httpjson

package
Version: v1.20.4 Latest Latest
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Published: Nov 17, 2021 License: MIT Imports: 13 Imported by: 160

README

HTTP JSON Input Plugin

DEPRECATED in Telegraf v1.6: Use HTTP input plugin as replacement.

The httpjson plugin collects data from HTTP URLs which respond with JSON. It flattens the JSON and finds all numeric values, treating them as floats.

Configuration:
[[inputs.httpjson]]
  ## NOTE This plugin only reads numerical measurements, strings and booleans
  ## will be ignored.

  ## Name for the service being polled.  Will be appended to the name of the
  ## measurement e.g. "httpjson_webserver_stats".
  ##
  ## Deprecated (1.3.0): Use name_override, name_suffix, name_prefix instead.
  name = "webserver_stats"

  ## URL of each server in the service's cluster
  servers = [
    "http://localhost:9999/stats/",
    "http://localhost:9998/stats/",
  ]
  ## Set response_timeout (default 5 seconds)
  response_timeout = "5s"

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

  ## Tags to extract from top-level of JSON server response.
  # tag_keys = [
  #   "my_tag_1",
  #   "my_tag_2"
  # ]

  ## Optional TLS Config
  # 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 Request Parameters (all values must be strings).  For "GET" requests, data
  ## will be included in the query.  For "POST" requests, data will be included
  ## in the request body as "x-www-form-urlencoded".
  # [inputs.httpjson.parameters]
  #   event_type = "cpu_spike"
  #   threshold = "0.75"

  ## HTTP Request Headers (all values must be strings).
  # [inputs.httpjson.headers]
  #   X-Auth-Token = "my-xauth-token"
  #   apiVersion = "v1"
Measurements & Fields:
  • httpjson
    • response_time (float): Response time in seconds

Additional fields are dependant on the response of the remote service being polled.

Tags:
  • All measurements have the following tags:
    • server: HTTP origin as defined in configuration as servers.

Any top level keys listed under tag_keys in the configuration are added as tags. Top level keys are defined as keys in the root level of the object in a single object response, or in the root level of each object within an array of objects.

Examples Output:

This plugin understands responses containing a single JSON object, or a JSON Array of Objects.

Object Output:

Given the following response body:

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

The following metric is produced:

httpjson,server=http://localhost:9999/stats/ b_d=0.1,a=0.5,b_e=5,response_time=0.001

Note that only numerical values are extracted and the type is float.

If tag_keys is included in the configuration:

[[inputs.httpjson]]
  tag_keys = ["service"]

Then the service tag will also be added:

httpjson,server=http://localhost:9999/stats/,service=service01 b_d=0.1,a=0.5,b_e=5,response_time=0.001

Array Output:

If the service returns an array of objects, one metric is be created for each object:

[
    {
        "service": "service01",
        "a": 0.5,
        "b": {
            "c": "some text",
            "d": 0.1,
            "e": 5
        }
    },
    {
        "service": "service02",
        "a": 0.6,
        "b": {
            "c": "some text",
            "d": 0.2,
            "e": 6
        }
    }
]

httpjson,server=http://localhost:9999/stats/,service=service01 a=0.5,b_d=0.1,b_e=5,response_time=0.003 httpjson,server=http://localhost:9999/stats/,service=service02 a=0.6,b_d=0.2,b_e=6,response_time=0.003

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type HTTPClient

type HTTPClient interface {
	// Returns the result of an http request
	//
	// Parameters:
	// req: HTTP request object
	//
	// Returns:
	// http.Response:  HTTP response object
	// error        :  Any error that may have occurred
	MakeRequest(req *http.Request) (*http.Response, error)

	SetHTTPClient(client *http.Client)
	HTTPClient() *http.Client
}

type HTTPJSON added in v1.18.0

type HTTPJSON struct {
	Name            string
	Servers         []string
	Method          string
	TagKeys         []string
	ResponseTimeout config.Duration
	Parameters      map[string]string
	Headers         map[string]string
	tls.ClientConfig
	// contains filtered or unexported fields
}

HTTPJSON struct

func (*HTTPJSON) Description added in v1.18.0

func (h *HTTPJSON) Description() string

func (*HTTPJSON) Gather added in v1.18.0

func (h *HTTPJSON) Gather(acc telegraf.Accumulator) error

Gathers data for all servers.

func (*HTTPJSON) SampleConfig added in v1.18.0

func (h *HTTPJSON) SampleConfig() string

type RealHTTPClient

type RealHTTPClient struct {
	// contains filtered or unexported fields
}

func (*RealHTTPClient) HTTPClient added in v1.14.0

func (c *RealHTTPClient) HTTPClient() *http.Client

func (*RealHTTPClient) MakeRequest

func (c *RealHTTPClient) MakeRequest(req *http.Request) (*http.Response, error)

func (*RealHTTPClient) SetHTTPClient added in v1.14.0

func (c *RealHTTPClient) SetHTTPClient(client *http.Client)

Source Files

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