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scout_apm

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ScoutAPM agent for Phoenix & Elixir projects. For more information, visit https://www.scoutapm.com/agents/elixir-phoenix-monitoring.

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scout_apm lib scout_apm instruments ecto_telemetry.ex
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lib/scout_apm/instruments/ecto_telemetry.ex 

if Code.ensure_loaded?(Telemetry) do

  defmodule ScoutApm.Instruments.EctoTelemetry do

    @doc """

    Attaches an event handler for Ecto queries.



    Takes a fully namespaced Ecto.Repo module as the only argument. Example:



        ScoutApm.Instruments.EctoTelemetry.attach(MyApp.Repo)

    """

    def attach(repo_module) do

      query_event =

        repo_module

        |> Module.split()

        |> Enum.map(&(&1 |> Macro.underscore() |> String.to_atom()))

        |> Kernel.++([:query])



      Telemetry.attach(

        "scout-ecto-query-handler",

        query_event,

        ScoutApm.Instruments.EctoTelemetry,

        :handle_event,

        nil

      )

    end



    def handle_event([_app, _repo, :query], _value, metadata, _config) do

      ScoutApm.Instruments.EctoLogger.record(metadata)

    end

  end

end