brokers
+  brokers = ["localhost:9092"]
+  ## topic(s) to consume
+  topics = ["telegraf"]
+  ## the name of the consumer group
+  consumer_group = "telegraf_metrics_consumers"
+  ## Offset (must be either "oldest" or "newest")
+  offset = "oldest"
+
+# read metrics from a Kafka legacy topic
+[[inputs.kafka_consumer_legacy]]
+  ## topic(s) to consume
   topics = ["telegraf"]
   # an array of Zookeeper connection strings
   zookeeper_peers = ["localhost:2181"]
-  # the name of the consumer group
+  ## the name of the consumer group
   consumer_group = "telegraf_metrics_consumers"
   # Maximum number of points to buffer between collection intervals
   point_buffer = 100000
-  # Offset (must be either "oldest" or "newest")
+  ## Offset (must be either "oldest" or "newest")
   offset = "oldest"
 
+
 # Read metrics from a LeoFS Server via SNMP
 [[inputs.leofs]]
   # An array of URI to gather stats about LeoFS.
@@ -244,7 +256,7 @@
   # specify address via a url matching:
   #   postgres://[pqgotest[:password]]@localhost[/dbname]?sslmode=[disable|verify-ca|verify-full]
   # or a simple string:
-  #   host=localhost user=pqotest password=... sslmode=... dbname=app_production
+  #   host=localhost user=pqgotest password=... sslmode=... dbname=app_production
   #
   # All connection parameters are optional. By default, the host is localhost
   # and the user is the currently running user. For localhost, we default

config/testdata/wrong_field_type.toml

@@ -0,0 +1,2 @@
+[[inputs.http_listener_v2]]
+  port = "80"

config/testdata/wrong_field_type2.toml

@@ -0,0 +1,2 @@
+[[inputs.http_listener_v2]]
+  methods = "POST"

config/types.go

@@ -0,0 +1,88 @@
+package config
+
+import (
+	"bytes"
+	"strconv"
+	"time"
+
+	"github.com/alecthomas/units"
+)
+
+// Duration is a time.Duration
+type Duration time.Duration
+
+// Size is an int64
+type Size int64
+
+// Number is a float
+type Number float64
+
+// UnmarshalTOML parses the duration from the TOML config file
+func (d Duration) UnmarshalTOML(b []byte) error {
+	var err error
+	b = bytes.Trim(b, `'`)
+
+	// see if we can directly convert it
+	dur, err := time.ParseDuration(string(b))
+	if err == nil {
+		d = Duration(dur)
+		return nil
+	}
+
+	// Parse string duration, ie, "1s"
+	if uq, err := strconv.Unquote(string(b)); err == nil && len(uq) > 0 {
+		dur, err := time.ParseDuration(uq)
+		if err == nil {
+			d = Duration(dur)
+			return nil
+		}
+	}
+
+	// First try parsing as integer seconds
+	sI, err := strconv.ParseInt(string(b), 10, 64)
+	if err == nil {
+		dur := time.Second * time.Duration(sI)
+		d = Duration(dur)
+		return nil
+	}
+	// Second try parsing as float seconds
+	sF, err := strconv.ParseFloat(string(b), 64)
+	if err == nil {
+		dur := time.Second * time.Duration(sF)
+		d = Duration(dur)
+		return nil
+	}
+
+	return nil
+}
+
+func (s Size) UnmarshalTOML(b []byte) error {
+	var err error
+	b = bytes.Trim(b, `'`)
+
+	val, err := strconv.ParseInt(string(b), 10, 64)
+	if err == nil {
+		s = Size(val)
+		return nil
+	}
+	uq, err := strconv.Unquote(string(b))
+	if err != nil {
+		return err
+	}
+	val, err = units.ParseStrictBytes(uq)
+	if err != nil {
+		return err
+	}
+	s = Size(val)
+	return nil
+}
+
+func (n Number) UnmarshalTOML(b []byte) error {
+	value, err := strconv.ParseFloat(string(b), 64)
+	if err != nil {
+		return err
+	}
+
+	n = Number(value)
+	return nil
+}

docker-compose.yml

@@ -0,0 +1,102 @@
+version: '3'
+
+services:
+  aerospike:
+    image: aerospike/aerospike-server:3.9.0
+    ports:
+      - "3000:3000"
+  zookeeper:
+    image: wurstmeister/zookeeper
+    environment:
+      - JAVA_OPTS="-Xms256m -Xmx256m"
+    ports:
+      - "2181:2181"
+  kafka:
+    image: wurstmeister/kafka
+    environment:
+      - KAFKA_ADVERTISED_HOST_NAME=localhost
+      - KAFKA_ADVERTISED_PORT=9092
+      - KAFKA_ZOOKEEPER_CONNECT=zookeeper:2181
+      - KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR=1
+      - JAVA_OPTS="-Xms256m -Xmx256m"
+    ports:
+      - "9092:9092"
+    depends_on:
+      - zookeeper
+  elasticsearch:
+    image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
+    environment:
+    - "ES_JAVA_OPTS=-Xms256m -Xmx256m"
+    - discovery.type=single-node
+    - xpack.security.enabled=false
+    ports:
+      - "9200:9200"
+  mysql:
+    image: mysql
+    environment:
+      - MYSQL_ALLOW_EMPTY_PASSWORD=yes
+    ports:
+      - "3306:3306"
+  memcached:
+    image: memcached
+    ports:
+      - "11211:11211"
+  pgbouncer:
+    image: mbentley/ubuntu-pgbouncer
+    environment:
+      - PG_ENV_POSTGRESQL_USER=pgbouncer
+      - PG_ENV_POSTGRESQL_PASS=pgbouncer
+    ports:
+      - "6432:6432"
+  postgres:
+    image: postgres:alpine
+    environment: 
+      - POSTGRES_HOST_AUTH_METHOD=trust
+    ports:
+      - "5432:5432"
+  rabbitmq:
+    image: rabbitmq:3-management
+    ports:
+      - "15672:15672"
+      - "5672:5672"
+  redis:
+    image: redis:alpine
+    ports:
+      - "6379:6379"
+  nsq:
+    image: nsqio/nsq
+    ports:
+      - "4150:4150"
+    command: "/nsqd"
+  mqtt:
+    image: ncarlier/mqtt
+    ports:
+      - "1883:1883"
+  riemann:
+    image: stealthly/docker-riemann
+    ports:
+      - "5555:5555"
+  nats:
+    image: nats
+    ports:
+      - "4222:4222"
+  openldap:
+    image: cobaugh/openldap-alpine
+    environment:
+      - SLAPD_CONFIG_ROOTDN="cn=manager,cn=config"
+      - SLAPD_CONFIG_ROOTPW="secret"
+    ports:
+      - "389:389"
+      - "636:636"
+  crate:
+    image: crate/crate
+    ports:
+      - "4200:4200"
+      - "4230:4230"
+      - "6543:5432"
+    command:
+      - crate
+      - -Cnetwork.host=0.0.0.0
+      - -Ctransport.host=localhost
+    environment:
+      - CRATE_HEAP_SIZE=128m

docs/AGGREGATORS.md

@@ -0,0 +1,132 @@
+### Aggregator Plugins
+
+This section is for developers who want to create a new aggregator plugin.
+
+### Aggregator Plugin Guidelines
+
+* A aggregator must conform to the [telegraf.Aggregator][] interface.
+* Aggregators should call `aggregators.Add` in their `init` function to
+  register themselves.  See below for a quick example.
+* To be available within Telegraf itself, plugins must add themselves to the
+  `github.com/influxdata/telegraf/plugins/aggregators/all/all.go` file.
+- The `SampleConfig` function should return valid toml that describes how the
+  plugin can be configured. This is included in `telegraf config`.  Please
+  consult the [SampleConfig][] page for the latest style guidelines.
+* The `Description` function should say in one line what this aggregator does.
+* The Aggregator plugin will need to keep caches of metrics that have passed
+  through it. This should be done using the builtin `HashID()` function of
+  each metric.
+* When the `Reset()` function is called, all caches should be cleared.
+- Follow the recommended [CodeStyle][].
+
+### Aggregator Plugin Example
+
+```go
+package min
+
+// min.go
+
+import (
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/aggregators"
+)
+
+type Min struct {
+	// caches for metric fields, names, and tags
+	fieldCache map[uint64]map[string]float64
+	nameCache  map[uint64]string
+	tagCache   map[uint64]map[string]string
+}
+
+func NewMin() telegraf.Aggregator {
+	m := &Min{}
+	m.Reset()
+	return m
+}
+
+var sampleConfig = `
+  ## period is the flush & clear interval of the aggregator.
+  period = "30s"
+  ## If true drop_original will drop the original metrics and
+  ## only send aggregates.
+  drop_original = false
+`
+
+func (m *Min) Init() error {
+	return nil
+}
+
+func (m *Min) SampleConfig() string {
+	return sampleConfig
+}
+
+func (m *Min) Description() string {
+	return "Keep the aggregate min of each metric passing through."
+}
+
+func (m *Min) Add(in telegraf.Metric) {
+	id := in.HashID()
+	if _, ok := m.nameCache[id]; !ok {
+		// hit an uncached metric, create caches for first time:
+		m.nameCache[id] = in.Name()
+		m.tagCache[id] = in.Tags()
+		m.fieldCache[id] = make(map[string]float64)
+		for k, v := range in.Fields() {
+			if fv, ok := convert(v); ok {
+				m.fieldCache[id][k] = fv
+			}
+		}
+	} else {
+		for k, v := range in.Fields() {
+			if fv, ok := convert(v); ok {
+				if _, ok := m.fieldCache[id][k]; !ok {
+					// hit an uncached field of a cached metric
+					m.fieldCache[id][k] = fv
+					continue
+				}
+				if fv < m.fieldCache[id][k] {
+                    // set new minimum
+					m.fieldCache[id][k] = fv
+				}
+			}
+		}
+	}
+}
+
+func (m *Min) Push(acc telegraf.Accumulator) {
+	for id, _ := range m.nameCache {
+		fields := map[string]interface{}{}
+		for k, v := range m.fieldCache[id] {
+			fields[k+"_min"] = v
+		}
+		acc.AddFields(m.nameCache[id], fields, m.tagCache[id])
+	}
+}
+
+func (m *Min) Reset() {
+	m.fieldCache = make(map[uint64]map[string]float64)
+	m.nameCache = make(map[uint64]string)
+	m.tagCache = make(map[uint64]map[string]string)
+}
+
+func convert(in interface{}) (float64, bool) {
+	switch v := in.(type) {
+	case float64:
+		return v, true
+	case int64:
+		return float64(v), true
+	default:
+		return 0, false
+	}
+}
+
+func init() {
+	aggregators.Add("min", func() telegraf.Aggregator {
+		return NewMin()
+	})
+}
+```
+
+[telegraf.Aggregator]: https://godoc.org/github.com/influxdata/telegraf#Aggregator
+[SampleConfig]: https://github.com/influxdata/telegraf/wiki/SampleConfig
+[CodeStyle]: https://github.com/influxdata/telegraf/wiki/CodeStyle

docs/AGGREGATORS_AND_PROCESSORS.md

@@ -0,0 +1,67 @@
+# Telegraf Aggregator & Processor Plugins
+
+As of release 1.1.0, Telegraf has the concept of Aggregator and Processor Plugins.
+
+These plugins sit in-between Input & Output plugins, aggregating and processing
+metrics as they pass through Telegraf:
+
+```
+┌───────────┐
+│           │
+│    CPU    │───┐
+│           │   │
+└───────────┘   │
+                │
+┌───────────┐   │                                              ┌───────────┐
+│           │   │                                              │           │
+│  Memory   │───┤                                          ┌──▶│ InfluxDB  │
+│           │   │                                          │   │           │
+└───────────┘   │    ┌─────────────┐     ┌─────────────┐   │   └───────────┘
+                │    │             │     │Aggregate    │   │
+┌───────────┐   │    │Process      │     │ - mean      │   │   ┌───────────┐
+│           │   │    │ - transform │     │ - quantiles │   │   │           │
+│   MySQL   │───┼───▶│ - decorate  │────▶│ - min/max   │───┼──▶│   File    │
+│           │   │    │ - filter    │     │ - count     │   │   │           │
+└───────────┘   │    │             │     │             │   │   └───────────┘
+                │    └─────────────┘     └─────────────┘   │
+┌───────────┐   │                                          │   ┌───────────┐
+│           │   │                                          │   │           │
+│   SNMP    │───┤                                          └──▶│   Kafka   │
+│           │   │                                              │           │
+└───────────┘   │                                              └───────────┘
+                │
+┌───────────┐   │
+│           │   │
+│  Docker   │───┘
+│           │
+└───────────┘
+```
+
+Both Aggregators and Processors analyze metrics as they pass through Telegraf.
+
+Use [measurement filtering](CONFIGURATION.md#measurement-filtering)
+to control which metrics are passed through a processor or aggregator.  If a
+metric is filtered out the metric bypasses the plugin and is passed downstream
+to the next plugin.
+
+### Processor
+Processor plugins process metrics as they pass through and immediately emit
+results based on the values they process. For example, this could be printing
+all metrics or adding a tag to all metrics that pass through.
+
+### Aggregator
+Aggregator plugins, on the other hand, are a bit more complicated. Aggregators
+are typically for emitting new _aggregate_ metrics, such as a running mean,
+minimum, maximum, or standard deviation. For this reason, all _aggregator_
+plugins are configured with a `period`. The `period` is the size of the window
+of metrics that each _aggregate_ represents. In other words, the emitted
+_aggregate_ metric will be the aggregated value of the past `period` seconds.
+Since many users will only care about their aggregates and not every single metric
+gathered, there is also a `drop_original` argument, which tells Telegraf to only
+emit the aggregates and not the original metrics.
+
+Since aggregates are created for each measurement, field, and unique tag combination
+the plugin receives, you can make use of `taginclude` to group
+aggregates by specific tags only. 
+
+**Note:** Aggregator plugins only aggregate metrics within their periods (`now() - period`). Data with a timestamp earlier than `now() - period` cannot be included.

docs/CONFIGURATION.md

@@ -1,142 +1,462 @@
-# Telegraf Configuration
+# Configuration
 
-## Generating a Configuration File
+Telegraf's configuration file is written using [TOML][] and is composed of
+three sections: [global tags][], [agent][] settings, and [plugins][].
 
-A default Telegraf config file can be generated using the -sample-config flag:
+View the default [telegraf.conf][] config file with all available plugins.
 
-```
+### Generating a Configuration File
-telegraf -sample-config > telegraf.conf
+
+A default config file can be generated by telegraf:
+```sh
+telegraf config > telegraf.conf
 ```
 
 To generate a file with specific inputs and outputs, you can use the
--input-filter and -output-filter flags:
+--input-filter and --output-filter flags:
 
-```
+```sh
-telegraf -sample-config -input-filter cpu:mem:net:swap -output-filter influxdb:kafka
+telegraf --input-filter cpu:mem:net:swap --output-filter influxdb:kafka config
 ```
 
-You can see the latest config file with all available plugins here:
+### Configuration Loading
-[telegraf.conf](https://github.com/influxdata/telegraf/blob/master/etc/telegraf.conf)
 
-## Environment Variables
+The location of the configuration file can be set via the `--config` command
+line flag.
 
-Environment variables can be used anywhere in the config file, simply prepend
+When the `--config-directory` command line flag is used files ending with
-them with $. For strings the variable must be within quotes (ie, "$STR_VAR"),
+`.conf` in the specified directory will also be included in the Telegraf
-for numbers and booleans they should be plain (ie, $INT_VAR, $BOOL_VAR)
+configuration.
 
-## `[global_tags]` Configuration
+On most systems, the default locations are `/etc/telegraf/telegraf.conf` for
+the main configuration file and `/etc/telegraf/telegraf.d` for the directory of
+configuration files.
 
-Global tags can be specified in the `[global_tags]` section of the config file
+### Environment Variables
-in key="value" format. All metrics being gathered on this host will be tagged
-with the tags specified here.
 
-## `[agent]` Configuration
+Environment variables can be used anywhere in the config file, simply surround
+them with `${}`.  Replacement occurs before file parsing.   For strings
+the variable must be within quotes, e.g., `"${STR_VAR}"`, for numbers and booleans
+they should be unquoted, e.g., `${INT_VAR}`, `${BOOL_VAR}`.
 
-Telegraf has a few options you can configure under the `agent` section of the
+When using the `.deb` or `.rpm` packages, you can define environment variables
-config.
+in the `/etc/default/telegraf` file.
 
-* **interval**: Default data collection interval for all inputs
+**Example**:
-* **round_interval**: Rounds collection interval to 'interval'
-ie, if interval="10s" then always collect on :00, :10, :20, etc.
-* **metric_batch_size**: Telegraf will send metrics to output in batch of at
-most metric_batch_size metrics.
-* **metric_buffer_limit**: Telegraf will cache metric_buffer_limit metrics
-for each output, and will flush this buffer on a successful write.
-This should be a multiple of metric_batch_size and could not be less
-than 2 times metric_batch_size.
-* **collection_jitter**: Collection jitter is used to jitter
-the collection by a random amount.
-Each plugin will sleep for a random time within jitter before collecting.
-This can be used to avoid many plugins querying things like sysfs at the
-same time, which can have a measurable effect on the system.
-* **flush_interval**: Default data flushing interval for all outputs.
-You should not set this below
-interval. Maximum flush_interval will be flush_interval + flush_jitter
-* **flush_jitter**: Jitter the flush interval by a random amount.
-This is primarily to avoid
-large write spikes for users running a large number of telegraf instances.
-ie, a jitter of 5s and flush_interval 10s means flushes will happen every 10-15s.
-* **debug**: Run telegraf in debug mode.
-* **quiet**: Run telegraf in quiet mode.
-* **hostname**: Override default hostname, if empty use os.Hostname().
 
-#### Measurement Filtering
+`/etc/default/telegraf`:
+```
+USER="alice"
+INFLUX_URL="http://localhost:8086"
+INFLUX_SKIP_DATABASE_CREATION="true"
+INFLUX_PASSWORD="monkey123"
+```
 
-Filters can be configured per input or output, see below for examples.
+`/etc/telegraf.conf`:
+```toml
+[global_tags]
+  user = "${USER}"
 
-* **namepass**: An array of strings that is used to filter metrics generated by the
+[[inputs.mem]]
-current input. Each string in the array is tested as a glob match against
-measurement names and if it matches, the field is emitted.
-* **namedrop**: The inverse of pass, if a measurement name matches, it is not emitted.
-* **fieldpass**: An array of strings that is used to filter metrics generated by the
-current input. Each string in the array is tested as a glob match against field names
-and if it matches, the field is emitted. fieldpass is not available for outputs.
-* **fielddrop**: The inverse of pass, if a field name matches, it is not emitted.
-fielddrop is not available for outputs.
-* **tagpass**: tag names and arrays of strings that are used to filter
-measurements by the current input. Each string in the array is tested as a glob
-match against the tag name, and if it matches the measurement is emitted.
-* **tagdrop**: The inverse of tagpass. If a tag matches, the measurement is not
-emitted. This is tested on measurements that have passed the tagpass test.
-* **tagexclude**: tagexclude can be used to exclude a tag from measurement(s).
-As opposed to tagdrop, which will drop an entire measurement based on it's
-tags, tagexclude simply strips the given tag keys from the measurement. This
-can be used on inputs & outputs, but it is _recommended_ to be used on inputs,
-as it is more efficient to filter out tags at the ingestion point.
-* **taginclude**: taginclude is the inverse of tagexclude. It will only include
-the tag keys in the final measurement.
 
-**NOTE** `tagpass` and `tagdrop` parameters must be defined at the _end_ of
+[[outputs.influxdb]]
-the plugin definition, otherwise subsequent plugin config options will be
+  urls = ["${INFLUX_URL}"]
-interpreted as part of the tagpass/tagdrop map.
+  skip_database_creation = ${INFLUX_SKIP_DATABASE_CREATION}
+  password = "${INFLUX_PASSWORD}"
+```
 
-## Input Configuration
+The above files will produce the following effective configuration file to be
+parsed:
+```toml
+[global_tags]
+  user = "alice"
 
-Some configuration options are configurable per input:
+[[outputs.influxdb]]
+  urls = "http://localhost:8086"
+  skip_database_creation = true
+  password = "monkey123"
+```
 
-* **name_override**: Override the base name of the measurement.
+### Intervals
-(Default is the name of the input).
-* **name_prefix**: Specifies a prefix to attach to the measurement name.
-* **name_suffix**: Specifies a suffix to attach to the measurement name.
-* **tags**: A map of tags to apply to a specific input's measurements.
-* **interval**: How often to gather this metric. Normal plugins use a single
-global interval, but if one particular input should be run less or more often,
-you can configure that here.
 
-#### Input Configuration Examples
+Intervals are durations of time and can be specified for supporting settings by
+combining an integer value and time unit as a string value.  Valid time units are
+`ns`, `us` (or `µs`), `ms`, `s`, `m`, `h`.
+```toml
+[agent]
+  interval = "10s"
+```
 
-This is a full working config that will output CPU data to an InfluxDB instance
+### Global Tags
-at 192.168.59.103:8086, tagging measurements with dc="denver-1". It will output
+
-measurements at a 10s interval and will collect per-cpu data, dropping any
+Global tags can be specified in the `[global_tags]` table in key="value"
-fields which begin with `time_`.
+format. All metrics that are gathered will be tagged with the tags specified.
 
 ```toml
 [global_tags]
-  dc = "denver-1"
+  dc = "us-east-1"
+```
 
-[agent]
+### Agent
-  interval = "10s"
 
-# OUTPUTS
+The agent table configures Telegraf and the defaults used across all plugins.
-[[outputs.influxdb]]
+
-  url = "http://192.168.59.103:8086" # required.
+- **interval**: Default data collection [interval][] for all inputs.
-  database = "telegraf" # required.
+
-  precision = "s"
+- **round_interval**: Rounds collection interval to [interval][]
+  ie, if interval="10s" then always collect on :00, :10, :20, etc.
+
+- **metric_batch_size**:
+  Telegraf will send metrics to outputs in batches of at most
+  metric_batch_size metrics.
+  This controls the size of writes that Telegraf sends to output plugins.
+
+- **metric_buffer_limit**:
+  Maximum number of unwritten metrics per output.  Increasing this value
+  allows for longer periods of output downtime without dropping metrics at the
+  cost of higher maximum memory usage.
+
+- **collection_jitter**:
+  Collection jitter is used to jitter the collection by a random [interval][].
+  Each plugin will sleep for a random time within jitter before collecting.
+  This can be used to avoid many plugins querying things like sysfs at the
+  same time, which can have a measurable effect on the system.
+
+- **flush_interval**:
+  Default flushing [interval][] for all outputs. Maximum flush_interval will be
+  flush_interval + flush_jitter.
+
+- **flush_jitter**:
+  Default flush jitter for all outputs. This jitters the flush [interval][]
+  by a random amount. This is primarily to avoid large write spikes for users
+  running a large number of telegraf instances. ie, a jitter of 5s and interval
+  10s means flushes will happen every 10-15s.
+
+
+- **precision**:
+  Collected metrics are rounded to the precision specified as an [interval][].
+
+  Precision will NOT be used for service inputs. It is up to each individual
+  service input to set the timestamp at the appropriate precision.
+
+- **debug**:
+  Log at debug level.
+
+- **quiet**:
+  Log only error level messages.
+
+- **logtarget**:
+  Log target controls the destination for logs and can be one of "file",
+  "stderr" or, on Windows, "eventlog".  When set to "file", the output file is
+  determined by the "logfile" setting.
+
+- **logfile**:
+  Name of the file to be logged to when using the "file" logtarget.  If set to
+  the empty string then logs are written to stderr.
+
+
+- **logfile_rotation_interval**:
+  The logfile will be rotated after the time interval specified.  When set to
+  0 no time based rotation is performed.
+
+- **logfile_rotation_max_size**:
+  The logfile will be rotated when it becomes larger than the specified size.
+  When set to 0 no size based rotation is performed.
+
+- **logfile_rotation_max_archives**:
+  Maximum number of rotated archives to keep, any older logs are deleted.  If
+  set to -1, no archives are removed.
+
+- **hostname**:
+  Override default hostname, if empty use os.Hostname()
+- **omit_hostname**:
+  If set to true, do no set the "host" tag in the telegraf agent.
+
+### Plugins
+
+Telegraf plugins are divided into 4 types: [inputs][], [outputs][],
+[processors][], and [aggregators][].
+
+Unlike the `global_tags` and `agent` tables, any plugin can be defined
+multiple times and each instance will run independently.  This allows you to
+have plugins defined with differing configurations as needed within a single
+Telegraf process.
+
+Each plugin has a unique set of configuration options, reference the
+sample configuration for details.  Additionally, several options are available
+on any plugin depending on its type.
+
+### Input Plugins
+
+Input plugins gather and create metrics.  They support both polling and event
+driven operation.
+
+Parameters that can be used with any input plugin:
+
+- **alias**: Name an instance of a plugin.
+- **interval**: How often to gather this metric. Normal plugins use a single
+  global interval, but if one particular input should be run less or more
+  often, you can configure that here.
+- **name_override**: Override the base name of the measurement.  (Default is
+  the name of the input).
+- **name_prefix**: Specifies a prefix to attach to the measurement name.
+- **name_suffix**: Specifies a suffix to attach to the measurement name.
+- **tags**: A map of tags to apply to a specific input's measurements.
+
+The [metric filtering][] parameters can be used to limit what metrics are
+emitted from the input plugin.
+
+#### Examples
+
+Use the name_suffix parameter to emit measurements with the name `cpu_total`:
+```toml
+[[inputs.cpu]]
+  name_suffix = "_total"
+  percpu = false
+  totalcpu = true
+```
+
+Use the name_override parameter to emit measurements with the name `foobar`:
+```toml
+[[inputs.cpu]]
+  name_override = "foobar"
+  percpu = false
+  totalcpu = true
+```
+
+Emit measurements with two additional tags: `tag1=foo` and `tag2=bar`
+
+> **NOTE**: With TOML, order matters.  Parameters belong to the last defined
+> table header, place `[inputs.cpu.tags]` table at the _end_ of the plugin
+> definition.
+```toml
+[[inputs.cpu]]
+  percpu = false
+  totalcpu = true
+  [inputs.cpu.tags]
+    tag1 = "foo"
+    tag2 = "bar"
+```
+
+Utilize `name_override`, `name_prefix`, or `name_suffix` config options to
+avoid measurement collisions when defining multiple plugins:
+```toml
+[[inputs.cpu]]
+  percpu = false
+  totalcpu = true
 
-# INPUTS
 [[inputs.cpu]]
   percpu = true
   totalcpu = false
-  # filter all fields beginning with 'time_'
+  name_override = "percpu_usage"
-  fielddrop = ["time_*"]
+  fielddrop = ["cpu_time*"]
 ```
 
-#### Input Config: tagpass and tagdrop
+### Output Plugins
 
-**NOTE** `tagpass` and `tagdrop` parameters must be defined at the _end_ of
+Output plugins write metrics to a location.  Outputs commonly write to
-the plugin definition, otherwise subsequent plugin config options will be
+databases, network services, and messaging systems.
-interpreted as part of the tagpass/tagdrop map.
 
+Parameters that can be used with any output plugin:
+
+- **alias**: Name an instance of a plugin.
+- **flush_interval**: The maximum time between flushes.  Use this setting to
+  override the agent `flush_interval` on a per plugin basis.
+- **flush_jitter**: The amount of time to jitter the flush interval.  Use this
+  setting to override the agent `flush_jitter` on a per plugin basis.
+- **metric_batch_size**: The maximum number of metrics to send at once.  Use
+  this setting to override the agent `metric_batch_size` on a per plugin basis.
+- **metric_buffer_limit**: The maximum number of unsent metrics to buffer.
+  Use this setting to override the agent `metric_buffer_limit` on a per plugin
+  basis.
+- **name_override**: Override the original name of the measurement.
+- **name_prefix**: Specifies a prefix to attach to the measurement name.
+- **name_suffix**: Specifies a suffix to attach to the measurement name.
+
+The [metric filtering][] parameters can be used to limit what metrics are
+emitted from the output plugin.
+
+#### Examples
+
+Override flush parameters for a single output:
+```toml
+[agent]
+  flush_interval = "10s"
+  flush_jitter = "5s"
+  metric_batch_size = 1000
+
+[[outputs.influxdb]]
+  urls = [ "http://example.org:8086" ]
+  database = "telegraf"
+
+[[outputs.file]]
+  files = [ "stdout" ]
+  flush_interval = "1s"
+  flush_jitter = "1s"
+  metric_batch_size = 10
+```
+
+### Processor Plugins
+
+Processor plugins perform processing tasks on metrics and are commonly used to
+rename or apply transformations to metrics.  Processors are applied after the
+input plugins and before any aggregator plugins.
+
+Parameters that can be used with any processor plugin:
+
+- **alias**: Name an instance of a plugin.
+- **order**: The order in which the processor(s) are executed. If this is not
+  specified then processor execution order will be random.
+
+The [metric filtering][] parameters can be used to limit what metrics are
+handled by the processor.  Excluded metrics are passed downstream to the next
+processor.
+
+#### Examples
+
+If the order processors are applied matters you must set order on all involved
+processors:
+```toml
+[[processors.rename]]
+  order = 1
+  [[processors.rename.replace]]
+    tag = "path"
+    dest = "resource"
+
+[[processors.strings]]
+  order = 2
+  [[processors.strings.trim_prefix]]
+    tag = "resource"
+    prefix = "/api/"
+```
+
+### Aggregator Plugins
+
+Aggregator plugins produce new metrics after examining metrics over a time
+period, as the name suggests they are commonly used to produce new aggregates
+such as mean/max/min metrics.  Aggregators operate on metrics after any
+processors have been applied.
+
+Parameters that can be used with any aggregator plugin:
+
+- **alias**: Name an instance of a plugin.
+- **period**: The period on which to flush & clear each aggregator. All
+  metrics that are sent with timestamps outside of this period will be ignored
+  by the aggregator.
+- **delay**: The delay before each aggregator is flushed. This is to control
+  how long for aggregators to wait before receiving metrics from input
+  plugins, in the case that aggregators are flushing and inputs are gathering
+  on the same interval.
+- **grace**: The duration when the metrics will still be aggregated
+  by the plugin, even though they're outside of the aggregation period. This
+  is needed in a situation when the agent is expected to receive late metrics
+  and it's acceptable to roll them up into next aggregation period.
+- **drop_original**: If true, the original metric will be dropped by the
+  aggregator and will not get sent to the output plugins.
+- **name_override**: Override the base name of the measurement.  (Default is
+  the name of the input).
+- **name_prefix**: Specifies a prefix to attach to the measurement name.
+- **name_suffix**: Specifies a suffix to attach to the measurement name.
+- **tags**: A map of tags to apply to a specific input's measurements.
+
+The [metric filtering][] parameters can be used to limit what metrics are
+handled by the aggregator.  Excluded metrics are passed downstream to the next
+aggregator.
+
+#### Examples
+
+Collect and emit the min/max of the system load1 metric every 30s, dropping
+the originals.
+```toml
+[[inputs.system]]
+  fieldpass = ["load1"] # collects system load1 metric.
+
+[[aggregators.minmax]]
+  period = "30s"        # send & clear the aggregate every 30s.
+  drop_original = true  # drop the original metrics.
+
+[[outputs.file]]
+  files = ["stdout"]
+```
+
+Collect and emit the min/max of the swap metrics every 30s, dropping the
+originals. The aggregator will not be applied to the system load metrics due
+to the `namepass` parameter.
+```toml
+[[inputs.swap]]
+
+[[inputs.system]]
+  fieldpass = ["load1"] # collects system load1 metric.
+
+[[aggregators.minmax]]
+  period = "30s"        # send & clear the aggregate every 30s.
+  drop_original = true  # drop the original metrics.
+  namepass = ["swap"]   # only "pass" swap metrics through the aggregator.
+
+[[outputs.file]]
+  files = ["stdout"]
+```
+
+<a id="measurement-filtering"></a>
+### Metric Filtering
+
+Metric filtering can be configured per plugin on any input, output, processor,
+and aggregator plugin.  Filters fall under two categories: Selectors and
+Modifiers.
+
+#### Selectors
+
+Selector filters include or exclude entire metrics.  When a metric is excluded
+from a Input or an Output plugin, the metric is dropped.  If a metric is
+excluded from a Processor or Aggregator plugin, it is skips the plugin and is
+sent onwards to the next stage of processing.
+
+- **namepass**:
+An array of glob pattern strings.  Only metrics whose measurement name matches
+a pattern in this list are emitted.
+
+- **namedrop**:
+The inverse of `namepass`.  If a match is found the metric is discarded. This
+is tested on metrics after they have passed the `namepass` test.
+
+- **tagpass**:
+A table mapping tag keys to arrays of glob pattern strings.  Only metrics
+that contain a tag key in the table and a tag value matching one of its
+patterns is emitted.
+
+- **tagdrop**:
+The inverse of `tagpass`.  If a match is found the metric is discarded. This
+is tested on metrics after they have passed the `tagpass` test.
+
+#### Modifiers
+
+Modifier filters remove tags and fields from a metric.  If all fields are
+removed the metric is removed.
+
+- **fieldpass**:
+An array of glob pattern strings.  Only fields whose field key matches a
+pattern in this list are emitted.
+
+- **fielddrop**:
+The inverse of `fieldpass`.  Fields with a field key matching one of the
+patterns will be discarded from the metric.  This is tested on metrics after
+they have passed the `fieldpass` test.
+
+- **taginclude**:
+An array of glob pattern strings.  Only tags with a tag key matching one of
+the patterns are emitted.  In contrast to `tagpass`, which will pass an entire
+metric based on its tag, `taginclude` removes all non matching tags from the
+metric.  Any tag can be filtered including global tags and the agent `host`
+tag.
+
+- **tagexclude**:
+The inverse of `taginclude`. Tags with a tag key matching one of the patterns
+will be discarded from the metric.  Any tag can be filtered including global
+tags and the agent `host` tag.
+
+#### Filtering Examples
+
+##### Using tagpass and tagdrop:
 ```toml
 [[inputs.cpu]]
   percpu = true
@@ -154,10 +474,22 @@ interpreted as part of the tagpass/tagdrop map.
     fstype = [ "ext4", "xfs" ]
     # Globs can also be used on the tag values
     path = [ "/opt", "/home*" ]
+
+[[inputs.win_perf_counters]]
+  [[inputs.win_perf_counters.object]]
+    ObjectName = "Network Interface"
+    Instances = ["*"]
+    Counters = [
+      "Bytes Received/sec",
+      "Bytes Sent/sec"
+    ]
+    Measurement = "win_net"
+  # Don't send metrics where the Windows interface name (instance) begins with isatap or Local
+  [inputs.win_perf_counters.tagdrop]
+    instance = ["isatap*", "Local*"]
 ```
 
-#### Input Config: fieldpass and fielddrop
+##### Using fieldpass and fielddrop:
-
 ```toml
 # Drop all metrics for guest & steal CPU usage
 [[inputs.cpu]]
@@ -170,8 +502,7 @@ interpreted as part of the tagpass/tagdrop map.
   fieldpass = ["inodes*"]
 ```
 
-#### Input Config: namepass and namedrop
+##### Using namepass and namedrop:
-
 ```toml
 # Drop all metrics about containers for kubelet
 [[inputs.prometheus]]
@@ -184,8 +515,7 @@ interpreted as part of the tagpass/tagdrop map.
   namepass = ["rest_client_*"]
 ```
 
-#### Input Config: taginclude and tagexclude
+##### Using taginclude and tagexclude:
-
 ```toml
 # Only include the "cpu" tag in the measurements for the cpu plugin.
 [[inputs.cpu]]
@@ -198,88 +528,65 @@ interpreted as part of the tagpass/tagdrop map.
   tagexclude = ["fstype"]
 ```
 
-#### Input config: prefix, suffix, and override
+##### Metrics can be routed to different outputs using the metric name and tags:
-
-This plugin will emit measurements with the name `cpu_total`
-
-```toml
-[[inputs.cpu]]
-  name_suffix = "_total"
-  percpu = false
-  totalcpu = true
-```
-
-This will emit measurements with the name `foobar`
-
-```toml
-[[inputs.cpu]]
-  name_override = "foobar"
-  percpu = false
-  totalcpu = true
-```
-
-#### Input config: tags
-
-This plugin will emit measurements with two additional tags: `tag1=foo` and
-`tag2=bar`
-
-NOTE: Order matters, the `[inputs.cpu.tags]` table must be at the _end_ of the
-plugin definition.
-
-```toml
-[[inputs.cpu]]
-  percpu = false
-  totalcpu = true
-  [inputs.cpu.tags]
-    tag1 = "foo"
-    tag2 = "bar"
-```
-
-#### Multiple inputs of the same type
-
-Additional inputs (or outputs) of the same type can be specified,
-just define more instances in the config file. It is highly recommended that
-you utilize `name_override`, `name_prefix`, or `name_suffix` config options
-to avoid measurement collisions:
-
-```toml
-[[inputs.cpu]]
-  percpu = false
-  totalcpu = true
-
-[[inputs.cpu]]
-  percpu = true
-  totalcpu = false
-  name_override = "percpu_usage"
-  fielddrop = ["cpu_time*"]
-```
-
-## Output Configuration
-
-Telegraf also supports specifying multiple output sinks to send data to,
-configuring each output sink is different, but examples can be
-found by running `telegraf -sample-config`.
-
 ```toml
 [[outputs.influxdb]]
   urls = [ "http://localhost:8086" ]
   database = "telegraf"
-  precision = "s"
   # Drop all measurements that start with "aerospike"
   namedrop = ["aerospike*"]
 
 [[outputs.influxdb]]
   urls = [ "http://localhost:8086" ]
   database = "telegraf-aerospike-data"
-  precision = "s"
   # Only accept aerospike data:
   namepass = ["aerospike*"]
 
 [[outputs.influxdb]]
   urls = [ "http://localhost:8086" ]
   database = "telegraf-cpu0-data"
-  precision = "s"
   # Only store measurements where the tag "cpu" matches the value "cpu0"
   [outputs.influxdb.tagpass]
     cpu = ["cpu0"]
 ```
+
+##### Routing metrics to different outputs based on the input.
+
+Metrics are tagged with `influxdb_database` in the input, which is then used to
+select the output.  The tag is removed in the outputs before writing.
+
+```toml
+[[outputs.influxdb]]
+  urls = ["http://influxdb.example.com"]
+  database = "db_default"
+  [outputs.influxdb.tagdrop]
+    influxdb_database = ["*"]
+
+[[outputs.influxdb]]
+  urls = ["http://influxdb.example.com"]
+  database = "db_other"
+  tagexclude = ["influxdb_database"]
+  [outputs.influxdb.tagpass]
+    influxdb_database = ["other"]
+
+[[inputs.disk]]
+  [inputs.disk.tags]
+    influxdb_database = "other"
+```
+
+### Transport Layer Security (TLS)
+
+Reference the detailed [TLS][] documentation.
+
+[TOML]: https://github.com/toml-lang/toml#toml
+[global tags]: #global-tags
+[interval]: #intervals
+[agent]: #agent
+[plugins]: #plugins
+[inputs]: #input-plugins
+[outputs]: #output-plugins
+[processors]: #processor-plugins
+[aggregators]: #aggregator-plugins
+[metric filtering]: #metric-filtering
+[telegraf.conf]: /etc/telegraf.conf
+[TLS]: /docs/TLS.md

docs/DATA_FORMATS_INPUT.md

@@ -1,35 +1,24 @@
-# Telegraf Input Data Formats
+# Input Data Formats
 
-Telegraf is able to parse the following input data formats into metrics:
+Telegraf contains many general purpose plugins that support parsing input data
+using a configurable parser into [metrics][].  This allows, for example, the
+`kafka_consumer` input plugin to process messages in either InfluxDB Line
+Protocol or in JSON format.
 
-1. [InfluxDB Line Protocol](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md#influx)
+- [InfluxDB Line Protocol](/plugins/parsers/influx)
-1. [JSON](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md#json)
+- [Collectd](/plugins/parsers/collectd)
-1. [Graphite](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md#graphite)
+- [CSV](/plugins/parsers/csv)
-1. [Value](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md#value), ie: 45 or "booyah"
+- [Dropwizard](/plugins/parsers/dropwizard)
-1. [Nagios](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md#nagios) (exec input only)
+- [Graphite](/plugins/parsers/graphite)
+- [Grok](/plugins/parsers/grok)
+- [JSON](/plugins/parsers/json)
+- [Logfmt](/plugins/parsers/logfmt)
+- [Nagios](/plugins/parsers/nagios)
+- [Value](/plugins/parsers/value), ie: 45 or "booyah"
+- [Wavefront](/plugins/parsers/wavefront)
 
-Telegraf metrics, like InfluxDB
+Any input plugin containing the `data_format` option can use it to select the
-[points](https://docs.influxdata.com/influxdb/v0.10/write_protocols/line/),
+desired parser:
-are a combination of four basic parts:
-
-1. Measurement Name
-1. Tags
-1. Fields
-1. Timestamp
-
-These four parts are easily defined when using InfluxDB line-protocol as a
-data format. But there are other data formats that users may want to use which
-require more advanced configuration to create usable Telegraf metrics.
-
-Plugins such as `exec` and `kafka_consumer` parse textual data. Up until now,
-these plugins were statically configured to parse just a single
-data format. `exec` mostly only supported parsing JSON, and `kafka_consumer` only
-supported data in InfluxDB line-protocol.
-
-But now we are normalizing the parsing of various data formats across all
-plugins that can support it. You will be able to identify a plugin that supports
-different data formats by the presence of a `data_format` config option, for
-example, in the exec plugin:
 
 ```toml
 [[inputs.exec]]
@@ -40,335 +29,10 @@ example, in the exec plugin:
   name_suffix = "_mycollector"
 
   ## Data format to consume.
-  ## Each data format has it's own unique set of configuration options, read
+  ## Each data format has its own unique set of configuration options, read
   ## more about them here:
   ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
   data_format = "json"
-
-  ## Additional configuration options go here
 ```
 
-Each data_format has an additional set of configuration options available, which
+[metrics]: /docs/METRICS.md
-I'll go over below.
-
-# Influx:
-
-There are no additional configuration options for InfluxDB line-protocol. The
-metrics are parsed directly into Telegraf metrics.
-
-#### Influx Configuration:
-
-```toml
-[[inputs.exec]]
-  ## Commands array
-  commands = ["/tmp/test.sh", "/usr/bin/mycollector --foo=bar"]
-
-  ## measurement name suffix (for separating different commands)
-  name_suffix = "_mycollector"
-
-  ## Data format to consume.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
-  data_format = "influx"
-```
-
-# JSON:
-
-The JSON data format flattens JSON into metric _fields_.
-NOTE: Only numerical values are converted to fields, and they are converted
-into a float. strings are ignored unless specified as a tag_key (see below).
-
-So for example, this JSON:
-
-```json
-{
-    "a": 5,
-    "b": {
-        "c": 6
-    },
-    "ignored": "I'm a string"
-}
-```
-
-Would get translated into _fields_ of a measurement:
-
-```
-myjsonmetric a=5,b_c=6
-```
-
-The _measurement_ _name_ is usually the name of the plugin,
-but can be overridden using the `name_override` config option.
-
-#### JSON Configuration:
-
-The JSON data format supports specifying "tag keys". If specified, keys
-will be searched for in the root-level of the JSON blob. If the key(s) exist,
-they will be applied as tags to the Telegraf metrics.
-
-For example, if you had this configuration:
-
-```toml
-[[inputs.exec]]
-  ## Commands array
-  commands = ["/tmp/test.sh", "/usr/bin/mycollector --foo=bar"]
-
-  ## measurement name suffix (for separating different commands)
-  name_suffix = "_mycollector"
-
-  ## Data format to consume.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
-  data_format = "json"
-
-  ## List of tag names to extract from top-level of JSON server response
-  tag_keys = [
-    "my_tag_1",
-    "my_tag_2"
-  ]
-```
-
-with this JSON output from a command:
-
-```json
-{
-    "a": 5,
-    "b": {
-        "c": 6
-    },
-    "my_tag_1": "foo"
-}
-```
-
-Your Telegraf metrics would get tagged with "my_tag_1"
-
-```
-exec_mycollector,my_tag_1=foo a=5,b_c=6
-```
-
-# Value:
-
-The "value" data format translates single values into Telegraf metrics. This
-is done by assigning a measurement name and setting a single field ("value")
-as the parsed metric.
-
-#### Value Configuration:
-
-You **must** tell Telegraf what type of metric to collect by using the
-`data_type` configuration option. Available options are:
-
-1. integer
-2. float or long
-3. string
-4. boolean
-
-**Note:** It is also recommended that you set `name_override` to a measurement
-name that makes sense for your metric, otherwise it will just be set to the
-name of the plugin.
-
-```toml
-[[inputs.exec]]
-  ## Commands array
-  commands = ["cat /proc/sys/kernel/random/entropy_avail"]
-
-  ## override the default metric name of "exec"
-  name_override = "entropy_available"
-
-  ## Data format to consume.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
-  data_format = "value"
-  data_type = "integer" # required
-```
-
-# Graphite:
-
-The Graphite data format translates graphite _dot_ buckets directly into
-telegraf measurement names, with a single value field, and without any tags.
-By default, the separator is left as ".", but this can be changed using the
-"separator" argument. For more advanced options,
-Telegraf supports specifying "templates" to translate
-graphite buckets into Telegraf metrics.
-
-Templates are of the form:
-
-```
-"host.mytag.mytag.measurement.measurement.field*"
-```
-
-Where the following keywords exist:
-
-1. `measurement`: specifies that this section of the graphite bucket corresponds
-to the measurement name. This can be specified multiple times.
-2. `field`: specifies that this section of the graphite bucket corresponds
-to the field name. This can be specified multiple times.
-3. `measurement*`: specifies that all remaining elements of the graphite bucket
-correspond to the measurement name.
-4. `field*`: specifies that all remaining elements of the graphite bucket
-correspond to the field name.
-
-Any part of the template that is not a keyword is treated as a tag key. This
-can also be specified multiple times.
-
-NOTE: `field*` cannot be used in conjunction with `measurement*`!
-
-#### Measurement & Tag Templates:
-
-The most basic template is to specify a single transformation to apply to all
-incoming metrics. So the following template:
-
-```toml
-templates = [
-    "region.region.measurement*"
-]
-```
-
-would result in the following Graphite -> Telegraf transformation.
-
-```
-us.west.cpu.load 100
-=> cpu.load,region=us.west value=100
-```
-
-#### Field Templates:
-
-The field keyword tells Telegraf to give the metric that field name.
-So the following template:
-
-```toml
-separator = "_"
-templates = [
-    "measurement.measurement.field.field.region"
-]
-```
-
-would result in the following Graphite -> Telegraf transformation.
-
-```
-cpu.usage.idle.percent.eu-east 100
-=> cpu_usage,region=eu-east idle_percent=100
-```
-
-The field key can also be derived from all remaining elements of the graphite
-bucket by specifying `field*`:
-
-```toml
-separator = "_"
-templates = [
-    "measurement.measurement.region.field*"
-]
-```
-
-which would result in the following Graphite -> Telegraf transformation.
-
-```
-cpu.usage.eu-east.idle.percentage 100
-=> cpu_usage,region=eu-east idle_percentage=100
-```
-
-#### Filter Templates:
-
-Users can also filter the template(s) to use based on the name of the bucket,
-using glob matching, like so:
-
-```toml
-templates = [
-    "cpu.* measurement.measurement.region",
-    "mem.* measurement.measurement.host"
-]
-```
-
-which would result in the following transformation:
-
-```
-cpu.load.eu-east 100
-=> cpu_load,region=eu-east value=100
-
-mem.cached.localhost 256
-=> mem_cached,host=localhost value=256
-```
-
-#### Adding Tags:
-
-Additional tags can be added to a metric that don't exist on the received metric.
-You can add additional tags by specifying them after the pattern.
-Tags have the same format as the line protocol.
-Multiple tags are separated by commas.
-
-```toml
-templates = [
-    "measurement.measurement.field.region datacenter=1a"
-]
-```
-
-would result in the following Graphite -> Telegraf transformation.
-
-```
-cpu.usage.idle.eu-east 100
-=> cpu_usage,region=eu-east,datacenter=1a idle=100
-```
-
-There are many more options available,
-[More details can be found here](https://github.com/influxdata/influxdb/tree/master/services/graphite#templates)
-
-#### Graphite Configuration:
-
-```toml
-[[inputs.exec]]
-  ## Commands array
-  commands = ["/tmp/test.sh", "/usr/bin/mycollector --foo=bar"]
-
-  ## measurement name suffix (for separating different commands)
-  name_suffix = "_mycollector"
-
-  ## Data format to consume.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
-  data_format = "graphite"
-
-  ## This string will be used to join the matched values.
-  separator = "_"
-
-  ## Each template line requires a template pattern. It can have an optional
-  ## filter before the template and separated by spaces. It can also have optional extra
-  ## tags following the template. Multiple tags should be separated by commas and no spaces
-  ## similar to the line protocol format. There can be only one default template.
-  ## Templates support below format:
-  ## 1. filter + template
-  ## 2. filter + template + extra tag(s)
-  ## 3. filter + template with field key
-  ## 4. default template
-  templates = [
-    "*.app env.service.resource.measurement",
-    "stats.* .host.measurement* region=eu-east,agent=sensu",
-    "stats2.* .host.measurement.field",
-    "measurement*"
-  ]
-```
-
-# Nagios:
-
-There are no additional configuration options for Nagios line-protocol. The
-metrics are parsed directly into Telegraf metrics.
-
-Note: Nagios Input Data Formats is only supported in `exec` input plugin.
-
-#### Nagios Configuration:
-
-```toml
-[[inputs.exec]]
-  ## Commands array
-  commands = ["/usr/lib/nagios/plugins/check_load", "-w 5,6,7 -c 7,8,9"]
-
-  ## measurement name suffix (for separating different commands)
-  name_suffix = "_mycollector"
-
-  ## Data format to consume.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
-  data_format = "nagios"
-```

docs/DATA_FORMATS_OUTPUT.md

@@ -1,34 +1,19 @@
-# Telegraf Output Data Formats
+# Output Data Formats
 
-Telegraf is able to serialize metrics into the following output data formats:
+In addition to output specific data formats, Telegraf supports a set of
+standard data formats that may be selected from when configuring many output
+plugins.
 
-1. [InfluxDB Line Protocol](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md#influx)
+1. [InfluxDB Line Protocol](/plugins/serializers/influx)
-1. [JSON](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md#json)
+1. [Carbon2](/plugins/serializers/carbon2)
-1. [Graphite](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md#graphite)
+1. [Graphite](/plugins/serializers/graphite)
+1. [JSON](/plugins/serializers/json)
+1. [Prometheus](/plugins/serializers/prometheus)
+1. [SplunkMetric](/plugins/serializers/splunkmetric)
+1. [Wavefront](/plugins/serializers/wavefront)
 
-Telegraf metrics, like InfluxDB
+You will be able to identify the plugins with support by the presence of a
-[points](https://docs.influxdata.com/influxdb/v0.10/write_protocols/line/),
+`data_format` config option, for example, in the `file` output plugin:
-are a combination of four basic parts:
-
-1. Measurement Name
-1. Tags
-1. Fields
-1. Timestamp
-
-In InfluxDB line protocol, these 4 parts are easily defined in textual form:
-
-```
-measurement_name[,tag1=val1,...]  field1=val1[,field2=val2,...]  [timestamp]
-```
-
-For Telegraf outputs that write textual data (such as `kafka`, `mqtt`, and `file`),
-InfluxDB line protocol was originally the only available output format. But now
-we are normalizing telegraf metric "serializers" into a
-[plugin-like interface](https://github.com/influxdata/telegraf/tree/master/plugins/serializers)
-across all output plugins that can support it.
-You will be able to identify a plugin that supports different data formats
-by the presence of a `data_format`
-config option, for example, in the `file` output plugin:
 
 ```toml
 [[outputs.file]]
@@ -36,115 +21,8 @@ config option, for example, in the `file` output plugin:
   files = ["stdout"]
 
   ## Data format to output.
-  ## Each data format has it's own unique set of configuration options, read
+  ## Each data format has its own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
-  data_format = "influx"
-
-  ## Additional configuration options go here
-```
-
-Each data_format has an additional set of configuration options available, which
-I'll go over below.
-
-# Influx:
-
-There are no additional configuration options for InfluxDB line-protocol. The
-metrics are serialized directly into InfluxDB line-protocol.
-
-### Influx Configuration:
-
-```toml
-[[outputs.file]]
-  ## Files to write to, "stdout" is a specially handled file.
-  files = ["stdout", "/tmp/metrics.out"]
-
-  ## Data format to output.
-  ## Each data format has it's own unique set of configuration options, read
   ## more about them here:
   ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
   data_format = "influx"
 ```
-
-# Graphite:
-
-The Graphite data format translates Telegraf metrics into _dot_ buckets. A
-template can be specified for the output of Telegraf metrics into Graphite
-buckets. The default template is:
-
-```
-template = "host.tags.measurement.field"
-```
-
-In the above template, we have four parts:
-
-1. _host_ is a tag key. This can be any tag key that is in the Telegraf
-metric(s). If the key doesn't exist, it will be ignored. If it does exist, the
-tag value will be filled in.
-1. _tags_ is a special keyword that outputs all remaining tag values, separated
-by dots and in alphabetical order (by tag key). These will be filled after all
-tag keys are filled.
-1. _measurement_ is a special keyword that outputs the measurement name.
-1. _field_ is a special keyword that outputs the field name.
-
-Which means the following influx metric -> graphite conversion would happen:
-
-```
-cpu,cpu=cpu-total,dc=us-east-1,host=tars usage_idle=98.09,usage_user=0.89 1455320660004257758
-=>
-tars.cpu-total.us-east-1.cpu.usage_user 0.89 1455320690
-tars.cpu-total.us-east-1.cpu.usage_idle 98.09 1455320690
-```
-
-### Graphite Configuration:
-
-```toml
-[[outputs.file]]
-  ## Files to write to, "stdout" is a specially handled file.
-  files = ["stdout", "/tmp/metrics.out"]
-
-  ## Data format to output.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
-  data_format = "graphite"
-
-  # prefix each graphite bucket
-  prefix = "telegraf"
-  # graphite template
-  template = "host.tags.measurement.field"
-```
-
-# JSON:
-
-The JSON data format serialized Telegraf metrics in json format. The format is:
-
-```json
-{
-   "fields":{
-      "field_1":30,
-      "field_2":4,
-      "field_N":59,
-      "n_images":660
-   },
-   "name":"docker",
-   "tags":{
-      "host":"raynor"
-   },
-   "timestamp":1458229140
-}
-```
-
-### JSON Configuration:
-
-```toml
-[[outputs.file]]
-  ## Files to write to, "stdout" is a specially handled file.
-  files = ["stdout", "/tmp/metrics.out"]
-
-  ## Data format to output.
-  ## Each data format has it's own unique set of configuration options, read
-  ## more about them here:
-  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
-  data_format = "json"
-```

docs/FAQ.md

@@ -0,0 +1,76 @@
+# Frequently Asked Questions
+
+### Q: How can I monitor the Docker Engine Host from within a container?
+
+You will need to setup several volume mounts as well as some environment
+variables:
+```
+docker run --name telegraf
+	-v /:/hostfs:ro
+	-v /etc:/hostfs/etc:ro
+	-v /proc:/hostfs/proc:ro
+	-v /sys:/hostfs/sys:ro
+	-v /var:/hostfs/var:ro
+	-v /run:/hostfs/run:ro
+	-e HOST_ETC=/hostfs/etc
+	-e HOST_PROC=/hostfs/proc
+	-e HOST_SYS=/hostfs/sys
+	-e HOST_VAR=/hostfs/var
+	-e HOST_RUN=/hostfs/run
+	-e HOST_MOUNT_PREFIX=/hostfs
+	telegraf
+```
+
+
+### Q: Why do I get a "no such host" error resolving hostnames that other
+programs can resolve?
+
+Go uses a pure Go resolver by default for [name resolution](https://golang.org/pkg/net/#hdr-Name_Resolution).
+This resolver behaves differently than the C library functions but is more
+efficient when used with the Go runtime.
+
+If you encounter problems or want to use more advanced name resolution methods
+that are unsupported by the pure Go resolver, you can switch to the cgo
+resolver.
+
+If running manually set:
+```
+export GODEBUG=netdns=cgo
+```
+
+If running as a service add the environment variable to `/etc/default/telegraf`:
+```
+GODEBUG=netdns=cgo
+```
+
+### Q: How can I manage series cardinality?
+
+High [series cardinality][], when not properly managed, can cause high load on
+your database.  Telegraf attempts to avoid creating series with high
+cardinality, but some monitoring workloads such as tracking containers are are
+inherently high cardinality.  These workloads can still be monitored, but care
+must be taken to manage cardinality growth.
+
+You can use the following techniques to avoid cardinality issues:
+
+- Use [metric filtering][] options to exclude unneeded measurements and tags.
+- Write to a database with an appropriate [retention policy][].
+- Limit series cardinality in your database using the
+  [max-series-per-database][] and [max-values-per-tag][] settings.
+- Consider using the [Time Series Index][tsi].
+- Monitor your databases using the [show cardinality][] commands.
+- Consult the [InfluxDB documentation][influx docs] for the most up-to-date techniques.
+
+[series cardinality]: https://docs.influxdata.com/influxdb/v1.7/concepts/glossary/#series-cardinality
+[metric filtering]: https://github.com/influxdata/telegraf/blob/master/docs/CONFIGURATION.md#metric-filtering
+[retention policy]: https://docs.influxdata.com/influxdb/latest/guides/downsampling_and_retention/
+[max-series-per-database]: https://docs.influxdata.com/influxdb/latest/administration/config/#max-series-per-database-1000000
+[max-values-per-tag]: https://docs.influxdata.com/influxdb/latest/administration/config/#max-values-per-tag-100000
+[tsi]: https://docs.influxdata.com/influxdb/latest/concepts/time-series-index/
+[show cardinality]: https://docs.influxdata.com/influxdb/latest/query_language/spec/#show-cardinality
+[influx docs]: https://docs.influxdata.com/influxdb/latest/
+
+### Q: When will the next version be released?
+
+The latest release date estimate can be viewed on the
+[milestones](https://github.com/influxdata/telegraf/milestones) page.

docs/INPUTS.md

@@ -0,0 +1,149 @@
+### Input Plugins
+
+This section is for developers who want to create new collection inputs.
+Telegraf is entirely plugin driven. This interface allows for operators to
+pick and chose what is gathered and makes it easy for developers
+to create new ways of generating metrics.
+
+Plugin authorship is kept as simple as possible to promote people to develop
+and submit new inputs.
+
+### Input Plugin Guidelines
+
+- A plugin must conform to the [telegraf.Input][] interface.
+- Input Plugins should call `inputs.Add` in their `init` function to register
+  themselves.  See below for a quick example.
+- Input Plugins must be added to the
+  `github.com/influxdata/telegraf/plugins/inputs/all/all.go` file.
+- The `SampleConfig` function should return valid toml that describes how the
+  plugin can be configured. This is included in `telegraf config`.  Please
+  consult the [SampleConfig][] page for the latest style
+  guidelines.
+- The `Description` function should say in one line what this plugin does.
+- Follow the recommended [CodeStyle][].
+
+Let's say you've written a plugin that emits metrics about processes on the
+current host.
+
+### Input Plugin Example
+
+```go
+package simple
+
+// simple.go
+
+import (
+    "github.com/influxdata/telegraf"
+    "github.com/influxdata/telegraf/plugins/inputs"
+)
+
+type Simple struct {
+    Ok bool `toml:"ok"`
+}
+
+func (s *Simple) Description() string {
+    return "a demo plugin"
+}
+
+func (s *Simple) SampleConfig() string {
+    return `
+  ## Indicate if everything is fine
+  ok = true
+`
+}
+
+func (s *Simple) Init() error {
+	return nil
+}
+
+func (s *Simple) Gather(acc telegraf.Accumulator) error {
+    if s.Ok {
+        acc.AddFields("state", map[string]interface{}{"value": "pretty good"}, nil)
+    } else {
+        acc.AddFields("state", map[string]interface{}{"value": "not great"}, nil)
+    }
+
+    return nil
+}
+
+func init() {
+    inputs.Add("simple", func() telegraf.Input { return &Simple{} })
+}
+```
+
+### Development
+
+* Run `make static` followed by `make plugin-[pluginName]` to spin up a docker
+  dev environment using docker-compose.
+* ***[Optional]*** When developing a plugin, add a `dev` directory with a
+  `docker-compose.yml` and `telegraf.conf` as well as any other supporting
+  files, where sensible.
+
+### Typed Metrics
+
+In addition the the `AddFields` function, the accumulator also supports
+functions to add typed metrics: `AddGauge`, `AddCounter`, etc.  Metric types
+are ignored by the InfluxDB output, but can be used for other outputs, such as
+[prometheus][prom metric types].
+
+### Data Formats
+
+Some input plugins, such as the [exec][] plugin, can accept any supported
+[input data formats][].
+
+In order to enable this, you must specify a `SetParser(parser parsers.Parser)`
+function on the plugin object (see the exec plugin for an example), as well as
+defining `parser` as a field of the object.
+
+You can then utilize the parser internally in your plugin, parsing data as you
+see fit. Telegraf's configuration layer will take care of instantiating and
+creating the `Parser` object.
+
+Add the following to the `SampleConfig()`:
+
+```toml
+  ## Data format to consume.
+  ## Each data format has its own unique set of configuration options, read
+  ## more about them here:
+  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
+  data_format = "influx"
+```
+
+### Service Input Plugins
+
+This section is for developers who want to create new "service" collection
+inputs. A service plugin differs from a regular plugin in that it operates a
+background service while Telegraf is running. One example would be the
+`statsd` plugin, which operates a statsd server.
+
+Service Input Plugins are substantially more complicated than a regular
+plugin, as they will require threads and locks to verify data integrity.
+Service Input Plugins should be avoided unless there is no way to create their
+behavior with a regular plugin.
+
+To create a Service Input implement the [telegraf.ServiceInput][] interface.
+
+### Metric Tracking
+
+Metric Tracking provides a system to be notified when metrics have been
+successfully written to their outputs or otherwise discarded.  This allows
+inputs to be created that function as reliable queue consumers.
+
+To get started with metric tracking begin by calling `WithTracking` on the
+[telegraf.Accumulator][].  Add metrics using the `AddTrackingMetricGroup`
+function on the returned [telegraf.TrackingAccumulator][] and store the
+`TrackingID`.  The `Delivered()` channel will return a type with information
+about the final delivery status of the metric group.
+
+Check the [amqp_consumer][] for an example implementation.
+
+[exec]: https://github.com/influxdata/telegraf/tree/master/plugins/inputs/exec
+[amqp_consumer]: https://github.com/influxdata/telegraf/tree/master/plugins/inputs/amqp_consumer
+[prom metric types]: https://prometheus.io/docs/concepts/metric_types/
+[input data formats]: https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
+[SampleConfig]: https://github.com/influxdata/telegraf/wiki/SampleConfig
+[CodeStyle]: https://github.com/influxdata/telegraf/wiki/CodeStyle
+[telegraf.Input]: https://godoc.org/github.com/influxdata/telegraf#Input
+[telegraf.ServiceInput]: https://godoc.org/github.com/influxdata/telegraf#ServiceInput
+[telegraf.Accumulator]: https://godoc.org/github.com/influxdata/telegraf#Accumulator
+[telegraf.TrackingAccumulator]: https://godoc.org/github.com/influxdata/telegraf#Accumulator

docs/LICENSE_OF_DEPENDENCIES.md

@@ -1,33 +1,172 @@
-# List
+# Licenses of dependencies
-- github.com/Shopify/sarama [MIT LICENSE](https://github.com/Shopify/sarama/blob/master/MIT-LICENSE)
-- github.com/Sirupsen/logrus [MIT LICENSE](https://github.com/Sirupsen/logrus/blob/master/LICENSE)
-- github.com/armon/go-metrics [MIT LICENSE](https://github.com/armon/go-metrics/blob/master/LICENSE)
-- github.com/boltdb/bolt [MIT LICENSE](https://github.com/boltdb/bolt/blob/master/LICENSE)
-- github.com/cenkalti/backoff [MIT LICENSE](https://github.com/cenkalti/backoff/blob/master/LICENSE)
-- github.com/dancannon/gorethink [APACHE LICENSE](https://github.com/dancannon/gorethink/blob/master/LICENSE)
-- github.com/eapache/go-resiliency [MIT LICENSE](https://github.com/eapache/go-resiliency/blob/master/LICENSE)
-- github.com/eapache/queue [MIT LICENSE](https://github.com/eapache/queue/blob/master/LICENSE)
-- github.com/fsouza/go-dockerclient [BSD LICENSE](https://github.com/fsouza/go-dockerclient/blob/master/LICENSE)
-- github.com/go-sql-driver/mysql [MPL LICENSE](https://github.com/go-sql-driver/mysql/blob/master/LICENSE)
-- github.com/gogo/protobuf [BSD LICENSE](https://github.com/gogo/protobuf/blob/master/LICENSE)
-- github.com/golang/protobuf [BSD LICENSE](https://github.com/golang/protobuf/blob/master/LICENSE)
-- github.com/golang/snappy [BSD LICENSE](https://github.com/golang/snappy/blob/master/LICENSE)
-- github.com/gonuts/go-shellquote (No License, but the project it was forked from https://github.com/kballard/go-shellquote is [MIT](https://github.com/kballard/go-shellquote/blob/master/LICENSE)).
-- github.com/hashicorp/go-msgpack [BSD LICENSE](https://github.com/hashicorp/go-msgpack/blob/master/LICENSE)
-- github.com/hashicorp/raft [MPL LICENSE](https://github.com/hashicorp/raft/blob/master/LICENSE)
-- github.com/hashicorp/raft-boltdb [MPL LICENSE](https://github.com/hashicorp/raft-boltdb/blob/master/LICENSE)
-- github.com/kardianos/service [ZLIB LICENSE](https://github.com/kardianos/service/blob/master/LICENSE) (License not named but matches word for word with ZLib)
-- github.com/lib/pq [MIT LICENSE](https://github.com/lib/pq/blob/master/LICENSE.md)
-- github.com/matttproud/golang_protobuf_extensions [APACHE LICENSE](https://github.com/matttproud/golang_protobuf_extensions/blob/master/LICENSE)
-- github.com/naoina/go-stringutil [MIT LICENSE](https://github.com/naoina/go-stringutil/blob/master/LICENSE)
-- github.com/naoina/toml [MIT LICENSE](https://github.com/naoina/toml/blob/master/LICENSE)
-- github.com/prometheus/client_golang [APACHE LICENSE](https://github.com/prometheus/client_golang/blob/master/LICENSE)
-- github.com/samuel/go-zookeeper [BSD LICENSE](https://github.com/samuel/go-zookeeper/blob/master/LICENSE)
-- github.com/stretchr/objx [MIT LICENSE](github.com/stretchr/objx)
-- github.com/stretchr/testify [MIT LICENSE](https://github.com/stretchr/testify/blob/master/LICENCE.txt)
-- github.com/wvanbergen/kafka [MIT LICENSE](https://github.com/wvanbergen/kafka/blob/master/LICENSE)
-- github.com/wvanbergen/kazoo-go [MIT LICENSE](https://github.com/wvanbergen/kazoo-go/blob/master/MIT-LICENSE)
-- gopkg.in/dancannon/gorethink.v1 [APACHE LICENSE](https://github.com/dancannon/gorethink/blob/v1.1.2/LICENSE)
-- gopkg.in/mgo.v2 [BSD LICENSE](https://github.com/go-mgo/mgo/blob/v2/LICENSE)
-- golang.org/x/crypto/ [BSD LICENSE](https://github.com/golang/crypto/blob/master/LICENSE)
 
+When distributed in a binary form, Telegraf may contain portions of the
+following works:
+
+- cloud.google.com/go [Apache License 2.0](https://github.com/googleapis/google-cloud-go/blob/master/LICENSE)
+- code.cloudfoundry.org/clock [Apache License 2.0](https://github.com/cloudfoundry/clock/blob/master/LICENSE)
+- collectd.org [MIT License](https://git.octo.it/?p=collectd.git;a=blob;f=COPYING;hb=HEAD)
+- github.com/Azure/azure-amqp-common-go [MIT License](https://github.com/Azure/azure-amqp-common-go/blob/master/LICENSE)
+- github.com/Azure/azure-event-hubs-go [MIT License](https://github.com/Azure/azure-event-hubs-go/blob/master/LICENSE)
+- github.com/Azure/azure-pipeline-go [MIT License](https://github.com/Azure/azure-pipeline-go/blob/master/LICENSE)
+- github.com/Azure/azure-sdk-for-go [Apache License 2.0](https://github.com/Azure/azure-sdk-for-go/blob/master/LICENSE)
+- github.com/Azure/azure-storage-queue-go [MIT License](https://github.com/Azure/azure-storage-queue-go/blob/master/LICENSE)
+- github.com/Azure/go-amqp [MIT License](https://github.com/Azure/go-amqp/blob/master/LICENSE)
+- github.com/Azure/go-autorest [Apache License 2.0](https://github.com/Azure/go-autorest/blob/master/LICENSE)
+- github.com/Mellanox/rdmamap [Apache License 2.0](https://github.com/Mellanox/rdmamap/blob/master/LICENSE)
+- github.com/Microsoft/ApplicationInsights-Go [MIT License](https://github.com/Microsoft/ApplicationInsights-Go/blob/master/LICENSE)
+- github.com/Microsoft/go-winio [MIT License](https://github.com/Microsoft/go-winio/blob/master/LICENSE)
+- github.com/Shopify/sarama [MIT License](https://github.com/Shopify/sarama/blob/master/LICENSE)
+- github.com/StackExchange/wmi [MIT License](https://github.com/StackExchange/wmi/blob/master/LICENSE)
+- github.com/aerospike/aerospike-client-go [Apache License 2.0](https://github.com/aerospike/aerospike-client-go/blob/master/LICENSE)
+- github.com/alecthomas/units [MIT License](https://github.com/alecthomas/units/blob/master/COPYING)
+- github.com/amir/raidman [The Unlicense](https://github.com/amir/raidman/blob/master/UNLICENSE)
+- github.com/apache/thrift [Apache License 2.0](https://github.com/apache/thrift/blob/master/LICENSE)
+- github.com/aristanetworks/glog [Apache License 2.0](https://github.com/aristanetworks/glog/blob/master/LICENSE)
+- github.com/aristanetworks/goarista [Apache License 2.0](https://github.com/aristanetworks/goarista/blob/master/COPYING)
+- github.com/aws/aws-sdk-go [Apache License 2.0](https://github.com/aws/aws-sdk-go/blob/master/LICENSE.txt)
+- github.com/benbjohnson/clock [MIT License](https://github.com/benbjohnson/clock/blob/master/LICENSE)
+- github.com/beorn7/perks [MIT License](https://github.com/beorn7/perks/blob/master/LICENSE)
+- github.com/caio/go-tdigest [MIT License](https://github.com/caio/go-tdigest/blob/master/LICENSE)
+- github.com/cenkalti/backoff [MIT License](https://github.com/cenkalti/backoff/blob/master/LICENSE)
+- github.com/cespare/xxhash [MIT License](https://github.com/cespare/xxhash/blob/master/LICENSE.txt)
+- github.com/cisco-ie/nx-telemetry-proto [Apache License 2.0](https://github.com/cisco-ie/nx-telemetry-proto/blob/master/LICENSE)
+- github.com/couchbase/go-couchbase [MIT License](https://github.com/couchbase/go-couchbase/blob/master/LICENSE)
+- github.com/couchbase/gomemcached [MIT License](https://github.com/couchbase/gomemcached/blob/master/LICENSE)
+- github.com/couchbase/goutils [COUCHBASE INC. COMMUNITY EDITION LICENSE](https://github.com/couchbase/goutils/blob/master/LICENSE.md)
+- github.com/davecgh/go-spew [ISC License](https://github.com/davecgh/go-spew/blob/master/LICENSE)
+- github.com/denisenkom/go-mssqldb [BSD 3-Clause "New" or "Revised" License](https://github.com/denisenkom/go-mssqldb/blob/master/LICENSE.txt)
+- github.com/devigned/tab [MIT License](https://github.com/devigned/tab/blob/master/LICENSE)
+- github.com/dgrijalva/jwt-go [MIT License](https://github.com/dgrijalva/jwt-go/blob/master/LICENSE)
+- github.com/dimchansky/utfbom [Apache License 2.0](https://github.com/dimchansky/utfbom/blob/master/LICENSE)
+- github.com/docker/distribution [Apache License 2.0](https://github.com/docker/distribution/blob/master/LICENSE)
+- github.com/docker/docker [Apache License 2.0](https://github.com/docker/docker/blob/master/LICENSE)
+- github.com/docker/go-connections [Apache License 2.0](https://github.com/docker/go-connections/blob/master/LICENSE)
+- github.com/docker/go-units [Apache License 2.0](https://github.com/docker/go-units/blob/master/LICENSE)
+- github.com/docker/libnetwork [Apache License 2.0](https://github.com/docker/libnetwork/blob/master/LICENSE)
+- github.com/eapache/go-resiliency [MIT License](https://github.com/eapache/go-resiliency/blob/master/LICENSE)
+- github.com/eapache/go-xerial-snappy [MIT License](https://github.com/eapache/go-xerial-snappy/blob/master/LICENSE)
+- github.com/eapache/queue [MIT License](https://github.com/eapache/queue/blob/master/LICENSE)
+- github.com/eclipse/paho.mqtt.golang [Eclipse Public License - v 1.0](https://github.com/eclipse/paho.mqtt.golang/blob/master/LICENSE)
+- github.com/ericchiang/k8s [Apache License 2.0](https://github.com/ericchiang/k8s/blob/master/LICENSE)
+- github.com/ghodss/yaml [MIT License](https://github.com/ghodss/yaml/blob/master/LICENSE)
+- github.com/glinton/ping [MIT License](https://github.com/glinton/ping/blob/master/LICENSE)
+- github.com/go-logfmt/logfmt [MIT License](https://github.com/go-logfmt/logfmt/blob/master/LICENSE)
+- github.com/go-ole/go-ole [MIT License](https://github.com/go-ole/go-ole/blob/master/LICENSE)
+- github.com/go-redis/redis [BSD 2-Clause "Simplified" License](https://github.com/go-redis/redis/blob/master/LICENSE)
+- github.com/go-sql-driver/mysql [Mozilla Public License 2.0](https://github.com/go-sql-driver/mysql/blob/master/LICENSE)
+- github.com/goburrow/modbus [BSD 3-Clause "New" or "Revised" License](https://github.com/goburrow/modbus/blob/master/LICENSE)
+- github.com/goburrow/serial [MIT License](https://github.com/goburrow/serial/LICENSE)
+- github.com/gobwas/glob [MIT License](https://github.com/gobwas/glob/blob/master/LICENSE)
+- github.com/gofrs/uuid [MIT License](https://github.com/gofrs/uuid/blob/master/LICENSE)
+- github.com/gogo/protobuf [BSD 3-Clause Clear License](https://github.com/gogo/protobuf/blob/master/LICENSE)
+- github.com/golang/geo [Apache License 2.0](https://github.com/golang/geo/blob/master/LICENSE)
+- github.com/golang/groupcache [Apache License 2.0](https://github.com/golang/groupcache/blob/master/LICENSE)
+- github.com/golang/mock [Apache License 2.0](https://github.com/golang/mock/blob/master/LICENSE)
+- github.com/golang/protobuf [BSD 3-Clause "New" or "Revised" License](https://github.com/golang/protobuf/blob/master/LICENSE)
+- github.com/golang/snappy [BSD 3-Clause "New" or "Revised" License](https://github.com/golang/snappy/blob/master/LICENSE)
+- github.com/google/go-cmp [BSD 3-Clause "New" or "Revised" License](https://github.com/google/go-cmp/blob/master/LICENSE)
+- github.com/google/go-github [BSD 3-Clause "New" or "Revised" License](https://github.com/google/go-github/blob/master/LICENSE)
+- github.com/google/go-querystring [BSD 3-Clause "New" or "Revised" License](https://github.com/google/go-querystring/blob/master/LICENSE)
+- github.com/googleapis/gax-go [BSD 3-Clause "New" or "Revised" License](https://github.com/googleapis/gax-go/blob/master/LICENSE)
+- github.com/gorilla/mux [BSD 3-Clause "New" or "Revised" License](https://github.com/gorilla/mux/blob/master/LICENSE)
+- github.com/hailocab/go-hostpool [MIT License](https://github.com/hailocab/go-hostpool/blob/master/LICENSE)
+- github.com/harlow/kinesis-consumer [MIT License](https://github.com/harlow/kinesis-consumer/blob/master/MIT-LICENSE)
+- github.com/hashicorp/consul [Mozilla Public License 2.0](https://github.com/hashicorp/consul/blob/master/LICENSE)
+- github.com/hashicorp/go-cleanhttp [Mozilla Public License 2.0](https://github.com/hashicorp/go-cleanhttp/blob/master/LICENSE)
+- github.com/hashicorp/go-rootcerts [Mozilla Public License 2.0](https://github.com/hashicorp/go-rootcerts/blob/master/LICENSE)
+- github.com/hashicorp/go-uuid [Mozilla Public License 2.0](https://github.com/hashicorp/go-uuid/LICENSE)
+- github.com/hashicorp/serf [Mozilla Public License 2.0](https://github.com/hashicorp/serf/blob/master/LICENSE)
+- github.com/influxdata/go-syslog [MIT License](https://github.com/influxdata/go-syslog/blob/develop/LICENSE)
+- github.com/influxdata/tail [MIT License](https://github.com/influxdata/tail/blob/master/LICENSE.txt)
+- github.com/influxdata/toml [MIT License](https://github.com/influxdata/toml/blob/master/LICENSE)
+- github.com/influxdata/wlog [MIT License](https://github.com/influxdata/wlog/blob/master/LICENSE)
+- github.com/jackc/pgx [MIT License](https://github.com/jackc/pgx/blob/master/LICENSE)
+- github.com/jcmturner/gofork [BSD 3-Clause "New" or "Revised" License](https://github.com/jcmturner/gofork/blob/master/LICENSE)
+- github.com/jmespath/go-jmespath [Apache License 2.0](https://github.com/jmespath/go-jmespath/blob/master/LICENSE)
+- github.com/jpillora/backoff [MIT License](https://github.com/jpillora/backoff/blob/master/LICENSE)
+- github.com/kardianos/service [zlib License](https://github.com/kardianos/service/blob/master/LICENSE)
+- github.com/karrick/godirwalk [BSD 2-Clause "Simplified" License](https://github.com/karrick/godirwalk/blob/master/LICENSE)
+- github.com/kballard/go-shellquote [MIT License](https://github.com/kballard/go-shellquote/blob/master/LICENSE)
+- github.com/klauspost/compress [BSD 3-Clause Clear License](https://github.com/klauspost/compress/blob/master/LICENSE)
+- github.com/konsorten/go-windows-terminal-sequences [MIT License](https://github.com/konsorten/go-windows-terminal-sequences/blob/master/LICENSE)
+- github.com/kubernetes/apimachinery [Apache License 2.0](https://github.com/kubernetes/apimachinery/blob/master/LICENSE)
+- github.com/leodido/ragel-machinery [MIT License](https://github.com/leodido/ragel-machinery/blob/develop/LICENSE)
+- github.com/mailru/easyjson [MIT License](https://github.com/mailru/easyjson/blob/master/LICENSE)
+- github.com/matttproud/golang_protobuf_extensions [Apache License 2.0](https://github.com/matttproud/golang_protobuf_extensions/blob/master/LICENSE)
+- github.com/mdlayher/apcupsd [MIT License](https://github.com/mdlayher/apcupsd/blob/master/LICENSE.md)
+- github.com/mdlayher/genetlink [MIT License](https://github.com/mdlayher/genetlink/blob/master/LICENSE.md)
+- github.com/mdlayher/netlink [MIT License](https://github.com/mdlayher/netlink/blob/master/LICENSE.md)
+- github.com/miekg/dns [BSD 3-Clause Clear License](https://github.com/miekg/dns/blob/master/LICENSE)
+- github.com/mitchellh/go-homedir [MIT License](https://github.com/mitchellh/go-homedir/blob/master/LICENSE)
+- github.com/mitchellh/mapstructure [MIT License](https://github.com/mitchellh/mapstructure/blob/master/LICENSE)
+- github.com/multiplay/go-ts3 [BSD 2-Clause "Simplified" License](https://github.com/multiplay/go-ts3/blob/master/LICENSE)
+- github.com/naoina/go-stringutil [MIT License](https://github.com/naoina/go-stringutil/blob/master/LICENSE)
+- github.com/nats-io/jwt [Apache License 2.0](https://github.com/nats-io/jwt/blob/master/LICENSE)
+- github.com/nats-io/nats-server [Apache License 2.0](https://github.com/nats-io/nats-server/blob/master/LICENSE)
+- github.com/nats-io/nats.go [Apache License 2.0](https://github.com/nats-io/nats.go/blob/master/LICENSE)
+- github.com/nats-io/nkeys [Apache License 2.0](https://github.com/nats-io/nkeys/blob/master/LICENSE)
+- github.com/nats-io/nuid [Apache License 2.0](https://github.com/nats-io/nuid/blob/master/LICENSE)
+- github.com/newrelic/newrelic-telemetry-sdk-go [Apache License 2.0](https://github.com/newrelic/newrelic-telemetry-sdk-go/blob/master/LICENSE.md)
+- github.com/nsqio/go-nsq [MIT License](https://github.com/nsqio/go-nsq/blob/master/LICENSE)
+- github.com/openconfig/gnmi [Apache License 2.0](https://github.com/openconfig/gnmi/blob/master/LICENSE)
+- github.com/opencontainers/go-digest [Apache License 2.0](https://github.com/opencontainers/go-digest/blob/master/LICENSE)
+- github.com/opencontainers/image-spec [Apache License 2.0](https://github.com/opencontainers/image-spec/blob/master/LICENSE)
+- github.com/openzipkin/zipkin-go-opentracing [MIT License](https://github.com/openzipkin/zipkin-go-opentracing/blob/master/LICENSE)
+- github.com/pierrec/lz4 [BSD 3-Clause "New" or "Revised" License](https://github.com/pierrec/lz4/blob/master/LICENSE)
+- github.com/pkg/errors [BSD 2-Clause "Simplified" License](https://github.com/pkg/errors/blob/master/LICENSE)
+- github.com/pmezard/go-difflib [BSD 3-Clause Clear License](https://github.com/pmezard/go-difflib/blob/master/LICENSE)
+- github.com/prometheus/client_golang [Apache License 2.0](https://github.com/prometheus/client_golang/blob/master/LICENSE)
+- github.com/prometheus/client_model [Apache License 2.0](https://github.com/prometheus/client_model/blob/master/LICENSE)
+- github.com/prometheus/common [Apache License 2.0](https://github.com/prometheus/common/blob/master/LICENSE)
+- github.com/prometheus/procfs [Apache License 2.0](https://github.com/prometheus/procfs/blob/master/LICENSE)
+- github.com/rcrowley/go-metrics [MIT License](https://github.com/rcrowley/go-metrics/blob/master/LICENSE)
+- github.com/safchain/ethtool [Apache License 2.0](https://github.com/safchain/ethtool/blob/master/LICENSE)
+- github.com/samuel/go-zookeeper [BSD 3-Clause Clear License](https://github.com/samuel/go-zookeeper/blob/master/LICENSE)
+- github.com/shirou/gopsutil [BSD 3-Clause Clear License](https://github.com/shirou/gopsutil/blob/master/LICENSE)
+- github.com/sirupsen/logrus [MIT License](https://github.com/sirupsen/logrus/blob/master/LICENSE)
+- github.com/soniah/gosnmp [BSD 2-Clause "Simplified" License](https://github.com/soniah/gosnmp/blob/master/LICENSE)
+- github.com/streadway/amqp [BSD 2-Clause "Simplified" License](https://github.com/streadway/amqp/blob/master/LICENSE)
+- github.com/stretchr/objx [MIT License](https://github.com/stretchr/objx/blob/master/LICENSE)
+- github.com/stretchr/testify [custom -- permissive](https://github.com/stretchr/testify/blob/master/LICENSE)
+- github.com/tidwall/gjson [MIT License](https://github.com/tidwall/gjson/blob/master/LICENSE)
+- github.com/tidwall/match [MIT License](https://github.com/tidwall/match/blob/master/LICENSE)
+- github.com/tidwall/pretty [MIT License](https://github.com/tidwall/pretty/blob/master/LICENSE)
+- github.com/vishvananda/netlink [Apache License 2.0](https://github.com/vishvananda/netlink/blob/master/LICENSE)
+- github.com/vishvananda/netns [Apache License 2.0](https://github.com/vishvananda/netns/blob/master/LICENSE)
+- github.com/vjeantet/grok [Apache License 2.0](https://github.com/vjeantet/grok/blob/master/LICENSE)
+- github.com/vmware/govmomi [Apache License 2.0](https://github.com/vmware/govmomi/blob/master/LICENSE.txt)
+- github.com/wavefronthq/wavefront-sdk-go [Apache License 2.0](https://github.com/wavefrontHQ/wavefront-sdk-go/blob/master/LICENSE)
+- github.com/wvanbergen/kafka [MIT License](https://github.com/wvanbergen/kafka/blob/master/LICENSE)
+- github.com/wvanbergen/kazoo-go [MIT License](https://github.com/wvanbergen/kazoo-go/blob/master/MIT-LICENSE)
+- github.com/yuin/gopher-lua [MIT License](https://github.com/yuin/gopher-lua/blob/master/LICENSE)
+- go.opencensus.io [Apache License 2.0](https://github.com/census-instrumentation/opencensus-go/blob/master/LICENSE)
+- golang.org/x/crypto [BSD 3-Clause Clear License](https://github.com/golang/crypto/blob/master/LICENSE)
+- golang.org/x/net [BSD 3-Clause Clear License](https://github.com/golang/net/blob/master/LICENSE)
+- golang.org/x/oauth2 [BSD 3-Clause "New" or "Revised" License](https://github.com/golang/oauth2/blob/master/LICENSE)
+- golang.org/x/sync [BSD 3-Clause "New" or "Revised" License](https://github.com/golang/sync/blob/master/LICENSE)
+- golang.org/x/sys [BSD 3-Clause Clear License](https://github.com/golang/sys/blob/master/LICENSE)
+- golang.org/x/text [BSD 3-Clause Clear License](https://github.com/golang/text/blob/master/LICENSE)
+- golang.org/x/time [BSD 3-Clause Clear License](https://github.com/golang/time/blob/master/LICENSE)
+- golang.zx2c4.com/wireguard [MIT License](https://github.com/WireGuard/wgctrl-go/blob/master/LICENSE.md)
+- golang.zx2c4.com/wireguard/wgctrl [MIT License](https://github.com/WireGuard/wgctrl-go/blob/master/LICENSE.md)
+- google.golang.org/api [BSD 3-Clause "New" or "Revised" License](https://github.com/googleapis/google-api-go-client/blob/master/LICENSE)
+- google.golang.org/genproto [Apache License 2.0](https://github.com/google/go-genproto/blob/master/LICENSE)
+- google.golang.org/grpc [Apache License 2.0](https://github.com/grpc/grpc-go/blob/master/LICENSE)
+- gopkg.in/asn1-ber.v1 [MIT License](https://github.com/go-asn1-ber/asn1-ber/blob/v1.3/LICENSE)
+- gopkg.in/fatih/pool.v2 [MIT License](https://github.com/fatih/pool/blob/v2.0.0/LICENSE)
+- gopkg.in/fsnotify.v1 [BSD 3-Clause "New" or "Revised" License](https://github.com/fsnotify/fsnotify/blob/v1.4.7/LICENSE)
+- gopkg.in/gorethink/gorethink.v3 [Apache License 2.0](https://github.com/rethinkdb/rethinkdb-go/blob/v3.0.5/LICENSE)
+- gopkg.in/inf.v0 [BSD 3-Clause "New" or "Revised" License](https://github.com/go-inf/inf/blob/v0.9.1/LICENSE)
+- gopkg.in/jcmturner/aescts.v1 [Apache License 2.0](https://github.com/jcmturner/aescts/blob/v1.0.1/LICENSE)
+- gopkg.in/jcmturner/dnsutils.v1 [Apache License 2.0](https://github.com/jcmturner/dnsutils/blob/v1.0.1/LICENSE)
+- gopkg.in/jcmturner/gokrb5.v7 [Apache License 2.0](https://github.com/jcmturner/gokrb5/tree/v7.5.0/LICENSE)
+- gopkg.in/jcmturner/rpc.v1 [Apache License 2.0](https://github.com/jcmturner/rpc/blob/v1.1.0/LICENSE)
+- gopkg.in/ldap.v3 [MIT License](https://github.com/go-ldap/ldap/blob/v3.1.7/LICENSE)
+- gopkg.in/mgo.v2 [BSD 2-Clause "Simplified" License](https://github.com/go-mgo/mgo/blob/v2/LICENSE)
+- gopkg.in/olivere/elastic.v5 [MIT License](https://github.com/olivere/elastic/blob/v5.0.76/LICENSE)
+- gopkg.in/tomb.v1 [BSD 3-Clause Clear License](https://github.com/go-tomb/tomb/blob/v1/LICENSE)
+- gopkg.in/yaml.v2 [Apache License 2.0](https://github.com/go-yaml/yaml/blob/v2.2.2/LICENSE)
+
+## telegraf used and modified code from these projects
+- github.com/DataDog/datadog-agent [Apache License 2.0](https://github.com/DataDog/datadog-agent/LICENSE)

docs/METRICS.md

@@ -0,0 +1,22 @@
+# Metrics
+
+Telegraf metrics are the internal representation used to model data during
+processing.  Metrics are closely based on InfluxDB's data model and contain
+four main components:
+
+- **Measurement Name**: Description and namespace for the metric.
+- **Tags**: Key/Value string pairs and usually used to identify the
+  metric.
+- **Fields**: Key/Value pairs that are typed and usually contain the
+  metric data.
+- **Timestamp**: Date and time associated with the fields.
+
+This metric type exists only in memory and must be converted to a concrete
+representation in order to be transmitted or viewed.  To achieve this we
+provide several [output data formats][] sometimes referred to as
+*serializers*.  Our default serializer converts to [InfluxDB Line
+Protocol][line protocol] which provides a high performance and one-to-one
+direct mapping from Telegraf metrics.
+
+[output data formats]: /docs/DATA_FORMATS_OUTPUT.md
+[line protocol]: /plugins/serializers/influx

docs/OUTPUTS.md

@@ -0,0 +1,114 @@
+### Output Plugins
+
+This section is for developers who want to create a new output sink. Outputs
+are created in a similar manner as collection plugins, and their interface has
+similar constructs.
+
+### Output Plugin Guidelines
+
+- An output must conform to the [telegraf.Output][] interface.
+- Outputs should call `outputs.Add` in their `init` function to register
+  themselves.  See below for a quick example.
+- To be available within Telegraf itself, plugins must add themselves to the
+  `github.com/influxdata/telegraf/plugins/outputs/all/all.go` file.
+- The `SampleConfig` function should return valid toml that describes how the
+  plugin can be configured. This is included in `telegraf config`.  Please
+  consult the [SampleConfig][] page for the latest style guidelines.
+- The `Description` function should say in one line what this output does.
+- Follow the recommended [CodeStyle][].
+
+### Output Plugin Example
+
+```go
+package simpleoutput
+
+// simpleoutput.go
+
+import (
+    "github.com/influxdata/telegraf"
+    "github.com/influxdata/telegraf/plugins/outputs"
+)
+
+type Simple struct {
+    Ok bool `toml:"ok"`
+}
+
+func (s *Simple) Description() string {
+    return "a demo output"
+}
+
+func (s *Simple) SampleConfig() string {
+    return `
+  ok = true
+`
+}
+
+func (s *Simple) Init() error {
+	return nil
+}
+
+func (s *Simple) Connect() error {
+    // Make a connection to the URL here
+    return nil
+}
+
+func (s *Simple) Close() error {
+    // Close connection to the URL here
+    return nil
+}
+
+func (s *Simple) Write(metrics []telegraf.Metric) error {
+    for _, metric := range metrics {
+        // write `metric` to the output sink here
+    }
+    return nil
+}
+
+func init() {
+    outputs.Add("simpleoutput", func() telegraf.Output { return &Simple{} })
+}
+
+```
+
+## Data Formats
+
+Some output plugins, such as the [file][] plugin, can write in any supported
+[output data formats][].
+
+In order to enable this, you must specify a
+`SetSerializer(serializer serializers.Serializer)`
+function on the plugin object (see the file plugin for an example), as well as
+defining `serializer` as a field of the object.
+
+You can then utilize the serializer internally in your plugin, serializing data
+before it's written. Telegraf's configuration layer will take care of
+instantiating and creating the `Serializer` object.
+
+You should also add the following to your `SampleConfig()`:
+
+```toml
+  ## Data format to output.
+  ## Each data format has its own unique set of configuration options, read
+  ## more about them here:
+  ## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
+  data_format = "influx"
+```
+
+## Flushing Metrics to Outputs
+
+Metrics are flushed to outputs when any of the following events happen:
+- `flush_interval + rand(flush_jitter)` has elapsed since start or the last flush interval
+- At least `metric_batch_size` count of metrics are waiting in the buffer
+- The telegraf process has received a SIGUSR1 signal
+
+Note that if the flush takes longer than the `agent.interval` to write the metrics
+to the output, you'll see a message saying the output `did not complete within its 
+flush interval`. This may mean your output is not keeping up with the flow of metrics, 
+and you may want to look into enabling compression, reducing the size of your metrics, 
+or investigate other reasons why the writes might be taking longer than expected.
+
+[file]: https://github.com/influxdata/telegraf/tree/master/plugins/inputs/file
+[output data formats]: https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
+[SampleConfig]: https://github.com/influxdata/telegraf/wiki/SampleConfig
+[CodeStyle]: https://github.com/influxdata/telegraf/wiki/CodeStyle
+[telegraf.Output]: https://godoc.org/github.com/influxdata/telegraf#Output

docs/PROCESSORS.md

@@ -0,0 +1,69 @@
+### Processor Plugins
+
+This section is for developers who want to create a new processor plugin.
+
+### Processor Plugin Guidelines
+
+* A processor must conform to the [telegraf.Processor][] interface.
+* Processors should call `processors.Add` in their `init` function to register
+  themselves.  See below for a quick example.
+* To be available within Telegraf itself, plugins must add themselves to the
+  `github.com/influxdata/telegraf/plugins/processors/all/all.go` file.
+* The `SampleConfig` function should return valid toml that describes how the
+  processor can be configured. This is include in the output of `telegraf
+  config`.
+- The `SampleConfig` function should return valid toml that describes how the
+  plugin can be configured. This is included in `telegraf config`.  Please
+  consult the [SampleConfig][] page for the latest style guidelines.
+* The `Description` function should say in one line what this processor does.
+- Follow the recommended [CodeStyle][].
+
+### Processor Plugin Example
+
+```go
+package printer
+
+// printer.go
+
+import (
+	"fmt"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/processors"
+)
+
+type Printer struct {
+}
+
+var sampleConfig = `
+`
+
+func (p *Printer) SampleConfig() string {
+	return sampleConfig
+}
+
+func (p *Printer) Description() string {
+	return "Print all metrics that pass through this filter."
+}
+
+func (p *Printer) Init() error {
+	return nil
+}
+
+func (p *Printer) Apply(in ...telegraf.Metric) []telegraf.Metric {
+	for _, metric := range in {
+		fmt.Println(metric.String())
+	}
+	return in
+}
+
+func init() {
+	processors.Add("printer", func() telegraf.Processor {
+		return &Printer{}
+	})
+}
+```
+
+[SampleConfig]: https://github.com/influxdata/telegraf/wiki/SampleConfig
+[CodeStyle]: https://github.com/influxdata/telegraf/wiki/CodeStyle
+[telegraf.Processor]: https://godoc.org/github.com/influxdata/telegraf#Processor

docs/PROFILING.md

@@ -0,0 +1,24 @@
+# Telegraf profiling
+
+Telegraf uses the standard package `net/http/pprof`. This package serves via its HTTP server runtime profiling data in the format expected by the pprof visualization tool.
+
+By default, the profiling is turned off.
+
+To enable profiling you need to specify address to config parameter `pprof-addr`, for example:
+
+```
+telegraf --config telegraf.conf --pprof-addr localhost:6060
+```
+
+There are several paths to get different profiling information:
+
+To look at the heap profile:
+
+`go tool pprof http://localhost:6060/debug/pprof/heap`
+
+or to look at a 30-second CPU profile:
+
+`go tool pprof http://localhost:6060/debug/pprof/profile?seconds=30`
+
+To view all available profiles, open `http://localhost:6060/debug/pprof/` in your browser.
+

docs/README.md

@@ -0,0 +1,21 @@
+# Telegraf
+
+- Concepts
+  - [Metrics][metrics]
+  - [Input Data Formats][parsers]
+  - [Output Data Formats][serializers]
+  - [Aggregators & Processors][aggproc]
+- Administration
+  - [Configuration][conf]
+  - [Profiling][profiling]
+  - [Windows Service][winsvc]
+  - [FAQ][faq]
+
+[conf]: /docs/CONFIGURATION.md
+[metrics]: /docs/METRICS.md
+[parsers]: /docs/DATA_FORMATS_INPUT.md
+[serializers]: /docs/DATA_FORMATS_OUTPUT.md
+[aggproc]: /docs/AGGREGATORS_AND_PROCESSORS.md
+[profiling]: /docs/PROFILING.md
+[winsvc]: /docs/WINDOWS_SERVICE.md
+[faq]: /docs/FAQ.md

docs/TEMPLATE_PATTERN.md

@@ -0,0 +1,135 @@
+# Template Patterns
+
+Template patterns are a mini language that describes how a dot delimited
+string should be mapped to and from [metrics][].
+
+A template has the form:
+```
+"host.mytag.mytag.measurement.measurement.field*"
+```
+
+Where the following keywords can be set:
+
+1. `measurement`: specifies that this section of the graphite bucket corresponds
+to the measurement name. This can be specified multiple times.
+2. `field`: specifies that this section of the graphite bucket corresponds
+to the field name. This can be specified multiple times.
+3. `measurement*`: specifies that all remaining elements of the graphite bucket
+correspond to the measurement name.
+4. `field*`: specifies that all remaining elements of the graphite bucket
+correspond to the field name.
+
+Any part of the template that is not a keyword is treated as a tag key. This
+can also be specified multiple times.
+
+**NOTE:** `field*` cannot be used in conjunction with `measurement*`.
+
+### Examples
+
+#### Measurement & Tag Templates
+
+The most basic template is to specify a single transformation to apply to all
+incoming metrics. So the following template:
+
+```toml
+templates = [
+    "region.region.measurement*"
+]
+```
+
+would result in the following Graphite -> Telegraf transformation.
+
+```
+us.west.cpu.load 100
+=> cpu.load,region=us.west value=100
+```
+
+Multiple templates can also be specified, but these should be differentiated
+using _filters_ (see below for more details)
+
+```toml
+templates = [
+    "*.*.* region.region.measurement", # <- all 3-part measurements will match this one.
+    "*.*.*.* region.region.host.measurement", # <- all 4-part measurements will match this one.
+]
+```
+
+#### Field Templates
+
+The field keyword tells Telegraf to give the metric that field name.
+So the following template:
+
+```toml
+separator = "_"
+templates = [
+    "measurement.measurement.field.field.region"
+]
+```
+
+would result in the following Graphite -> Telegraf transformation.
+
+```
+cpu.usage.idle.percent.eu-east 100
+=> cpu_usage,region=eu-east idle_percent=100
+```
+
+The field key can also be derived from all remaining elements of the graphite
+bucket by specifying `field*`:
+
+```toml
+separator = "_"
+templates = [
+    "measurement.measurement.region.field*"
+]
+```
+
+which would result in the following Graphite -> Telegraf transformation.
+
+```
+cpu.usage.eu-east.idle.percentage 100
+=> cpu_usage,region=eu-east idle_percentage=100
+```
+
+#### Filter Templates
+
+Users can also filter the template(s) to use based on the name of the bucket,
+using glob matching, like so:
+
+```toml
+templates = [
+    "cpu.* measurement.measurement.region",
+    "mem.* measurement.measurement.host"
+]
+```
+
+which would result in the following transformation:
+
+```
+cpu.load.eu-east 100
+=> cpu_load,region=eu-east value=100
+
+mem.cached.localhost 256
+=> mem_cached,host=localhost value=256
+```
+
+#### Adding Tags
+
+Additional tags can be added to a metric that don't exist on the received metric.
+You can add additional tags by specifying them after the pattern.
+Tags have the same format as the line protocol.
+Multiple tags are separated by commas.
+
+```toml
+templates = [
+    "measurement.measurement.field.region datacenter=1a"
+]
+```
+
+would result in the following Graphite -> Telegraf transformation.
+
+```
+cpu.usage.idle.eu-east 100
+=> cpu_usage,region=eu-east,datacenter=1a idle=100
+```
+
+[metrics]: /docs/METRICS.md

docs/TLS.md

@@ -0,0 +1,105 @@
+# Transport Layer Security
+
+There is an ongoing effort to standardize TLS options across plugins.  When
+possible, plugins will provide the standard settings described below.  With the
+exception of the advanced configuration available TLS settings will be
+documented in the sample configuration.
+
+### Client Configuration
+
+For client TLS support we have the following options:
+```toml
+## Root certificates for verifying server certificates encoded in PEM format.
+# tls_ca = "/etc/telegraf/ca.pem"
+
+## The public and private keypairs for the client encoded in PEM format.  May
+## contain intermediate certificates.
+# tls_cert = "/etc/telegraf/cert.pem"
+# tls_key = "/etc/telegraf/key.pem"
+## Skip TLS verification.
+# insecure_skip_verify = false
+```
+
+### Server Configuration
+
+The server TLS configuration provides support for TLS mutual authentication:
+
+```toml
+## Set one or more allowed client CA certificate file names to
+## enable mutually authenticated TLS connections.
+# tls_allowed_cacerts = ["/etc/telegraf/clientca.pem"]
+
+## Add service certificate and key.
+# tls_cert = "/etc/telegraf/cert.pem"
+# tls_key = "/etc/telegraf/key.pem"
+```
+
+#### Advanced Configuration
+
+For plugins using the standard server configuration you can also set several
+advanced settings.  These options are not included in the sample configuration
+for the interest of brevity.
+
+```toml
+## Define list of allowed ciphers suites.  If not defined the default ciphers
+## supported by Go will be used.
+##   ex: tls_cipher_suites = [
+## 	         "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305",
+## 	         "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305",
+## 	         "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
+## 	         "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
+## 	         "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
+## 	         "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
+## 	         "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
+## 	         "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA",
+## 	         "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
+## 	         "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA",
+## 	         "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA",
+## 	         "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA",
+## 	         "TLS_RSA_WITH_AES_128_GCM_SHA256",
+## 	         "TLS_RSA_WITH_AES_256_GCM_SHA384",
+## 	         "TLS_RSA_WITH_AES_128_CBC_SHA256",
+## 	         "TLS_RSA_WITH_AES_128_CBC_SHA",
+## 	         "TLS_RSA_WITH_AES_256_CBC_SHA"
+##       ]
+# tls_cipher_suites = []
+
+## Minimum TLS version that is acceptable.
+# tls_min_version = "TLS10"
+
+## Maximum SSL/TLS version that is acceptable.
+# tls_max_version = "TLS13"
+```
+
+Cipher suites for use with `tls_cipher_suites`:
+- `TLS_RSA_WITH_RC4_128_SHA`
+- `TLS_RSA_WITH_3DES_EDE_CBC_SHA`
+- `TLS_RSA_WITH_AES_128_CBC_SHA`
+- `TLS_RSA_WITH_AES_256_CBC_SHA`
+- `TLS_RSA_WITH_AES_128_CBC_SHA256`
+- `TLS_RSA_WITH_AES_128_GCM_SHA256`
+- `TLS_RSA_WITH_AES_256_GCM_SHA384`
+- `TLS_ECDHE_ECDSA_WITH_RC4_128_SHA`
+- `TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA`
+- `TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA`
+- `TLS_ECDHE_RSA_WITH_RC4_128_SHA`
+- `TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA`
+- `TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA`
+- `TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA`
+- `TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256`
+- `TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256`
+- `TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256`
+- `TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256`
+- `TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384`
+- `TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384`
+- `TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305`
+- `TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305`
+- `TLS_AES_128_GCM_SHA256`
+- `TLS_AES_256_GCM_SHA384`
+- `TLS_CHACHA20_POLY1305_SHA256`
+
+TLS versions for use with `tls_min_version` or `tls_max_version`:
+- `TLS10`
+- `TLS11`
+- `TLS12`
+- `TLS13`

docs/WINDOWS_SERVICE.md

@@ -5,7 +5,7 @@ the general steps to set it up.
 
 1. Obtain the telegraf windows distribution
 2. Create the directory `C:\Program Files\Telegraf` (if you install in a different
-   location simply specify the `-config` parameter with the desired location)
+   location simply specify the `--config` parameter with the desired location)
 3. Place the telegraf.exe and the telegraf.conf config file into `C:\Program Files\Telegraf`
 4. To install the service into the Windows Service Manager, run the following in PowerShell as an administrator (If necessary, you can wrap any spaces in the file paths in double quotes ""):
 
@@ -26,6 +26,15 @@ the general steps to set it up.
    > net start telegraf
    ```
 
+## Config Directory
+
+You can also specify a `--config-directory` for the service to use:
+1. Create a directory for config snippets: `C:\Program Files\Telegraf\telegraf.d`
+2. Include the `--config-directory` option when registering the service:
+   ```
+   > C:\"Program Files"\Telegraf\telegraf.exe --service install --config C:\"Program Files"\Telegraf\telegraf.conf --config-directory C:\"Program Files"\Telegraf\telegraf.d
+   ```
+
 ## Other supported operations
 
 Telegraf can manage its own service through the --service flag:
@@ -37,3 +46,26 @@ Telegraf can manage its own service through the --service flag:
 | `telegraf.exe --service start`     | Start the telegraf service    |
 | `telegraf.exe --service stop`      | Stop the telegraf service     |
 
+## Install multiple services
+
+Running multiple instances of Telegraf is seldom needed, as you can run
+multiple instances of each plugin and route metric flow using the metric
+filtering options.  However, if you do need to run multiple telegraf instances
+on a single system, you can install the service with the `--service-name` and
+`--service-display-name` flags to give the services unique names:
+
+```
+> C:\"Program Files"\Telegraf\telegraf.exe --service install --service-name telegraf-1 --service-display-name "Telegraf 1"
+> C:\"Program Files"\Telegraf\telegraf.exe --service install --service-name telegraf-2 --service-display-name "Telegraf 2"
+```
+
+## Troubleshooting
+
+When Telegraf runs as a Windows service, Telegraf logs messages to Windows events log before configuration file with logging settings is loaded.
+Check event log for an error reported by `telegraf` service in case of Telegraf service reports failure on its start: Event Viewer->Windows Logs->Application
+
+**Troubleshooting  common error #1067**
+
+When installing as service in Windows, always double check to specify full path of the config file, otherwise windows service will fail to start
+
+ --config "C:\Program Files\Telegraf\telegraf.conf"

etc/telegraf_windows.conf

@@ -1,18 +1,26 @@
-# Telegraf configuration
+# Telegraf Configuration
-
+#
 # Telegraf is entirely plugin driven. All metrics are gathered from the
 # declared inputs, and sent to the declared outputs.
-
+#
 # Plugins must be declared in here to be active.
 # To deactivate a plugin, comment out the name and any variables.
-
+#
 # Use 'telegraf -config telegraf.conf -test' to see what metrics a config
 # file would generate.
+#
+# Environment variables can be used anywhere in this config file, simply surround
+# them with ${}. For strings the variable must be within quotes (ie, "${STR_VAR}"),
+# for numbers and booleans they should be plain (ie, ${INT_VAR}, ${BOOL_VAR})
+
 
 # Global tags can be specified here in key="value" format.
 [global_tags]
   # dc = "us-east-1" # will tag all metrics with dc=us-east-1
   # rack = "1a"
+  ## Environment variables can be used as tags, and throughout the config file
+  # user = "$USER"
+
 
 # Configuration for telegraf agent
 [agent]
@@ -22,11 +30,15 @@
   ## ie, if interval="10s" then always collect on :00, :10, :20, etc.
   round_interval = true
 
-  ## Telegraf will cache metric_buffer_limit metrics for each output, and will
+  ## Telegraf will send metrics to outputs in batches of at most
-  ## flush this buffer on a successful write.
+  ## metric_batch_size metrics.
-  metric_buffer_limit = 1000
+  ## This controls the size of writes that Telegraf sends to output plugins.
-  ## Flush the buffer whenever full, regardless of flush_interval.
+  metric_batch_size = 1000
-  flush_buffer_when_full = true
+
+  ## Maximum number of unwritten metrics per output.  Increasing this value
+  ## allows for longer periods of output downtime without dropping metrics at the
+  ## cost of higher maximum memory usage.
+  metric_buffer_limit = 10000
 
   ## Collection jitter is used to jitter the collection by a random amount.
   ## Each plugin will sleep for a random time within jitter before collecting.
@@ -34,58 +46,197 @@
   ## same time, which can have a measurable effect on the system.
   collection_jitter = "0s"
 
-  ## Default flushing interval for all outputs. You shouldn't set this below
+  ## Default flushing interval for all outputs. Maximum flush_interval will be
-  ## interval. Maximum flush_interval will be flush_interval + flush_jitter
+  ## flush_interval + flush_jitter
   flush_interval = "10s"
   ## Jitter the flush interval by a random amount. This is primarily to avoid
   ## large write spikes for users running a large number of telegraf instances.
   ## ie, a jitter of 5s and interval 10s means flushes will happen every 10-15s
   flush_jitter = "0s"
 
-  ## Logging configuration:
+  ## By default or when set to "0s", precision will be set to the same
-  ## Run telegraf in debug mode
+  ## timestamp order as the collection interval, with the maximum being 1s.
-  debug = false
+  ##   ie, when interval = "10s", precision will be "1s"
-  ## Run telegraf in quiet mode
+  ##       when interval = "250ms", precision will be "1ms"
-  quiet = false
+  ## Precision will NOT be used for service inputs. It is up to each individual
-  ## Specify the log file name. The empty string means to log to stdout.
+  ## service input to set the timestamp at the appropriate precision.
-  logfile = "/Program Files/Telegraf/telegraf.log"
+  ## Valid time units are "ns", "us" (or "µs"), "ms", "s".
+  precision = ""
+
+  ## Log at debug level.
+  # debug = false
+  ## Log only error level messages.
+  # quiet = false
+
+  ## Log target controls the destination for logs and can be one of "file",
+  ## "stderr" or, on Windows, "eventlog".  When set to "file", the output file
+  ## is determined by the "logfile" setting.
+  # logtarget = "file"
+
+  ## Name of the file to be logged to when using the "file" logtarget.  If set to
+  ## the empty string then logs are written to stderr.
+  # logfile = ""
+
+  ## The logfile will be rotated after the time interval specified.  When set
+  ## to 0 no time based rotation is performed.  Logs are rotated only when
+  ## written to, if there is no log activity rotation may be delayed.
+  # logfile_rotation_interval = "0d"
+
+  ## The logfile will be rotated when it becomes larger than the specified
+  ## size.  When set to 0 no size based rotation is performed.
+  # logfile_rotation_max_size = "0MB"
+
+  ## Maximum number of rotated archives to keep, any older logs are deleted.
+  ## If set to -1, no archives are removed.
+  # logfile_rotation_max_archives = 5
 
   ## Override default hostname, if empty use os.Hostname()
   hostname = ""
+  ## If set to true, do no set the "host" tag in the telegraf agent.
+  omit_hostname = false
 
 
 ###############################################################################
-#                                  OUTPUTS                                    #
+#                            OUTPUT PLUGINS                                   #
 ###############################################################################
 
-# Configuration for influxdb server to send metrics to
+
+# Configuration for sending metrics to InfluxDB
 [[outputs.influxdb]]
-  # The full HTTP or UDP endpoint URL for your InfluxDB instance.
+  ## The full HTTP or UDP URL for your InfluxDB instance.
-  # Multiple urls can be specified but it is assumed that they are part of the same
+  ##
-  # cluster, this means that only ONE of the urls will be written to each interval.
+  ## Multiple URLs can be specified for a single cluster, only ONE of the
-  # urls = ["udp://localhost:8089"] # UDP endpoint example
+  ## urls will be written to each interval.
-  urls = ["http://localhost:8086"] # required
+  # urls = ["unix:///var/run/influxdb.sock"]
-  # The target database for metrics (telegraf will create it if not exists)
+  # urls = ["udp://127.0.0.1:8089"]
-  database = "telegraf" # required
+  # urls = ["http://127.0.0.1:8086"]
-  # Precision of writes, valid values are "ns", "us" (or "µs"), "ms", "s", "m", "h".
-  # note: using second precision greatly helps InfluxDB compression
-  precision = "s"
 
-  ## Write timeout (for the InfluxDB client), formatted as a string.
+  ## The target database for metrics; will be created as needed.
-  ## If not provided, will default to 5s. 0s means no timeout (not recommended).
+  ## For UDP url endpoint database needs to be configured on server side.
-  timeout = "5s"
+  # database = "telegraf"
+
+  ## The value of this tag will be used to determine the database.  If this
+  ## tag is not set the 'database' option is used as the default.
+  # database_tag = ""
+
+  ## If true, the 'database_tag' will not be included in the written metric.
+  # exclude_database_tag = false
+
+  ## If true, no CREATE DATABASE queries will be sent.  Set to true when using
+  ## Telegraf with a user without permissions to create databases or when the
+  ## database already exists.
+  # skip_database_creation = false
+
+  ## Name of existing retention policy to write to.  Empty string writes to
+  ## the default retention policy.  Only takes effect when using HTTP.
+  # retention_policy = ""
+
+  ## The value of this tag will be used to determine the retention policy.  If this
+  ## tag is not set the 'retention_policy' option is used as the default.
+  # retention_policy_tag = ""
+
+  ## If true, the 'retention_policy_tag' will not be included in the written metric.
+  # exclude_retention_policy_tag = false
+
+  ## Write consistency (clusters only), can be: "any", "one", "quorum", "all".
+  ## Only takes effect when using HTTP.
+  # write_consistency = "any"
+
+  ## Timeout for HTTP messages.
+  # timeout = "5s"
+
+  ## HTTP Basic Auth
   # username = "telegraf"
   # password = "metricsmetricsmetricsmetrics"
-  # Set the user agent for HTTP POSTs (can be useful for log differentiation)
+
+  ## HTTP User-Agent
   # user_agent = "telegraf"
-  # Set UDP payload size, defaults to InfluxDB UDP Client default (512 bytes)
+
-  # udp_payload = 512
+  ## UDP payload size is the maximum packet size to send.
+  # udp_payload = "512B"
+
+  ## Optional TLS Config for use on HTTP connections.
+  # tls_ca = "/etc/telegraf/ca.pem"
+  # tls_cert = "/etc/telegraf/cert.pem"
+  # tls_key = "/etc/telegraf/key.pem"
+  ## Use TLS but skip chain & host verification
+  # insecure_skip_verify = false
+
+  ## HTTP Proxy override, if unset values the standard proxy environment
+  ## variables are consulted to determine which proxy, if any, should be used.
+  # http_proxy = "http://corporate.proxy:3128"
+
+  ## Additional HTTP headers
+  # http_headers = {"X-Special-Header" = "Special-Value"}
+
+  ## HTTP Content-Encoding for write request body, can be set to "gzip" to
+  ## compress body or "identity" to apply no encoding.
+  # content_encoding = "identity"
+
+  ## When true, Telegraf will output unsigned integers as unsigned values,
+  ## i.e.: "42u".  You will need a version of InfluxDB supporting unsigned
+  ## integer values.  Enabling this option will result in field type errors if
+  ## existing data has been written.
+  # influx_uint_support = false
+
+# # Configuration for sending metrics to InfluxDB
+# [[outputs.influxdb_v2]]
+#   ## The URLs of the InfluxDB cluster nodes.
+#   ##
+#   ## Multiple URLs can be specified for a single cluster, only ONE of the
+#   ## urls will be written to each interval.
+#   ##   ex: urls = ["https://us-west-2-1.aws.cloud2.influxdata.com"]
+#   urls = ["http://127.0.0.1:9999"]
+#
+#   ## Token for authentication.
+#   token = ""
+#
+#   ## Organization is the name of the organization you wish to write to; must exist.
+#   organization = ""
+#
+#   ## Destination bucket to write into.
+#   bucket = ""
+#
+#   ## The value of this tag will be used to determine the bucket.  If this
+#   ## tag is not set the 'bucket' option is used as the default.
+#   # bucket_tag = ""
+#
+#   ## If true, the bucket tag will not be added to the metric.
+#   # exclude_bucket_tag = false
+#
+#   ## Timeout for HTTP messages.
+#   # timeout = "5s"
+#
+#   ## Additional HTTP headers
+#   # http_headers = {"X-Special-Header" = "Special-Value"}
+#
+#   ## HTTP Proxy override, if unset values the standard proxy environment
+#   ## variables are consulted to determine which proxy, if any, should be used.
+#   # http_proxy = "http://corporate.proxy:3128"
+#
+#   ## HTTP User-Agent
+#   # user_agent = "telegraf"
+#
+#   ## Content-Encoding for write request body, can be set to "gzip" to
+#   ## compress body or "identity" to apply no encoding.
+#   # content_encoding = "gzip"
+#
+#   ## Enable or disable uint support for writing uints influxdb 2.0.
+#   # influx_uint_support = false
+#
+#   ## Optional TLS Config for use on HTTP connections.
+#   # tls_ca = "/etc/telegraf/ca.pem"
+#   # tls_cert = "/etc/telegraf/cert.pem"
+#   # tls_key = "/etc/telegraf/key.pem"
+#   ## Use TLS but skip chain & host verification
+#   # insecure_skip_verify = false
 
 
 ###############################################################################
-#                                  INPUTS                                     #
+#                            INPUT PLUGINS                                    #
 ###############################################################################
 
+
 # Windows Performance Counters plugin.
 # These are the recommended method of monitoring system metrics on windows,
 # as the regular system plugins (inputs.cpu, inputs.mem, etc.) rely on WMI,
@@ -105,10 +256,11 @@
       "% Privileged Time",
       "% User Time",
       "% Processor Time",
+      "% DPC Time",
     ]
     Measurement = "win_cpu"
     # Set to true to include _Total instance when querying for all (*).
-    #IncludeTotal=false
+    IncludeTotal=true
 
   [[inputs.win_perf_counters.object]]
     # Disk times and queues
@@ -116,20 +268,54 @@
     Instances = ["*"]
     Counters = [
       "% Idle Time",
-      "% Disk Time","% Disk Read Time",
+      "% Disk Time",
+      "% Disk Read Time",
       "% Disk Write Time",
-      "% User Time",
+      "% Free Space",
       "Current Disk Queue Length",
+      "Free Megabytes",
     ]
     Measurement = "win_disk"
     # Set to true to include _Total instance when querying for all (*).
     #IncludeTotal=false
 
+  [[inputs.win_perf_counters.object]]
+    ObjectName = "PhysicalDisk"
+    Instances = ["*"]
+    Counters = [
+      "Disk Read Bytes/sec",
+      "Disk Write Bytes/sec",
+      "Current Disk Queue Length",
+      "Disk Reads/sec",
+      "Disk Writes/sec",
+      "% Disk Time",
+      "% Disk Read Time",
+      "% Disk Write Time",
+    ]
+    Measurement = "win_diskio"
+
+  [[inputs.win_perf_counters.object]]
+    ObjectName = "Network Interface"
+    Instances = ["*"]
+    Counters = [
+      "Bytes Received/sec",
+      "Bytes Sent/sec",
+      "Packets Received/sec",
+      "Packets Sent/sec",
+      "Packets Received Discarded",
+      "Packets Outbound Discarded",
+      "Packets Received Errors",
+      "Packets Outbound Errors",
+    ]
+    Measurement = "win_net"
+
   [[inputs.win_perf_counters.object]]
     ObjectName = "System"
     Counters = [
       "Context Switches/sec",
       "System Calls/sec",
+      "Processor Queue Length",
+      "System Up Time",
     ]
     Instances = ["------"]
     Measurement = "win_system"
@@ -149,6 +335,9 @@
       "Transition Faults/sec",
       "Pool Nonpaged Bytes",
       "Pool Paged Bytes",
+      "Standby Cache Reserve Bytes",
+      "Standby Cache Normal Priority Bytes",
+      "Standby Cache Core Bytes",
     ]
     # Use 6 x - to remove the Instance bit from the query.
     Instances = ["------"]
@@ -156,29 +345,41 @@
     # Set to true to include _Total instance when querying for all (*).
     #IncludeTotal=false
 
+  [[inputs.win_perf_counters.object]]
+    # Example query where the Instance portion must be removed to get data back,
+    # such as from the Paging File object.
+    ObjectName = "Paging File"
+    Counters = [
+      "% Usage",
+    ]
+    Instances = ["_Total"]
+    Measurement = "win_swap"
+
 
 # Windows system plugins using WMI (disabled by default, using
 # win_perf_counters over WMI is recommended)
 
+
 # # Read metrics about cpu usage
 # [[inputs.cpu]]
 #   ## Whether to report per-cpu stats or not
 #   percpu = true
 #   ## Whether to report total system cpu stats or not
 #   totalcpu = true
-#   ## Comment this line if you want the raw CPU time metrics
+#   ## If true, collect raw CPU time metrics.
-#   fielddrop = ["time_*"]
+#   collect_cpu_time = false
+#   ## If true, compute and report the sum of all non-idle CPU states.
+#   report_active = false
 
 
 # # Read metrics about disk usage by mount point
 # [[inputs.disk]]
-#   ## By default, telegraf gather stats for all mountpoints.
+#   ## By default stats will be gathered for all mount points.
-#   ## Setting mountpoints will restrict the stats to the specified mountpoints.
+#   ## Set mount_points will restrict the stats to only the specified mount points.
-#   ## mount_points=["/"]
+#   # mount_points = ["/"]
 #
-#   ## Ignore some mountpoints by filesystem type. For example (dev)tmpfs (usually
+#   ## Ignore mount points by filesystem type.
-#   ## present on /run, /var/run, /dev/shm or /dev).
+#   ignore_fs = ["tmpfs", "devtmpfs", "devfs", "overlay", "aufs", "squashfs"]
-#   # ignore_fs = ["tmpfs", "devtmpfs"]
 
 
 # # Read metrics about disk IO by device
@@ -186,9 +387,26 @@
 #   ## By default, telegraf will gather stats for all devices including
 #   ## disk partitions.
 #   ## Setting devices will restrict the stats to the specified devices.
-#   ## devices = ["sda", "sdb"]
+#   # devices = ["sda", "sdb", "vd*"]
-#   ## Uncomment the following line if you do not need disk serial numbers.
+#   ## Uncomment the following line if you need disk serial numbers.
-#   ## skip_serial_number = true
+#   # skip_serial_number = false
+#   #
+#   ## On systems which support it, device metadata can be added in the form of
+#   ## tags.
+#   ## Currently only Linux is supported via udev properties. You can view
+#   ## available properties for a device by running:
+#   ## 'udevadm info -q property -n /dev/sda'
+#   # device_tags = ["ID_FS_TYPE", "ID_FS_USAGE"]
+#   #
+#   ## Using the same metadata source as device_tags, you can also customize the
+#   ## name of the device via templates.
+#   ## The 'name_templates' parameter is a list of templates to try and apply to
+#   ## the device. The template may contain variables in the form of '$PROPERTY' or
+#   ## '${PROPERTY}'. The first template which does not contain any variables not
+#   ## present for the device is used as the device name tag.
+#   ## The typical use case is for LVM volumes, to get the VG/LV name instead of
+#   ## the near-meaningless DM-0 name.
+#   # name_templates = ["$ID_FS_LABEL","$DM_VG_NAME/$DM_LV_NAME"]
 
 
 # # Read metrics about memory usage
@@ -199,4 +417,3 @@
 # # Read metrics about swap memory usage
 # [[inputs.swap]]
 #   # no configuration
-

filter/filter.go

@@ -77,3 +77,40 @@ func compileFilterNoGlob(filters []string) Filter {
 	}
 	return &out
 }
+
+type IncludeExcludeFilter struct {
+	include Filter
+	exclude Filter
+}
+
+func NewIncludeExcludeFilter(
+	include []string,
+	exclude []string,
+) (Filter, error) {
+	in, err := Compile(include)
+	if err != nil {
+		return nil, err
+	}
+
+	ex, err := Compile(exclude)
+	if err != nil {
+		return nil, err
+	}
+
+	return &IncludeExcludeFilter{in, ex}, nil
+}
+
+func (f *IncludeExcludeFilter) Match(s string) bool {
+	if f.include != nil {
+		if !f.include.Match(s) {
+			return false
+		}
+	}
+
+	if f.exclude != nil {
+		if f.exclude.Match(s) {
+			return false
+		}
+	}
+	return true
+}

filter/filter_test.go

@@ -37,6 +37,24 @@ func TestCompile(t *testing.T) {
 	assert.True(t, f.Match("network"))
 }
 
+func TestIncludeExclude(t *testing.T) {
+	tags := []string{}
+	labels := []string{"best", "com_influxdata", "timeseries", "com_influxdata_telegraf", "ever"}
+
+	filter, err := NewIncludeExcludeFilter([]string{}, []string{"com_influx*"})
+	if err != nil {
+		t.Fatalf("Failed to create include/exclude filter - %v", err)
+	}
+
+	for i := range labels {
+		if filter.Match(labels[i]) {
+			tags = append(tags, labels[i])
+		}
+	}
+
+	assert.Equal(t, []string{"best", "timeseries", "ever"}, tags)
+}
+
 var benchbool bool
 
 func BenchmarkFilterSingleNoGlobFalse(b *testing.B) {

go.mod

@@ -0,0 +1,161 @@
+module github.com/influxdata/telegraf
+
+go 1.12
+
+require (
+	cloud.google.com/go v0.53.0
+	cloud.google.com/go/datastore v1.1.0 // indirect
+	cloud.google.com/go/pubsub v1.2.0
+	code.cloudfoundry.org/clock v1.0.0 // indirect
+	collectd.org v0.3.0
+	github.com/Azure/azure-event-hubs-go/v3 v3.2.0
+	github.com/Azure/azure-storage-queue-go v0.0.0-20181215014128-6ed74e755687
+	github.com/Azure/go-autorest/autorest v0.9.3
+	github.com/Azure/go-autorest/autorest/azure/auth v0.4.2
+	github.com/BurntSushi/toml v0.3.1
+	github.com/ChimeraCoder/anaconda v2.0.0+incompatible
+	github.com/ChimeraCoder/tokenbucket v0.0.0-20131201223612-c5a927568de7 // indirect
+	github.com/Mellanox/rdmamap v0.0.0-20191106181932-7c3c4763a6ee
+	github.com/Microsoft/ApplicationInsights-Go v0.4.2
+	github.com/Microsoft/go-winio v0.4.9 // indirect
+	github.com/Shopify/sarama v1.24.1
+	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6
+	github.com/aerospike/aerospike-client-go v1.27.0
+	github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4
+	github.com/amir/raidman v0.0.0-20170415203553-1ccc43bfb9c9
+	github.com/apache/thrift v0.12.0
+	github.com/aristanetworks/glog v0.0.0-20191112221043-67e8567f59f3 // indirect
+	github.com/aristanetworks/goarista v0.0.0-20190325233358-a123909ec740
+	github.com/armon/go-metrics v0.3.0 // indirect
+	github.com/aws/aws-sdk-go v1.30.9
+	github.com/azr/backoff v0.0.0-20160115115103-53511d3c7330 // indirect
+	github.com/benbjohnson/clock v1.0.2
+	github.com/bitly/go-hostpool v0.1.0 // indirect
+	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
+	github.com/caio/go-tdigest v2.3.0+incompatible // indirect
+	github.com/cenkalti/backoff v2.0.0+incompatible // indirect
+	github.com/cisco-ie/nx-telemetry-proto v0.0.0-20190531143454-82441e232cf6
+	github.com/cockroachdb/apd v1.1.0 // indirect
+	github.com/couchbase/go-couchbase v0.0.0-20180501122049-16db1f1fe037
+	github.com/couchbase/gomemcached v0.0.0-20180502221210-0da75df14530 // indirect
+	github.com/couchbase/goutils v0.0.0-20180530154633-e865a1461c8a // indirect
+	github.com/denisenkom/go-mssqldb v0.0.0-20190707035753-2be1aa521ff4
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible
+	github.com/docker/distribution v2.6.0-rc.1.0.20170726174610-edc3ab29cdff+incompatible // indirect
+	github.com/docker/docker v1.4.2-0.20180327123150-ed7b6428c133
+	github.com/docker/go-connections v0.3.0 // indirect
+	github.com/docker/go-units v0.3.3 // indirect
+	github.com/docker/libnetwork v0.8.0-dev.2.0.20181012153825-d7b61745d166
+	github.com/dustin/go-jsonpointer v0.0.0-20160814072949-ba0abeacc3dc // indirect
+	github.com/dustin/gojson v0.0.0-20160307161227-2e71ec9dd5ad // indirect
+	github.com/eclipse/paho.mqtt.golang v1.2.0
+	github.com/ericchiang/k8s v1.2.0
+	github.com/garyburd/go-oauth v0.0.0-20180319155456-bca2e7f09a17 // indirect
+	github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32
+	github.com/glinton/ping v0.1.4-0.20200311211934-5ac87da8cd96
+	github.com/go-logfmt/logfmt v0.4.0
+	github.com/go-ole/go-ole v1.2.1 // indirect
+	github.com/go-redis/redis v6.12.0+incompatible
+	github.com/go-sql-driver/mysql v1.5.0
+	github.com/goburrow/modbus v0.1.0
+	github.com/goburrow/serial v0.1.0 // indirect
+	github.com/gobwas/glob v0.2.3
+	github.com/gofrs/uuid v2.1.0+incompatible
+	github.com/gogo/protobuf v1.2.2-0.20190723190241-65acae22fc9d
+	github.com/golang/geo v0.0.0-20190916061304-5b978397cfec
+	github.com/golang/protobuf v1.3.5
+	github.com/google/go-cmp v0.4.0
+	github.com/google/go-github v17.0.0+incompatible
+	github.com/google/go-querystring v1.0.0 // indirect
+	github.com/gorilla/mux v1.6.2
+	github.com/gotestyourself/gotestyourself v2.2.0+incompatible // indirect
+	github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed // indirect
+	github.com/harlow/kinesis-consumer v0.3.1-0.20181230152818-2f58b136fee0
+	github.com/hashicorp/consul v1.2.1
+	github.com/hashicorp/go-msgpack v0.5.5 // indirect
+	github.com/hashicorp/go-rootcerts v0.0.0-20160503143440-6bb64b370b90 // indirect
+	github.com/hashicorp/memberlist v0.1.5 // indirect
+	github.com/hashicorp/serf v0.8.1 // indirect
+	github.com/influxdata/go-syslog/v2 v2.0.1
+	github.com/influxdata/tail v1.0.1-0.20180327235535-c43482518d41
+	github.com/influxdata/toml v0.0.0-20190415235208-270119a8ce65
+	github.com/influxdata/wlog v0.0.0-20160411224016-7c63b0a71ef8
+	github.com/jackc/fake v0.0.0-20150926172116-812a484cc733 // indirect
+	github.com/jackc/pgx v3.6.0+incompatible
+	github.com/jcmturner/gofork v1.0.0 // indirect
+	github.com/kardianos/service v1.0.0
+	github.com/karrick/godirwalk v1.12.0
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
+	github.com/klauspost/compress v1.9.2 // indirect
+	github.com/kubernetes/apimachinery v0.0.0-20190119020841-d41becfba9ee
+	github.com/kylelemons/godebug v1.1.0 // indirect
+	github.com/leesper/go_rng v0.0.0-20190531154944-a612b043e353 // indirect
+	github.com/lib/pq v1.3.0 // indirect
+	github.com/mailru/easyjson v0.0.0-20180717111219-efc7eb8984d6 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1
+	github.com/mdlayher/apcupsd v0.0.0-20190314144147-eb3dd99a75fe
+	github.com/miekg/dns v1.0.14
+	github.com/mitchellh/go-testing-interface v1.0.0 // indirect
+	github.com/mmcdole/gofeed v1.0.0
+	github.com/multiplay/go-ts3 v1.0.0
+	github.com/naoina/go-stringutil v0.1.0 // indirect
+	github.com/nats-io/nats-server/v2 v2.1.4
+	github.com/nats-io/nats.go v1.9.1
+	github.com/newrelic/newrelic-telemetry-sdk-go v0.2.0
+	github.com/nsqio/go-nsq v1.0.7
+	github.com/openconfig/gnmi v0.0.0-20180912164834-33a1865c3029
+	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
+	github.com/opentracing-contrib/go-observer v0.0.0-20170622124052-a52f23424492 // indirect
+	github.com/opentracing/opentracing-go v1.0.2 // indirect
+	github.com/openzipkin/zipkin-go-opentracing v0.3.4
+	github.com/pkg/errors v0.9.1
+	github.com/prometheus/client_golang v1.5.1
+	github.com/prometheus/client_model v0.2.0
+	github.com/prometheus/common v0.9.1
+	github.com/safchain/ethtool v0.0.0-20200218184317-f459e2d13664
+	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec // indirect
+	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b // indirect
+	github.com/shirou/gopsutil v2.20.2+incompatible
+	github.com/shopspring/decimal v0.0.0-20200105231215-408a2507e114 // indirect
+	github.com/sirupsen/logrus v1.4.2
+	github.com/soniah/gosnmp v1.25.0
+	github.com/streadway/amqp v0.0.0-20180528204448-e5adc2ada8b8
+	github.com/stretchr/testify v1.5.1
+	github.com/tbrandon/mbserver v0.0.0-20170611213546-993e1772cc62
+	github.com/tedsuo/ifrit v0.0.0-20191009134036-9a97d0632f00 // indirect
+	github.com/tidwall/gjson v1.3.0
+	github.com/vishvananda/netlink v0.0.0-20171020171820-b2de5d10e38e // indirect
+	github.com/vishvananda/netns v0.0.0-20180720170159-13995c7128cc // indirect
+	github.com/vjeantet/grok v1.0.0
+	github.com/vmware/govmomi v0.19.0
+	github.com/wavefronthq/wavefront-sdk-go v0.9.2
+	github.com/wvanbergen/kafka v0.0.0-20171203153745-e2edea948ddf
+	github.com/wvanbergen/kazoo-go v0.0.0-20180202103751-f72d8611297a // indirect
+	github.com/yuin/gopher-lua v0.0.0-20180630135845-46796da1b0b4 // indirect
+	golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6 // indirect
+	golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
+	golang.org/x/net v0.0.0-20200301022130-244492dfa37a
+	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
+	golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a // indirect
+	golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4
+	golang.org/x/tools v0.0.0-20200317043434-63da46f3035e // indirect
+	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20200205215550-e35592f146e4
+	gonum.org/v1/gonum v0.6.2 // indirect
+	google.golang.org/api v0.20.0
+	google.golang.org/genproto v0.0.0-20200317114155-1f3552e48f24
+	google.golang.org/grpc v1.28.0
+	gopkg.in/fatih/pool.v2 v2.0.0 // indirect
+	gopkg.in/gorethink/gorethink.v3 v3.0.5
+	gopkg.in/jcmturner/gokrb5.v7 v7.3.0 // indirect
+	gopkg.in/ldap.v3 v3.1.0
+	gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce
+	gopkg.in/olivere/elastic.v5 v5.0.70
+	gopkg.in/yaml.v2 v2.2.5
+	gotest.tools v2.2.0+incompatible // indirect
+	honnef.co/go/tools v0.0.1-2020.1.3 // indirect
+	k8s.io/apimachinery v0.17.1 // indirect
+)
+
+// replaced due to https://github.com/satori/go.uuid/issues/73
+replace github.com/satori/go.uuid => github.com/gofrs/uuid v3.2.0+incompatible

go.sum

@@ -0,0 +1,915 @@
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input.go

@@ -1,11 +1,7 @@
 package telegraf
 
 type Input interface {
-	// SampleConfig returns the default configuration of the Input
+	PluginDescriber
-	SampleConfig() string
-
-	// Description returns a one-sentence description on the Input
-	Description() string
 
 	// Gather takes in an accumulator and adds the metrics that the Input
 	// gathers. This is called every "interval"
@@ -13,17 +9,10 @@ type Input interface {
 }
 
 type ServiceInput interface {
-	// SampleConfig returns the default configuration of the Input
+	Input
-	SampleConfig() string
 
-	// Description returns a one-sentence description on the Input
+	// Start the ServiceInput.  The Accumulator may be retained and used until
-	Description() string
+	// Stop returns.
-
-	// Gather takes in an accumulator and adds the metrics that the Input
-	// gathers. This is called every "interval"
-	Gather(Accumulator) error
-
-	// Start starts the ServiceInput's service, whatever that may be
 	Start(Accumulator) error
 
 	// Stop stops the services and closes any necessary channels and connections

internal/buffer/buffer.go

@@ -1,77 +0,0 @@
-package buffer
-
-import (
-	"github.com/influxdata/telegraf"
-)
-
-// Buffer is an object for storing metrics in a circular buffer.
-type Buffer struct {
-	buf chan telegraf.Metric
-	// total dropped metrics
-	drops int
-	// total metrics added
-	total int
-}
-
-// NewBuffer returns a Buffer
-//   size is the maximum number of metrics that Buffer will cache. If Add is
-//   called when the buffer is full, then the oldest metric(s) will be dropped.
-func NewBuffer(size int) *Buffer {
-	return &Buffer{
-		buf: make(chan telegraf.Metric, size),
-	}
-}
-
-// IsEmpty returns true if Buffer is empty.
-func (b *Buffer) IsEmpty() bool {
-	return len(b.buf) == 0
-}
-
-// Len returns the current length of the buffer.
-func (b *Buffer) Len() int {
-	return len(b.buf)
-}
-
-// Drops returns the total number of dropped metrics that have occured in this
-// buffer since instantiation.
-func (b *Buffer) Drops() int {
-	return b.drops
-}
-
-// Total returns the total number of metrics that have been added to this buffer.
-func (b *Buffer) Total() int {
-	return b.total
-}
-
-// Add adds metrics to the buffer.
-func (b *Buffer) Add(metrics ...telegraf.Metric) {
-	for i, _ := range metrics {
-		b.total++
-		select {
-		case b.buf <- metrics[i]:
-		default:
-			b.drops++
-			<-b.buf
-			b.buf <- metrics[i]
-		}
-	}
-}
-
-// Batch returns a batch of metrics of size batchSize.
-// the batch will be of maximum length batchSize. It can be less than batchSize,
-// if the length of Buffer is less than batchSize.
-func (b *Buffer) Batch(batchSize int) []telegraf.Metric {
-	n := min(len(b.buf), batchSize)
-	out := make([]telegraf.Metric, n)
-	for i := 0; i < n; i++ {
-		out[i] = <-b.buf
-	}
-	return out
-}
-
-func min(a, b int) int {
-	if b < a {
-		return b
-	}
-	return a
-}

internal/buffer/buffer_test.go

@@ -1,94 +0,0 @@
-package buffer
-
-import (
-	"testing"
-
-	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/testutil"
-
-	"github.com/stretchr/testify/assert"
-)
-
-var metricList = []telegraf.Metric{
-	testutil.TestMetric(2, "mymetric1"),
-	testutil.TestMetric(1, "mymetric2"),
-	testutil.TestMetric(11, "mymetric3"),
-	testutil.TestMetric(15, "mymetric4"),
-	testutil.TestMetric(8, "mymetric5"),
-}
-
-func BenchmarkAddMetrics(b *testing.B) {
-	buf := NewBuffer(10000)
-	m := testutil.TestMetric(1, "mymetric")
-	for n := 0; n < b.N; n++ {
-		buf.Add(m)
-	}
-}
-
-func TestNewBufferBasicFuncs(t *testing.T) {
-	b := NewBuffer(10)
-
-	assert.True(t, b.IsEmpty())
-	assert.Zero(t, b.Len())
-	assert.Zero(t, b.Drops())
-	assert.Zero(t, b.Total())
-
-	m := testutil.TestMetric(1, "mymetric")
-	b.Add(m)
-	assert.False(t, b.IsEmpty())
-	assert.Equal(t, b.Len(), 1)
-	assert.Equal(t, b.Drops(), 0)
-	assert.Equal(t, b.Total(), 1)
-
-	b.Add(metricList...)
-	assert.False(t, b.IsEmpty())
-	assert.Equal(t, b.Len(), 6)
-	assert.Equal(t, b.Drops(), 0)
-	assert.Equal(t, b.Total(), 6)
-}
-
-func TestDroppingMetrics(t *testing.T) {
-	b := NewBuffer(10)
-
-	// Add up to the size of the buffer
-	b.Add(metricList...)
-	b.Add(metricList...)
-	assert.False(t, b.IsEmpty())
-	assert.Equal(t, b.Len(), 10)
-	assert.Equal(t, b.Drops(), 0)
-	assert.Equal(t, b.Total(), 10)
-
-	// Add 5 more and verify they were dropped
-	b.Add(metricList...)
-	assert.False(t, b.IsEmpty())
-	assert.Equal(t, b.Len(), 10)
-	assert.Equal(t, b.Drops(), 5)
-	assert.Equal(t, b.Total(), 15)
-}
-
-func TestGettingBatches(t *testing.T) {
-	b := NewBuffer(20)
-
-	// Verify that the buffer returned is smaller than requested when there are
-	// not as many items as requested.
-	b.Add(metricList...)
-	batch := b.Batch(10)
-	assert.Len(t, batch, 5)
-
-	// Verify that the buffer is now empty
-	assert.True(t, b.IsEmpty())
-	assert.Zero(t, b.Len())
-	assert.Zero(t, b.Drops())
-	assert.Equal(t, b.Total(), 5)
-
-	// Verify that the buffer returned is not more than the size requested
-	b.Add(metricList...)
-	batch = b.Batch(3)
-	assert.Len(t, batch, 3)
-
-	// Verify that buffer is not empty
-	assert.False(t, b.IsEmpty())
-	assert.Equal(t, b.Len(), 2)
-	assert.Equal(t, b.Drops(), 0)
-	assert.Equal(t, b.Total(), 10)
-}

internal/choice/choice.go

@@ -0,0 +1,36 @@
+// Package choice provides basic functions for working with
+// plugin options that must be one of several values.
+package choice
+
+import "fmt"
+
+// Contains return true if the choice in the list of choices.
+func Contains(choice string, choices []string) bool {
+	for _, item := range choices {
+		if item == choice {
+			return true
+		}
+	}
+	return false
+}
+
+// CheckSContains returns an error if a choice is not one of
+// the available choices.
+func Check(choice string, available []string) error {
+	if !Contains(choice, available) {
+		return fmt.Errorf("unknown choice %s", choice)
+	}
+	return nil
+}
+
+// CheckSliceContains returns an error if the choices is not a subset of
+// available.
+func CheckSlice(choices, available []string) error {
+	for _, choice := range choices {
+		err := Check(choice, available)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

internal/config/config.go

@@ -1,997 +0,0 @@
-package config
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"os"
-	"path/filepath"
-	"regexp"
-	"runtime"
-	"sort"
-	"strings"
-	"time"
-
-	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/internal"
-	"github.com/influxdata/telegraf/internal/models"
-	"github.com/influxdata/telegraf/plugins/inputs"
-	"github.com/influxdata/telegraf/plugins/outputs"
-	"github.com/influxdata/telegraf/plugins/parsers"
-	"github.com/influxdata/telegraf/plugins/serializers"
-
-	"github.com/influxdata/config"
-	"github.com/influxdata/toml"
-	"github.com/influxdata/toml/ast"
-)
-
-var (
-	// Default input plugins
-	inputDefaults = []string{"cpu", "mem", "swap", "system", "kernel",
-		"processes", "disk", "diskio"}
-
-	// Default output plugins
-	outputDefaults = []string{"influxdb"}
-
-	// envVarRe is a regex to find environment variables in the config file
-	envVarRe = regexp.MustCompile(`\$\w+`)
-)
-
-// Config specifies the URL/user/password for the database that telegraf
-// will be logging to, as well as all the plugins that the user has
-// specified
-type Config struct {
-	Tags          map[string]string
-	InputFilters  []string
-	OutputFilters []string
-
-	Agent   *AgentConfig
-	Inputs  []*models.RunningInput
-	Outputs []*models.RunningOutput
-}
-
-func NewConfig() *Config {
-	c := &Config{
-		// Agent defaults:
-		Agent: &AgentConfig{
-			Interval:      internal.Duration{Duration: 10 * time.Second},
-			RoundInterval: true,
-			FlushInterval: internal.Duration{Duration: 10 * time.Second},
-		},
-
-		Tags:          make(map[string]string),
-		Inputs:        make([]*models.RunningInput, 0),
-		Outputs:       make([]*models.RunningOutput, 0),
-		InputFilters:  make([]string, 0),
-		OutputFilters: make([]string, 0),
-	}
-	return c
-}
-
-type AgentConfig struct {
-	// Interval at which to gather information
-	Interval internal.Duration
-
-	// RoundInterval rounds collection interval to 'interval'.
-	//     ie, if Interval=10s then always collect on :00, :10, :20, etc.
-	RoundInterval bool
-
-	// By default, precision will be set to the same timestamp order as the
-	// collection interval, with the maximum being 1s.
-	//   ie, when interval = "10s", precision will be "1s"
-	//       when interval = "250ms", precision will be "1ms"
-	// Precision will NOT be used for service inputs. It is up to each individual
-	// service input to set the timestamp at the appropriate precision.
-	Precision internal.Duration
-
-	// CollectionJitter is used to jitter the collection by a random amount.
-	// Each plugin will sleep for a random time within jitter before collecting.
-	// This can be used to avoid many plugins querying things like sysfs at the
-	// same time, which can have a measurable effect on the system.
-	CollectionJitter internal.Duration
-
-	// FlushInterval is the Interval at which to flush data
-	FlushInterval internal.Duration
-
-	// FlushJitter Jitters the flush interval by a random amount.
-	// This is primarily to avoid large write spikes for users running a large
-	// number of telegraf instances.
-	// ie, a jitter of 5s and interval 10s means flushes will happen every 10-15s
-	FlushJitter internal.Duration
-
-	// MetricBatchSize is the maximum number of metrics that is wrote to an
-	// output plugin in one call.
-	MetricBatchSize int
-
-	// MetricBufferLimit is the max number of metrics that each output plugin
-	// will cache. The buffer is cleared when a successful write occurs. When
-	// full, the oldest metrics will be overwritten. This number should be a
-	// multiple of MetricBatchSize. Due to current implementation, this could
-	// not be less than 2 times MetricBatchSize.
-	MetricBufferLimit int
-
-	// FlushBufferWhenFull tells Telegraf to flush the metric buffer whenever
-	// it fills up, regardless of FlushInterval. Setting this option to true
-	// does _not_ deactivate FlushInterval.
-	FlushBufferWhenFull bool
-
-	// TODO(cam): Remove UTC and parameter, they are no longer
-	// valid for the agent config. Leaving them here for now for backwards-
-	// compatability
-	UTC bool `toml:"utc"`
-
-	// Debug is the option for running in debug mode
-	Debug bool
-
-	// Logfile specifies the file to send logs to
-	Logfile string
-
-	// Quiet is the option for running in quiet mode
-	Quiet        bool
-	Hostname     string
-	OmitHostname bool
-}
-
-// Inputs returns a list of strings of the configured inputs.
-func (c *Config) InputNames() []string {
-	var name []string
-	for _, input := range c.Inputs {
-		name = append(name, input.Name)
-	}
-	return name
-}
-
-// Outputs returns a list of strings of the configured outputs.
-func (c *Config) OutputNames() []string {
-	var name []string
-	for _, output := range c.Outputs {
-		name = append(name, output.Name)
-	}
-	return name
-}
-
-// ListTags returns a string of tags specified in the config,
-// line-protocol style
-func (c *Config) ListTags() string {
-	var tags []string
-
-	for k, v := range c.Tags {
-		tags = append(tags, fmt.Sprintf("%s=%s", k, v))
-	}
-
-	sort.Strings(tags)
-
-	return strings.Join(tags, " ")
-}
-
-var header = `# Telegraf Configuration
-#
-# Telegraf is entirely plugin driven. All metrics are gathered from the
-# declared inputs, and sent to the declared outputs.
-#
-# Plugins must be declared in here to be active.
-# To deactivate a plugin, comment out the name and any variables.
-#
-# Use 'telegraf -config telegraf.conf -test' to see what metrics a config
-# file would generate.
-#
-# Environment variables can be used anywhere in this config file, simply prepend
-# them with $. For strings the variable must be within quotes (ie, "$STR_VAR"),
-# for numbers and booleans they should be plain (ie, $INT_VAR, $BOOL_VAR)
-
-
-# Global tags can be specified here in key="value" format.
-[global_tags]
-  # dc = "us-east-1" # will tag all metrics with dc=us-east-1
-  # rack = "1a"
-  ## Environment variables can be used as tags, and throughout the config file
-  # user = "$USER"
-
-
-# Configuration for telegraf agent
-[agent]
-  ## Default data collection interval for all inputs
-  interval = "10s"
-  ## Rounds collection interval to 'interval'
-  ## ie, if interval="10s" then always collect on :00, :10, :20, etc.
-  round_interval = true
-
-  ## Telegraf will send metrics to outputs in batches of at most
-  ## metric_batch_size metrics.
-  ## This controls the size of writes that Telegraf sends to output plugins.
-  metric_batch_size = 1000
-
-  ## For failed writes, telegraf will cache metric_buffer_limit metrics for each
-  ## output, and will flush this buffer on a successful write. Oldest metrics
-  ## are dropped first when this buffer fills.
-  ## This buffer only fills when writes fail to output plugin(s).
-  metric_buffer_limit = 10000
-
-  ## Collection jitter is used to jitter the collection by a random amount.
-  ## Each plugin will sleep for a random time within jitter before collecting.
-  ## This can be used to avoid many plugins querying things like sysfs at the
-  ## same time, which can have a measurable effect on the system.
-  collection_jitter = "0s"
-
-  ## Default flushing interval for all outputs. You shouldn't set this below
-  ## interval. Maximum flush_interval will be flush_interval + flush_jitter
-  flush_interval = "10s"
-  ## Jitter the flush interval by a random amount. This is primarily to avoid
-  ## large write spikes for users running a large number of telegraf instances.
-  ## ie, a jitter of 5s and interval 10s means flushes will happen every 10-15s
-  flush_jitter = "0s"
-
-  ## By default, precision will be set to the same timestamp order as the
-  ## collection interval, with the maximum being 1s.
-  ## Precision will NOT be used for service inputs, such as logparser and statsd.
-  ## Valid values are "ns", "us" (or "µs"), "ms", "s".
-  precision = ""
-
-  ## Logging configuration:
-  ## Run telegraf with debug log messages.
-  debug = false
-  ## Run telegraf in quiet mode (error log messages only).
-  quiet = false
-  ## Specify the log file name. The empty string means to log to stdout.
-  logfile = ""
-
-  ## Override default hostname, if empty use os.Hostname()
-  hostname = ""
-  ## If set to true, do no set the "host" tag in the telegraf agent.
-  omit_hostname = false
-
-
-###############################################################################
-#                            OUTPUT PLUGINS                                   #
-###############################################################################
-`
-
-var inputHeader = `
-
-###############################################################################
-#                            INPUT PLUGINS                                    #
-###############################################################################
-`
-
-var serviceInputHeader = `
-
-###############################################################################
-#                            SERVICE INPUT PLUGINS                            #
-###############################################################################
-`
-
-// PrintSampleConfig prints the sample config
-func PrintSampleConfig(inputFilters []string, outputFilters []string) {
-	fmt.Printf(header)
-
-	if len(outputFilters) != 0 {
-		printFilteredOutputs(outputFilters, false)
-	} else {
-		printFilteredOutputs(outputDefaults, false)
-		// Print non-default outputs, commented
-		var pnames []string
-		for pname := range outputs.Outputs {
-			if !sliceContains(pname, outputDefaults) {
-				pnames = append(pnames, pname)
-			}
-		}
-		sort.Strings(pnames)
-		printFilteredOutputs(pnames, true)
-	}
-
-	fmt.Printf(inputHeader)
-	if len(inputFilters) != 0 {
-		printFilteredInputs(inputFilters, false)
-	} else {
-		printFilteredInputs(inputDefaults, false)
-		// Print non-default inputs, commented
-		var pnames []string
-		for pname := range inputs.Inputs {
-			if !sliceContains(pname, inputDefaults) {
-				pnames = append(pnames, pname)
-			}
-		}
-		sort.Strings(pnames)
-		printFilteredInputs(pnames, true)
-	}
-}
-
-func printFilteredInputs(inputFilters []string, commented bool) {
-	// Filter inputs
-	var pnames []string
-	for pname := range inputs.Inputs {
-		if sliceContains(pname, inputFilters) {
-			pnames = append(pnames, pname)
-		}
-	}
-	sort.Strings(pnames)
-
-	// cache service inputs to print them at the end
-	servInputs := make(map[string]telegraf.ServiceInput)
-	// for alphabetical looping:
-	servInputNames := []string{}
-
-	// Print Inputs
-	for _, pname := range pnames {
-		creator := inputs.Inputs[pname]
-		input := creator()
-
-		switch p := input.(type) {
-		case telegraf.ServiceInput:
-			servInputs[pname] = p
-			servInputNames = append(servInputNames, pname)
-			continue
-		}
-
-		printConfig(pname, input, "inputs", commented)
-	}
-
-	// Print Service Inputs
-	if len(servInputs) == 0 {
-		return
-	}
-	sort.Strings(servInputNames)
-	fmt.Printf(serviceInputHeader)
-	for _, name := range servInputNames {
-		printConfig(name, servInputs[name], "inputs", commented)
-	}
-}
-
-func printFilteredOutputs(outputFilters []string, commented bool) {
-	// Filter outputs
-	var onames []string
-	for oname := range outputs.Outputs {
-		if sliceContains(oname, outputFilters) {
-			onames = append(onames, oname)
-		}
-	}
-	sort.Strings(onames)
-
-	// Print Outputs
-	for _, oname := range onames {
-		creator := outputs.Outputs[oname]
-		output := creator()
-		printConfig(oname, output, "outputs", commented)
-	}
-}
-
-type printer interface {
-	Description() string
-	SampleConfig() string
-}
-
-func printConfig(name string, p printer, op string, commented bool) {
-	comment := ""
-	if commented {
-		comment = "# "
-	}
-	fmt.Printf("\n%s# %s\n%s[[%s.%s]]", comment, p.Description(), comment,
-		op, name)
-
-	config := p.SampleConfig()
-	if config == "" {
-		fmt.Printf("\n%s  # no configuration\n\n", comment)
-	} else {
-		lines := strings.Split(config, "\n")
-		for i, line := range lines {
-			if i == 0 || i == len(lines)-1 {
-				fmt.Print("\n")
-				continue
-			}
-			fmt.Print(strings.TrimRight(comment+line, " ") + "\n")
-		}
-	}
-}
-
-func sliceContains(name string, list []string) bool {
-	for _, b := range list {
-		if b == name {
-			return true
-		}
-	}
-	return false
-}
-
-// PrintInputConfig prints the config usage of a single input.
-func PrintInputConfig(name string) error {
-	if creator, ok := inputs.Inputs[name]; ok {
-		printConfig(name, creator(), "inputs", false)
-	} else {
-		return errors.New(fmt.Sprintf("Input %s not found", name))
-	}
-	return nil
-}
-
-// PrintOutputConfig prints the config usage of a single output.
-func PrintOutputConfig(name string) error {
-	if creator, ok := outputs.Outputs[name]; ok {
-		printConfig(name, creator(), "outputs", false)
-	} else {
-		return errors.New(fmt.Sprintf("Output %s not found", name))
-	}
-	return nil
-}
-
-func (c *Config) LoadDirectory(path string) error {
-	walkfn := func(thispath string, info os.FileInfo, _ error) error {
-		if info.IsDir() {
-			return nil
-		}
-		name := info.Name()
-		if len(name) < 6 || name[len(name)-5:] != ".conf" {
-			return nil
-		}
-		err := c.LoadConfig(thispath)
-		if err != nil {
-			return err
-		}
-		return nil
-	}
-	return filepath.Walk(path, walkfn)
-}
-
-// Try to find a default config file at these locations (in order):
-//   1. $TELEGRAF_CONFIG_PATH
-//   2. $HOME/.telegraf/telegraf.conf
-//   3. /etc/telegraf/telegraf.conf
-//
-func getDefaultConfigPath() (string, error) {
-	envfile := os.Getenv("TELEGRAF_CONFIG_PATH")
-	homefile := os.ExpandEnv("${HOME}/.telegraf/telegraf.conf")
-	etcfile := "/etc/telegraf/telegraf.conf"
-	if runtime.GOOS == "windows" {
-		etcfile = `C:\Program Files\Telegraf\telegraf.conf`
-	}
-	for _, path := range []string{envfile, homefile, etcfile} {
-		if _, err := os.Stat(path); err == nil {
-			log.Printf("I! Using config file: %s", path)
-			return path, nil
-		}
-	}
-
-	// if we got here, we didn't find a file in a default location
-	return "", fmt.Errorf("No config file specified, and could not find one"+
-		" in $TELEGRAF_CONFIG_PATH, %s, or %s", homefile, etcfile)
-}
-
-// LoadConfig loads the given config file and applies it to c
-func (c *Config) LoadConfig(path string) error {
-	var err error
-	if path == "" {
-		if path, err = getDefaultConfigPath(); err != nil {
-			return err
-		}
-	}
-	tbl, err := parseFile(path)
-	if err != nil {
-		return fmt.Errorf("Error parsing %s, %s", path, err)
-	}
-
-	// Parse tags tables first:
-	for _, tableName := range []string{"tags", "global_tags"} {
-		if val, ok := tbl.Fields[tableName]; ok {
-			subTable, ok := val.(*ast.Table)
-			if !ok {
-				return fmt.Errorf("%s: invalid configuration", path)
-			}
-			if err = config.UnmarshalTable(subTable, c.Tags); err != nil {
-				log.Printf("E! Could not parse [global_tags] config\n")
-				return fmt.Errorf("Error parsing %s, %s", path, err)
-			}
-		}
-	}
-
-	// Parse agent table:
-	if val, ok := tbl.Fields["agent"]; ok {
-		subTable, ok := val.(*ast.Table)
-		if !ok {
-			return fmt.Errorf("%s: invalid configuration", path)
-		}
-		if err = config.UnmarshalTable(subTable, c.Agent); err != nil {
-			log.Printf("E! Could not parse [agent] config\n")
-			return fmt.Errorf("Error parsing %s, %s", path, err)
-		}
-	}
-
-	// Parse all the rest of the plugins:
-	for name, val := range tbl.Fields {
-		subTable, ok := val.(*ast.Table)
-		if !ok {
-			return fmt.Errorf("%s: invalid configuration", path)
-		}
-
-		switch name {
-		case "agent", "global_tags", "tags":
-		case "outputs":
-			for pluginName, pluginVal := range subTable.Fields {
-				switch pluginSubTable := pluginVal.(type) {
-				case *ast.Table:
-					if err = c.addOutput(pluginName, pluginSubTable); err != nil {
-						return fmt.Errorf("Error parsing %s, %s", path, err)
-					}
-				case []*ast.Table:
-					for _, t := range pluginSubTable {
-						if err = c.addOutput(pluginName, t); err != nil {
-							return fmt.Errorf("Error parsing %s, %s", path, err)
-						}
-					}
-				default:
-					return fmt.Errorf("Unsupported config format: %s, file %s",
-						pluginName, path)
-				}
-			}
-		case "inputs", "plugins":
-			for pluginName, pluginVal := range subTable.Fields {
-				switch pluginSubTable := pluginVal.(type) {
-				case *ast.Table:
-					if err = c.addInput(pluginName, pluginSubTable); err != nil {
-						return fmt.Errorf("Error parsing %s, %s", path, err)
-					}
-				case []*ast.Table:
-					for _, t := range pluginSubTable {
-						if err = c.addInput(pluginName, t); err != nil {
-							return fmt.Errorf("Error parsing %s, %s", path, err)
-						}
-					}
-				default:
-					return fmt.Errorf("Unsupported config format: %s, file %s",
-						pluginName, path)
-				}
-			}
-		// Assume it's an input input for legacy config file support if no other
-		// identifiers are present
-		default:
-			if err = c.addInput(name, subTable); err != nil {
-				return fmt.Errorf("Error parsing %s, %s", path, err)
-			}
-		}
-	}
-	return nil
-}
-
-// trimBOM trims the Byte-Order-Marks from the beginning of the file.
-// this is for Windows compatability only.
-// see https://github.com/influxdata/telegraf/issues/1378
-func trimBOM(f []byte) []byte {
-	return bytes.TrimPrefix(f, []byte("\xef\xbb\xbf"))
-}
-
-// parseFile loads a TOML configuration from a provided path and
-// returns the AST produced from the TOML parser. When loading the file, it
-// will find environment variables and replace them.
-func parseFile(fpath string) (*ast.Table, error) {
-	contents, err := ioutil.ReadFile(fpath)
-	if err != nil {
-		return nil, err
-	}
-	// ugh windows why
-	contents = trimBOM(contents)
-
-	env_vars := envVarRe.FindAll(contents, -1)
-	for _, env_var := range env_vars {
-		env_val := os.Getenv(strings.TrimPrefix(string(env_var), "$"))
-		if env_val != "" {
-			contents = bytes.Replace(contents, env_var, []byte(env_val), 1)
-		}
-	}
-
-	return toml.Parse(contents)
-}
-
-func (c *Config) addOutput(name string, table *ast.Table) error {
-	if len(c.OutputFilters) > 0 && !sliceContains(name, c.OutputFilters) {
-		return nil
-	}
-	creator, ok := outputs.Outputs[name]
-	if !ok {
-		return fmt.Errorf("Undefined but requested output: %s", name)
-	}
-	output := creator()
-
-	// If the output has a SetSerializer function, then this means it can write
-	// arbitrary types of output, so build the serializer and set it.
-	switch t := output.(type) {
-	case serializers.SerializerOutput:
-		serializer, err := buildSerializer(name, table)
-		if err != nil {
-			return err
-		}
-		t.SetSerializer(serializer)
-	}
-
-	outputConfig, err := buildOutput(name, table)
-	if err != nil {
-		return err
-	}
-
-	if err := config.UnmarshalTable(table, output); err != nil {
-		return err
-	}
-
-	ro := models.NewRunningOutput(name, output, outputConfig,
-		c.Agent.MetricBatchSize, c.Agent.MetricBufferLimit)
-	c.Outputs = append(c.Outputs, ro)
-	return nil
-}
-
-func (c *Config) addInput(name string, table *ast.Table) error {
-	if len(c.InputFilters) > 0 && !sliceContains(name, c.InputFilters) {
-		return nil
-	}
-	// Legacy support renaming io input to diskio
-	if name == "io" {
-		name = "diskio"
-	}
-
-	creator, ok := inputs.Inputs[name]
-	if !ok {
-		return fmt.Errorf("Undefined but requested input: %s", name)
-	}
-	input := creator()
-
-	// If the input has a SetParser function, then this means it can accept
-	// arbitrary types of input, so build the parser and set it.
-	switch t := input.(type) {
-	case parsers.ParserInput:
-		parser, err := buildParser(name, table)
-		if err != nil {
-			return err
-		}
-		t.SetParser(parser)
-	}
-
-	pluginConfig, err := buildInput(name, table)
-	if err != nil {
-		return err
-	}
-
-	if err := config.UnmarshalTable(table, input); err != nil {
-		return err
-	}
-
-	rp := &models.RunningInput{
-		Name:   name,
-		Input:  input,
-		Config: pluginConfig,
-	}
-	c.Inputs = append(c.Inputs, rp)
-	return nil
-}
-
-// buildFilter builds a Filter
-// (tagpass/tagdrop/namepass/namedrop/fieldpass/fielddrop) to
-// be inserted into the models.OutputConfig/models.InputConfig
-// to be used for glob filtering on tags and measurements
-func buildFilter(tbl *ast.Table) (models.Filter, error) {
-	f := models.Filter{}
-
-	if node, ok := tbl.Fields["namepass"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if ary, ok := kv.Value.(*ast.Array); ok {
-				for _, elem := range ary.Value {
-					if str, ok := elem.(*ast.String); ok {
-						f.NamePass = append(f.NamePass, str.Value)
-					}
-				}
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["namedrop"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if ary, ok := kv.Value.(*ast.Array); ok {
-				for _, elem := range ary.Value {
-					if str, ok := elem.(*ast.String); ok {
-						f.NameDrop = append(f.NameDrop, str.Value)
-					}
-				}
-			}
-		}
-	}
-
-	fields := []string{"pass", "fieldpass"}
-	for _, field := range fields {
-		if node, ok := tbl.Fields[field]; ok {
-			if kv, ok := node.(*ast.KeyValue); ok {
-				if ary, ok := kv.Value.(*ast.Array); ok {
-					for _, elem := range ary.Value {
-						if str, ok := elem.(*ast.String); ok {
-							f.FieldPass = append(f.FieldPass, str.Value)
-						}
-					}
-				}
-			}
-		}
-	}
-
-	fields = []string{"drop", "fielddrop"}
-	for _, field := range fields {
-		if node, ok := tbl.Fields[field]; ok {
-			if kv, ok := node.(*ast.KeyValue); ok {
-				if ary, ok := kv.Value.(*ast.Array); ok {
-					for _, elem := range ary.Value {
-						if str, ok := elem.(*ast.String); ok {
-							f.FieldDrop = append(f.FieldDrop, str.Value)
-						}
-					}
-				}
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["tagpass"]; ok {
-		if subtbl, ok := node.(*ast.Table); ok {
-			for name, val := range subtbl.Fields {
-				if kv, ok := val.(*ast.KeyValue); ok {
-					tagfilter := &models.TagFilter{Name: name}
-					if ary, ok := kv.Value.(*ast.Array); ok {
-						for _, elem := range ary.Value {
-							if str, ok := elem.(*ast.String); ok {
-								tagfilter.Filter = append(tagfilter.Filter, str.Value)
-							}
-						}
-					}
-					f.TagPass = append(f.TagPass, *tagfilter)
-				}
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["tagdrop"]; ok {
-		if subtbl, ok := node.(*ast.Table); ok {
-			for name, val := range subtbl.Fields {
-				if kv, ok := val.(*ast.KeyValue); ok {
-					tagfilter := &models.TagFilter{Name: name}
-					if ary, ok := kv.Value.(*ast.Array); ok {
-						for _, elem := range ary.Value {
-							if str, ok := elem.(*ast.String); ok {
-								tagfilter.Filter = append(tagfilter.Filter, str.Value)
-							}
-						}
-					}
-					f.TagDrop = append(f.TagDrop, *tagfilter)
-				}
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["tagexclude"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if ary, ok := kv.Value.(*ast.Array); ok {
-				for _, elem := range ary.Value {
-					if str, ok := elem.(*ast.String); ok {
-						f.TagExclude = append(f.TagExclude, str.Value)
-					}
-				}
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["taginclude"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if ary, ok := kv.Value.(*ast.Array); ok {
-				for _, elem := range ary.Value {
-					if str, ok := elem.(*ast.String); ok {
-						f.TagInclude = append(f.TagInclude, str.Value)
-					}
-				}
-			}
-		}
-	}
-	if err := f.Compile(); err != nil {
-		return f, err
-	}
-
-	delete(tbl.Fields, "namedrop")
-	delete(tbl.Fields, "namepass")
-	delete(tbl.Fields, "fielddrop")
-	delete(tbl.Fields, "fieldpass")
-	delete(tbl.Fields, "drop")
-	delete(tbl.Fields, "pass")
-	delete(tbl.Fields, "tagdrop")
-	delete(tbl.Fields, "tagpass")
-	delete(tbl.Fields, "tagexclude")
-	delete(tbl.Fields, "taginclude")
-	return f, nil
-}
-
-// buildInput parses input specific items from the ast.Table,
-// builds the filter and returns a
-// models.InputConfig to be inserted into models.RunningInput
-func buildInput(name string, tbl *ast.Table) (*models.InputConfig, error) {
-	cp := &models.InputConfig{Name: name}
-	if node, ok := tbl.Fields["interval"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				dur, err := time.ParseDuration(str.Value)
-				if err != nil {
-					return nil, err
-				}
-
-				cp.Interval = dur
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["name_prefix"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				cp.MeasurementPrefix = str.Value
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["name_suffix"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				cp.MeasurementSuffix = str.Value
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["name_override"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				cp.NameOverride = str.Value
-			}
-		}
-	}
-
-	cp.Tags = make(map[string]string)
-	if node, ok := tbl.Fields["tags"]; ok {
-		if subtbl, ok := node.(*ast.Table); ok {
-			if err := config.UnmarshalTable(subtbl, cp.Tags); err != nil {
-				log.Printf("E! Could not parse tags for input %s\n", name)
-			}
-		}
-	}
-
-	delete(tbl.Fields, "name_prefix")
-	delete(tbl.Fields, "name_suffix")
-	delete(tbl.Fields, "name_override")
-	delete(tbl.Fields, "interval")
-	delete(tbl.Fields, "tags")
-	var err error
-	cp.Filter, err = buildFilter(tbl)
-	if err != nil {
-		return cp, err
-	}
-	return cp, nil
-}
-
-// buildParser grabs the necessary entries from the ast.Table for creating
-// a parsers.Parser object, and creates it, which can then be added onto
-// an Input object.
-func buildParser(name string, tbl *ast.Table) (parsers.Parser, error) {
-	c := &parsers.Config{}
-
-	if node, ok := tbl.Fields["data_format"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				c.DataFormat = str.Value
-			}
-		}
-	}
-
-	// Legacy support, exec plugin originally parsed JSON by default.
-	if name == "exec" && c.DataFormat == "" {
-		c.DataFormat = "json"
-	} else if c.DataFormat == "" {
-		c.DataFormat = "influx"
-	}
-
-	if node, ok := tbl.Fields["separator"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				c.Separator = str.Value
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["templates"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if ary, ok := kv.Value.(*ast.Array); ok {
-				for _, elem := range ary.Value {
-					if str, ok := elem.(*ast.String); ok {
-						c.Templates = append(c.Templates, str.Value)
-					}
-				}
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["tag_keys"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if ary, ok := kv.Value.(*ast.Array); ok {
-				for _, elem := range ary.Value {
-					if str, ok := elem.(*ast.String); ok {
-						c.TagKeys = append(c.TagKeys, str.Value)
-					}
-				}
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["data_type"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				c.DataType = str.Value
-			}
-		}
-	}
-
-	c.MetricName = name
-
-	delete(tbl.Fields, "data_format")
-	delete(tbl.Fields, "separator")
-	delete(tbl.Fields, "templates")
-	delete(tbl.Fields, "tag_keys")
-	delete(tbl.Fields, "data_type")
-
-	return parsers.NewParser(c)
-}
-
-// buildSerializer grabs the necessary entries from the ast.Table for creating
-// a serializers.Serializer object, and creates it, which can then be added onto
-// an Output object.
-func buildSerializer(name string, tbl *ast.Table) (serializers.Serializer, error) {
-	c := &serializers.Config{}
-
-	if node, ok := tbl.Fields["data_format"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				c.DataFormat = str.Value
-			}
-		}
-	}
-
-	if c.DataFormat == "" {
-		c.DataFormat = "influx"
-	}
-
-	if node, ok := tbl.Fields["prefix"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				c.Prefix = str.Value
-			}
-		}
-	}
-
-	if node, ok := tbl.Fields["template"]; ok {
-		if kv, ok := node.(*ast.KeyValue); ok {
-			if str, ok := kv.Value.(*ast.String); ok {
-				c.Template = str.Value
-			}
-		}
-	}
-
-	delete(tbl.Fields, "data_format")
-	delete(tbl.Fields, "prefix")
-	delete(tbl.Fields, "template")
-	return serializers.NewSerializer(c)
-}
-
-// buildOutput parses output specific items from the ast.Table,
-// builds the filter and returns an
-// models.OutputConfig to be inserted into models.RunningInput
-// Note: error exists in the return for future calls that might require error
-func buildOutput(name string, tbl *ast.Table) (*models.OutputConfig, error) {
-	filter, err := buildFilter(tbl)
-	if err != nil {
-		return nil, err
-	}
-	oc := &models.OutputConfig{
-		Name:   name,
-		Filter: filter,
-	}
-	// Outputs don't support FieldDrop/FieldPass, so set to NameDrop/NamePass
-	if len(oc.Filter.FieldDrop) > 0 {
-		oc.Filter.NameDrop = oc.Filter.FieldDrop
-	}
-	if len(oc.Filter.FieldPass) > 0 {
-		oc.Filter.NamePass = oc.Filter.FieldPass
-	}
-	return oc, nil
-}

internal/content_coding.go

@@ -0,0 +1,182 @@
+package internal
+
+import (
+	"bufio"
+	"bytes"
+	"compress/gzip"
+	"errors"
+	"io"
+)
+
+// NewStreamContentDecoder returns a reader that will decode the stream
+// according to the encoding type.
+func NewStreamContentDecoder(encoding string, r io.Reader) (io.Reader, error) {
+	switch encoding {
+	case "gzip":
+		return NewGzipReader(r)
+	case "identity", "":
+		return r, nil
+	default:
+		return nil, errors.New("invalid value for content_encoding")
+	}
+}
+
+// GzipReader is similar to gzip.Reader but reads only a single gzip stream per read.
+type GzipReader struct {
+	r           io.Reader
+	z           *gzip.Reader
+	endOfStream bool
+}
+
+func NewGzipReader(r io.Reader) (io.Reader, error) {
+	// We need a read that implements ByteReader in order to line up the next
+	// stream.
+	br := bufio.NewReader(r)
+
+	// Reads the first gzip stream header.
+	z, err := gzip.NewReader(br)
+	if err != nil {
+		return nil, err
+	}
+
+	// Prevent future calls to Read from reading the following gzip header.
+	z.Multistream(false)
+
+	return &GzipReader{r: br, z: z}, nil
+}
+
+func (r *GzipReader) Read(b []byte) (int, error) {
+	if r.endOfStream {
+		// Reads the next gzip header and prepares for the next stream.
+		err := r.z.Reset(r.r)
+		if err != nil {
+			return 0, err
+		}
+		r.z.Multistream(false)
+		r.endOfStream = false
+	}
+
+	n, err := r.z.Read(b)
+
+	// Since multistream is disabled, io.EOF indicates the end of the gzip
+	// sequence.  On the next read we must read the next gzip header.
+	if err == io.EOF {
+		r.endOfStream = true
+		return n, nil
+	}
+	return n, err
+
+}
+
+// NewContentEncoder returns a ContentEncoder for the encoding type.
+func NewContentEncoder(encoding string) (ContentEncoder, error) {
+	switch encoding {
+	case "gzip":
+		return NewGzipEncoder()
+	case "identity", "":
+		return NewIdentityEncoder(), nil
+	default:
+		return nil, errors.New("invalid value for content_encoding")
+	}
+}
+
+// NewContentDecoder returns a ContentDecoder for the encoding type.
+func NewContentDecoder(encoding string) (ContentDecoder, error) {
+	switch encoding {
+	case "gzip":
+		return NewGzipDecoder()
+	case "identity", "":
+		return NewIdentityDecoder(), nil
+	default:
+		return nil, errors.New("invalid value for content_encoding")
+	}
+}
+
+// ContentEncoder applies a wrapper encoding to byte buffers.
+type ContentEncoder interface {
+	Encode([]byte) ([]byte, error)
+}
+
+// GzipEncoder compresses the buffer using gzip at the default level.
+type GzipEncoder struct {
+	writer *gzip.Writer
+	buf    *bytes.Buffer
+}
+
+func NewGzipEncoder() (*GzipEncoder, error) {
+	var buf bytes.Buffer
+	return &GzipEncoder{
+		writer: gzip.NewWriter(&buf),
+		buf:    &buf,
+	}, nil
+}
+
+func (e *GzipEncoder) Encode(data []byte) ([]byte, error) {
+	e.buf.Reset()
+	e.writer.Reset(e.buf)
+
+	_, err := e.writer.Write(data)
+	if err != nil {
+		return nil, err
+	}
+	err = e.writer.Close()
+	if err != nil {
+		return nil, err
+	}
+	return e.buf.Bytes(), nil
+}
+
+// IdentityEncoder is a null encoder that applies no transformation.
+type IdentityEncoder struct{}
+
+func NewIdentityEncoder() *IdentityEncoder {
+	return &IdentityEncoder{}
+}
+
+func (*IdentityEncoder) Encode(data []byte) ([]byte, error) {
+	return data, nil
+}
+
+// ContentDecoder removes a wrapper encoding from byte buffers.
+type ContentDecoder interface {
+	Decode([]byte) ([]byte, error)
+}
+
+// GzipDecoder decompresses buffers with gzip compression.
+type GzipDecoder struct {
+	reader *gzip.Reader
+	buf    *bytes.Buffer
+}
+
+func NewGzipDecoder() (*GzipDecoder, error) {
+	return &GzipDecoder{
+		reader: new(gzip.Reader),
+		buf:    new(bytes.Buffer),
+	}, nil
+}
+
+func (d *GzipDecoder) Decode(data []byte) ([]byte, error) {
+	d.reader.Reset(bytes.NewBuffer(data))
+	d.buf.Reset()
+
+	_, err := d.buf.ReadFrom(d.reader)
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	err = d.reader.Close()
+	if err != nil {
+		return nil, err
+	}
+	return d.buf.Bytes(), nil
+}
+
+// IdentityDecoder is a null decoder that returns the input.
+type IdentityDecoder struct{}
+
+func NewIdentityDecoder() *IdentityDecoder {
+	return &IdentityDecoder{}
+}
+
+func (*IdentityDecoder) Decode(data []byte) ([]byte, error) {
+	return data, nil
+}

internal/content_coding_test.go

@@ -0,0 +1,94 @@
+package internal
+
+import (
+	"bytes"
+	"io/ioutil"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGzipEncodeDecode(t *testing.T) {
+	enc, err := NewGzipEncoder()
+	require.NoError(t, err)
+	dec, err := NewGzipDecoder()
+	require.NoError(t, err)
+
+	payload, err := enc.Encode([]byte("howdy"))
+	require.NoError(t, err)
+
+	actual, err := dec.Decode(payload)
+	require.NoError(t, err)
+
+	require.Equal(t, "howdy", string(actual))
+}
+
+func TestGzipReuse(t *testing.T) {
+	enc, err := NewGzipEncoder()
+	require.NoError(t, err)
+	dec, err := NewGzipDecoder()
+	require.NoError(t, err)
+
+	payload, err := enc.Encode([]byte("howdy"))
+	require.NoError(t, err)
+
+	actual, err := dec.Decode(payload)
+	require.NoError(t, err)
+
+	require.Equal(t, "howdy", string(actual))
+
+	payload, err = enc.Encode([]byte("doody"))
+	require.NoError(t, err)
+
+	actual, err = dec.Decode(payload)
+	require.NoError(t, err)
+
+	require.Equal(t, "doody", string(actual))
+}
+
+func TestIdentityEncodeDecode(t *testing.T) {
+	enc := NewIdentityEncoder()
+	dec := NewIdentityDecoder()
+
+	payload, err := enc.Encode([]byte("howdy"))
+	require.NoError(t, err)
+
+	actual, err := dec.Decode(payload)
+	require.NoError(t, err)
+
+	require.Equal(t, "howdy", string(actual))
+}
+
+func TestStreamIdentityDecode(t *testing.T) {
+	var r bytes.Buffer
+	n, err := r.Write([]byte("howdy"))
+	require.NoError(t, err)
+	require.Equal(t, 5, n)
+
+	dec, err := NewStreamContentDecoder("identity", &r)
+	require.NoError(t, err)
+
+	data, err := ioutil.ReadAll(dec)
+	require.NoError(t, err)
+
+	require.Equal(t, []byte("howdy"), data)
+}
+
+func TestStreamGzipDecode(t *testing.T) {
+	enc, err := NewGzipEncoder()
+	require.NoError(t, err)
+	written, err := enc.Encode([]byte("howdy"))
+	require.NoError(t, err)
+
+	w := bytes.NewBuffer(written)
+
+	dec, err := NewStreamContentDecoder("gzip", w)
+	require.NoError(t, err)
+
+	b := make([]byte, 10)
+	n, err := dec.Read(b)
+	require.NoError(t, err)
+	require.Equal(t, 5, n)
+
+	require.Equal(t, []byte("howdy"), b[:n])
+}

internal/docker/docker.go

@@ -0,0 +1,36 @@
+package docker
+
+import "strings"
+
+// Adapts some of the logic from the actual Docker library's image parsing
+// routines:
+// https://github.com/docker/distribution/blob/release/2.7/reference/normalize.go
+func ParseImage(image string) (string, string) {
+	domain := ""
+	remainder := ""
+
+	i := strings.IndexRune(image, '/')
+
+	if i == -1 || (!strings.ContainsAny(image[:i], ".:") && image[:i] != "localhost") {
+		remainder = image
+	} else {
+		domain, remainder = image[:i], image[i+1:]
+	}
+
+	imageName := ""
+	imageVersion := "unknown"
+
+	i = strings.LastIndex(remainder, ":")
+	if i > -1 {
+		imageVersion = remainder[i+1:]
+		imageName = remainder[:i]
+	} else {
+		imageName = remainder
+	}
+
+	if domain != "" {
+		imageName = domain + "/" + imageName
+	}
+
+	return imageName, imageVersion
+}

internal/docker/docker_test.go

@@ -0,0 +1,59 @@
+package docker_test
+
+import (
+	"testing"
+
+	"github.com/influxdata/telegraf/internal/docker"
+	"github.com/stretchr/testify/require"
+)
+
+func TestParseImage(t *testing.T) {
+	tests := []struct {
+		image         string
+		parsedName    string
+		parsedVersion string
+	}{
+		{
+			image:         "postgres",
+			parsedName:    "postgres",
+			parsedVersion: "unknown",
+		},
+		{
+			image:         "postgres:latest",
+			parsedName:    "postgres",
+			parsedVersion: "latest",
+		},
+		{
+			image:         "coreos/etcd",
+			parsedName:    "coreos/etcd",
+			parsedVersion: "unknown",
+		},
+		{
+			image:         "coreos/etcd:latest",
+			parsedName:    "coreos/etcd",
+			parsedVersion: "latest",
+		},
+		{
+			image:         "quay.io/postgres",
+			parsedName:    "quay.io/postgres",
+			parsedVersion: "unknown",
+		},
+		{
+			image:         "quay.io:4443/coreos/etcd",
+			parsedName:    "quay.io:4443/coreos/etcd",
+			parsedVersion: "unknown",
+		},
+		{
+			image:         "quay.io:4443/coreos/etcd:latest",
+			parsedName:    "quay.io:4443/coreos/etcd",
+			parsedVersion: "latest",
+		},
+	}
+	for _, tt := range tests {
+		t.Run("parse name "+tt.image, func(t *testing.T) {
+			imageName, imageVersion := docker.ParseImage(tt.image)
+			require.Equal(t, tt.parsedName, imageName)
+			require.Equal(t, tt.parsedVersion, imageVersion)
+		})
+	}
+}

internal/errchan/errchan.go

@@ -1,37 +0,0 @@
-package errchan
-
-import (
-	"fmt"
-	"strings"
-)
-
-type ErrChan struct {
-	C chan error
-}
-
-// New returns an error channel of max length 'n'
-// errors can be sent to the ErrChan.C channel, and will be returned when
-// ErrChan.Error() is called.
-func New(n int) *ErrChan {
-	return &ErrChan{
-		C: make(chan error, n),
-	}
-}
-
-// Error closes the ErrChan.C channel and returns an error if there are any
-// non-nil errors, otherwise returns nil.
-func (e *ErrChan) Error() error {
-	close(e.C)
-
-	var out string
-	for err := range e.C {
-		if err != nil {
-			out += "[" + err.Error() + "], "
-		}
-	}
-
-	if out != "" {
-		return fmt.Errorf("Errors encountered: " + strings.TrimRight(out, ", "))
-	}
-	return nil
-}

internal/exec.go

@@ -0,0 +1,30 @@
+package internal
+
+import (
+	"bytes"
+	"os/exec"
+	"time"
+)
+
+// CombinedOutputTimeout runs the given command with the given timeout and
+// returns the combined output of stdout and stderr.
+// If the command times out, it attempts to kill the process.
+func CombinedOutputTimeout(c *exec.Cmd, timeout time.Duration) ([]byte, error) {
+	var b bytes.Buffer
+	c.Stdout = &b
+	c.Stderr = &b
+	if err := c.Start(); err != nil {
+		return nil, err
+	}
+	err := WaitTimeout(c, timeout)
+	return b.Bytes(), err
+}
+
+// RunTimeout runs the given command with the given timeout.
+// If the command times out, it attempts to kill the process.
+func RunTimeout(c *exec.Cmd, timeout time.Duration) error {
+	if err := c.Start(); err != nil {
+		return err
+	}
+	return WaitTimeout(c, timeout)
+}

internal/exec_unix.go

@@ -0,0 +1,58 @@
+// +build !windows
+
+package internal
+
+import (
+	"log"
+	"os/exec"
+	"syscall"
+	"time"
+)
+
+// KillGrace is the amount of time we allow a process to shutdown before
+// sending a SIGKILL.
+const KillGrace = 5 * time.Second
+
+// WaitTimeout waits for the given command to finish with a timeout.
+// It assumes the command has already been started.
+// If the command times out, it attempts to kill the process.
+func WaitTimeout(c *exec.Cmd, timeout time.Duration) error {
+	var kill *time.Timer
+	term := time.AfterFunc(timeout, func() {
+		err := c.Process.Signal(syscall.SIGTERM)
+		if err != nil {
+			log.Printf("E! [agent] Error terminating process: %s", err)
+			return
+		}
+
+		kill = time.AfterFunc(KillGrace, func() {
+			err := c.Process.Kill()
+			if err != nil {
+				log.Printf("E! [agent] Error killing process: %s", err)
+				return
+			}
+		})
+	})
+
+	err := c.Wait()
+
+	// Shutdown all timers
+	if kill != nil {
+		kill.Stop()
+	}
+	termSent := !term.Stop()
+
+	// If the process exited without error treat it as success.  This allows a
+	// process to do a clean shutdown on signal.
+	if err == nil {
+		return nil
+	}
+
+	// If SIGTERM was sent then treat any process error as a timeout.
+	if termSent {
+		return TimeoutErr
+	}
+
+	// Otherwise there was an error unrelated to termination.
+	return err
+}

internal/exec_windows.go

@@ -0,0 +1,41 @@
+// +build windows
+
+package internal
+
+import (
+	"log"
+	"os/exec"
+	"time"
+)
+
+// WaitTimeout waits for the given command to finish with a timeout.
+// It assumes the command has already been started.
+// If the command times out, it attempts to kill the process.
+func WaitTimeout(c *exec.Cmd, timeout time.Duration) error {
+	timer := time.AfterFunc(timeout, func() {
+		err := c.Process.Kill()
+		if err != nil {
+			log.Printf("E! [agent] Error killing process: %s", err)
+			return
+		}
+	})
+
+	err := c.Wait()
+
+	// Shutdown all timers
+	termSent := !timer.Stop()
+
+	// If the process exited without error treat it as success.  This allows a
+	// process to do a clean shutdown on signal.
+	if err == nil {
+		return nil
+	}
+
+	// If SIGTERM was sent then treat any process error as a timeout.
+	if termSent {
+		return TimeoutErr
+	}
+
+	// Otherwise there was an error unrelated to termination.
+	return err
+}

internal/globpath/globpath.go

@@ -1,110 +1,116 @@
 package globpath
 
 import (
-	"fmt"
 	"os"
 	"path/filepath"
 	"strings"
 
 	"github.com/gobwas/glob"
+	"github.com/karrick/godirwalk"
 )
 
-var sepStr = fmt.Sprintf("%v", string(os.PathSeparator))
-
 type GlobPath struct {
 	path         string
 	hasMeta      bool
-	hasSuperMeta bool
+	HasSuperMeta bool
+	rootGlob     string
 	g            glob.Glob
-	root         string
 }
 
 func Compile(path string) (*GlobPath, error) {
 	out := GlobPath{
 		hasMeta:      hasMeta(path),
-		hasSuperMeta: hasSuperMeta(path),
+		HasSuperMeta: hasSuperMeta(path),
-		path:         path,
+		path:         filepath.FromSlash(path),
 	}
 
 	// if there are no glob meta characters in the path, don't bother compiling
-	// a glob object or finding the root directory. (see short-circuit in Match)
+	// a glob object
-	if !out.hasMeta || !out.hasSuperMeta {
+	if !out.hasMeta || !out.HasSuperMeta {
 		return &out, nil
 	}
 
+	// find the root elements of the object path, the entry point for recursion
+	// when you have a super-meta in your path (which are :
+	// glob(/your/expression/until/first/star/of/super-meta))
+	out.rootGlob = path[:strings.Index(path, "**")+1]
 	var err error
 	if out.g, err = glob.Compile(path, os.PathSeparator); err != nil {
 		return nil, err
 	}
-	// Get the root directory for this filepath
-	out.root = findRootDir(path)
 	return &out, nil
 }
 
-func (g *GlobPath) Match() map[string]os.FileInfo {
+// Match returns all files matching the expression.
+// If it's a static path, returns path.
+// All returned path will have the host platform separator.
+func (g *GlobPath) Match() []string {
 	if !g.hasMeta {
-		out := make(map[string]os.FileInfo)
+		return []string{g.path}
-		info, err := os.Stat(g.path)
-		if !os.IsNotExist(err) {
-			out[g.path] = info
-		}
-		return out
 	}
-	if !g.hasSuperMeta {
+	if !g.HasSuperMeta {
-		out := make(map[string]os.FileInfo)
 		files, _ := filepath.Glob(g.path)
-		for _, file := range files {
+		return files
-			info, err := os.Stat(file)
-			if !os.IsNotExist(err) {
-				out[file] = info
-			}
-		}
-		return out
 	}
-	return walkFilePath(g.root, g.g)
+	roots, err := filepath.Glob(g.rootGlob)
-}
+	if err != nil {
-
+		return []string{}
-// walk the filepath from the given root and return a list of files that match
+	}
-// the given glob.
+	out := []string{}
-func walkFilePath(root string, g glob.Glob) map[string]os.FileInfo {
+	walkfn := func(path string, _ *godirwalk.Dirent) error {
-	matchedFiles := make(map[string]os.FileInfo)
+		if g.g.Match(path) {
-	walkfn := func(path string, info os.FileInfo, _ error) error {
+			out = append(out, path)
-		if g.Match(path) {
-			matchedFiles[path] = info
 		}
 		return nil
-	}
-	filepath.Walk(root, walkfn)
-	return matchedFiles
-}
 
-// find the root dir of the given path (could include globs).
+	}
-// ie:
+	for _, root := range roots {
-//   /var/log/telegraf.conf -> /var/log
+		fileinfo, err := os.Stat(root)
-//   /home/** ->               /home
+		if err != nil {
-//   /home/*/** ->             /home
-//   /lib/share/*/*/**.txt ->  /lib/share
-func findRootDir(path string) string {
-	pathItems := strings.Split(path, sepStr)
-	out := sepStr
-	for i, item := range pathItems {
-		if i == len(pathItems)-1 {
-			break
-		}
-		if item == "" {
 			continue
 		}
-		if hasMeta(item) {
+		if !fileinfo.IsDir() {
-			break
+			if g.MatchString(root) {
+				out = append(out, root)
+			}
+			continue
 		}
-		out += item + sepStr
+		godirwalk.Walk(root, &godirwalk.Options{
-	}
+			Callback: walkfn,
-	if out != "/" {
+			Unsorted: true,
-		out = strings.TrimSuffix(out, "/")
+		})
 	}
 	return out
 }
 
+// MatchString tests the path string against the glob.  The path should contain
+// the host platform separator.
+func (g *GlobPath) MatchString(path string) bool {
+	if !g.HasSuperMeta {
+		res, _ := filepath.Match(g.path, path)
+		return res
+	}
+	return g.g.Match(path)
+}
+
+// GetRoots returns a list of files and directories which should be optimal
+// prefixes of matching files when you have a super-meta in your expression :
+// - any directory under these roots may contain a matching file
+// - no file outside of these roots can match the pattern
+// Note that it returns both files and directories.
+// All returned path will have the host platform separator.
+func (g *GlobPath) GetRoots() []string {
+	if !g.hasMeta {
+		return []string{g.path}
+	}
+	if !g.HasSuperMeta {
+		matches, _ := filepath.Glob(g.path)
+		return matches
+	}
+	roots, _ := filepath.Glob(g.rootGlob)
+	return roots
+}
+
 // hasMeta reports whether path contains any magic glob characters.
 func hasMeta(path string) bool {
 	return strings.IndexAny(path, "*?[") >= 0

internal/globpath/globpath_test.go

@@ -5,7 +5,6 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
@@ -28,35 +27,74 @@ func TestCompileAndMatch(t *testing.T) {
 	require.NoError(t, err)
 
 	matches := g1.Match()
-	assert.Len(t, matches, 3)
+	require.Len(t, matches, 6)
 	matches = g2.Match()
-	assert.Len(t, matches, 2)
+	require.Len(t, matches, 2)
 	matches = g3.Match()
-	assert.Len(t, matches, 1)
+	require.Len(t, matches, 1)
 	matches = g4.Match()
-	assert.Len(t, matches, 0)
+	require.Len(t, matches, 1)
 	matches = g5.Match()
-	assert.Len(t, matches, 0)
+	require.Len(t, matches, 0)
 }
 
-func TestFindRootDir(t *testing.T) {
+func TestRootGlob(t *testing.T) {
+	dir := getTestdataDir()
 	tests := []struct {
 		input  string
 		output string
 	}{
-		{"/var/log/telegraf.conf", "/var/log"},
+		{dir + "/**", dir + "/*"},
-		{"/home/**", "/home"},
+		{dir + "/nested?/**", dir + "/nested?/*"},
-		{"/home/*/**", "/home"},
+		{dir + "/ne**/nest*", dir + "/ne*"},
-		{"/lib/share/*/*/**.txt", "/lib/share"},
+		{dir + "/nested?/*", ""},
 	}
 
 	for _, test := range tests {
-		actual := findRootDir(test.input)
+		actual, _ := Compile(test.input)
-		assert.Equal(t, test.output, actual)
+		require.Equal(t, actual.rootGlob, test.output)
 	}
 }
 
+func TestFindNestedTextFile(t *testing.T) {
+	dir := getTestdataDir()
+	// test super asterisk
+	g1, err := Compile(dir + "/**.txt")
+	require.NoError(t, err)
+
+	matches := g1.Match()
+	require.Len(t, matches, 1)
+}
+
 func getTestdataDir() string {
 	_, filename, _, _ := runtime.Caller(1)
 	return strings.Replace(filename, "globpath_test.go", "testdata", 1)
 }
+
+func TestMatch_ErrPermission(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected []string
+	}{
+		{"/root/foo", []string{"/root/foo"}},
+		{"/root/f*", []string(nil)},
+	}
+
+	for _, test := range tests {
+		glob, err := Compile(test.input)
+		require.NoError(t, err)
+		actual := glob.Match()
+		require.Equal(t, test.expected, actual)
+	}
+}
+
+func TestWindowsSeparator(t *testing.T) {
+	if runtime.GOOS != "windows" {
+		t.Skip("Skipping Windows only test")
+	}
+
+	glob, err := Compile("testdata/nested1")
+	require.NoError(t, err)
+	ok := glob.MatchString("testdata\\nested1")
+	require.True(t, ok)
+}

internal/goplugin/noplugin.go

@@ -0,0 +1,9 @@
+// +build !goplugin
+
+package goplugin
+
+import "errors"
+
+func LoadExternalPlugins(rootDir string) error {
+	return errors.New("go plugin support is not enabled")
+}

internal/goplugin/plugin.go

@@ -0,0 +1,42 @@
+// +build goplugin
+
+package goplugin
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"plugin"
+	"strings"
+)
+
+// loadExternalPlugins loads external plugins from shared libraries (.so, .dll, etc.)
+// in the specified directory.
+func LoadExternalPlugins(rootDir string) error {
+	return filepath.Walk(rootDir, func(pth string, info os.FileInfo, err error) error {
+		// Stop if there was an error.
+		if err != nil {
+			return err
+		}
+
+		// Ignore directories.
+		if info.IsDir() {
+			return nil
+		}
+
+		// Ignore files that aren't shared libraries.
+		ext := strings.ToLower(path.Ext(pth))
+		if ext != ".so" && ext != ".dll" {
+			return nil
+		}
+
+		// Load plugin.
+		_, err = plugin.Open(pth)
+		if err != nil {
+			return fmt.Errorf("error loading %s: %s", pth, err)
+		}
+
+		return nil
+	})
+}

internal/http.go

@@ -0,0 +1,108 @@
+package internal
+
+import (
+	"crypto/subtle"
+	"net"
+	"net/http"
+	"net/url"
+)
+
+type BasicAuthErrorFunc func(rw http.ResponseWriter)
+
+// AuthHandler returns a http handler that requires HTTP basic auth
+// credentials to match the given username and password.
+func AuthHandler(username, password, realm string, onError BasicAuthErrorFunc) func(h http.Handler) http.Handler {
+	return func(h http.Handler) http.Handler {
+		return &basicAuthHandler{
+			username: username,
+			password: password,
+			realm:    realm,
+			onError:  onError,
+			next:     h,
+		}
+	}
+}
+
+type basicAuthHandler struct {
+	username string
+	password string
+	realm    string
+	onError  BasicAuthErrorFunc
+	next     http.Handler
+}
+
+func (h *basicAuthHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	if h.username != "" || h.password != "" {
+		reqUsername, reqPassword, ok := req.BasicAuth()
+		if !ok ||
+			subtle.ConstantTimeCompare([]byte(reqUsername), []byte(h.username)) != 1 ||
+			subtle.ConstantTimeCompare([]byte(reqPassword), []byte(h.password)) != 1 {
+
+			rw.Header().Set("WWW-Authenticate", "Basic realm=\""+h.realm+"\"")
+			h.onError(rw)
+			http.Error(rw, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
+			return
+		}
+	}
+
+	h.next.ServeHTTP(rw, req)
+}
+
+// ErrorFunc is a callback for writing an error response.
+type ErrorFunc func(rw http.ResponseWriter, code int)
+
+// IPRangeHandler returns a http handler that requires the remote address to be
+// in the specified network.
+func IPRangeHandler(network []*net.IPNet, onError ErrorFunc) func(h http.Handler) http.Handler {
+	return func(h http.Handler) http.Handler {
+		return &ipRangeHandler{
+			network: network,
+			onError: onError,
+			next:    h,
+		}
+	}
+}
+
+type ipRangeHandler struct {
+	network []*net.IPNet
+	onError ErrorFunc
+	next    http.Handler
+}
+
+func (h *ipRangeHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	if len(h.network) == 0 {
+		h.next.ServeHTTP(rw, req)
+		return
+	}
+
+	remoteIPString, _, err := net.SplitHostPort(req.RemoteAddr)
+	if err != nil {
+		h.onError(rw, http.StatusForbidden)
+		return
+	}
+
+	remoteIP := net.ParseIP(remoteIPString)
+	if remoteIP == nil {
+		h.onError(rw, http.StatusForbidden)
+		return
+	}
+
+	for _, net := range h.network {
+		if net.Contains(remoteIP) {
+			h.next.ServeHTTP(rw, req)
+			return
+		}
+	}
+
+	h.onError(rw, http.StatusForbidden)
+}
+
+func OnClientError(client *http.Client, err error) {
+	// Close connection after a timeout error. If this is a HTTP2
+	// connection this ensures that next interval a new connection will be
+	// used and name lookup will be performed.
+	//   https://github.com/golang/go/issues/36026
+	if err, ok := err.(*url.Error); ok && err.Timeout() {
+		client.CloseIdleConnections()
+	}
+}

internal/internal.go

@@ -3,20 +3,24 @@ package internal
 import (
 	"bufio"
 	"bytes"
-	"crypto/rand"
+	"compress/gzip"
-	"crypto/tls"
+	"context"
-	"crypto/x509"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
-	"log"
+	"math"
-	"math/big"
+	"math/rand"
 	"os"
 	"os/exec"
+	"runtime"
 	"strconv"
 	"strings"
+	"sync"
+	"syscall"
 	"time"
 	"unicode"
+
+	"github.com/alecthomas/units"
 )
 
 const alphanum string = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
@@ -25,22 +29,71 @@ var (
 	TimeoutErr = errors.New("Command timed out.")
 
 	NotImplementedError = errors.New("not implemented yet")
+
+	VersionAlreadySetError = errors.New("version has already been set")
 )
 
+// Set via the main module
+var version string
+
 // Duration just wraps time.Duration
 type Duration struct {
 	Duration time.Duration
 }
 
+// Size just wraps an int64
+type Size struct {
+	Size int64
+}
+
+type Number struct {
+	Value float64
+}
+
+type ReadWaitCloser struct {
+	pipeReader *io.PipeReader
+	wg         sync.WaitGroup
+}
+
+// SetVersion sets the telegraf agent version
+func SetVersion(v string) error {
+	if version != "" {
+		return VersionAlreadySetError
+	}
+	version = v
+	return nil
+}
+
+// Version returns the telegraf agent version
+func Version() string {
+	return version
+}
+
+// ProductToken returns a tag for Telegraf that can be used in user agents.
+func ProductToken() string {
+	return fmt.Sprintf("Telegraf/%s Go/%s",
+		Version(), strings.TrimPrefix(runtime.Version(), "go"))
+}
+
 // UnmarshalTOML parses the duration from the TOML config file
 func (d *Duration) UnmarshalTOML(b []byte) error {
 	var err error
-	// Parse string duration, ie, "1s"
+	b = bytes.Trim(b, `'`)
-	d.Duration, err = time.ParseDuration(string(b[1 : len(b)-1]))
+
+	// see if we can directly convert it
+	d.Duration, err = time.ParseDuration(string(b))
 	if err == nil {
 		return nil
 	}
 
+	// Parse string duration, ie, "1s"
+	if uq, err := strconv.Unquote(string(b)); err == nil && len(uq) > 0 {
+		d.Duration, err = time.ParseDuration(uq)
+		if err == nil {
+			return nil
+		}
+	}
+
 	// First try parsing as integer seconds
 	sI, err := strconv.ParseInt(string(b), 10, 64)
 	if err == nil {
@@ -57,6 +110,37 @@ func (d *Duration) UnmarshalTOML(b []byte) error {
 	return nil
 }
 
+func (s *Size) UnmarshalTOML(b []byte) error {
+	var err error
+	b = bytes.Trim(b, `'`)
+
+	val, err := strconv.ParseInt(string(b), 10, 64)
+	if err == nil {
+		s.Size = val
+		return nil
+	}
+	uq, err := strconv.Unquote(string(b))
+	if err != nil {
+		return err
+	}
+	val, err = units.ParseStrictBytes(uq)
+	if err != nil {
+		return err
+	}
+	s.Size = val
+	return nil
+}
+
+func (n *Number) UnmarshalTOML(b []byte) error {
+	value, err := strconv.ParseFloat(string(b), 64)
+	if err != nil {
+		return err
+	}
+
+	n.Value = value
+	return nil
+}
+
 // ReadLines reads contents from a file and splits them by new lines.
 // A convenience wrapper to ReadLinesOffsetN(filename, 0, -1).
 func ReadLines(filename string) ([]string, error) {
@@ -102,49 +186,6 @@ func RandomString(n int) string {
 	return string(bytes)
 }
 
-// GetTLSConfig gets a tls.Config object from the given certs, key, and CA files.
-// you must give the full path to the files.
-// If all files are blank and InsecureSkipVerify=false, returns a nil pointer.
-func GetTLSConfig(
-	SSLCert, SSLKey, SSLCA string,
-	InsecureSkipVerify bool,
-) (*tls.Config, error) {
-	if SSLCert == "" && SSLKey == "" && SSLCA == "" && !InsecureSkipVerify {
-		return nil, nil
-	}
-
-	t := &tls.Config{
-		InsecureSkipVerify: InsecureSkipVerify,
-	}
-
-	if SSLCA != "" {
-		caCert, err := ioutil.ReadFile(SSLCA)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf("Could not load TLS CA: %s",
-				err))
-		}
-
-		caCertPool := x509.NewCertPool()
-		caCertPool.AppendCertsFromPEM(caCert)
-		t.RootCAs = caCertPool
-	}
-
-	if SSLCert != "" && SSLKey != "" {
-		cert, err := tls.LoadX509KeyPair(SSLCert, SSLKey)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf(
-				"Could not load TLS client key/certificate from %s:%s: %s",
-				SSLKey, SSLCert, err))
-		}
-
-		t.Certificates = []tls.Certificate{cert}
-		t.BuildNameToCertificate()
-	}
-
-	// will be nil by default if nothing is provided
-	return t, nil
-}
-
 // SnakeCase converts the given string to snake case following the Golang format:
 // acronyms are converted to lower-case and preceded by an underscore.
 func SnakeCase(in string) string {
@@ -162,51 +203,6 @@ func SnakeCase(in string) string {
 	return string(out)
 }
 
-// CombinedOutputTimeout runs the given command with the given timeout and
-// returns the combined output of stdout and stderr.
-// If the command times out, it attempts to kill the process.
-func CombinedOutputTimeout(c *exec.Cmd, timeout time.Duration) ([]byte, error) {
-	var b bytes.Buffer
-	c.Stdout = &b
-	c.Stderr = &b
-	if err := c.Start(); err != nil {
-		return nil, err
-	}
-	err := WaitTimeout(c, timeout)
-	return b.Bytes(), err
-}
-
-// RunTimeout runs the given command with the given timeout.
-// If the command times out, it attempts to kill the process.
-func RunTimeout(c *exec.Cmd, timeout time.Duration) error {
-	if err := c.Start(); err != nil {
-		return err
-	}
-	return WaitTimeout(c, timeout)
-}
-
-// WaitTimeout waits for the given command to finish with a timeout.
-// It assumes the command has already been started.
-// If the command times out, it attempts to kill the process.
-func WaitTimeout(c *exec.Cmd, timeout time.Duration) error {
-	timer := time.NewTimer(timeout)
-	done := make(chan error)
-	go func() { done <- c.Wait() }()
-	select {
-	case err := <-done:
-		timer.Stop()
-		return err
-	case <-timer.C:
-		if err := c.Process.Kill(); err != nil {
-			log.Printf("E! FATAL error killing process: %s", err)
-			return err
-		}
-		// wait for the command to return after killing it
-		<-done
-		return TimeoutErr
-	}
-}
-
 // RandomSleep will sleep for a random amount of time up to max.
 // If the shutdown channel is closed, it will return before it has finished
 // sleeping.
@@ -214,12 +210,8 @@ func RandomSleep(max time.Duration, shutdown chan struct{}) {
 	if max == 0 {
 		return
 	}
-	maxSleep := big.NewInt(max.Nanoseconds())
 
-	var sleepns int64
+	sleepns := rand.Int63n(max.Nanoseconds())
-	if j, err := rand.Int(rand.Reader, maxSleep); err == nil {
-		sleepns = j.Int64()
-	}
 
 	t := time.NewTimer(time.Nanosecond * time.Duration(sleepns))
 	select {
@@ -230,3 +222,203 @@ func RandomSleep(max time.Duration, shutdown chan struct{}) {
 		return
 	}
 }
+
+// RandomDuration returns a random duration between 0 and max.
+func RandomDuration(max time.Duration) time.Duration {
+	if max == 0 {
+		return 0
+	}
+
+	sleepns := rand.Int63n(max.Nanoseconds())
+
+	return time.Duration(sleepns)
+}
+
+// SleepContext sleeps until the context is closed or the duration is reached.
+func SleepContext(ctx context.Context, duration time.Duration) error {
+	if duration == 0 {
+		return nil
+	}
+
+	t := time.NewTimer(duration)
+	select {
+	case <-t.C:
+		return nil
+	case <-ctx.Done():
+		t.Stop()
+		return ctx.Err()
+	}
+}
+
+// AlignDuration returns the duration until next aligned interval.
+// If the current time is aligned a 0 duration is returned.
+func AlignDuration(tm time.Time, interval time.Duration) time.Duration {
+	return AlignTime(tm, interval).Sub(tm)
+}
+
+// AlignTime returns the time of the next aligned interval.
+// If the current time is aligned the current time is returned.
+func AlignTime(tm time.Time, interval time.Duration) time.Time {
+	truncated := tm.Truncate(interval)
+	if truncated == tm {
+		return tm
+	}
+	return truncated.Add(interval)
+}
+
+// Exit status takes the error from exec.Command
+// and returns the exit status and true
+// if error is not exit status, will return 0 and false
+func ExitStatus(err error) (int, bool) {
+	if exiterr, ok := err.(*exec.ExitError); ok {
+		if status, ok := exiterr.Sys().(syscall.WaitStatus); ok {
+			return status.ExitStatus(), true
+		}
+	}
+	return 0, false
+}
+
+func (r *ReadWaitCloser) Close() error {
+	err := r.pipeReader.Close()
+	r.wg.Wait() // wait for the gzip goroutine finish
+	return err
+}
+
+// CompressWithGzip takes an io.Reader as input and pipes
+// it through a gzip.Writer returning an io.Reader containing
+// the gzipped data.
+// An error is returned if passing data to the gzip.Writer fails
+func CompressWithGzip(data io.Reader) (io.ReadCloser, error) {
+	pipeReader, pipeWriter := io.Pipe()
+	gzipWriter := gzip.NewWriter(pipeWriter)
+
+	rc := &ReadWaitCloser{
+		pipeReader: pipeReader,
+	}
+
+	rc.wg.Add(1)
+	var err error
+	go func() {
+		_, err = io.Copy(gzipWriter, data)
+		gzipWriter.Close()
+		// subsequent reads from the read half of the pipe will
+		// return no bytes and the error err, or EOF if err is nil.
+		pipeWriter.CloseWithError(err)
+		rc.wg.Done()
+	}()
+
+	return pipeReader, err
+}
+
+// ParseTimestamp parses a Time according to the standard Telegraf options.
+// These are generally displayed in the toml similar to:
+//   json_time_key= "timestamp"
+//   json_time_format = "2006-01-02T15:04:05Z07:00"
+//   json_timezone = "America/Los_Angeles"
+//
+// The format can be one of "unix", "unix_ms", "unix_us", "unix_ns", or a Go
+// time layout suitable for time.Parse.
+//
+// When using the "unix" format, a optional fractional component is allowed.
+// Specific unix time precisions cannot have a fractional component.
+//
+// Unix times may be an int64, float64, or string.  When using a Go format
+// string the timestamp must be a string.
+//
+// The location is a location string suitable for time.LoadLocation.  Unix
+// times do not use the location string, a unix time is always return in the
+// UTC location.
+func ParseTimestamp(format string, timestamp interface{}, location string) (time.Time, error) {
+	switch format {
+	case "unix", "unix_ms", "unix_us", "unix_ns":
+		return parseUnix(format, timestamp)
+	default:
+		if location == "" {
+			location = "UTC"
+		}
+		return parseTime(format, timestamp, location)
+	}
+}
+
+func parseUnix(format string, timestamp interface{}) (time.Time, error) {
+	integer, fractional, err := parseComponents(timestamp)
+	if err != nil {
+		return time.Unix(0, 0), err
+	}
+
+	switch strings.ToLower(format) {
+	case "unix":
+		return time.Unix(integer, fractional).UTC(), nil
+	case "unix_ms":
+		return time.Unix(0, integer*1e6).UTC(), nil
+	case "unix_us":
+		return time.Unix(0, integer*1e3).UTC(), nil
+	case "unix_ns":
+		return time.Unix(0, integer).UTC(), nil
+	default:
+		return time.Unix(0, 0), errors.New("unsupported type")
+	}
+}
+
+// Returns the integers before and after an optional decimal point.  Both '.'
+// and ',' are supported for the decimal point.  The timestamp can be an int64,
+// float64, or string.
+//   ex: "42.5" -> (42, 5, nil)
+func parseComponents(timestamp interface{}) (int64, int64, error) {
+	switch ts := timestamp.(type) {
+	case string:
+		parts := strings.SplitN(ts, ".", 2)
+		if len(parts) == 2 {
+			return parseUnixTimeComponents(parts[0], parts[1])
+		}
+
+		parts = strings.SplitN(ts, ",", 2)
+		if len(parts) == 2 {
+			return parseUnixTimeComponents(parts[0], parts[1])
+		}
+
+		integer, err := strconv.ParseInt(ts, 10, 64)
+		if err != nil {
+			return 0, 0, err
+		}
+		return integer, 0, nil
+	case int64:
+		return ts, 0, nil
+	case float64:
+		integer, fractional := math.Modf(ts)
+		return int64(integer), int64(fractional * 1e9), nil
+	default:
+		return 0, 0, errors.New("unsupported type")
+	}
+}
+
+func parseUnixTimeComponents(first, second string) (int64, int64, error) {
+	integer, err := strconv.ParseInt(first, 10, 64)
+	if err != nil {
+		return 0, 0, err
+	}
+
+	// Convert to nanoseconds, dropping any greater precision.
+	buf := []byte("000000000")
+	copy(buf, second)
+
+	fractional, err := strconv.ParseInt(string(buf), 10, 64)
+	if err != nil {
+		return 0, 0, err
+	}
+	return integer, fractional, nil
+}
+
+// ParseTime parses a string timestamp according to the format string.
+func parseTime(format string, timestamp interface{}, location string) (time.Time, error) {
+	switch ts := timestamp.(type) {
+	case string:
+		loc, err := time.LoadLocation(location)
+		if err != nil {
+			return time.Unix(0, 0), err
+		}
+		return time.ParseInLocation(format, ts, loc)
+	default:
+		return time.Unix(0, 0), errors.New("unsupported type")
+	}
+}

internal/internal_test.go

@@ -1,11 +1,19 @@
 package internal
 
 import (
+	"bytes"
+	"compress/gzip"
+	"crypto/rand"
+	"io"
+	"io/ioutil"
+	"log"
 	"os/exec"
+	"regexp"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 type SnakeTest struct {
@@ -40,9 +48,13 @@ func TestSnakeCase(t *testing.T) {
 var (
 	sleepbin, _ = exec.LookPath("sleep")
 	echobin, _  = exec.LookPath("echo")
+	shell, _    = exec.LookPath("sh")
 )
 
 func TestRunTimeout(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping test due to random failures.")
+	}
 	if sleepbin == "" {
 		t.Skip("'sleep' binary not available on OS, skipping.")
 	}
@@ -56,7 +68,33 @@ func TestRunTimeout(t *testing.T) {
 	assert.True(t, elapsed < time.Millisecond*75)
 }
 
+// Verifies behavior of a command that doesn't get killed.
+func TestRunTimeoutFastExit(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping test due to random failures.")
+	}
+	if echobin == "" {
+		t.Skip("'echo' binary not available on OS, skipping.")
+	}
+	cmd := exec.Command(echobin)
+	start := time.Now()
+	err := RunTimeout(cmd, time.Millisecond*20)
+	buf := &bytes.Buffer{}
+	log.SetOutput(buf)
+	elapsed := time.Since(start)
+
+	require.NoError(t, err)
+	// Verify that command gets killed in 20ms, with some breathing room
+	assert.True(t, elapsed < time.Millisecond*75)
+
+	// Verify "process already finished" log doesn't occur.
+	time.Sleep(time.Millisecond * 75)
+	require.Equal(t, "", buf.String())
+}
+
 func TestCombinedOutputTimeout(t *testing.T) {
+	// TODO: Fix this test
+	t.Skip("Test failing too often, skip for now and revisit later.")
 	if sleepbin == "" {
 		t.Skip("'sleep' binary not available on OS, skipping.")
 	}
@@ -84,13 +122,13 @@ func TestCombinedOutput(t *testing.T) {
 // test that CombinedOutputTimeout and exec.Cmd.CombinedOutput return
 // the same output from a failed command.
 func TestCombinedOutputError(t *testing.T) {
-	if sleepbin == "" {
+	if shell == "" {
-		t.Skip("'sleep' binary not available on OS, skipping.")
+		t.Skip("'sh' binary not available on OS, skipping.")
 	}
-	cmd := exec.Command(sleepbin, "foo")
+	cmd := exec.Command(shell, "-c", "false")
 	expected, err := cmd.CombinedOutput()
 
-	cmd2 := exec.Command(sleepbin, "foo")
+	cmd2 := exec.Command(shell, "-c", "false")
 	actual, err := CombinedOutputTimeout(cmd2, time.Second)
 
 	assert.Error(t, err)
@@ -98,16 +136,18 @@ func TestCombinedOutputError(t *testing.T) {
 }
 
 func TestRunError(t *testing.T) {
-	if sleepbin == "" {
+	if shell == "" {
-		t.Skip("'sleep' binary not available on OS, skipping.")
+		t.Skip("'sh' binary not available on OS, skipping.")
 	}
-	cmd := exec.Command(sleepbin, "foo")
+	cmd := exec.Command(shell, "-c", "false")
 	err := RunTimeout(cmd, time.Second)
 
 	assert.Error(t, err)
 }
 
 func TestRandomSleep(t *testing.T) {
+	// TODO: Fix this test
+	t.Skip("Test failing too often, skip for now and revisit later.")
 	// test that zero max returns immediately
 	s := time.Now()
 	RandomSleep(time.Duration(0), make(chan struct{}))
@@ -131,3 +171,321 @@ func TestRandomSleep(t *testing.T) {
 	elapsed = time.Since(s)
 	assert.True(t, elapsed < time.Millisecond*150)
 }
+
+func TestDuration(t *testing.T) {
+	var d Duration
+
+	d.UnmarshalTOML([]byte(`"1s"`))
+	assert.Equal(t, time.Second, d.Duration)
+
+	d = Duration{}
+	d.UnmarshalTOML([]byte(`1s`))
+	assert.Equal(t, time.Second, d.Duration)
+
+	d = Duration{}
+	d.UnmarshalTOML([]byte(`'1s'`))
+	assert.Equal(t, time.Second, d.Duration)
+
+	d = Duration{}
+	d.UnmarshalTOML([]byte(`10`))
+	assert.Equal(t, 10*time.Second, d.Duration)
+
+	d = Duration{}
+	d.UnmarshalTOML([]byte(`1.5`))
+	assert.Equal(t, time.Second, d.Duration)
+}
+
+func TestSize(t *testing.T) {
+	var s Size
+
+	s.UnmarshalTOML([]byte(`"1B"`))
+	assert.Equal(t, int64(1), s.Size)
+
+	s = Size{}
+	s.UnmarshalTOML([]byte(`1`))
+	assert.Equal(t, int64(1), s.Size)
+
+	s = Size{}
+	s.UnmarshalTOML([]byte(`'1'`))
+	assert.Equal(t, int64(1), s.Size)
+
+	s = Size{}
+	s.UnmarshalTOML([]byte(`"1GB"`))
+	assert.Equal(t, int64(1000*1000*1000), s.Size)
+
+	s = Size{}
+	s.UnmarshalTOML([]byte(`"12GiB"`))
+	assert.Equal(t, int64(12*1024*1024*1024), s.Size)
+}
+
+func TestCompressWithGzip(t *testing.T) {
+	testData := "the quick brown fox jumps over the lazy dog"
+	inputBuffer := bytes.NewBuffer([]byte(testData))
+
+	outputBuffer, err := CompressWithGzip(inputBuffer)
+	assert.NoError(t, err)
+
+	gzipReader, err := gzip.NewReader(outputBuffer)
+	assert.NoError(t, err)
+	defer gzipReader.Close()
+
+	output, err := ioutil.ReadAll(gzipReader)
+	assert.NoError(t, err)
+
+	assert.Equal(t, testData, string(output))
+}
+
+type mockReader struct {
+	readN uint64 // record the number of calls to Read
+}
+
+func (r *mockReader) Read(p []byte) (n int, err error) {
+	r.readN++
+	return rand.Read(p)
+}
+
+func TestCompressWithGzipEarlyClose(t *testing.T) {
+	mr := &mockReader{}
+
+	rc, err := CompressWithGzip(mr)
+	assert.NoError(t, err)
+
+	n, err := io.CopyN(ioutil.Discard, rc, 10000)
+	assert.NoError(t, err)
+	assert.Equal(t, int64(10000), n)
+
+	r1 := mr.readN
+	err = rc.Close()
+	assert.NoError(t, err)
+
+	n, err = io.CopyN(ioutil.Discard, rc, 10000)
+	assert.Error(t, io.EOF, err)
+	assert.Equal(t, int64(0), n)
+
+	r2 := mr.readN
+	// no more read to the source after closing
+	assert.Equal(t, r1, r2)
+}
+
+func TestVersionAlreadySet(t *testing.T) {
+	err := SetVersion("foo")
+	assert.Nil(t, err)
+
+	err = SetVersion("bar")
+
+	assert.NotNil(t, err)
+	assert.IsType(t, VersionAlreadySetError, err)
+
+	assert.Equal(t, "foo", Version())
+}
+
+func TestAlignDuration(t *testing.T) {
+	tests := []struct {
+		name     string
+		now      time.Time
+		interval time.Duration
+		expected time.Duration
+	}{
+		{
+			name:     "aligned",
+			now:      time.Date(2018, 1, 1, 1, 1, 0, 0, time.UTC),
+			interval: 10 * time.Second,
+			expected: 0 * time.Second,
+		},
+		{
+			name:     "standard interval",
+			now:      time.Date(2018, 1, 1, 1, 1, 1, 0, time.UTC),
+			interval: 10 * time.Second,
+			expected: 9 * time.Second,
+		},
+		{
+			name:     "odd interval",
+			now:      time.Date(2018, 1, 1, 1, 1, 1, 0, time.UTC),
+			interval: 3 * time.Second,
+			expected: 2 * time.Second,
+		},
+		{
+			name:     "sub second interval",
+			now:      time.Date(2018, 1, 1, 1, 1, 0, 5e8, time.UTC),
+			interval: 1 * time.Second,
+			expected: 500 * time.Millisecond,
+		},
+		{
+			name:     "non divisible not aligned on minutes",
+			now:      time.Date(2018, 1, 1, 1, 0, 0, 0, time.UTC),
+			interval: 1*time.Second + 100*time.Millisecond,
+			expected: 400 * time.Millisecond,
+		},
+		{
+			name:     "long interval",
+			now:      time.Date(2018, 1, 1, 1, 1, 0, 0, time.UTC),
+			interval: 1 * time.Hour,
+			expected: 59 * time.Minute,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			actual := AlignDuration(tt.now, tt.interval)
+			require.Equal(t, tt.expected, actual)
+		})
+	}
+}
+
+func TestAlignTime(t *testing.T) {
+	rfc3339 := func(value string) time.Time {
+		t, _ := time.Parse(time.RFC3339, value)
+		return t
+	}
+
+	tests := []struct {
+		name     string
+		now      time.Time
+		interval time.Duration
+		expected time.Time
+	}{
+		{
+			name:     "aligned",
+			now:      rfc3339("2018-01-01T01:01:00Z"),
+			interval: 10 * time.Second,
+			expected: rfc3339("2018-01-01T01:01:00Z"),
+		},
+		{
+			name:     "aligned",
+			now:      rfc3339("2018-01-01T01:01:01Z"),
+			interval: 10 * time.Second,
+			expected: rfc3339("2018-01-01T01:01:10Z"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			actual := AlignTime(tt.now, tt.interval)
+			require.Equal(t, tt.expected, actual)
+		})
+	}
+}
+
+func TestParseTimestamp(t *testing.T) {
+	rfc3339 := func(value string) time.Time {
+		tm, err := time.Parse(time.RFC3339Nano, value)
+		if err != nil {
+			panic(err)
+		}
+		return tm
+	}
+
+	tests := []struct {
+		name      string
+		format    string
+		timestamp interface{}
+		location  string
+		expected  time.Time
+		err       bool
+	}{
+		{
+			name:      "parse layout string in utc",
+			format:    "2006-01-02 15:04:05",
+			timestamp: "2019-02-20 21:50:34",
+			location:  "UTC",
+			expected:  rfc3339("2019-02-20T21:50:34Z"),
+		},
+		{
+			name:      "parse layout string with invalid timezone",
+			format:    "2006-01-02 15:04:05",
+			timestamp: "2019-02-20 21:50:34",
+			location:  "InvalidTimeZone",
+			err:       true,
+		},
+		{
+			name:      "layout regression 6386",
+			format:    "02.01.2006 15:04:05",
+			timestamp: "09.07.2019 00:11:00",
+			expected:  rfc3339("2019-07-09T00:11:00Z"),
+		},
+		{
+			name:      "default location is utc",
+			format:    "2006-01-02 15:04:05",
+			timestamp: "2019-02-20 21:50:34",
+			expected:  rfc3339("2019-02-20T21:50:34Z"),
+		},
+		{
+			name:      "unix seconds without fractional",
+			format:    "unix",
+			timestamp: "1568338208",
+			expected:  rfc3339("2019-09-13T01:30:08Z"),
+		},
+		{
+			name:      "unix seconds with fractional",
+			format:    "unix",
+			timestamp: "1568338208.500",
+			expected:  rfc3339("2019-09-13T01:30:08.500Z"),
+		},
+		{
+			name:      "unix seconds with fractional and comma decimal point",
+			format:    "unix",
+			timestamp: "1568338208,500",
+			expected:  rfc3339("2019-09-13T01:30:08.500Z"),
+		},
+		{
+			name:      "unix seconds extra precision",
+			format:    "unix",
+			timestamp: "1568338208.00000050042",
+			expected:  rfc3339("2019-09-13T01:30:08.000000500Z"),
+		},
+		{
+			name:      "unix seconds integer",
+			format:    "unix",
+			timestamp: int64(1568338208),
+			expected:  rfc3339("2019-09-13T01:30:08Z"),
+		},
+		{
+			name:      "unix seconds float",
+			format:    "unix",
+			timestamp: float64(1568338208.500),
+			expected:  rfc3339("2019-09-13T01:30:08.500Z"),
+		},
+		{
+			name:      "unix milliseconds",
+			format:    "unix_ms",
+			timestamp: "1568338208500",
+			expected:  rfc3339("2019-09-13T01:30:08.500Z"),
+		},
+		{
+			name:      "unix milliseconds with fractional is ignored",
+			format:    "unix_ms",
+			timestamp: "1568338208500.42",
+			expected:  rfc3339("2019-09-13T01:30:08.500Z"),
+		},
+		{
+			name:      "unix microseconds",
+			format:    "unix_us",
+			timestamp: "1568338208000500",
+			expected:  rfc3339("2019-09-13T01:30:08.000500Z"),
+		},
+		{
+			name:      "unix nanoseconds",
+			format:    "unix_ns",
+			timestamp: "1568338208000000500",
+			expected:  rfc3339("2019-09-13T01:30:08.000000500Z"),
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tm, err := ParseTimestamp(tt.format, tt.timestamp, tt.location)
+			if tt.err {
+				require.Error(t, err)
+			} else {
+				require.NoError(t, err)
+				require.Equal(t, tt.expected, tm)
+			}
+		})
+	}
+}
+
+func TestProductToken(t *testing.T) {
+	token := ProductToken()
+	// Telegraf version depends on the call to SetVersion, it cannot be set
+	// multiple times and is not thread-safe.
+	re := regexp.MustCompile(`^Telegraf/[^\s]+ Go/\d+.\d+(.\d+)?$`)
+	require.True(t, re.MatchString(token), token)
+}

internal/limiter/limiter_test.go

@@ -1,54 +0,0 @@
-package limiter
-
-import (
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestRateLimiter(t *testing.T) {
-	r := NewRateLimiter(5, time.Second)
-	ticker := time.NewTicker(time.Millisecond * 75)
-
-	// test that we can only get 5 receives from the rate limiter
-	counter := 0
-outer:
-	for {
-		select {
-		case <-r.C:
-			counter++
-		case <-ticker.C:
-			break outer
-		}
-	}
-
-	assert.Equal(t, 5, counter)
-	r.Stop()
-	// verify that the Stop function closes the channel.
-	_, ok := <-r.C
-	assert.False(t, ok)
-}
-
-func TestRateLimiterMultipleIterations(t *testing.T) {
-	r := NewRateLimiter(5, time.Millisecond*50)
-	ticker := time.NewTicker(time.Millisecond * 250)
-
-	// test that we can get 15 receives from the rate limiter
-	counter := 0
-outer:
-	for {
-		select {
-		case <-ticker.C:
-			break outer
-		case <-r.C:
-			counter++
-		}
-	}
-
-	assert.True(t, counter > 10)
-	r.Stop()
-	// verify that the Stop function closes the channel.
-	_, ok := <-r.C
-	assert.False(t, ok)
-}

internal/models/filter_test.go

@@ -1,359 +0,0 @@
-package models
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestFilter_ApplyEmpty(t *testing.T) {
-	f := Filter{}
-	require.NoError(t, f.Compile())
-	assert.False(t, f.IsActive())
-
-	assert.True(t, f.Apply("m", map[string]interface{}{"value": int64(1)}, map[string]string{}))
-}
-
-func TestFilter_ApplyTagsDontPass(t *testing.T) {
-	filters := []TagFilter{
-		TagFilter{
-			Name:   "cpu",
-			Filter: []string{"cpu-*"},
-		},
-	}
-	f := Filter{
-		TagDrop: filters,
-	}
-	require.NoError(t, f.Compile())
-	require.NoError(t, f.Compile())
-	assert.True(t, f.IsActive())
-
-	assert.False(t, f.Apply("m",
-		map[string]interface{}{"value": int64(1)},
-		map[string]string{"cpu": "cpu-total"}))
-}
-
-func TestFilter_ApplyDeleteFields(t *testing.T) {
-	f := Filter{
-		FieldDrop: []string{"value"},
-	}
-	require.NoError(t, f.Compile())
-	require.NoError(t, f.Compile())
-	assert.True(t, f.IsActive())
-
-	fields := map[string]interface{}{"value": int64(1), "value2": int64(2)}
-	assert.True(t, f.Apply("m", fields, nil))
-	assert.Equal(t, map[string]interface{}{"value2": int64(2)}, fields)
-}
-
-func TestFilter_ApplyDeleteAllFields(t *testing.T) {
-	f := Filter{
-		FieldDrop: []string{"value*"},
-	}
-	require.NoError(t, f.Compile())
-	require.NoError(t, f.Compile())
-	assert.True(t, f.IsActive())
-
-	fields := map[string]interface{}{"value": int64(1), "value2": int64(2)}
-	assert.False(t, f.Apply("m", fields, nil))
-}
-
-func TestFilter_Empty(t *testing.T) {
-	f := Filter{}
-
-	measurements := []string{
-		"foo",
-		"bar",
-		"barfoo",
-		"foo_bar",
-		"foo.bar",
-		"foo-bar",
-		"supercalifradjulisticexpialidocious",
-	}
-
-	for _, measurement := range measurements {
-		if !f.shouldFieldPass(measurement) {
-			t.Errorf("Expected measurement %s to pass", measurement)
-		}
-	}
-}
-
-func TestFilter_NamePass(t *testing.T) {
-	f := Filter{
-		NamePass: []string{"foo*", "cpu_usage_idle"},
-	}
-	require.NoError(t, f.Compile())
-
-	passes := []string{
-		"foo",
-		"foo_bar",
-		"foo.bar",
-		"foo-bar",
-		"cpu_usage_idle",
-	}
-
-	drops := []string{
-		"bar",
-		"barfoo",
-		"bar_foo",
-		"cpu_usage_busy",
-	}
-
-	for _, measurement := range passes {
-		if !f.shouldNamePass(measurement) {
-			t.Errorf("Expected measurement %s to pass", measurement)
-		}
-	}
-
-	for _, measurement := range drops {
-		if f.shouldNamePass(measurement) {
-			t.Errorf("Expected measurement %s to drop", measurement)
-		}
-	}
-}
-
-func TestFilter_NameDrop(t *testing.T) {
-	f := Filter{
-		NameDrop: []string{"foo*", "cpu_usage_idle"},
-	}
-	require.NoError(t, f.Compile())
-
-	drops := []string{
-		"foo",
-		"foo_bar",
-		"foo.bar",
-		"foo-bar",
-		"cpu_usage_idle",
-	}
-
-	passes := []string{
-		"bar",
-		"barfoo",
-		"bar_foo",
-		"cpu_usage_busy",
-	}
-
-	for _, measurement := range passes {
-		if !f.shouldNamePass(measurement) {
-			t.Errorf("Expected measurement %s to pass", measurement)
-		}
-	}
-
-	for _, measurement := range drops {
-		if f.shouldNamePass(measurement) {
-			t.Errorf("Expected measurement %s to drop", measurement)
-		}
-	}
-}
-
-func TestFilter_FieldPass(t *testing.T) {
-	f := Filter{
-		FieldPass: []string{"foo*", "cpu_usage_idle"},
-	}
-	require.NoError(t, f.Compile())
-
-	passes := []string{
-		"foo",
-		"foo_bar",
-		"foo.bar",
-		"foo-bar",
-		"cpu_usage_idle",
-	}
-
-	drops := []string{
-		"bar",
-		"barfoo",
-		"bar_foo",
-		"cpu_usage_busy",
-	}
-
-	for _, measurement := range passes {
-		if !f.shouldFieldPass(measurement) {
-			t.Errorf("Expected measurement %s to pass", measurement)
-		}
-	}
-
-	for _, measurement := range drops {
-		if f.shouldFieldPass(measurement) {
-			t.Errorf("Expected measurement %s to drop", measurement)
-		}
-	}
-}
-
-func TestFilter_FieldDrop(t *testing.T) {
-	f := Filter{
-		FieldDrop: []string{"foo*", "cpu_usage_idle"},
-	}
-	require.NoError(t, f.Compile())
-
-	drops := []string{
-		"foo",
-		"foo_bar",
-		"foo.bar",
-		"foo-bar",
-		"cpu_usage_idle",
-	}
-
-	passes := []string{
-		"bar",
-		"barfoo",
-		"bar_foo",
-		"cpu_usage_busy",
-	}
-
-	for _, measurement := range passes {
-		if !f.shouldFieldPass(measurement) {
-			t.Errorf("Expected measurement %s to pass", measurement)
-		}
-	}
-
-	for _, measurement := range drops {
-		if f.shouldFieldPass(measurement) {
-			t.Errorf("Expected measurement %s to drop", measurement)
-		}
-	}
-}
-
-func TestFilter_TagPass(t *testing.T) {
-	filters := []TagFilter{
-		TagFilter{
-			Name:   "cpu",
-			Filter: []string{"cpu-*"},
-		},
-		TagFilter{
-			Name:   "mem",
-			Filter: []string{"mem_free"},
-		}}
-	f := Filter{
-		TagPass: filters,
-	}
-	require.NoError(t, f.Compile())
-
-	passes := []map[string]string{
-		{"cpu": "cpu-total"},
-		{"cpu": "cpu-0"},
-		{"cpu": "cpu-1"},
-		{"cpu": "cpu-2"},
-		{"mem": "mem_free"},
-	}
-
-	drops := []map[string]string{
-		{"cpu": "cputotal"},
-		{"cpu": "cpu0"},
-		{"cpu": "cpu1"},
-		{"cpu": "cpu2"},
-		{"mem": "mem_used"},
-	}
-
-	for _, tags := range passes {
-		if !f.shouldTagsPass(tags) {
-			t.Errorf("Expected tags %v to pass", tags)
-		}
-	}
-
-	for _, tags := range drops {
-		if f.shouldTagsPass(tags) {
-			t.Errorf("Expected tags %v to drop", tags)
-		}
-	}
-}
-
-func TestFilter_TagDrop(t *testing.T) {
-	filters := []TagFilter{
-		TagFilter{
-			Name:   "cpu",
-			Filter: []string{"cpu-*"},
-		},
-		TagFilter{
-			Name:   "mem",
-			Filter: []string{"mem_free"},
-		}}
-	f := Filter{
-		TagDrop: filters,
-	}
-	require.NoError(t, f.Compile())
-
-	drops := []map[string]string{
-		{"cpu": "cpu-total"},
-		{"cpu": "cpu-0"},
-		{"cpu": "cpu-1"},
-		{"cpu": "cpu-2"},
-		{"mem": "mem_free"},
-	}
-
-	passes := []map[string]string{
-		{"cpu": "cputotal"},
-		{"cpu": "cpu0"},
-		{"cpu": "cpu1"},
-		{"cpu": "cpu2"},
-		{"mem": "mem_used"},
-	}
-
-	for _, tags := range passes {
-		if !f.shouldTagsPass(tags) {
-			t.Errorf("Expected tags %v to pass", tags)
-		}
-	}
-
-	for _, tags := range drops {
-		if f.shouldTagsPass(tags) {
-			t.Errorf("Expected tags %v to drop", tags)
-		}
-	}
-}
-
-func TestFilter_FilterTagsNoMatches(t *testing.T) {
-	pretags := map[string]string{
-		"host":  "localhost",
-		"mytag": "foobar",
-	}
-	f := Filter{
-		TagExclude: []string{"nomatch"},
-	}
-	require.NoError(t, f.Compile())
-
-	f.filterTags(pretags)
-	assert.Equal(t, map[string]string{
-		"host":  "localhost",
-		"mytag": "foobar",
-	}, pretags)
-
-	f = Filter{
-		TagInclude: []string{"nomatch"},
-	}
-	require.NoError(t, f.Compile())
-
-	f.filterTags(pretags)
-	assert.Equal(t, map[string]string{}, pretags)
-}
-
-func TestFilter_FilterTagsMatches(t *testing.T) {
-	pretags := map[string]string{
-		"host":  "localhost",
-		"mytag": "foobar",
-	}
-	f := Filter{
-		TagExclude: []string{"ho*"},
-	}
-	require.NoError(t, f.Compile())
-
-	f.filterTags(pretags)
-	assert.Equal(t, map[string]string{
-		"mytag": "foobar",
-	}, pretags)
-
-	pretags = map[string]string{
-		"host":  "localhost",
-		"mytag": "foobar",
-	}
-	f = Filter{
-		TagInclude: []string{"my*"},
-	}
-	require.NoError(t, f.Compile())
-
-	f.filterTags(pretags)
-	assert.Equal(t, map[string]string{
-		"mytag": "foobar",
-	}, pretags)
-}

internal/models/running_input.go

@@ -1,24 +0,0 @@
-package models
-
-import (
-	"time"
-
-	"github.com/influxdata/telegraf"
-)
-
-type RunningInput struct {
-	Name   string
-	Input  telegraf.Input
-	Config *InputConfig
-}
-
-// InputConfig containing a name, interval, and filter
-type InputConfig struct {
-	Name              string
-	NameOverride      string
-	MeasurementPrefix string
-	MeasurementSuffix string
-	Tags              map[string]string
-	Filter            Filter
-	Interval          time.Duration
-}

internal/models/running_output.go

@@ -1,156 +0,0 @@
-package models
-
-import (
-	"log"
-	"time"
-
-	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/internal/buffer"
-)
-
-const (
-	// Default size of metrics batch size.
-	DEFAULT_METRIC_BATCH_SIZE = 1000
-
-	// Default number of metrics kept. It should be a multiple of batch size.
-	DEFAULT_METRIC_BUFFER_LIMIT = 10000
-)
-
-// RunningOutput contains the output configuration
-type RunningOutput struct {
-	Name              string
-	Output            telegraf.Output
-	Config            *OutputConfig
-	Quiet             bool
-	MetricBufferLimit int
-	MetricBatchSize   int
-
-	metrics     *buffer.Buffer
-	failMetrics *buffer.Buffer
-}
-
-func NewRunningOutput(
-	name string,
-	output telegraf.Output,
-	conf *OutputConfig,
-	batchSize int,
-	bufferLimit int,
-) *RunningOutput {
-	if bufferLimit == 0 {
-		bufferLimit = DEFAULT_METRIC_BUFFER_LIMIT
-	}
-	if batchSize == 0 {
-		batchSize = DEFAULT_METRIC_BATCH_SIZE
-	}
-	ro := &RunningOutput{
-		Name:              name,
-		metrics:           buffer.NewBuffer(batchSize),
-		failMetrics:       buffer.NewBuffer(bufferLimit),
-		Output:            output,
-		Config:            conf,
-		MetricBufferLimit: bufferLimit,
-		MetricBatchSize:   batchSize,
-	}
-	return ro
-}
-
-// AddMetric adds a metric to the output. This function can also write cached
-// points if FlushBufferWhenFull is true.
-func (ro *RunningOutput) AddMetric(metric telegraf.Metric) {
-	// Filter any tagexclude/taginclude parameters before adding metric
-	if ro.Config.Filter.IsActive() {
-		// In order to filter out tags, we need to create a new metric, since
-		// metrics are immutable once created.
-		name := metric.Name()
-		tags := metric.Tags()
-		fields := metric.Fields()
-		t := metric.Time()
-		if ok := ro.Config.Filter.Apply(name, fields, tags); !ok {
-			return
-		}
-		// error is not possible if creating from another metric, so ignore.
-		metric, _ = telegraf.NewMetric(name, tags, fields, t)
-	}
-
-	ro.metrics.Add(metric)
-	if ro.metrics.Len() == ro.MetricBatchSize {
-		batch := ro.metrics.Batch(ro.MetricBatchSize)
-		err := ro.write(batch)
-		if err != nil {
-			ro.failMetrics.Add(batch...)
-		}
-	}
-}
-
-// Write writes all cached points to this output.
-func (ro *RunningOutput) Write() error {
-	if !ro.Quiet {
-		log.Printf("I! Output [%s] buffer fullness: %d / %d metrics. "+
-			"Total gathered metrics: %d. Total dropped metrics: %d.",
-			ro.Name,
-			ro.failMetrics.Len()+ro.metrics.Len(),
-			ro.MetricBufferLimit,
-			ro.metrics.Total(),
-			ro.metrics.Drops()+ro.failMetrics.Drops())
-	}
-
-	var err error
-	if !ro.failMetrics.IsEmpty() {
-		bufLen := ro.failMetrics.Len()
-		// how many batches of failed writes we need to write.
-		nBatches := bufLen/ro.MetricBatchSize + 1
-		batchSize := ro.MetricBatchSize
-
-		for i := 0; i < nBatches; i++ {
-			// If it's the last batch, only grab the metrics that have not had
-			// a write attempt already (this is primarily to preserve order).
-			if i == nBatches-1 {
-				batchSize = bufLen % ro.MetricBatchSize
-			}
-			batch := ro.failMetrics.Batch(batchSize)
-			// If we've already failed previous writes, don't bother trying to
-			// write to this output again. We are not exiting the loop just so
-			// that we can rotate the metrics to preserve order.
-			if err == nil {
-				err = ro.write(batch)
-			}
-			if err != nil {
-				ro.failMetrics.Add(batch...)
-			}
-		}
-	}
-
-	batch := ro.metrics.Batch(ro.MetricBatchSize)
-	// see comment above about not trying to write to an already failed output.
-	// if ro.failMetrics is empty then err will always be nil at this point.
-	if err == nil {
-		err = ro.write(batch)
-	}
-	if err != nil {
-		ro.failMetrics.Add(batch...)
-		return err
-	}
-	return nil
-}
-
-func (ro *RunningOutput) write(metrics []telegraf.Metric) error {
-	if metrics == nil || len(metrics) == 0 {
-		return nil
-	}
-	start := time.Now()
-	err := ro.Output.Write(metrics)
-	elapsed := time.Since(start)
-	if err == nil {
-		if !ro.Quiet {
-			log.Printf("I! Output [%s] wrote batch of %d metrics in %s\n",
-				ro.Name, len(metrics), elapsed)
-		}
-	}
-	return err
-}
-
-// OutputConfig containing name and filter
-type OutputConfig struct {
-	Name   string
-	Filter Filter
-}

internal/rotate/file_writer.go

@@ -0,0 +1,185 @@
+package rotate
+
+// Rotating things
+import (
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+// FilePerm defines the permissions that Writer will use for all
+// the files it creates.
+const (
+	FilePerm   = os.FileMode(0644)
+	DateFormat = "2006-01-02"
+)
+
+// FileWriter implements the io.Writer interface and writes to the
+// filename specified.
+// Will rotate at the specified interval and/or when the current file size exceeds maxSizeInBytes
+// At rotation time, current file is renamed and a new file is created.
+// If the number of archives exceeds maxArchives, older files are deleted.
+type FileWriter struct {
+	filename                 string
+	filenameRotationTemplate string
+	current                  *os.File
+	interval                 time.Duration
+	maxSizeInBytes           int64
+	maxArchives              int
+	expireTime               time.Time
+	bytesWritten             int64
+	sync.Mutex
+}
+
+// NewFileWriter creates a new file writer.
+func NewFileWriter(filename string, interval time.Duration, maxSizeInBytes int64, maxArchives int) (io.WriteCloser, error) {
+	if interval == 0 && maxSizeInBytes <= 0 {
+		// No rotation needed so a basic io.Writer will do the trick
+		return openFile(filename)
+	}
+
+	w := &FileWriter{
+		filename:                 filename,
+		interval:                 interval,
+		maxSizeInBytes:           maxSizeInBytes,
+		maxArchives:              maxArchives,
+		filenameRotationTemplate: getFilenameRotationTemplate(filename),
+	}
+
+	if err := w.openCurrent(); err != nil {
+		return nil, err
+	}
+
+	return w, nil
+}
+
+func openFile(filename string) (*os.File, error) {
+	return os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_APPEND, FilePerm)
+}
+
+func getFilenameRotationTemplate(filename string) string {
+	// Extract the file extension
+	fileExt := filepath.Ext(filename)
+	// Remove the file extension from the filename (if any)
+	stem := strings.TrimSuffix(filename, fileExt)
+	return stem + ".%s-%s" + fileExt
+}
+
+// Write writes p to the current file, then checks to see if
+// rotation is necessary.
+func (w *FileWriter) Write(p []byte) (n int, err error) {
+	w.Lock()
+	defer w.Unlock()
+	if n, err = w.current.Write(p); err != nil {
+		return 0, err
+	}
+	w.bytesWritten += int64(n)
+
+	if err = w.rotateIfNeeded(); err != nil {
+		return 0, err
+	}
+
+	return n, nil
+}
+
+// Close closes the current file.  Writer is unusable after this
+// is called.
+func (w *FileWriter) Close() (err error) {
+	w.Lock()
+	defer w.Unlock()
+
+	// Rotate before closing
+	if err = w.rotate(); err != nil {
+		return err
+	}
+
+	w.current = nil
+	return nil
+}
+
+func (w *FileWriter) openCurrent() (err error) {
+	// In case ModTime() fails, we use time.Now()
+	w.expireTime = time.Now().Add(w.interval)
+	w.bytesWritten = 0
+	w.current, err = openFile(w.filename)
+
+	if err != nil {
+		return err
+	}
+
+	// Goal here is to rotate old pre-existing files.
+	// For that we use fileInfo.ModTime, instead of time.Now().
+	// Example: telegraf is restarted every 23 hours and
+	// the rotation interval is set to 24 hours.
+	// With time.now() as a reference we'd never rotate the file.
+	if fileInfo, err := w.current.Stat(); err == nil {
+		w.expireTime = fileInfo.ModTime().Add(w.interval)
+		w.bytesWritten = fileInfo.Size()
+	}
+
+	if err = w.rotateIfNeeded(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (w *FileWriter) rotateIfNeeded() error {
+	if (w.interval > 0 && time.Now().After(w.expireTime)) ||
+		(w.maxSizeInBytes > 0 && w.bytesWritten >= w.maxSizeInBytes) {
+		if err := w.rotate(); err != nil {
+			//Ignore rotation errors and keep the log open
+			fmt.Printf("unable to rotate the file '%s', %s", w.filename, err.Error())
+		}
+		return w.openCurrent()
+	}
+	return nil
+}
+
+func (w *FileWriter) rotate() (err error) {
+	if err = w.current.Close(); err != nil {
+		return err
+	}
+
+	// Use year-month-date for readability, unix time to make the file name unique with second precision
+	now := time.Now()
+	rotatedFilename := fmt.Sprintf(w.filenameRotationTemplate, now.Format(DateFormat), strconv.FormatInt(now.Unix(), 10))
+	if err = os.Rename(w.filename, rotatedFilename); err != nil {
+		return err
+	}
+
+	if err = w.purgeArchivesIfNeeded(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (w *FileWriter) purgeArchivesIfNeeded() (err error) {
+	if w.maxArchives == -1 {
+		//Skip archiving
+		return nil
+	}
+
+	var matches []string
+	if matches, err = filepath.Glob(fmt.Sprintf(w.filenameRotationTemplate, "*", "*")); err != nil {
+		return err
+	}
+
+	//if there are more archives than the configured maximum, then purge older files
+	if len(matches) > w.maxArchives {
+		//sort files alphanumerically to delete older files first
+		sort.Strings(matches)
+		for _, filename := range matches[:len(matches)-w.maxArchives] {
+			if err = os.Remove(filename); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}

internal/rotate/file_writer_test.go

@@ -0,0 +1,148 @@
+package rotate
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFileWriter_NoRotation(t *testing.T) {
+	tempDir, err := ioutil.TempDir("", "RotationNo")
+	require.NoError(t, err)
+	writer, err := NewFileWriter(filepath.Join(tempDir, "test"), 0, 0, 0)
+	require.NoError(t, err)
+	defer func() { writer.Close(); os.RemoveAll(tempDir) }()
+
+	_, err = writer.Write([]byte("Hello World"))
+	require.NoError(t, err)
+	_, err = writer.Write([]byte("Hello World 2"))
+	require.NoError(t, err)
+	files, _ := ioutil.ReadDir(tempDir)
+	assert.Equal(t, 1, len(files))
+}
+
+func TestFileWriter_TimeRotation(t *testing.T) {
+	tempDir, err := ioutil.TempDir("", "RotationTime")
+	require.NoError(t, err)
+	interval, _ := time.ParseDuration("1s")
+	writer, err := NewFileWriter(filepath.Join(tempDir, "test"), interval, 0, -1)
+	require.NoError(t, err)
+	defer func() { writer.Close(); os.RemoveAll(tempDir) }()
+
+	_, err = writer.Write([]byte("Hello World"))
+	require.NoError(t, err)
+	time.Sleep(1 * time.Second)
+	_, err = writer.Write([]byte("Hello World 2"))
+	require.NoError(t, err)
+	files, _ := ioutil.ReadDir(tempDir)
+	assert.Equal(t, 2, len(files))
+}
+
+func TestFileWriter_ReopenTimeRotation(t *testing.T) {
+	tempDir, err := ioutil.TempDir("", "RotationTime")
+	require.NoError(t, err)
+	interval, _ := time.ParseDuration("1s")
+	filePath := filepath.Join(tempDir, "test.log")
+	err = ioutil.WriteFile(filePath, []byte("Hello World"), 0644)
+	time.Sleep(1 * time.Second)
+	assert.NoError(t, err)
+	writer, err := NewFileWriter(filepath.Join(tempDir, "test.log"), interval, 0, -1)
+	require.NoError(t, err)
+	defer func() { writer.Close(); os.RemoveAll(tempDir) }()
+
+	files, _ := ioutil.ReadDir(tempDir)
+	assert.Equal(t, 2, len(files))
+}
+
+func TestFileWriter_SizeRotation(t *testing.T) {
+	tempDir, err := ioutil.TempDir("", "RotationSize")
+	require.NoError(t, err)
+	maxSize := int64(9)
+	writer, err := NewFileWriter(filepath.Join(tempDir, "test.log"), 0, maxSize, -1)
+	require.NoError(t, err)
+	defer func() { writer.Close(); os.RemoveAll(tempDir) }()
+
+	_, err = writer.Write([]byte("Hello World"))
+	require.NoError(t, err)
+	_, err = writer.Write([]byte("World 2"))
+	require.NoError(t, err)
+	files, _ := ioutil.ReadDir(tempDir)
+	assert.Equal(t, 2, len(files))
+}
+
+func TestFileWriter_ReopenSizeRotation(t *testing.T) {
+	tempDir, err := ioutil.TempDir("", "RotationSize")
+	require.NoError(t, err)
+	maxSize := int64(12)
+	filePath := filepath.Join(tempDir, "test.log")
+	err = ioutil.WriteFile(filePath, []byte("Hello World"), 0644)
+	assert.NoError(t, err)
+	writer, err := NewFileWriter(filepath.Join(tempDir, "test.log"), 0, maxSize, -1)
+	require.NoError(t, err)
+	defer func() { writer.Close(); os.RemoveAll(tempDir) }()
+
+	_, err = writer.Write([]byte("Hello World Again"))
+	require.NoError(t, err)
+	files, _ := ioutil.ReadDir(tempDir)
+	assert.Equal(t, 2, len(files))
+}
+
+func TestFileWriter_DeleteArchives(t *testing.T) {
+	tempDir, err := ioutil.TempDir("", "RotationDeleteArchives")
+	require.NoError(t, err)
+	maxSize := int64(5)
+	writer, err := NewFileWriter(filepath.Join(tempDir, "test.log"), 0, maxSize, 2)
+	require.NoError(t, err)
+	defer func() { writer.Close(); os.RemoveAll(tempDir) }()
+
+	_, err = writer.Write([]byte("First file"))
+	require.NoError(t, err)
+	// File names include the date with second precision
+	// So, to force rotation with different file names
+	// we need to wait
+	time.Sleep(1 * time.Second)
+	_, err = writer.Write([]byte("Second file"))
+	require.NoError(t, err)
+	time.Sleep(1 * time.Second)
+	_, err = writer.Write([]byte("Third file"))
+	require.NoError(t, err)
+
+	files, _ := ioutil.ReadDir(tempDir)
+	assert.Equal(t, 3, len(files))
+
+	for _, tempFile := range files {
+		var bytes []byte
+		var err error
+		path := filepath.Join(tempDir, tempFile.Name())
+		if bytes, err = ioutil.ReadFile(path); err != nil {
+			t.Error(err.Error())
+			return
+		}
+		contents := string(bytes)
+
+		if contents != "" && contents != "Second file" && contents != "Third file" {
+			t.Error("Should have deleted the eldest log file")
+			return
+		}
+	}
+}
+
+func TestFileWriter_CloseRotates(t *testing.T) {
+	tempDir, err := ioutil.TempDir("", "RotationClose")
+	require.NoError(t, err)
+	defer os.RemoveAll(tempDir)
+	maxSize := int64(9)
+	writer, err := NewFileWriter(filepath.Join(tempDir, "test.log"), 0, maxSize, -1)
+	require.NoError(t, err)
+
+	writer.Close()
+
+	files, _ := ioutil.ReadDir(tempDir)
+	assert.Equal(t, 1, len(files))
+	assert.Regexp(t, "^test\\.[^\\.]+\\.log$", files[0].Name())
+}

internal/syslog/framing.go

@@ -0,0 +1,64 @@
+package syslog
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Framing represents the framing technique we expect the messages to come.
+type Framing int
+
+const (
+	// OctetCounting indicates the transparent framing technique for syslog transport.
+	OctetCounting Framing = iota
+	// NonTransparent indicates the non-transparent framing technique for syslog transport.
+	NonTransparent
+)
+
+func (f Framing) String() string {
+	switch f {
+	case OctetCounting:
+		return "OCTET-COUNTING"
+	case NonTransparent:
+		return "NON-TRANSPARENT"
+	}
+	return ""
+}
+
+// UnmarshalTOML implements ability to unmarshal framing from TOML files.
+func (f *Framing) UnmarshalTOML(data []byte) (err error) {
+	return f.UnmarshalText(data)
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler
+func (f *Framing) UnmarshalText(data []byte) (err error) {
+	s := string(data)
+	switch strings.ToUpper(s) {
+	case `OCTET-COUNTING`:
+		fallthrough
+	case `"OCTET-COUNTING"`:
+		fallthrough
+	case `'OCTET-COUNTING'`:
+		*f = OctetCounting
+		return
+
+	case `NON-TRANSPARENT`:
+		fallthrough
+	case `"NON-TRANSPARENT"`:
+		fallthrough
+	case `'NON-TRANSPARENT'`:
+		*f = NonTransparent
+		return
+	}
+	*f = -1
+	return fmt.Errorf("unknown framing")
+}
+
+// MarshalText implements encoding.TextMarshaler
+func (f Framing) MarshalText() ([]byte, error) {
+	s := f.String()
+	if s != "" {
+		return []byte(s), nil
+	}
+	return nil, fmt.Errorf("unknown framing")
+}

internal/syslog/framing_test.go

@@ -0,0 +1,37 @@
+package syslog
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestFraming(t *testing.T) {
+	var f1 Framing
+	f1.UnmarshalTOML([]byte(`"non-transparent"`))
+	assert.Equal(t, NonTransparent, f1)
+
+	var f2 Framing
+	f2.UnmarshalTOML([]byte(`non-transparent`))
+	assert.Equal(t, NonTransparent, f2)
+
+	var f3 Framing
+	f3.UnmarshalTOML([]byte(`'non-transparent'`))
+	assert.Equal(t, NonTransparent, f3)
+
+	var f4 Framing
+	f4.UnmarshalTOML([]byte(`"octet-counting"`))
+	assert.Equal(t, OctetCounting, f4)
+
+	var f5 Framing
+	f5.UnmarshalTOML([]byte(`octet-counting`))
+	assert.Equal(t, OctetCounting, f5)
+
+	var f6 Framing
+	f6.UnmarshalTOML([]byte(`'octet-counting'`))
+	assert.Equal(t, OctetCounting, f6)
+
+	var f7 Framing
+	err := f7.UnmarshalTOML([]byte(`nope`))
+	assert.Equal(t, Framing(-1), f7)
+	assert.Error(t, err)
+}