100 lines
2.5 KiB
Elixir
100 lines
2.5 KiB
Elixir
defmodule FarmbotOS.Platform.Target.ShoehornHandler do
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@moduledoc """
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Custom shoehorn handler responsible for restarting farmbot applications
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in the correct order
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"""
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use Shoehorn.Handler
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require FarmbotTelemetry
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require FarmbotCore.Logger
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require Logger
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@impl true
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def init(_opts) do
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{:ok, %{restart_counts: 0}}
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end
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@impl true
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def application_exited(:nerves_runtime, _, state) do
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# https://github.com/nerves-project/nerves_runtime/issues/152
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_ =
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System.cmd("killall", ["-9", "kmsg_tailer"],
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into: IO.stream(:stdio, :line)
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)
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{:continue, state}
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end
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def application_exited(app, reason, %{restart_counts: count} = state)
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when count >= 5 and
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app in [
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:farmbot_core,
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:farmbot_ext,
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:farmbot
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] do
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error_log(
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"Farmbot app: #{app} exited #{count}: #{inspect(reason, limit: :infinity)}"
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)
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# Force a factory reset.
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FarmbotOS.System.factory_reset(
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"Farmbot app: #{app} exited #{count}: #{inspect(reason, limit: :infinity)}"
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)
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FarmbotTelemetry.event(:shoehorn, :application_exit, nil, application: app)
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{:continue, %{state | restart_counts: count + 1}}
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end
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def application_exited(app, reason, %{restart_counts: count} = state)
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when app in [
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:farmbot_core,
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:farmbot_ext,
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:farmbot
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] do
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error_log(
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"Farmbot app: #{app} exited #{count}: #{inspect(reason, limit: :infinity)}"
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)
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FarmbotTelemetry.event(:shoehorn, :application_exit, nil, application: app)
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with {:ok, _} <- Application.ensure_all_started(:farmbot_core),
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{:ok, _} <- Application.ensure_all_started(:farmbot_ext),
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{:ok, _} <- Application.ensure_all_started(:farmbot) do
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success_log("Recovered from application exit")
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end
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{:continue, %{state | restart_counts: count + 1}}
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end
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def application_exited(app, reason, state) do
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error_log(
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"Application stopped: #{inspect(app)} #{inspect(reason, limit: :infinity)}"
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)
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FarmbotTelemetry.event(:shoehorn, :application_exit, nil, application: app)
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# Application.ensure_all_started(app)
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{:continue, state}
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end
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def error_log(msg) do
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try do
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FarmbotCore.Logger.error(1, msg)
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:ok
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catch
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_, _ ->
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Logger.error(msg)
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end
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end
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def success_log(msg) do
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try do
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FarmbotCore.Logger.success(1, msg)
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:ok
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catch
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_, _ ->
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Logger.info(msg)
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end
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end
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end
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