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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 https://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.CloseAllConnectionsCommand do
@behaviour RabbitMQ.CLI.CommandBehaviour
def switches(), do: [global: :boolean, per_connection_delay: :integer, limit: :integer]
def merge_defaults(args, opts) do
{args, Map.merge(%{global: false, vhost: "/", per_connection_delay: 0, limit: 0}, opts)}
end
use RabbitMQ.CLI.Core.AcceptsOnePositionalArgument
use RabbitMQ.CLI.Core.RequiresRabbitAppRunning
def run([explanation], %{
node: node_name,
vhost: vhost,
global: global_opt,
per_connection_delay: delay,
limit: limit
}) do
conns =
case global_opt do
false ->
per_vhost =
:rabbit_misc.rpc_call(node_name, :rabbit_connection_tracking, :list, [vhost])
apply_limit(per_vhost, limit)
true ->
:rabbit_misc.rpc_call(node_name, :rabbit_connection_tracking, :list_on_node, [node_name])
end
case conns do
{:badrpc, _} = err ->
err
_ ->
:rabbit_misc.rpc_call(
node_name,
:rabbit_connection_tracking_handler,
:close_connections,
[conns, explanation, delay]
)
{:ok, "Closed #{length(conns)} connections"}
end
end
def output({:stream, stream}, _opts) do
{:stream, Stream.filter(stream, fn x -> x != :ok end)}
end
use RabbitMQ.CLI.DefaultOutput
def banner([explanation], %{node: node_name, global: true}) do
"Closing all connections to node #{node_name} (across all vhosts), reason: #{explanation}..."
end
def banner([explanation], %{vhost: vhost, limit: 0}) do
"Closing all connections in vhost #{vhost}, reason: #{explanation}..."
end
def banner([explanation], %{vhost: vhost, limit: limit}) do
"Closing #{limit} connections in vhost #{vhost}, reason: #{explanation}..."
end
def usage do
"close_all_connections [-p <vhost> --limit <limit>] [-n <node> --global] [--per-connection-delay <delay>] <explanation>"
end
def usage_additional do
[
"--global: consider connections across all virtual hosts",
"--limit <number>: close up to this many connections",
"--per-connection-delay <milliseconds>: inject a delay between closures"
]
end
def help_section(), do: :operations
def description(), do: "Instructs the broker to close all connections for the specified vhost or entire RabbitMQ node"
#
# Implementation
#
defp apply_limit(conns, 0) do
conns
end
defp apply_limit(conns, number) do
:lists.sublist(conns, number)
end
end
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