Changes to support new alarm counts api in vitrage

This change is to support the new api as introduced by the
alarm-counts-api blueprint.
- There is a new cli added as well to expose the new api:
  vitrage alarm count
- The bash completion file was also updated

Change-Id: I47b5b2cbb32c742ca15478ee294d341c0137e0b5
Depends-On: I6061b63c068580dcd25df5c624d9b3bd88f30cca
Implements: blueprint alarm-counts-api
Signed-off-by: Tyler Smith <tyler.smith@windriver.com>

tools/vitrage.bash_completion

@@ -6,8 +6,9 @@ _vitrage()
 
   # Command data:
   cmds='alarm complete event healthcheck help rca resource template topology'
-  cmds_alarm='list'
+  cmds_alarm='list count'
   cmds_alarm_list='-h --help -f --format -c --column --max-width --print-empty --noindent --quote --all-tenants'
+  cmds_alarm_count='-h --help -f --format -c --column --max-width --print-empty --noindent --quote --all-tenants'
   cmds_complete='-h --help --name --shell'
   cmds_event='post'
   cmds_event_post='-h --help --type --time --details'

vitrageclient/shell.py

@@ -51,6 +51,7 @@ class VitrageCommandManager(commandmanager.CommandManager):
         'resource show': resource.ResourceShow,
         'resource list': resource.ResourceList,
         'alarm list': alarm.AlarmList,
+        'alarm count': alarm.AlarmCount,
         'rca show': rca.RcaShow,
         'template validate': template.TemplateValidate,
         'template list': template.TemplateList,

vitrageclient/v1/alarm.py

@@ -26,3 +26,11 @@ class Alarm(object):
         params = dict(vitrage_id=vitrage_id,
                       all_tenants=all_tenants)
         return self.api.get(self.url, params=params).json()
+
+    def count(self, all_tenants=False):
+        """Get a count of all alarms present
+
+        :param all_tenants: should return all tenants alarms
+        """
+        params = dict(all_tenants=all_tenants)
+        return self.api.get(self.url + 'count/', params=params).json()

vitrageclient/v1/cli/alarm.py

@@ -11,6 +11,7 @@
 # under the License.
 
 from cliff import lister
+from cliff import show
 
 from vitrageclient.common import utils
 
@@ -49,3 +50,31 @@ class AlarmList(lister.Lister):
                                 'vitrage_aggregated_severity',
                                 'vitrage_operational_severity',
                                 'update_timestamp'), alarms)
+
+
+# noinspection PyAbstractClass
+class AlarmCount(show.ShowOne):
+    """Show a count of all alarms"""
+
+    def get_parser(self, prog_name):
+        parser = super(AlarmCount, self).get_parser(prog_name)
+        parser.add_argument('--all-tenants',
+                            default=False,
+                            dest='all_tenants',
+                            action='store_true',
+                            help='Shows counts for alarms of all '
+                                 'the tenants')
+
+        return parser
+
+    @property
+    def formatter_default(self):
+        return 'json'
+
+    def take_action(self, parsed_args):
+        all_tenants = parsed_args.all_tenants
+
+        counts = utils.get_client(self).alarm.count(
+            all_tenants=all_tenants)
+
+        return self.dict2columns(counts)