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telemetria

0.3.0
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The helper application that simplifies and standardizes telemetry usage.

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telemetria lib instrumenter.ex
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lib/instrumenter.ex 

defmodule Telemetria.Instrumenter do

  @moduledoc false



  require Logger

  use Boundary, deps: [Telemetria.ConfigProvider], exports: []



  @spec json_config :: keyword()

  def json_config, do: Telemetria.ConfigProvider.json_config!()



  @spec otp_app :: binary()

  def otp_app,

    do:

      Keyword.get(

        json_config(),

        :otp_app,

        Application.get_env(:telemetria, :otp_app, :telemetria)

      )



  @spec events :: [[atom()]]

  def events,

    do:

      Enum.to_list(

        MapSet.new(

          Keyword.get(json_config(), :events, []) ++ Application.get_env(:telemetria, :events, [])

        )

      )



  def setup() do

    Application.ensure_all_started(:telemetry)

    :telemetry.attach_many(Atom.to_string(otp_app()), events(), &handle_event/4, nil)

  end



  def handle_event(event, measurements, context, config) do

    {m, f, 4} = Application.get_env(:telemetria, :handler, {Telemetria.Handler, :handle_event, 4})

    apply(m, f, [event, measurements, context, config])

  end

end