Command line arguments command

* Reports the command line flags returned by `init:get_arguments()`

[#159699409]

2 files changed, 51 insertions, 2 deletions

diff --git a/deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/command_line_arguments_command.ex b/deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/command_line_arguments_command.ex
new file mode 100644
index 0000000000..d5f67fa42a
--- /dev/null
+++ b/deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/command_line_arguments_command.ex
@@ -0,0 +1,47 @@
+## 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.CommandLineArgumentsCommand do
+  alias RabbitMQ.CLI.Core.DocGuide
+  @behaviour RabbitMQ.CLI.CommandBehaviour
+
+  def scopes(), do: [:ctl, :diagnostics]
+
+  use RabbitMQ.CLI.Core.MergesNoDefaults
+  use RabbitMQ.CLI.Core.AcceptsNoPositionalArguments
+
+  def run([], %{node: node_name}) do
+    :rabbit_misc.rpc_call(node_name, :init, :get_arguments, [])
+  end
+
+  use RabbitMQ.CLI.DefaultOutput
+
+  def formatter(), do: RabbitMQ.CLI.Formatters.Erlang
+
+  def usage, do: "command_line_arguments"
+
+  def usage_doc_guides() do
+    [
+      DocGuide.configuration(),
+      DocGuide.monitoring()
+    ]
+  end
+
+  def help_section(), do: :observability_and_health_checks
+
+  def description(), do: "Displays the command-line flags and system-defined flags of the node"
+
+  def banner(_, %{node: node_name}), do: "Command line arguments of node #{node_name} ..."
+end
diff --git a/deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/report_command.ex b/deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/report_command.ex
index c21b66d8ca..b69d1753b4 100644
--- a/deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/report_command.ex
+++ b/deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/report_command.ex
@@ -27,7 +27,8 @@ defmodule RabbitMQ.CLI.Ctl.Commands.ReportCommand do
     ListPermissionsCommand,
     ListPoliciesCommand,
     ListQueuesCommand,
-    StatusCommand
+    StatusCommand,
+    CommandLineArgumentsCommand
   }
 
   @behaviour RabbitMQ.CLI.CommandBehaviour
@@ -61,7 +62,8 @@ defmodule RabbitMQ.CLI.Ctl.Commands.ReportCommand do
           run_command(ClusterStatusCommand, [], opts),
           run_command(EnvironmentCommand, [], opts),
           run_command(ListConnectionsCommand, info_keys(ListConnectionsCommand), opts),
-          run_command(ListChannelsCommand, info_keys(ListChannelsCommand), opts)
+          run_command(ListChannelsCommand, info_keys(ListChannelsCommand), opts),
+          run_command(CommandLineArgumentsCommand, [], opts)
         ]
 
         vhost_data =