telegraf/plugins/inputs/httpjson
Cameron Sparr b2a4d4a018 Allow ssl option specification for httpjson plugin
closes #769
2016-03-01 18:17:19 +00:00
..
README.md Additional request header parameters for httpjson plugin 2016-01-26 16:02:47 -07:00
httpjson.go Allow ssl option specification for httpjson plugin 2016-03-01 18:17:19 +00:00
httpjson_test.go Allow ssl option specification for httpjson plugin 2016-03-01 18:17:19 +00:00

README.md

HTTP JSON Plugin

The httpjson plugin can collect data from remote URLs which respond with JSON. Then it flattens JSON and finds all numeric values, treating them as floats.

For example, if you have a service called mycollector, which has HTTP endpoint for gathering stats at http://my.service.com/_stats, you would configure the HTTP JSON plugin like this:

[[httpjson.services]]
  name = "mycollector"

  servers = [
    "http://my.service.com/_stats"
  ]

  # HTTP method to use (case-sensitive)
  method = "GET"

name is used as a prefix for the measurements.

method specifies HTTP method to use for requests.

You can also specify which keys from server response should be considered tags:

[[httpjson.services]]
  ...

  tag_keys = [
    "role",
    "version"
  ]

You can also specify additional request parameters for the service:

[[httpjson.services]]
  ...

 [httpjson.services.parameters]
    event_type = "cpu_spike"
    threshold = "0.75"

You can also specify additional request header parameters for the service:

[[httpjson.services]]
  ...

 [httpjson.services.headers]
    X-Auth-Token = "my-xauth-token"
    apiVersion = "v1"

Example:

Let's say that we have a service named "mycollector" configured like this:

[httpjson]
  [[httpjson.services]]
    name = "mycollector"

    servers = [
      "http://my.service.com/_stats"
    ]

    # HTTP method to use (case-sensitive)
    method = "GET"

    tag_keys = ["service"]

which responds with the following JSON:

{
    "service": "service01",
    "a": 0.5,
    "b": {
        "c": "some text",
        "d": 0.1,
        "e": 5
    }
}

The collected metrics will be:

httpjson_mycollector_a,service='service01',server='http://my.service.com/_stats' value=0.5
httpjson_mycollector_b_d,service='service01',server='http://my.service.com/_stats' value=0.1
httpjson_mycollector_b_e,service='service01',server='http://my.service.com/_stats' value=5

Example 2, Multiple Services:

There is also the option to collect JSON from multiple services, here is an example doing that.

[httpjson]
  [[httpjson.services]]
    name = "mycollector1"

    servers = [
      "http://my.service1.com/_stats"
    ]

    # HTTP method to use (case-sensitive)
    method = "GET"

  [[httpjson.services]]
    name = "mycollector2"

    servers = [
      "http://service.net/json/stats"
    ]

    # HTTP method to use (case-sensitive)
    method = "POST"

The services respond with the following JSON:

mycollector1:

{
    "a": 0.5,
    "b": {
        "c": "some text",
        "d": 0.1,
        "e": 5
    }
}

mycollector2:

{
    "load": 100,
    "users": 1335
}

The collected metrics will be:

httpjson_mycollector1_a,server='http://my.service.com/_stats' value=0.5
httpjson_mycollector1_b_d,server='http://my.service.com/_stats' value=0.1
httpjson_mycollector1_b_e,server='http://my.service.com/_stats' value=5

httpjson_mycollector2_load,server='http://service.net/json/stats' value=100
httpjson_mycollector2_users,server='http://service.net/json/stats' value=1335