defmodule Memex.Logger do @moduledoc """ Custom logger for telemetry events Oban implementation taken from https://hexdocs.pm/oban/Oban.html#module-reporting-errors """ require Logger def handle_event([:oban, :job, :exception], measure, %{stacktrace: stacktrace} = meta, _config) do data = get_oban_job_data(meta, measure) |> Map.put(:stacktrace, Exception.format_stacktrace(stacktrace)) |> pretty_encode() Logger.error(meta.reason, data: data) end def handle_event([:oban, :job, :start], measure, meta, _config) do data = get_oban_job_data(meta, measure) |> pretty_encode() Logger.info("Started oban job", data: data) end def handle_event([:oban, :job, :stop], measure, meta, _config) do data = get_oban_job_data(meta, measure) |> pretty_encode() Logger.info("Finished oban job", data: data) end def handle_event([:oban, :job, unhandled_event], measure, meta, _config) do data = get_oban_job_data(meta, measure) |> Map.put(:event, unhandled_event) |> pretty_encode() Logger.warning("Unhandled oban job event", data: data) end def handle_event(unhandled_event, measure, meta, config) do data = pretty_encode(%{ event: unhandled_event, meta: meta, measurements: measure, config: config }) Logger.warning("Unhandled telemetry event", data: data) end defp get_oban_job_data(%{job: job}, measure) do %{ job: job |> Map.take([:id, :args, :meta, :queue, :worker]), measurements: measure } end defp pretty_encode(data) do data |> Jason.encode!() |> Jason.Formatter.pretty_print() end end