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TelemetryMetricsStatsd

Test

Telemetry.Metrics reporter for StatsD-compatible metric servers (including DataDog).

To use it, start the reporter with the start_link/1 function, providing it a list of Telemetry.Metrics metric definitions:

import Telemetry.Metrics

TelemetryMetricsStatsd.start_link(
  metrics: [
    counter("http.request.count"),
    sum("http.request.payload_size"),
    last_value("vm.memory.total")
  ]
)

or put it under a supervisor:

import Telemetry.Metrics

children = [
  {TelemetryMetricsStatsd, [
    metrics: [
      counter("http.request.count"),
      sum("http.request.payload_size"),
      last_value("vm.memory.total")
    ]
  ]}
]

Supervisor.start_link(children, ...)

By default the reporter sends metrics to 127.0.0.1:8125 - both hostname / IP and port number can be configured using the :host and :port options. You can also configure the prefix for all the published metrics using the :prefix option.

Note that the reporter doesn't aggregate metrics in-process - it sends metric updates to StatsD whenever a relevant Telemetry event is emitted.

DataDog integration

To use the reporter with DataDog, add a formatter: :datadog to the reporter's list of options:

import Telemetry.Metrics

children = [
  {TelemetryMetricsStatsd, [
    metrics: [
      counter("http.request.count"),
      sum("http.request.payload_size"),
      last_value("vm.memory.total")
    ],
    formatter: :datadog
  ]}
]

Supervisor.start_link(children, ...)

Installation

Just add the reporter to your dependencies in mix.exs:

defp deps do
  [
    {:telemetry_metrics_statsd, "~> 0.6.0"}
  ]
end

Copyright and License

TelemetryMetricsStatsd is copyright (c) 2019 Arkadiusz Gil.

TelemetryMetricsStatsd source code is released under MIT license.

See LICENSE for more information.

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Telemetry.Metrics reporter for StatsD-compatible metric servers

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