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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.Plugins.Commands.EnableCommand do
alias RabbitMQ.CLI.Plugins.Helpers, as: PluginHelpers
alias RabbitMQ.CLI.Core.{Helpers, Validators}
@behaviour RabbitMQ.CLI.CommandBehaviour
def formatter(), do: RabbitMQ.CLI.Formatters.Plugins
def merge_defaults(args, opts) do
{args, Map.merge(%{online: false, offline: false, all: false}, opts)}
end
def distribution(%{offline: true}), do: :none
def distribution(%{offline: false}), do: :cli
def switches(), do: [online: :boolean, offline: :boolean, all: :boolean]
def validate([], %{all: false}) do
{:validation_failure, :not_enough_args}
end
def validate([_ | _], %{all: true}) do
{:validation_failure, {:bad_argument, "Cannot set both --all and a list of plugins"}}
end
def validate(_, %{online: true, offline: true}) do
{:validation_failure, {:bad_argument, "Cannot set both online and offline"}}
end
def validate(_, _) do
:ok
end
def validate_execution_environment(args, opts) do
Validators.chain(
[
&PluginHelpers.can_set_plugins_with_mode/2,
&Helpers.require_rabbit_and_plugins/2,
&PluginHelpers.enabled_plugins_file/2,
&Helpers.plugins_dir/2
],
[args, opts]
)
end
def run(plugin_names, %{all: all_flag} = opts) do
plugins =
case all_flag do
false -> for s <- plugin_names, do: String.to_atom(s)
true -> PluginHelpers.plugin_names(PluginHelpers.list(opts))
end
case PluginHelpers.validate_plugins(plugins, opts) do
:ok -> do_run(plugins, opts)
other -> other
end
end
use RabbitMQ.CLI.Plugins.ErrorOutput
def banner([], %{all: true, node: node_name}) do
"Enabling ALL plugins on node #{node_name}"
end
def banner(plugins, %{node: node_name}) do
["Enabling plugins on node #{node_name}:" | plugins]
end
def usage, do: "enable <plugin1> [ <plugin2>] | --all [--offline] [--online]"
def usage_additional() do
[
"<plugin1> [ <plugin2>]: names of plugins to enable separated by a space",
"--online: contact target node to enable the plugins. Changes are applied immediately.",
"--offline: update enabled plugins file directly without contacting target node. Changes will be delayed until the node is restarted.",
"--all: enable all available plugins. Not recommended as some plugins may conflict or otherwise be incompatible!"
]
end
def help_section(), do: :plugin_management
def description(), do: "Enables one or more plugins"
#
# Implementation
#
def do_run(plugins, %{node: node_name} = opts) do
enabled = PluginHelpers.read_enabled(opts)
all = PluginHelpers.list(opts)
implicit = :rabbit_plugins.dependencies(false, enabled, all)
enabled_implicitly = MapSet.difference(MapSet.new(implicit), MapSet.new(enabled))
plugins_to_set =
MapSet.union(
MapSet.new(enabled),
MapSet.difference(MapSet.new(plugins), enabled_implicitly)
)
mode = PluginHelpers.mode(opts)
case PluginHelpers.set_enabled_plugins(MapSet.to_list(plugins_to_set), opts) do
{:ok, enabled_plugins} ->
{:stream,
Stream.concat([
[:rabbit_plugins.strictly_plugins(enabled_plugins, all)],
RabbitMQ.CLI.Core.Helpers.defer(fn ->
case PluginHelpers.update_enabled_plugins(enabled_plugins, mode, node_name, opts) do
%{set: new_enabled} = result ->
enabled = new_enabled -- implicit
filter_strictly_plugins(
Map.put(result, :enabled, :rabbit_plugins.strictly_plugins(enabled, all)),
all,
[:set, :started, :stopped]
)
other ->
other
end
end)
])}
{:error, _} = err ->
err
end
end
defp filter_strictly_plugins(map, _all, []) do
map
end
defp filter_strictly_plugins(map, all, [head | tail]) do
case map[head] do
nil ->
filter_strictly_plugins(map, all, tail)
other ->
value = :rabbit_plugins.strictly_plugins(other, all)
filter_strictly_plugins(Map.put(map, head, value), all, tail)
end
end
end
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