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Add input plugin for DC/OS (#3519)

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Daniel Nelson 2017-11-29 11:50:32 -08:00 committed by GitHub
parent bf65e19486
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1
Godeps
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@ -10,6 +10,7 @@ github.com/couchbase/go-couchbase bfe555a140d53dc1adf390f1a1d4b0fd4ceadb28
github.com/couchbase/gomemcached 4a25d2f4e1dea9ea7dd76dfd943407abf9b07d29 github.com/couchbase/gomemcached 4a25d2f4e1dea9ea7dd76dfd943407abf9b07d29
github.com/couchbase/goutils 5823a0cbaaa9008406021dc5daf80125ea30bba6 github.com/couchbase/goutils 5823a0cbaaa9008406021dc5daf80125ea30bba6
github.com/davecgh/go-spew 346938d642f2ec3594ed81d874461961cd0faa76 github.com/davecgh/go-spew 346938d642f2ec3594ed81d874461961cd0faa76
github.com/dgrijalva/jwt-go dbeaa9332f19a944acb5736b4456cfcc02140e29
github.com/docker/docker f5ec1e2936dcbe7b5001c2b817188b095c700c27 github.com/docker/docker f5ec1e2936dcbe7b5001c2b817188b095c700c27
github.com/docker/go-connections 990a1a1a70b0da4c4cb70e117971a4f0babfbf1a github.com/docker/go-connections 990a1a1a70b0da4c4cb70e117971a4f0babfbf1a
github.com/eapache/go-resiliency b86b1ec0dd4209a588dc1285cdd471e73525c0b3 github.com/eapache/go-resiliency b86b1ec0dd4209a588dc1285cdd471e73525c0b3

1
plugins/inputs/all/all.go
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@ -15,6 +15,7 @@ import (
_ "github.com/influxdata/telegraf/plugins/inputs/consul" _ "github.com/influxdata/telegraf/plugins/inputs/consul"
_ "github.com/influxdata/telegraf/plugins/inputs/couchbase" _ "github.com/influxdata/telegraf/plugins/inputs/couchbase"
_ "github.com/influxdata/telegraf/plugins/inputs/couchdb" _ "github.com/influxdata/telegraf/plugins/inputs/couchdb"
_ "github.com/influxdata/telegraf/plugins/inputs/dcos"
_ "github.com/influxdata/telegraf/plugins/inputs/disque" _ "github.com/influxdata/telegraf/plugins/inputs/disque"
_ "github.com/influxdata/telegraf/plugins/inputs/dmcache" _ "github.com/influxdata/telegraf/plugins/inputs/dmcache"
_ "github.com/influxdata/telegraf/plugins/inputs/dns_query" _ "github.com/influxdata/telegraf/plugins/inputs/dns_query"

209
plugins/inputs/dcos/README.md Normal file
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@ -0,0 +1,209 @@
# DC/OS Input Plugin
This input plugin gathers metrics from a DC/OS cluster's [metrics component](https://docs.mesosphere.com/1.10/metrics/).
**Series Cardinality Warning**
Depending on the work load of your DC/OS cluster, this plugin can quickly
create a high number of series which, when unchecked, can cause high load on
your database.
- Use [measurement filtering](https://github.com/influxdata/telegraf/blob/master/docs/CONFIGURATION.md#measurement-filtering) liberally to exclude unneeded metrics as well as the node, container, and app inclue/exclude options.
- Write to a database with an appropriate [retention policy](https://docs.influxdata.com/influxdb/v1.3/concepts/glossary/#retention-policy-rp).
- Limit the number of series allowed in your database using the `max-series-per-database` and `max-values-per-tag` settings.
- Consider enabling the [TSI](https://docs.influxdata.com/influxdb/v1.3/about_the_project/releasenotes-changelog/#release-notes-8) engine.
- Monitor your [series cardinality](https://docs.influxdata.com/influxdb/v1.3/troubleshooting/frequently-asked-questions/#how-can-i-query-for-series-cardinality).
### Configuration:
```toml
[[inputs.dcos]]
## The DC/OS cluster URL.
cluster_url = "https://dcos-master-1"
## The ID of the service account.
service_account_id = "telegraf"
## The private key file for the service account.
service_account_private_key = "/etc/telegraf/telegraf-sa-key.pem"
## Path containing login token. If set, will read on every gather.
# token_file = "/home/dcos/.dcos/token"
## In all filter options if both include and exclude are empty all items
## will be collected. Arrays may contain glob patterns.
##
## Node IDs to collect metrics from. If a node is excluded, no metrics will
## be collected for its containers or apps.
# node_include = []
# node_exclude = []
## Container IDs to collect container metrics from.
# container_include = []
# container_exclude = []
## Container IDs to collect app metrics from.
# app_include = []
# app_exclude = []
## Maximum concurrent connections to the cluster.
# max_connections = 10
## Maximum time to receive a response from cluster.
# response_timeout = "20s"
## Optional SSL Config
# ssl_ca = "/etc/telegraf/ca.pem"
# ssl_cert = "/etc/telegraf/cert.pem"
# ssl_key = "/etc/telegraf/key.pem"
## If false, skip chain & host verification
# insecure_skip_verify = true
## Recommended filtering to reduce series cardinality.
# [inputs.dcos.tagdrop]
# path = ["/var/lib/mesos/slave/slaves/*"]
```
#### Enterprise Authentication
When using Enterprise DC/OS, it is recommended to use a service account to
authenticate with the cluster.
The plugin requires the following permissions:
```
dcos:adminrouter:ops:system-metrics full
dcos:adminrouter:ops:mesos full
```
Follow the directions to [create a service account and assign permissions](https://docs.mesosphere.com/1.10/security/service-auth/custom-service-auth/).
Quick configuration using the Enterprise CLI:
```
dcos security org service-accounts keypair telegraf-sa-key.pem telegraf-sa-cert.pem
dcos security org service-accounts create -p telegraf-sa-cert.pem -d "Telegraf DC/OS input plugin" telegraf
dcos security org users grant telegraf dcos:adminrouter:ops:system-metrics full
dcos security org users grant telegraf dcos:adminrouter:ops:mesos full
```
#### Open Source Authentication
The Open Source DC/OS does not provide service accounts. Instead you can use
of the following options:
1. [Disable authentication](https://dcos.io/docs/1.10/security/managing-authentication/#authentication-opt-out)
2. Use the `token_file` parameter to read a authentication token from a file.
Then `token_file` can be set by using the [dcos cli] to login periodically.
The cli can login for at most XXX days, you will need to ensure the cli
performs a new login before this time expires.
```
dcos auth login --username foo --password bar
dcos config show core.dcos_acs_token > ~/.dcos/token
```
Another option to create a `token_file` is to generate a token using the
cluster secret. This will allow you to set the expiration date manually or
even create a never expiring token. However, if the cluster secret or the
token is compromised it cannot be revoked and may require a full reinstall of
the cluster. For more information on this technique reference
[this blog post](https://medium.com/@richardgirges/authenticating-open-source-dc-os-with-third-party-services-125fa33a5add).
### Metrics:
Please consult the [Metrics Reference](https://docs.mesosphere.com/1.10/metrics/reference/)
for details on interprete field interpretation.
- dcos_node
- tags:
- cluster
- hostname
- path (filesystem fields only)
- interface (network fields only)
- fields:
- system_uptime (float)
- cpu_cores (float)
- cpu_total (float)
- cpu_user (float)
- cpu_system (float)
- cpu_idle (float)
- cpu_wait (float)
- load_1min (float)
- load_5min (float)
- load_15min (float)
- filesystem_capacity_total_bytes (int)
- filesystem_capacity_used_bytes (int)
- filesystem_capacity_free_bytes (int)
- filesystem_inode_total (float)
- filesystem_inode_used (float)
- filesystem_inode_free (float)
- memory_total_bytes (int)
- memory_free_bytes (int)
- memory_buffers_bytes (int)
- memory_cached_bytes (int)
- swap_total_bytes (int)
- swap_free_bytes (int)
- swap_used_bytes (int)
- network_in_bytes (int)
- network_out_bytes (int)
- network_in_packets (float)
- network_out_packets (float)
- network_in_dropped (float)
- network_out_dropped (float)
- network_in_errors (float)
- network_out_errors (float)
- process_count (float)
- dcos_container
- tags:
- cluster
- hostname
- container_id
- task_name
- fields:
- cpus_limit (float)
- cpus_system_time (float)
- cpus_throttled_time (float)
- cpus_user_time (float)
- disk_limit_bytes (int)
- disk_used_bytes (int)
- mem_limit_bytes (int)
- mem_total_bytes (int)
- net_rx_bytes (int)
- net_rx_dropped (float)
- net_rx_errors (float)
- net_rx_packets (float)
- net_tx_bytes (int)
- net_tx_dropped (float)
- net_tx_errors (float)
- net_tx_packets (float)
- dcos_app
- tags:
- cluster
- hostname
- container_id
- task_name
- fields:
- fields are application specific
### Example Output:
```
dcos_node,cluster=enterprise,hostname=192.168.122.18,path=/boot filesystem_capacity_free_bytes=918188032i,filesystem_capacity_total_bytes=1063256064i,filesystem_capacity_used_bytes=145068032i,filesystem_inode_free=523958,filesystem_inode_total=524288,filesystem_inode_used=330 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=dummy0 network_in_bytes=0i,network_in_dropped=0,network_in_errors=0,network_in_packets=0,network_out_bytes=0i,network_out_dropped=0,network_out_errors=0,network_out_packets=0 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=docker0 network_in_bytes=0i,network_in_dropped=0,network_in_errors=0,network_in_packets=0,network_out_bytes=0i,network_out_dropped=0,network_out_errors=0,network_out_packets=0 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18 cpu_cores=2,cpu_idle=81.62,cpu_system=4.19,cpu_total=13.670000000000002,cpu_user=9.48,cpu_wait=0,load_15min=0.7,load_1min=0.22,load_5min=0.6,memory_buffers_bytes=970752i,memory_cached_bytes=1830473728i,memory_free_bytes=1178636288i,memory_total_bytes=3975073792i,process_count=198,swap_free_bytes=859828224i,swap_total_bytes=859828224i,swap_used_bytes=0i,system_uptime=18874 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=lo network_in_bytes=1090992450i,network_in_dropped=0,network_in_errors=0,network_in_packets=1546938,network_out_bytes=1090992450i,network_out_dropped=0,network_out_errors=0,network_out_packets=1546938 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,path=/ filesystem_capacity_free_bytes=1668378624i,filesystem_capacity_total_bytes=6641680384i,filesystem_capacity_used_bytes=4973301760i,filesystem_inode_free=3107856,filesystem_inode_total=3248128,filesystem_inode_used=140272 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=minuteman network_in_bytes=0i,network_in_dropped=0,network_in_errors=0,network_in_packets=0,network_out_bytes=210i,network_out_dropped=0,network_out_errors=0,network_out_packets=3 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=eth0 network_in_bytes=539886216i,network_in_dropped=1,network_in_errors=0,network_in_packets=979808,network_out_bytes=112395836i,network_out_dropped=0,network_out_errors=0,network_out_packets=891239 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=spartan network_in_bytes=0i,network_in_dropped=0,network_in_errors=0,network_in_packets=0,network_out_bytes=210i,network_out_dropped=0,network_out_errors=0,network_out_packets=3 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,path=/var/lib/docker/overlay filesystem_capacity_free_bytes=1668378624i,filesystem_capacity_total_bytes=6641680384i,filesystem_capacity_used_bytes=4973301760i,filesystem_inode_free=3107856,filesystem_inode_total=3248128,filesystem_inode_used=140272 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=vtep1024 network_in_bytes=0i,network_in_dropped=0,network_in_errors=0,network_in_packets=0,network_out_bytes=0i,network_out_dropped=0,network_out_errors=0,network_out_packets=0 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,path=/var/lib/docker/plugins filesystem_capacity_free_bytes=1668378624i,filesystem_capacity_total_bytes=6641680384i,filesystem_capacity_used_bytes=4973301760i,filesystem_inode_free=3107856,filesystem_inode_total=3248128,filesystem_inode_used=140272 1511859222000000000
dcos_node,cluster=enterprise,hostname=192.168.122.18,interface=d-dcos network_in_bytes=0i,network_in_dropped=0,network_in_errors=0,network_in_packets=0,network_out_bytes=0i,network_out_dropped=0,network_out_errors=0,network_out_packets=0 1511859222000000000
dcos_app,cluster=enterprise,container_id=9a78d34a-3bbf-467e-81cf-a57737f154ee,hostname=192.168.122.18 container_received_bytes_per_sec=0,container_throttled_bytes_per_sec=0 1511859222000000000
dcos_container,cluster=enterprise,container_id=cbf19b77-3b8d-4bcf-b81f-824b67279629,hostname=192.168.122.18 cpus_limit=0.3,cpus_system_time=307.31,cpus_throttled_time=102.029930607,cpus_user_time=268.57,disk_limit_bytes=268435456i,disk_used_bytes=30953472i,mem_limit_bytes=570425344i,mem_total_bytes=13316096i,net_rx_bytes=0i,net_rx_dropped=0,net_rx_errors=0,net_rx_packets=0,net_tx_bytes=0i,net_tx_dropped=0,net_tx_errors=0,net_tx_packets=0 1511859222000000000
dcos_app,cluster=enterprise,container_id=cbf19b77-3b8d-4bcf-b81f-824b67279629,hostname=192.168.122.18 container_received_bytes_per_sec=0,container_throttled_bytes_per_sec=0 1511859222000000000
dcos_container,cluster=enterprise,container_id=5725e219-f66e-40a8-b3ab-519d85f4c4dc,hostname=192.168.122.18,task_name=hello-world cpus_limit=0.6,cpus_system_time=25.6,cpus_throttled_time=327.977109217,cpus_user_time=566.54,disk_limit_bytes=0i,disk_used_bytes=0i,mem_limit_bytes=1107296256i,mem_total_bytes=335941632i,net_rx_bytes=0i,net_rx_dropped=0,net_rx_errors=0,net_rx_packets=0,net_tx_bytes=0i,net_tx_dropped=0,net_tx_errors=0,net_tx_packets=0 1511859222000000000
dcos_app,cluster=enterprise,container_id=5725e219-f66e-40a8-b3ab-519d85f4c4dc,hostname=192.168.122.18 container_received_bytes_per_sec=0,container_throttled_bytes_per_sec=0 1511859222000000000
dcos_app,cluster=enterprise,container_id=c76e1488-4fb7-4010-a4cf-25725f8173f9,hostname=192.168.122.18 container_received_bytes_per_sec=0,container_throttled_bytes_per_sec=0 1511859222000000000
dcos_container,cluster=enterprise,container_id=cbe0b2f9-061f-44ac-8f15-4844229e8231,hostname=192.168.122.18,task_name=telegraf cpus_limit=0.2,cpus_system_time=8.109999999,cpus_throttled_time=93.183916045,cpus_user_time=17.97,disk_limit_bytes=0i,disk_used_bytes=0i,mem_limit_bytes=167772160i,mem_total_bytes=0i,net_rx_bytes=0i,net_rx_dropped=0,net_rx_errors=0,net_rx_packets=0,net_tx_bytes=0i,net_tx_dropped=0,net_tx_errors=0,net_tx_packets=0 1511859222000000000
dcos_container,cluster=enterprise,container_id=b64115de-3d2a-431d-a805-76e7c46453f1,hostname=192.168.122.18 cpus_limit=0.2,cpus_system_time=2.69,cpus_throttled_time=20.064861214,cpus_user_time=6.56,disk_limit_bytes=268435456i,disk_used_bytes=29360128i,mem_limit_bytes=297795584i,mem_total_bytes=13733888i,net_rx_bytes=0i,net_rx_dropped=0,net_rx_errors=0,net_rx_packets=0,net_tx_bytes=0i,net_tx_dropped=0,net_tx_errors=0,net_tx_packets=0 1511859222000000000
dcos_app,cluster=enterprise,container_id=b64115de-3d2a-431d-a805-76e7c46453f1,hostname=192.168.122.18 container_received_bytes_per_sec=0,container_throttled_bytes_per_sec=0 1511859222000000000
```

332
plugins/inputs/dcos/client.go Normal file
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@ -0,0 +1,332 @@
package dcos
import (
"bytes"
"context"
"crypto/tls"
"encoding/json"
"fmt"
"net/http"
"net/url"
"time"
jwt "github.com/dgrijalva/jwt-go"
)
const (
// How long to stayed logged in for
loginDuration = 65 * time.Minute
)
// Client is an interface for communicating with the DC/OS API.
type Client interface {
SetToken(token string)
Login(ctx context.Context, sa *ServiceAccount) (*AuthToken, error)
GetSummary(ctx context.Context) (*Summary, error)
GetContainers(ctx context.Context, node string) ([]Container, error)
GetNodeMetrics(ctx context.Context, node string) (*Metrics, error)
GetContainerMetrics(ctx context.Context, node, container string) (*Metrics, error)
GetAppMetrics(ctx context.Context, node, container string) (*Metrics, error)
}
type APIError struct {
StatusCode int
Title string
Description string
}
// Login is request data for logging in.
type Login struct {
UID string `json:"uid"`
Exp int64 `json:"exp"`
Token string `json:"token"`
}
// LoginError is the response when login fails.
type LoginError struct {
Title string `json:"title"`
Description string `json:"description"`
}
// LoginAuth is the response to a successful login.
type LoginAuth struct {
Token string `json:"token"`
}
// Slave is a node in the cluster.
type Slave struct {
ID string `json:"id"`
}
// Summary provides high level cluster wide information.
type Summary struct {
Cluster string
Slaves []Slave
}
// Container is a container on a node.
type Container struct {
ID string
}
type DataPoint struct {
Name string `json:"name"`
Tags map[string]string `json:"tags"`
Unit string `json:"unit"`
Value float64 `json:"value"`
}
// Metrics are the DCOS metrics
type Metrics struct {
Datapoints []DataPoint `json:"datapoints"`
Dimensions map[string]interface{} `json:"dimensions"`
}
// AuthToken is the authentication token.
type AuthToken struct {
Text string
Expire time.Time
}
// ClusterClient is a Client that uses the cluster URL.
type ClusterClient struct {
clusterURL *url.URL
httpClient *http.Client
credentials *Credentials
token string
semaphore chan struct{}
}
type claims struct {
UID string `json:"uid"`
jwt.StandardClaims
}
func (e APIError) Error() string {
if e.Description != "" {
return fmt.Sprintf("%s: %s", e.Title, e.Description)
}
return e.Title
}
func NewClusterClient(
clusterURL *url.URL,
timeout time.Duration,
maxConns int,
tlsConfig *tls.Config,
) *ClusterClient {
httpClient := &http.Client{
Transport: &http.Transport{
MaxIdleConns: maxConns,
TLSClientConfig: tlsConfig,
},
Timeout: timeout,
}
semaphore := make(chan struct{}, maxConns)
c := &ClusterClient{
clusterURL: clusterURL,
httpClient: httpClient,
semaphore: semaphore,
}
return c
}
func (c *ClusterClient) SetToken(token string) {
c.token = token
}
func (c *ClusterClient) Login(ctx context.Context, sa *ServiceAccount) (*AuthToken, error) {
token, err := c.createLoginToken(sa)
if err != nil {
return nil, err
}
exp := time.Now().Add(loginDuration)
body := &Login{
UID: sa.AccountID,
Exp: exp.Unix(),
Token: token,
}
octets, err := json.Marshal(body)
if err != nil {
return nil, err
}
req, err := http.NewRequest("POST", c.url("/acs/api/v1/auth/login"), bytes.NewBuffer(octets))
if err != nil {
return nil, err
}
req.Header.Add("Content-Type", "application/json")
req = req.WithContext(ctx)
resp, err := c.httpClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusOK {
auth := &LoginAuth{}
dec := json.NewDecoder(resp.Body)
err = dec.Decode(auth)
if err != nil {
return nil, err
}
token := &AuthToken{
Text: auth.Token,
Expire: exp,
}
return token, nil
}
loginError := &LoginError{}
dec := json.NewDecoder(resp.Body)
err = dec.Decode(loginError)
if err != nil {
err := &APIError{
StatusCode: resp.StatusCode,
Title: resp.Status,
}
return nil, err
}
err = &APIError{
StatusCode: resp.StatusCode,
Title: loginError.Title,
Description: loginError.Description,
}
return nil, err
}
func (c *ClusterClient) GetSummary(ctx context.Context) (*Summary, error) {
summary := &Summary{}
err := c.doGet(ctx, c.url("/mesos/master/state-summary"), summary)
if err != nil {
return nil, err
}
return summary, nil
}
func (c *ClusterClient) GetContainers(ctx context.Context, node string) ([]Container, error) {
list := []string{}
path := fmt.Sprintf("/system/v1/agent/%s/metrics/v0/containers", node)
err := c.doGet(ctx, c.url(path), &list)
if err != nil {
return nil, err
}
containers := make([]Container, 0, len(list))
for _, c := range list {
containers = append(containers, Container{ID: c})
}
return containers, nil
}
func (c *ClusterClient) getMetrics(ctx context.Context, url string) (*Metrics, error) {
metrics := &Metrics{}
err := c.doGet(ctx, url, metrics)
if err != nil {
return nil, err
}
return metrics, nil
}
func (c *ClusterClient) GetNodeMetrics(ctx context.Context, node string) (*Metrics, error) {
path := fmt.Sprintf("/system/v1/agent/%s/metrics/v0/node", node)
return c.getMetrics(ctx, c.url(path))
}
func (c *ClusterClient) GetContainerMetrics(ctx context.Context, node, container string) (*Metrics, error) {
path := fmt.Sprintf("/system/v1/agent/%s/metrics/v0/containers/%s", node, container)
return c.getMetrics(ctx, c.url(path))
}
func (c *ClusterClient) GetAppMetrics(ctx context.Context, node, container string) (*Metrics, error) {
path := fmt.Sprintf("/system/v1/agent/%s/metrics/v0/containers/%s/app", node, container)
return c.getMetrics(ctx, c.url(path))
}
func createGetRequest(url string, token string) (*http.Request, error) {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
if token != "" {
req.Header.Add("Authorization", "token="+token)
}
req.Header.Add("Accept", "application/json")
return req, nil
}
func (c *ClusterClient) doGet(ctx context.Context, url string, v interface{}) error {
req, err := createGetRequest(url, c.token)
if err != nil {
return err
}
select {
case c.semaphore <- struct{}{}:
break
case <-ctx.Done():
return ctx.Err()
}
resp, err := c.httpClient.Do(req.WithContext(ctx))
if err != nil {
<-c.semaphore
return err
}
defer func() {
resp.Body.Close()
<-c.semaphore
}()
// Clear invalid token if unauthorized
if resp.StatusCode == http.StatusUnauthorized {
c.token = ""
}
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
return &APIError{
StatusCode: resp.StatusCode,
Title: resp.Status,
}
}
if resp.StatusCode == http.StatusNoContent {
return nil
}
err = json.NewDecoder(resp.Body).Decode(v)
return err
}
func (c *ClusterClient) url(path string) string {
url := c.clusterURL
url.Path = path
return url.String()
}
func (c *ClusterClient) createLoginToken(sa *ServiceAccount) (string, error) {
token := jwt.NewWithClaims(jwt.SigningMethodRS256, claims{
UID: sa.AccountID,
StandardClaims: jwt.StandardClaims{
// How long we have to login with this token
ExpiresAt: int64(5 * time.Minute / time.Second),
},
})
return token.SignedString(sa.PrivateKey)
}

232
plugins/inputs/dcos/client_test.go Normal file
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package dcos
import (
"context"
"fmt"
"net/http"
"net/http/httptest"
"net/url"
"testing"
jwt "github.com/dgrijalva/jwt-go"
"github.com/stretchr/testify/require"
)
const (
privateKey = `-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----`
)
func TestLogin(t *testing.T) {
var tests = []struct {
name string
responseCode int
responseBody string
expectedError error
expectedToken string
}{
{
name: "Login successful",
responseCode: 200,
responseBody: `{"token": "XXX.YYY.ZZZ"}`,
expectedError: nil,
expectedToken: "XXX.YYY.ZZZ",
},
{
name: "Unauthorized Error",
responseCode: http.StatusUnauthorized,
responseBody: `{"title": "x", "description": "y"}`,
expectedError: &APIError{http.StatusUnauthorized, "x", "y"},
expectedToken: "",
},
}
key, err := jwt.ParseRSAPrivateKeyFromPEM([]byte(privateKey))
require.NoError(t, err)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(tt.responseCode)
fmt.Fprintln(w, tt.responseBody)
})
ts := httptest.NewServer(handler)
u, err := url.Parse(ts.URL)
require.NoError(t, err)
ctx := context.Background()
sa := &ServiceAccount{
AccountID: "telegraf",
PrivateKey: key,
}
client := NewClusterClient(u, defaultResponseTimeout, 1, nil)
auth, err := client.Login(ctx, sa)
require.Equal(t, tt.expectedError, err)
if tt.expectedToken != "" {
require.Equal(t, tt.expectedToken, auth.Text)
} else {
require.Nil(t, auth)
}
ts.Close()
})
}
}
func TestGetSummary(t *testing.T) {
var tests = []struct {
name string
responseCode int
responseBody string
expectedValue *Summary
expectedError error
}{
{
name: "No nodes",
responseCode: 200,
responseBody: `{"cluster": "a", "slaves": []}`,
expectedValue: &Summary{Cluster: "a", Slaves: []Slave{}},
expectedError: nil,
},
{
name: "Unauthorized Error",
responseCode: http.StatusUnauthorized,
responseBody: `<html></html>`,
expectedValue: nil,
expectedError: &APIError{StatusCode: http.StatusUnauthorized, Title: "401 Unauthorized"},
},
{
name: "Has nodes",
responseCode: 200,
responseBody: `{"cluster": "a", "slaves": [{"id": "a"}, {"id": "b"}]}`,
expectedValue: &Summary{
Cluster: "a",
Slaves: []Slave{
Slave{ID: "a"},
Slave{ID: "b"},
},
},
expectedError: nil,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// check the path
w.WriteHeader(tt.responseCode)
fmt.Fprintln(w, tt.responseBody)
})
ts := httptest.NewServer(handler)
u, err := url.Parse(ts.URL)
require.NoError(t, err)
ctx := context.Background()
client := NewClusterClient(u, defaultResponseTimeout, 1, nil)
summary, err := client.GetSummary(ctx)
require.Equal(t, tt.expectedError, err)
require.Equal(t, tt.expectedValue, summary)
ts.Close()
})
}
}
func TestGetNodeMetrics(t *testing.T) {
var tests = []struct {
name string
responseCode int
responseBody string
expectedValue *Metrics
expectedError error
}{
{
name: "Empty Body",
responseCode: 200,
responseBody: `{}`,
expectedValue: &Metrics{},
expectedError: nil,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// check the path
w.WriteHeader(tt.responseCode)
fmt.Fprintln(w, tt.responseBody)
})
ts := httptest.NewServer(handler)
u, err := url.Parse(ts.URL)
require.NoError(t, err)
ctx := context.Background()
client := NewClusterClient(u, defaultResponseTimeout, 1, nil)
m, err := client.GetNodeMetrics(ctx, "foo")
require.Equal(t, tt.expectedError, err)
require.Equal(t, tt.expectedValue, m)
ts.Close()
})
}
}
func TestGetContainerMetrics(t *testing.T) {
var tests = []struct {
name string
responseCode int
responseBody string
expectedValue *Metrics
expectedError error
}{
{
name: "204 No Contents",
responseCode: 204,
responseBody: ``,
expectedValue: &Metrics{},
expectedError: nil,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// check the path
w.WriteHeader(tt.responseCode)
fmt.Fprintln(w, tt.responseBody)
})
ts := httptest.NewServer(handler)
u, err := url.Parse(ts.URL)
require.NoError(t, err)
ctx := context.Background()
client := NewClusterClient(u, defaultResponseTimeout, 1, nil)
m, err := client.GetContainerMetrics(ctx, "foo", "bar")
require.Equal(t, tt.expectedError, err)
require.Equal(t, tt.expectedValue, m)
ts.Close()
})
}
}

72
plugins/inputs/dcos/creds.go Normal file
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package dcos
import (
"context"
"crypto/rsa"
"fmt"
"io/ioutil"
"strings"
"time"
"unicode/utf8"
)
const (
// How long before expiration to renew token
relogDuration = 5 * time.Minute
)
type Credentials interface {
Token(ctx context.Context, client Client) (string, error)
IsExpired() bool
}
type ServiceAccount struct {
AccountID string
PrivateKey *rsa.PrivateKey
auth *AuthToken
}
type TokenCreds struct {
Path string
}
type NullCreds struct {
}
func (c *ServiceAccount) Token(ctx context.Context, client Client) (string, error) {
auth, err := client.Login(ctx, c)
if err != nil {
return "", err
}
c.auth = auth
return auth.Text, nil
}
func (c *ServiceAccount) IsExpired() bool {
return c.auth.Text != "" || c.auth.Expire.Add(relogDuration).After(time.Now())
}
func (c *TokenCreds) Token(ctx context.Context, client Client) (string, error) {
octets, err := ioutil.ReadFile(c.Path)
if err != nil {
return "", fmt.Errorf("Error reading token file %q: %s", c.Path, err)
}
if !utf8.Valid(octets) {
return "", fmt.Errorf("Token file does not contain utf-8 encoded text: %s", c.Path)
}
token := strings.TrimSpace(string(octets))
return token, nil
}
func (c *TokenCreds) IsExpired() bool {
return true
}
func (c *NullCreds) Token(ctx context.Context, client Client) (string, error) {
return "", nil
}
func (c *NullCreds) IsExpired() bool {
return true
}

435
plugins/inputs/dcos/dcos.go Normal file
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package dcos
import (
"context"
"io/ioutil"
"net/url"
"sort"
"strings"
"sync"
"time"
jwt "github.com/dgrijalva/jwt-go"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/filter"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/plugins/inputs"
)
const (
defaultMaxConnections = 10
defaultResponseTimeout = 20 * time.Second
)
var (
nodeDimensions = []string{
"hostname",
"path",
"interface",
}
containerDimensions = []string{
"hostname",
"container_id",
"task_name",
}
appDimensions = []string{
"hostname",
"container_id",
"task_name",
}
)
type DCOS struct {
ClusterURL string `toml:"cluster_url"`
ServiceAccountID string `toml:"service_account_id"`
ServiceAccountPrivateKey string
TokenFile string
NodeInclude []string
NodeExclude []string
ContainerInclude []string
ContainerExclude []string
AppInclude []string
AppExclude []string
MaxConnections int
ResponseTimeout internal.Duration
SSLCA string `toml:"ssl_ca"`
SSLCert string `toml:"ssl_cert"`
SSLKey string `toml:"ssl_key"`
InsecureSkipVerify bool `toml:"insecure_skip_verify"`
client Client
creds Credentials
initialized bool
nodeFilter filter.Filter
containerFilter filter.Filter
appFilter filter.Filter
taskNameFilter filter.Filter
}
func (d *DCOS) Description() string {
return "Input plugin for DC/OS metrics"
}
var sampleConfig = `
## The DC/OS cluster URL.
cluster_url = "https://dcos-ee-master-1"
## The ID of the service account.
service_account_id = "telegraf"
## The private key file for the service account.
service_account_private_key = "/etc/telegraf/telegraf-sa-key.pem"
## Path containing login token. If set, will read on every gather.
# token_file = "/home/dcos/.dcos/token"
## In all filter options if both include and exclude are empty all items
## will be collected. Arrays may contain glob patterns.
##
## Node IDs to collect metrics from. If a node is excluded, no metrics will
## be collected for its containers or apps.
# node_include = []
# node_exclude = []
## Container IDs to collect container metrics from.
# container_include = []
# container_exclude = []
## Container IDs to collect app metrics from.
# app_include = []
# app_exclude = []
## Maximum concurrent connections to the cluster.
# max_connections = 10
## Maximum time to receive a response from cluster.
# response_timeout = "20s"
## Optional SSL Config
# ssl_ca = "/etc/telegraf/ca.pem"
# ssl_cert = "/etc/telegraf/cert.pem"
# ssl_key = "/etc/telegraf/key.pem"
## If false, skip chain & host verification
# insecure_skip_verify = true
## Recommended filtering to reduce series cardinality.
# [inputs.dcos.tagdrop]
# path = ["/var/lib/mesos/slave/slaves/*"]
`
func (d *DCOS) SampleConfig() string {
return sampleConfig
}
func (d *DCOS) Gather(acc telegraf.Accumulator) error {
err := d.init()
if err != nil {
return err
}
ctx := context.Background()
token, err := d.creds.Token(ctx, d.client)
if err != nil {
return err
}
d.client.SetToken(token)
summary, err := d.client.GetSummary(ctx)
if err != nil {
return err
}
var wg sync.WaitGroup
for _, node := range summary.Slaves {
wg.Add(1)
go func(node string) {
defer wg.Done()
d.GatherNode(ctx, acc, summary.Cluster, node)
}(node.ID)
}
wg.Wait()
return nil
}
func (d *DCOS) GatherNode(ctx context.Context, acc telegraf.Accumulator, cluster, node string) {
if !d.nodeFilter.Match(node) {
return
}
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
m, err := d.client.GetNodeMetrics(ctx, node)
if err != nil {
acc.AddError(err)
return
}
d.addNodeMetrics(acc, cluster, m)
}()
d.GatherContainers(ctx, acc, cluster, node)
wg.Wait()
}
func (d *DCOS) GatherContainers(ctx context.Context, acc telegraf.Accumulator, cluster, node string) {
containers, err := d.client.GetContainers(ctx, node)
if err != nil {
acc.AddError(err)
return
}
var wg sync.WaitGroup
for _, container := range containers {
if d.containerFilter.Match(container.ID) {
wg.Add(1)
go func(container string) {
defer wg.Done()
m, err := d.client.GetContainerMetrics(ctx, node, container)
if err != nil {
if err, ok := err.(APIError); ok && err.StatusCode == 404 {
return
}
acc.AddError(err)
return
}
d.addContainerMetrics(acc, cluster, m)
}(container.ID)
}
if d.appFilter.Match(container.ID) {
wg.Add(1)
go func(container string) {
defer wg.Done()
m, err := d.client.GetAppMetrics(ctx, node, container)
if err != nil {
if err, ok := err.(APIError); ok && err.StatusCode == 404 {
return
}
acc.AddError(err)
return
}
d.addAppMetrics(acc, cluster, m)
}(container.ID)
}
}
wg.Wait()
}
type point struct {
tags map[string]string
labels map[string]string
fields map[string]interface{}
}
func (d *DCOS) createPoints(acc telegraf.Accumulator, m *Metrics) []*point {
points := make(map[string]*point)
for _, dp := range m.Datapoints {
fieldKey := strings.Replace(dp.Name, ".", "_", -1)
tags := dp.Tags
if tags == nil {
tags = make(map[string]string)
}
if dp.Unit == "bytes" && !strings.HasSuffix(fieldKey, "_bytes") {
fieldKey = fieldKey + "_bytes"
}
if strings.HasPrefix(fieldKey, "dcos_metrics_module_") {
fieldKey = strings.TrimPrefix(fieldKey, "dcos_metrics_module_")
}
tagset := make([]string, 0, len(tags))
for k, v := range tags {
tagset = append(tagset, k+"="+v)
}
sort.Strings(tagset)
seriesParts := make([]string, 0, len(tagset))
seriesParts = append(seriesParts, tagset...)
seriesKey := strings.Join(seriesParts, ",")
p, ok := points[seriesKey]
if !ok {
p = &point{}
p.tags = tags
p.labels = make(map[string]string)
p.fields = make(map[string]interface{})
points[seriesKey] = p
}
if dp.Unit == "bytes" {
p.fields[fieldKey] = int64(dp.Value)
} else {
p.fields[fieldKey] = dp.Value
}
}
results := make([]*point, 0, len(points))
for _, p := range points {
for k, v := range m.Dimensions {
switch v := v.(type) {
case string:
p.tags[k] = v
case map[string]string:
if k == "labels" {
for k, v := range v {
p.labels[k] = v
}
}
}
}
results = append(results, p)
}
return results
}
func (d *DCOS) addMetrics(acc telegraf.Accumulator, cluster, mname string, m *Metrics, tagDimensions []string) {
tm := time.Now()
points := d.createPoints(acc, m)
for _, p := range points {
tags := make(map[string]string)
tags["cluster"] = cluster
for _, tagkey := range tagDimensions {
v, ok := p.tags[tagkey]
if ok {
tags[tagkey] = v
}
}
for k, v := range p.labels {
tags[k] = v
}
acc.AddFields(mname, p.fields, tags, tm)
}
}
func (d *DCOS) addNodeMetrics(acc telegraf.Accumulator, cluster string, m *Metrics) {
d.addMetrics(acc, cluster, "dcos_node", m, nodeDimensions)
}
func (d *DCOS) addContainerMetrics(acc telegraf.Accumulator, cluster string, m *Metrics) {
d.addMetrics(acc, cluster, "dcos_container", m, containerDimensions)
}
func (d *DCOS) addAppMetrics(acc telegraf.Accumulator, cluster string, m *Metrics) {
d.addMetrics(acc, cluster, "dcos_app", m, appDimensions)
}
func (d *DCOS) init() error {
if !d.initialized {
err := d.createFilters()
if err != nil {
return err
}
if d.client == nil {
client, err := d.createClient()
if err != nil {
return err
}
d.client = client
}
if d.creds == nil {
creds, err := d.createCredentials()
if err != nil {
return err
}
d.creds = creds
}
d.initialized = true
}
return nil
}
func (d *DCOS) createClient() (Client, error) {
tlsCfg, err := internal.GetTLSConfig(
d.SSLCert, d.SSLKey, d.SSLCA, d.InsecureSkipVerify)
if err != nil {
return nil, err
}
url, err := url.Parse(d.ClusterURL)
if err != nil {
return nil, err
}
client := NewClusterClient(
url,
d.ResponseTimeout.Duration,
d.MaxConnections,
tlsCfg,
)
return client, nil
}
func (d *DCOS) createCredentials() (Credentials, error) {
if d.ServiceAccountID != "" && d.ServiceAccountPrivateKey != "" {
bs, err := ioutil.ReadFile(d.ServiceAccountPrivateKey)
if err != nil {
return nil, err
}
privateKey, err := jwt.ParseRSAPrivateKeyFromPEM(bs)
if err != nil {
return nil, err
}
creds := &ServiceAccount{
AccountID: d.ServiceAccountID,
PrivateKey: privateKey,
}
return creds, nil
} else if d.TokenFile != "" {
creds := &TokenCreds{
Path: d.TokenFile,
}
return creds, nil
} else {
creds := &NullCreds{}
return creds, nil
}
}
func (d *DCOS) createFilters() error {
var err error
d.nodeFilter, err = filter.NewIncludeExcludeFilter(
d.NodeInclude, d.NodeExclude)
if err != nil {
return err
}
d.containerFilter, err = filter.NewIncludeExcludeFilter(
d.ContainerInclude, d.ContainerExclude)
if err != nil {
return err
}
d.appFilter, err = filter.NewIncludeExcludeFilter(
d.AppInclude, d.AppExclude)
if err != nil {
return err
}
return nil
}
func init() {
inputs.Add("dcos", func() telegraf.Input {
return &DCOS{
MaxConnections: defaultMaxConnections,
ResponseTimeout: internal.Duration{
Duration: defaultResponseTimeout,
},
}
})
}

441
plugins/inputs/dcos/dcos_test.go Normal file
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package dcos
import (
"context"
"fmt"
"testing"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/require"
)
type mockClient struct {
SetTokenF func(token string)
LoginF func(ctx context.Context, sa *ServiceAccount) (*AuthToken, error)
GetSummaryF func(ctx context.Context) (*Summary, error)
GetContainersF func(ctx context.Context, node string) ([]Container, error)
GetNodeMetricsF func(ctx context.Context, node string) (*Metrics, error)
GetContainerMetricsF func(ctx context.Context, node, container string) (*Metrics, error)
GetAppMetricsF func(ctx context.Context, node, container string) (*Metrics, error)
}
func (c *mockClient) SetToken(token string) {
c.SetTokenF(token)
}
func (c *mockClient) Login(ctx context.Context, sa *ServiceAccount) (*AuthToken, error) {
return c.LoginF(ctx, sa)
}
func (c *mockClient) GetSummary(ctx context.Context) (*Summary, error) {
return c.GetSummaryF(ctx)
}
func (c *mockClient) GetContainers(ctx context.Context, node string) ([]Container, error) {
return c.GetContainersF(ctx, node)
}
func (c *mockClient) GetNodeMetrics(ctx context.Context, node string) (*Metrics, error) {
return c.GetNodeMetricsF(ctx, node)
}
func (c *mockClient) GetContainerMetrics(ctx context.Context, node, container string) (*Metrics, error) {
return c.GetContainerMetricsF(ctx, node, container)
}
func (c *mockClient) GetAppMetrics(ctx context.Context, node, container string) (*Metrics, error) {
return c.GetAppMetricsF(ctx, node, container)
}
func TestAddNodeMetrics(t *testing.T) {
var tests = []struct {
name string
metrics *Metrics
check func(*testutil.Accumulator) []bool
}{
{
name: "basic datapoint conversion",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "process.count",
Unit: "count",
Value: 42.0,
},
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{acc.HasPoint(
"dcos_node",
map[string]string{
"cluster": "a",
},
"process_count", 42.0,
)}
},
},
{
name: "path added as tag",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "filesystem.inode.free",
Tags: map[string]string{
"path": "/var/lib",
},
Unit: "count",
Value: 42.0,
},
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{acc.HasPoint(
"dcos_node",
map[string]string{
"cluster": "a",
"path": "/var/lib",
},
"filesystem_inode_free", 42.0,
)}
},
},
{
name: "interface added as tag",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "network.out.dropped",
Tags: map[string]string{
"interface": "eth0",
},
Unit: "count",
Value: 42.0,
},
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{acc.HasPoint(
"dcos_node",
map[string]string{
"cluster": "a",
"interface": "eth0",
},
"network_out_dropped", 42.0,
)}
},
},
{
name: "bytes unit appended to fieldkey",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "network.in",
Tags: map[string]string{
"interface": "eth0",
},
Unit: "bytes",
Value: 42.0,
},
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{acc.HasPoint(
"dcos_node",
map[string]string{
"cluster": "a",
"interface": "eth0",
},
"network_in_bytes", int64(42),
)}
},
},
{
name: "dimensions added as tags",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "process.count",
Tags: map[string]string{},
Unit: "count",
Value: 42.0,
},
{
Name: "memory.total",
Tags: map[string]string{},
Unit: "bytes",
Value: 42,
},
},
Dimensions: map[string]interface{}{
"cluster_id": "c0760bbd-9e9d-434b-bd4a-39c7cdef8a63",
"hostname": "192.168.122.18",
"mesos_id": "2dfbbd28-29d2-411d-92c4-e2f84c38688e-S1",
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{
acc.HasPoint(
"dcos_node",
map[string]string{
"cluster": "a",
"hostname": "192.168.122.18",
},
"process_count", 42.0),
acc.HasPoint(
"dcos_node",
map[string]string{
"cluster": "a",
"hostname": "192.168.122.18",
},
"memory_total_bytes", int64(42)),
}
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var acc testutil.Accumulator
dcos := &DCOS{}
dcos.addNodeMetrics(&acc, "a", tt.metrics)
for i, ok := range tt.check(&acc) {
require.True(t, ok, fmt.Sprintf("Index was not true: %d", i))
}
})
}
}
func TestAddContainerMetrics(t *testing.T) {
var tests = []struct {
name string
metrics *Metrics
check func(*testutil.Accumulator) []bool
}{
{
name: "container",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "net.rx.errors",
Tags: map[string]string{
"container_id": "f25c457b-fceb-44f0-8f5b-38be34cbb6fb",
"executor_id": "telegraf.192fb45f-cc0c-11e7-af48-ea183c0b541a",
"executor_name": "Command Executor (Task: telegraf.192fb45f-cc0c-11e7-af48-ea183c0b541a) (Command: NO EXECUTABLE)",
"framework_id": "ab2f3a8b-06db-4e8c-95b6-fb1940874a30-0001",
"source": "telegraf.192fb45f-cc0c-11e7-af48-ea183c0b541a",
},
Unit: "count",
Value: 42.0,
},
},
Dimensions: map[string]interface{}{
"cluster_id": "c0760bbd-9e9d-434b-bd4a-39c7cdef8a63",
"container_id": "f25c457b-fceb-44f0-8f5b-38be34cbb6fb",
"executor_id": "telegraf.192fb45f-cc0c-11e7-af48-ea183c0b541a",
"framework_id": "ab2f3a8b-06db-4e8c-95b6-fb1940874a30-0001",
"framework_name": "marathon",
"framework_principal": "dcos_marathon",
"framework_role": "slave_public",
"hostname": "192.168.122.18",
"labels": map[string]string{
"DCOS_SPACE": "/telegraf",
},
"mesos_id": "2dfbbd28-29d2-411d-92c4-e2f84c38688e-S1",
"task_id": "telegraf.192fb45f-cc0c-11e7-af48-ea183c0b541a",
"task_name": "telegraf",
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{
acc.HasPoint(
"dcos_container",
map[string]string{
"cluster": "a",
"container_id": "f25c457b-fceb-44f0-8f5b-38be34cbb6fb",
"hostname": "192.168.122.18",
"task_name": "telegraf",
"DCOS_SPACE": "/telegraf",
},
"net_rx_errors",
42.0,
),
}
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var acc testutil.Accumulator
dcos := &DCOS{}
dcos.addContainerMetrics(&acc, "a", tt.metrics)
for i, ok := range tt.check(&acc) {
require.True(t, ok, fmt.Sprintf("Index was not true: %d", i))
}
})
}
}
func TestAddAppMetrics(t *testing.T) {
var tests = []struct {
name string
metrics *Metrics
check func(*testutil.Accumulator) []bool
}{
{
name: "tags are optional",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "dcos.metrics.module.container_throttled_bytes_per_sec",
Unit: "",
Value: 42.0,
},
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{
acc.HasPoint(
"dcos_app",
map[string]string{
"cluster": "a",
},
"container_throttled_bytes_per_sec", 42.0,
),
}
},
},
{
name: "dimensions are tagged",
metrics: &Metrics{
Datapoints: []DataPoint{
{
Name: "dcos.metrics.module.container_throttled_bytes_per_sec",
Unit: "",
Value: 42.0,
},
},
Dimensions: map[string]interface{}{
"cluster_id": "c0760bbd-9e9d-434b-bd4a-39c7cdef8a63",
"container_id": "02d31175-1c01-4459-8520-ef8b1339bc52",
"hostname": "192.168.122.18",
"mesos_id": "2dfbbd28-29d2-411d-92c4-e2f84c38688e-S1",
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{
acc.HasPoint(
"dcos_app",
map[string]string{
"cluster": "a",
"container_id": "02d31175-1c01-4459-8520-ef8b1339bc52",
"hostname": "192.168.122.18",
},
"container_throttled_bytes_per_sec", 42.0,
),
}
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var acc testutil.Accumulator
dcos := &DCOS{}
dcos.addAppMetrics(&acc, "a", tt.metrics)
for i, ok := range tt.check(&acc) {
require.True(t, ok, fmt.Sprintf("Index was not true: %d", i))
}
})
}
}
func TestGatherFilterNode(t *testing.T) {
var tests = []struct {
name string
nodeInclude []string
nodeExclude []string
client Client
check func(*testutil.Accumulator) []bool
}{
{
name: "cluster without nodes has no metrics",
client: &mockClient{
SetTokenF: func(token string) {},
GetSummaryF: func(ctx context.Context) (*Summary, error) {
return &Summary{
Cluster: "a",
Slaves: []Slave{},
}, nil
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{
acc.NMetrics() == 0,
}
},
},
{
name: "node include",
nodeInclude: []string{"x"},
client: &mockClient{
SetTokenF: func(token string) {},
GetSummaryF: func(ctx context.Context) (*Summary, error) {
return &Summary{
Cluster: "a",
Slaves: []Slave{
Slave{ID: "x"},
Slave{ID: "y"},
},
}, nil
},
GetContainersF: func(ctx context.Context, node string) ([]Container, error) {
return []Container{}, nil
},
GetNodeMetricsF: func(ctx context.Context, node string) (*Metrics, error) {
return &Metrics{
Datapoints: []DataPoint{
{
Name: "value",
Value: 42.0,
},
},
Dimensions: map[string]interface{}{
"hostname": "x",
},
}, nil
},
},
check: func(acc *testutil.Accumulator) []bool {
return []bool{
acc.HasPoint(
"dcos_node",
map[string]string{
"cluster": "a",
"hostname": "x",
},
"value", 42.0,
),
acc.NMetrics() == 1,
}
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var acc testutil.Accumulator
dcos := &DCOS{
NodeInclude: tt.nodeInclude,
NodeExclude: tt.nodeExclude,
client: tt.client,
}
err := dcos.Gather(&acc)
require.NoError(t, err)
for i, ok := range tt.check(&acc) {
require.True(t, ok, fmt.Sprintf("Index was not true: %d", i))
}
})
}
}