145 lines
5.7 KiB
Python
145 lines
5.7 KiB
Python
# Copyright 2012 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_config import cfg
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova import availability_zones
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from nova import context as nova_context
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from nova import objects
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from nova import servicegroup
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CONF = cfg.CONF
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authorize_list = extensions.extension_authorizer('compute',
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'availability_zone:list')
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authorize_detail = extensions.extension_authorizer('compute',
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'availability_zone:detail')
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class AvailabilityZoneController(wsgi.Controller):
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"""The Availability Zone API controller for the OpenStack API."""
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def __init__(self):
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super(AvailabilityZoneController, self).__init__()
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self.servicegroup_api = servicegroup.API()
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def _get_filtered_availability_zones(self, zones, is_available):
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result = []
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for zone in zones:
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# Hide internal_service_availability_zone
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if zone == CONF.internal_service_availability_zone:
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continue
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result.append({'zoneName': zone,
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'zoneState': {'available': is_available},
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"hosts": None})
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return result
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def _describe_availability_zones(self, context, **kwargs):
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ctxt = context.elevated()
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available_zones, not_available_zones = \
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availability_zones.get_availability_zones(ctxt)
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filtered_available_zones = \
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self._get_filtered_availability_zones(available_zones, True)
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filtered_not_available_zones = \
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self._get_filtered_availability_zones(not_available_zones, False)
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return {'availabilityZoneInfo': filtered_available_zones +
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filtered_not_available_zones}
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def _describe_availability_zones_verbose(self, context, **kwargs):
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ctxt = context.elevated()
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available_zones, not_available_zones = \
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availability_zones.get_availability_zones(ctxt)
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# Available services
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enabled_services = objects.ServiceList.get_all(context, disabled=False,
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set_zones=True)
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zone_hosts = {}
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host_services = {}
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api_services = ('nova-osapi_compute', 'nova-ec2', 'nova-metadata')
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for service in enabled_services:
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if service.binary in api_services:
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# Skip API services in the listing since they are not
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# maintained in the same way as other services
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continue
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zone_hosts.setdefault(service['availability_zone'], [])
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if service['host'] not in zone_hosts[service['availability_zone']]:
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zone_hosts[service['availability_zone']].append(
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service['host'])
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host_services.setdefault(service['availability_zone'] +
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service['host'], [])
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host_services[service['availability_zone'] + service['host']].\
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append(service)
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result = []
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for zone in available_zones:
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hosts = {}
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for host in zone_hosts.get(zone, []):
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hosts[host] = {}
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for service in host_services[zone + host]:
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alive = self.servicegroup_api.service_is_up(service)
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hosts[host][service['binary']] = {'available': alive,
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'active': True != service['disabled'],
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'updated_at': service['updated_at']}
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result.append({'zoneName': zone,
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'zoneState': {'available': True},
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"hosts": hosts})
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for zone in not_available_zones:
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result.append({'zoneName': zone,
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'zoneState': {'available': False},
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"hosts": None})
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return {'availabilityZoneInfo': result}
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def index(self, req):
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"""Returns a summary list of availability zone."""
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context = req.environ['nova.context']
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authorize_list(context)
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return self._describe_availability_zones(context)
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def detail(self, req):
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"""Returns a detailed list of availability zone."""
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context = req.environ['nova.context']
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authorize_detail(context)
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# NOTE(alex_xu): back-compatible with db layer hard-code admin
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# permission checks.
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nova_context.require_admin_context(context)
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return self._describe_availability_zones_verbose(context)
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class Availability_zone(extensions.ExtensionDescriptor):
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"""1. Add availability_zone to the Create Server v1.1 API.
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2. Add availability zones describing.
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"""
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name = "AvailabilityZone"
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alias = "os-availability-zone"
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namespace = ("http://docs.openstack.org/compute/ext/"
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"availabilityzone/api/v1.1")
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updated = "2012-12-21T00:00:00Z"
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension('os-availability-zone',
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AvailabilityZoneController(),
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collection_actions={'detail': 'GET'})
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resources.append(res)
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return resources
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