## This Source Code Form is subject to the terms of the Mozilla Public
## License, v. 2.0. If a copy of the MPL was not distributed with this
## file, You can obtain one at https://mozilla.org/MPL/2.0/.
##
## Copyright (c) 2007-2023 VMware, Inc. or its affiliates.  All rights reserved.

defmodule RabbitMQ.CLI.Diagnostics.Commands.MaybeStuckCommand do
  @behaviour RabbitMQ.CLI.CommandBehaviour
  use RabbitMQ.CLI.DefaultOutput

  use RabbitMQ.CLI.Core.AcceptsDefaultSwitchesAndTimeout
  use RabbitMQ.CLI.Core.MergesNoDefaults
  use RabbitMQ.CLI.Core.AcceptsNoPositionalArguments
  use RabbitMQ.CLI.Core.RequiresRabbitAppRunning

  def run([], %{node: node_name, timeout: timeout}) do
    :rabbit_misc.rpc_call(node_name, :rabbit_diagnostics, :maybe_stuck, [], timeout)
  end

  def help_section(), do: :observability_and_health_checks

  def description(),
    do:
      "Detects Erlang processes (\"lightweight threads\") potentially not making progress on the target node"

  def usage, do: "maybe_stuck"

  def banner(_, %{node: node_name}) do
    "Asking node #{node_name} to detect potentially stuck Erlang processes..."
  end
end
