add rca api

Change-Id: I58c29e3fd99b5e9f5d686c3cbb57c19302dc0947

vitrageclient/shell.py

@@ -30,6 +30,7 @@ import client
 import noauth
 
 from v1.cli import alarms
+from v1.cli import rca
 from v1.cli import resource
 from v1.cli import topology
 from vitrageclient import __version__
@@ -41,6 +42,7 @@ class VitrageCommandManager(commandmanager.CommandManager):
         "resource show": resource.ResourceShow,
         "resource list": resource.ResourceList,
         "alarms list": alarms.AlarmsList,
+        "rca show": rca.RcaShow,
     }
 
     def load_commands(self, namespace):

vitrageclient/v1/cli/rca.py

@@ -0,0 +1,28 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from cliff import show
+
+
+# noinspection PyAbstractClass
+class RcaShow(show.ShowOne):
+    """Show an RCA"""
+
+    def get_parser(self, prog_name):
+        parser = super(RcaShow, self).get_parser(prog_name)
+        parser.add_argument("alarm_id", help="ID of an alarm")
+        return parser
+
+    def take_action(self, parsed_args):
+        alarm_id = parsed_args.alarm_id
+        alarm = self.app.client.rca.get(alarm_id=alarm_id)
+        return self.dict2columns(alarm)

vitrageclient/v1/client.py

@@ -9,9 +9,11 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
+
 from vitrageclient import client
 
 from vitrageclient.v1 import alarms
+from vitrageclient.v1 import rca
 from vitrageclient.v1 import resource
 from vitrageclient.v1 import topology
 
@@ -24,3 +26,4 @@ class Client(object):
         self.topology = topology.Topology(self._api)
         self.resource = resource.Resource(self._api)
         self.alarms = alarms.Alarm(self._api)
+        self.rca = rca.Rca(self._api)

vitrageclient/v1/rca.py

@@ -0,0 +1,26 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+
+class Rca(object):
+    url = "v1/rca/"
+
+    def __init__(self, api):
+        self.api = api
+
+    def get(self, alarm_id):
+        """Get RCA for an alarm
+
+        :param alarm_id: the id of the alarm
+        """
+        url = self.url + alarm_id
+        return self.api.get(url).json()