list availability zones for compute

Adds the command `os availability zone list`

Change-Id: I77bf52a9b84a62c3771a4838c9ea0c3af03eedb2
Closes-Bug: #1400795

openstackclient/compute/v2/availability_zone.py

@@ -0,0 +1,102 @@
+#   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.
+#
+
+"""Compute v2 Availability Zone action implementations"""
+
+import copy
+import logging
+
+from cliff import lister
+from novaclient import exceptions as nova_exceptions
+import six
+
+from openstackclient.common import utils
+from openstackclient.i18n import _  # noqa
+
+
+def _xform_availability_zone(az, include_extra):
+    result = []
+    zone_info = {}
+    if hasattr(az, 'zoneState'):
+        zone_info['zone_status'] = ('available' if az.zoneState['available']
+                                    else 'not available')
+    if hasattr(az, 'zoneName'):
+        zone_info['zone_name'] = az.zoneName
+
+    if not include_extra:
+        result.append(zone_info)
+        return result
+
+    if hasattr(az, 'hosts') and az.hosts:
+        for host, services in six.iteritems(az.hosts):
+            host_info = copy.deepcopy(zone_info)
+            host_info['host_name'] = host
+
+            for svc, state in six.iteritems(services):
+                info = copy.deepcopy(host_info)
+                info['service_name'] = svc
+                info['service_status'] = '%s %s %s' % (
+                    'enabled' if state['active'] else 'disabled',
+                    ':-)' if state['available'] else 'XXX',
+                    state['updated_at'])
+                result.append(info)
+    else:
+        zone_info['host_name'] = ''
+        zone_info['service_name'] = ''
+        zone_info['service_status'] = ''
+        result.append(zone_info)
+    return result
+
+
+class ListAvailabilityZone(lister.Lister):
+    """List Availability Zones and their status"""
+
+    log = logging.getLogger(__name__ + '.ListAvailabilityZone')
+
+    def get_parser(self, prog_name):
+        parser = super(ListAvailabilityZone, self).get_parser(prog_name)
+        parser.add_argument(
+            '--long',
+            action='store_true',
+            default=False,
+            help=_('List additional fields in output'),
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        self.log.debug('take_action(%s)', parsed_args)
+
+        if parsed_args.long:
+            columns = ('Zone Name', 'Zone Status',
+                       'Host Name', 'Service Name', 'Service Status')
+        else:
+            columns = ('Zone Name', 'Zone Status')
+
+        compute_client = self.app.client_manager.compute
+        try:
+            data = compute_client.availability_zones.list()
+        except nova_exceptions.Forbidden as e:  # policy doesn't allow
+            try:
+                data = compute_client.availability_zones.list(detailed=False)
+            except Exception:
+                raise e
+
+        # Argh, the availability zones are not iterable...
+        result = []
+        for zone in data:
+            result += _xform_availability_zone(zone, parsed_args.long)
+
+        return (columns,
+                (utils.get_dict_properties(
+                    s, columns
+                ) for s in result))

setup.cfg

@@ -49,6 +49,8 @@ openstack.common =
     quota_show = openstackclient.common.quota:ShowQuota
 
 openstack.compute.v2 =
+    availability_zone_list = openstackclient.compute.v2.availability_zone:ListAvailabilityZone
+
     compute_agent_create = openstackclient.compute.v2.agent:CreateAgent
     compute_agent_delete = openstackclient.compute.v2.agent:DeleteAgent
     compute_agent_list = openstackclient.compute.v2.agent:ListAgent