Add support for getting individual alarms.

Include the *_actions attributes in the CLI output.

Change-Id: I19e2e7b9c60b56c0c84687694365ef3614dd0e44

ceilometerclient/v2/alarms.py

@@ -31,3 +31,10 @@ class AlarmManager(base.Manager):
     def list(self, q=None):
         path = '/v2/alarms'
         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]
+        except IndexError:
+            return None

ceilometerclient/v2/shell.py

@@ -98,6 +98,25 @@ def do_alarm_list(cc, args={}):
                      sortby=0)
 
 
+@utils.arg('-a', '--alarm_id', metavar='<ALARM_ID>',
+           help='ID of the alarm to show.')
+def do_alarm_show(cc, args={}):
+    '''Show an alarm'''
+    if args.alarm_id is None:
+        raise exc.CommandError('Alarm ID not provided (-a <alarm id>)')
+    try:
+        resource = cc.alarms.get(args.alarm_id)
+    except exc.HTTPNotFound:
+        raise exc.CommandError('Alarm not found: %s' % args.alarm_id)
+    else:
+        fields = ['name', 'description', 'counter_name', 'period',
+                  'evaluation_periods', 'threshold', 'comparison_operator',
+                  'state', 'enabled', 'alarm_id', 'user_id', 'project_id',
+                  'alarm_actions', 'ok_actions', 'insufficient_data_actions']
+        data = dict([(f, getattr(resource, f, '')) for f in fields])
+        utils.print_dict(data, wrap=72)
+
+
 @utils.arg('-q', '--query', metavar='<QUERY>',
            help='key[op]value; list.')
 def do_resource_list(cc, args={}):

tests/v2/test_alarms.py

@@ -50,6 +50,13 @@ fixtures = {
             [AN_ALARM],
         ),
     },
+    '/v2/alarms/alarm-id':
+    {
+        'GET': (
+            {},
+            AN_ALARM,
+        ),
+    },
     '/v2/alarms?q.op=&q.op=&q.value=project-id&q.value=SwiftObjectAlarm'
     '&q.field=project_id&q.field=name':
     {
@@ -92,3 +99,12 @@ class AlarmManagerTest(unittest.TestCase):
         self.assertEqual(self.api.calls, expect)
         self.assertEqual(len(alarms), 1)
         self.assertEqual(alarms[0].alarm_id, 'alarm-id')
+
+    def test_get(self):
+        alarm = self.mgr.get(alarm_id='alarm-id')
+        expect = [
+            ('GET', '/v2/alarms/alarm-id', {}, None),
+        ]
+        self.assertEqual(self.api.calls, expect)
+        self.assertTrue(alarm)
+        self.assertEqual(alarm.alarm_id, 'alarm-id')