Add new api vitrage status

To Check if vitrage is ready then you can check its
status some users don't want to check on every api call
if vitrage is ready, in that case you can check ad hoc

Change-Id: I0817016538a6b286816b99176339262c6453dc08

doc/source/contributor/cli.rst

@@ -1117,6 +1117,17 @@ webhook add
     +--------------+--------------------------------------+
 
 
+Status Example
+--------------
+::
+    vitrage status
+
+    +--------+-------+
+    | Field  | Value |
+    +--------+-------+
+    | reason | OK    |
+    +--------+-------+
+
 Python API
 ----------
 

releasenotes/notes/add_status-e3fdc1e61696ade0.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - Added a new API to show vitrage status.

setup.cfg

@@ -63,6 +63,7 @@ openstack.rca.v1 =
     rca_webhook_list = vitrageclient.v1.cli.webhook:WebhookList
     rca_webhook_show = vitrageclient.v1.cli.webhook:WebhookShow
     rca_service_list = vitrageclient.v1.cli.service:ServiceList
+    rca_status = vitrageclient.v1.cli.status:Status
 
 vitrageclient.formatter.show =
     graphml = vitrageclient.common.formatters:GraphMLFormatter

tools/vitrage.bash_completion

@@ -5,7 +5,7 @@ _vitrage()
   _get_comp_words_by_ref -n : cur prev words
 
   # Command data:
-  cmds='alarm complete event healthcheck help rca resource service template topology webhook'
+  cmds='alarm complete event healthcheck help rca resource service status template topology webhook'
   cmds_alarm='count history list show'
   cmds_alarm_count='-h --help -f --format -c --column --noindent --variable --prefix --max-width --fit-width --print-empty --all-tenants'
   cmds_alarm_history='-h --help -f --format -c --column --quote --noindent --max-width --fit-width --print-empty --sort-column --all-tenants --limit --marker --start --end'
@@ -24,8 +24,9 @@ _vitrage()
   cmds_resource_show='-h --help -f --format -c --column --noindent --variable --prefix --max-width --fit-width --print-empty'
   cmds_service='list'
   cmds_service_list='-h --help -f --format -c --column --quote --noindent --max-width --fit-width --print-empty --sort-column'
+  cmds_status='-h --help -f --format -c --column --noindent --variable --prefix --max-width --fit-width --print-empty'
   cmds_template='add delete list show validate versions'
-  cmds_template_add='-h --help -f --format -c --column --quote --noindent --max-width --fit-width --print-empty --sort-column --path --type --params --wait'
+  cmds_template_add='-h --help -f --format -c --column --quote --noindent --max-width --fit-width --print-empty --sort-column --path --type --params --wait --overwrite'
   cmds_template_delete='-h --help --wait'
   cmds_template_list='-h --help -f --format -c --column --quote --noindent --max-width --fit-width --print-empty --sort-column'
   cmds_template_show='-h --help -f --format -c --column --noindent --variable --prefix --max-width --fit-width --print-empty'

vitrageclient/shell.py

@@ -39,6 +39,7 @@ from vitrageclient.v1.cli import healthcheck
 from vitrageclient.v1.cli import rca
 from vitrageclient.v1.cli import resource
 from vitrageclient.v1.cli import service
+from vitrageclient.v1.cli import status
 from vitrageclient.v1.cli import template
 from vitrageclient.v1.cli import topology
 from vitrageclient.v1.cli import webhook
@@ -70,7 +71,8 @@ class VitrageCommandManager(commandmanager.CommandManager):
         'webhook add': webhook.WebhookAdd,
         'webhook list': webhook.WebhookList,
         'webhook show': webhook.WebhookShow,
-        'service list': service.ServiceList
+        'service list': service.ServiceList,
+        'status': status.Status,
     }
 
     def load_commands(self, namespace):

vitrageclient/v1/cli/status.py

@@ -0,0 +1,23 @@
+#  Copyright 2019 - Nokia Corporation
+#
+#  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 Status(show.ShowOne):
+    """Check api health status"""
+
+    def take_action(self, parsed_args):
+        return self.dict2columns(self.app.client.status.get())

vitrageclient/v1/client.py

@@ -19,6 +19,7 @@ from vitrageclient.v1 import healthcheck
 from vitrageclient.v1 import rca
 from vitrageclient.v1 import resource
 from vitrageclient.v1 import service
+from vitrageclient.v1 import status
 from vitrageclient.v1 import template
 from vitrageclient.v1 import topology
 from vitrageclient.v1 import webhook
@@ -39,3 +40,4 @@ class Client(object):
         self.healthcheck = healthcheck.HealthCheck(self._api)
         self.webhook = webhook.Webhook(self._api)
         self.service = service.Service(self._api)
+        self.status = status.Status(self._api)

vitrageclient/v1/status.py

@@ -0,0 +1,25 @@
+#  Copyright 2019 - Nokia Corporation
+#
+#  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 Status(object):
+    URL = 'v1/status/'
+
+    def __init__(self, api):
+        self.api = api
+
+    def get(self):
+        """Get Status result"""
+        resp = self.api.get(self.URL)
+        return resp.json()