Add support for deleting alarms.

Change-Id: Ifbf682bc05ce47d04be1940238cd52d0e895588f

ceilometerclient/v2/alarms.py

@@ -28,13 +28,18 @@ class Alarm(base.Resource):
 class AlarmManager(base.Manager):
     resource_class = Alarm
 
+    @staticmethod
+    def _path(id=None):
+        return '/v2/alarms/%s' % id if id else '/v2/alarms'
+
     def list(self, q=None):
-        path = '/v2/alarms'
+        return self._list(options.build_url(self._path(), q))
-        return self._list(options.build_url(path, q))
 
     def get(self, alarm_id):
-        path = '/v2/alarms/%s' % alarm_id
         try:
-            return self._list(path, expect_single=True)[0]
+            return self._list(self._path(alarm_id), expect_single=True)[0]
         except IndexError:
             return None
+
+    def delete(self, alarm_id):
+        return self._delete(self._path(alarm_id))

ceilometerclient/v2/shell.py

@@ -117,6 +117,18 @@ def do_alarm_show(cc, args={}):
         utils.print_dict(data, wrap=72)
 
 
+@utils.arg('-a', '--alarm_id', metavar='<ALARM_ID>',
+           help='ID of the alarm to show.')
+def do_alarm_delete(cc, args={}):
+    '''Delete an alarm'''
+    if args.alarm_id is None:
+        raise exc.CommandError('Alarm ID not provided (-a <alarm id>)')
+    try:
+        resource = cc.alarms.delete(args.alarm_id)
+    except exc.HTTPNotFound:
+        raise exc.CommandError('Alarm not found: %s' % args.alarm_id)
+
+
 @utils.arg('-q', '--query', metavar='<QUERY>',
            help='key[op]value; list.')
 def do_resource_list(cc, args={}):

tests/v2/test_alarms.py

@@ -64,7 +64,14 @@ fixtures = {
             {},
             [AN_ALARM],
         ),
-    }
+    },
+    '/v2/alarms/victim-id':
+    {
+        'DELETE': (
+            {},
+            None,
+        ),
+    },
 }
 
 
@@ -108,3 +115,11 @@ class AlarmManagerTest(unittest.TestCase):
         self.assertEqual(self.api.calls, expect)
         self.assertTrue(alarm)
         self.assertEqual(alarm.alarm_id, 'alarm-id')
+
+    def test_delete(self):
+        deleted = self.mgr.delete(alarm_id='victim-id')
+        expect = [
+            ('DELETE', '/v2/alarms/victim-id', {}, None),
+        ]
+        self.assertEqual(self.api.calls, expect)
+        self.assertTrue(deleted is None)