defmodule Towerops.ErrorTrackerIgnorer do
  @moduledoc """
  Drops benign errors from ErrorTracker that occur during K8s pod shutdown.

  Matches the same patterns as `Towerops.HoneybadgerFilter` and
  `Towerops.LoggerFilters.drop_shutdown_errors/2`.
  """

  @behaviour ErrorTracker.Ignorer

  @impl true
  def ignore?(%ErrorTracker.Error{reason: reason}, _context) do
    shutdown_error?(reason)
  end

  defp shutdown_error?(reason) when is_binary(reason) do
    String.contains?(reason, "port_died") or
      String.contains?(reason, "write_failed") or
      String.contains?(reason, "epipe") or
      String.contains?(reason, "broken pipe")
  end

  defp shutdown_error?(_), do: false
end