Add "event trait description" command

This command allow users to list the trait type definitions of a
specified event_type.

Change-Id: Iea178629289f28edd5164aa32cd5d172a5aca28c

pankoclient/osc/v2/events.py

@@ -131,3 +131,24 @@ class EventTraitList(command.Lister):
         columns = ('name', 'value', 'type')
         return (columns,
                 (utils.get_item_properties(t, columns) for t in event_traits))
+
+
+class EventTraitDescription(command.Lister):
+    """List trait info for an event type."""
+
+    def get_parser(self, prog_name):
+        parser = super(EventTraitDescription, self).get_parser(prog_name)
+        parser.add_argument(
+            'type_name',
+            metavar='<EVENT_TYPE>',
+            help='Type of the event for which traits definitions will be '
+                 'shown.'
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        ac = self.app.client_manager.event
+        event_traits = ac.event_trait_description.list(parsed_args.type_name)
+        columns = ('name', 'type')
+        return (columns,
+                (utils.get_item_properties(t, columns) for t in event_traits))

pankoclient/tests/unit/fakes.py

@@ -59,6 +59,8 @@ class FakeTestEventV2Client(object):
             self.fake_http_client)
         self.event_type = events.EventTypeManager(self.fake_http_client)
         self.event_trait = events.EventTraitsManager(self.fake_http_client)
+        self.event_trait_description = events.EventTraitDescriptionManager(
+            self.fake_http_client)
 
 
 class FakeHTTPClient(object):

pankoclient/tests/unit/osc/v2/test_events.py

@@ -54,3 +54,22 @@ class TestEventTraitsList(test_base.TestEventV2):
         expected_url = '/v2/event_types/%s/traits/%s' % (
             parsed_args.type_name, parsed_args.trait_name)
         mock_list.assert_called_once_with(expected_url)
+
+
+@mock.patch.object(events_mgr.EventTraitDescriptionManager, '_list')
+class TestEventTraitDescription(test_base.TestEventV2):
+    def setUp(self):
+        super(TestEventTraitDescription, self).setUp()
+        self.cmd = events.EventTraitDescription(self.app, None)
+
+    def test_event_type_traits_description(self, mock_list):
+        arglist = [
+            'event_type1',
+        ]
+        verifylist = [
+            ('type_name', 'event_type1'),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        self.cmd.take_action(parsed_args)
+        expected_url = '/v2/event_types/%s/traits/' % parsed_args.type_name
+        mock_list.assert_called_once_with(expected_url)

pankoclient/v2/client.py

@@ -28,3 +28,5 @@ class Client(object):
         self.event = events.EventManager(self.http_client)
         self.event_type = events.EventTypeManager(self.http_client)
         self.event_trait = events.EventTraitsManager(self.http_client)
+        self.event_trait_description = events.EventTraitDescriptionManager(
+            self.http_client)

pankoclient/v2/events.py

@@ -27,6 +27,10 @@ class EventTrait(base.Resource):
     pass
 
 
+class TraitDescription(base.Resource):
+    pass
+
+
 class EventManager(base.ManagerWithFind):
     resource_class = Event
 
@@ -75,3 +79,11 @@ class EventTraitsManager(base.ManagerWithFind):
     def list(self, event_type, trait_name):
         url = '/v2/event_types/%s/traits/%s' % (event_type, trait_name)
         return self._list(url)
+
+
+class EventTraitDescriptionManager(base.ManagerWithFind):
+    resource_class = TraitDescription
+
+    def list(self, event_type):
+        url = '/v2/event_types/%s/traits/' % event_type
+        return self._list(url)

setup.cfg

@@ -35,6 +35,7 @@ openstack.event.v2 =
     event show = pankoclient.osc.v2.events:EventShow
     event type list = pankoclient.osc.v2.events:EventTypeList
     event trait list = pankoclient.osc.v2.events:EventTraitList
+    event trait description = pankoclient.osc.v2.events:EventTraitDescription
 
 [build_sphinx]
 source-dir = doc/source