Add 'command list' command

* Add method to CommandManager to retrieve command names by group
* Add ListCommands

To list command groups loaded by cliff

Change-Id: I37fe2471aa2fafa8aa223159452d52b1981021d6

1 files changed, 16 insertions, 0 deletions

diff --git a/openstackclient/common/module.py b/openstackclient/common/module.py
index 7f9c52db..356cdca3 100644
--- a/openstackclient/common/module.py
+++ b/openstackclient/common/module.py
@@ -19,9 +19,25 @@ import logging
 import six
 import sys
 
+from cliff import lister
 from cliff import show
 
 
+class ListCommand(lister.Lister):
+    """List recognized commands by group"""
+
+    auth_required = False
+    log = logging.getLogger(__name__ + '.ListCommand')
+
+    def take_action(self, parsed_args):
+        self.log.debug('take_action(%s)', parsed_args)
+        cm = self.app.command_manager
+        groups = cm.get_command_groups()
+
+        columns = ('Command Group', 'Commands')
+        return (columns, ((c, cm.get_command_names(group=c)) for c in groups))
+
+
 class ListModule(show.ShowOne):
     """List module versions"""