1## This Source Code Form is subject to the terms of the Mozilla Public 2## License, v. 2.0. If a copy of the MPL was not distributed with this 3## file, You can obtain one at https://mozilla.org/MPL/2.0/. 4## 5## Copyright (c) 2018-2021 VMware, Inc. or its affiliates. All rights reserved. 6 7 8defmodule RabbitMQ.CLI.Ctl.Commands.EnableFeatureFlagCommand do 9 @behaviour RabbitMQ.CLI.CommandBehaviour 10 11 def merge_defaults(args, opts), do: {args, opts} 12 13 def validate([], _), do: {:validation_failure, :not_enough_args} 14 def validate([_|_] = args, _) when length(args) > 1, do: {:validation_failure, :too_many_args} 15 def validate([""], _), do: {:validation_failure, {:bad_argument, "feature_flag cannot be an empty string."}} 16 def validate([_], _), do: :ok 17 18 use RabbitMQ.CLI.Core.RequiresRabbitAppRunning 19 20 def run(["all"], %{node: node_name}) do 21 case :rabbit_misc.rpc_call(node_name, :rabbit_feature_flags, :enable_all, []) do 22 # Server does not support feature flags, consider none are available. 23 # See rabbitmq/rabbitmq-cli#344 for context. MK. 24 {:badrpc, {:EXIT, {:undef, _}}} -> {:error, :unsupported} 25 {:badrpc, _} = err -> err 26 other -> other 27 end 28 end 29 30 def run([feature_flag], %{node: node_name}) do 31 case :rabbit_misc.rpc_call(node_name, :rabbit_feature_flags, :enable, [String.to_atom(feature_flag)]) do 32 # Server does not support feature flags, consider none are available. 33 # See rabbitmq/rabbitmq-cli#344 for context. MK. 34 {:badrpc, {:EXIT, {:undef, _}}} -> {:error, :unsupported} 35 {:badrpc, _} = err -> err 36 other -> other 37 end 38 end 39 40 def output({:error, :unsupported}, %{node: node_name}) do 41 {:error, RabbitMQ.CLI.Core.ExitCodes.exit_usage, "This feature flag is not supported by node #{node_name}"} 42 end 43 use RabbitMQ.CLI.DefaultOutput 44 45 def usage, do: "enable_feature_flag <all | feature_flag>" 46 47 def usage_additional() do 48 [ 49 ["<feature_flag>", "name of the feature flag to enable, or \"all\" to enable all supported flags"] 50 ] 51end 52 53 def help_section(), do: :feature_flags 54 55 def description(), do: "Enables a feature flag or all supported feature flags on the target node" 56 57 def banner(["all"], _), do: "Enabling all feature flags ..." 58 59 def banner([feature_flag], _), do: "Enabling feature flag \"#{feature_flag}\" ..." 60end 61