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## The contents of this file are subject to the Mozilla Public License
## Version 1.1 (the "License"); you may not use this file except in
## compliance with the License. You may obtain a copy of the License
## at http://www.mozilla.org/MPL/
##
## Software distributed under the License is distributed on an "AS IS"
## basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
## the License for the specific language governing rights and
## limitations under the License.
##
## The Original Code is RabbitMQ.
##
## The Initial Developer of the Original Code is GoPivotal, Inc.
## Copyright (c) 2007-2019 Pivotal Software, Inc. All rights reserved.
defmodule RabbitMQ.CLI.Ctl.Commands.ShutdownCommand do
@behaviour RabbitMQ.CLI.CommandBehaviour
alias RabbitMQ.CLI.Core.OsPid
def switches() do
[timeout: :integer,
wait: :boolean]
end
def aliases(), do: [timeout: :t]
def merge_defaults(args, opts) do
{args, Map.merge(%{wait: true, timeout: 120}, opts)}
end
def validate([], %{wait: false}) do
:ok
end
def validate([], %{node: node_name, wait: true, timeout: timeout}) do
hostname = :inet_db.gethostname()
case :rabbit_misc.rpc_call(node_name, :inet_db, :gethostname, [], timeout) do
{:badrpc, _} = err -> {:error, err}
remote_hostname ->
case hostname == remote_hostname do
true -> :ok;
false ->
msg = "\nThis command can only --wait for shutdown of local nodes but node #{node_name} is remote (local hostname: #{hostname}, remote: #{remote_hostname}).\n" <>
"Pass --no-wait to shut node #{node_name} down without waiting.\n"
{:validation_failure, {:unsupported_target, msg}}
end
end
end
use RabbitMQ.CLI.Core.AcceptsNoPositionalArguments
def run([], %{node: node_name, wait: false, timeout: timeout}) do
shut_down_node_without_waiting(node_name, timeout)
end
def run([], %{node: node_name, wait: true, timeout: timeout}) do
case :rabbit_misc.rpc_call(node_name, :os, :getpid, []) do
pid when is_list(pid) ->
shut_down_node_and_wait_pid_to_stop(node_name, pid, timeout)
other ->
other
end
end
use RabbitMQ.CLI.DefaultOutput
def usage, do: "shutdown [--wait]"
def help_section(), do: :node_management
def description(), do: "Stops the Erlang node on which RabbitMQ is running and waits for the OS process to exit"
def banner(_, _), do: nil
#
# Implementation
#
defp shut_down_node_without_waiting(node_name, timeout) do
:rabbit_misc.rpc_call(node_name, :rabbit, :stop_and_halt, [], timeout)
end
defp shut_down_node_and_wait_pid_to_stop(node_name, pid, timeout) do
{:stream,
RabbitMQ.CLI.Core.Helpers.stream_until_error([
fn -> "Shutting down RabbitMQ node #{node_name} running at PID #{pid}" end,
fn ->
res = shut_down_node_without_waiting(node_name, timeout)
case res do
:ok -> "Waiting for PID #{pid} to terminate"
{:badrpc, err} -> {:error, err}
{:error, _} = err -> err
end
end,
fn ->
OsPid.wait_for_os_process_death(pid)
"RabbitMQ node #{node_name} running at PID #{pid} successfully shut down"
end
])}
end
end
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