121 lines
4.8 KiB
Python
121 lines
4.8 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 nova.api.openstack import wsgi
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from nova import availability_zones
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from nova import compute
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import nova.conf
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from nova.policies import availability_zone as az_policies
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from nova import servicegroup
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CONF = nova.conf.CONF
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ATTRIBUTE_NAME = "availability_zone"
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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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self.host_api = compute.HostAPI()
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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(
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ctxt, hostapi=self.host_api)
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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 services
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enabled_services = self.host_api.service_get_all(
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context, {'disabled': False}, set_zones=True, all_cells=True)
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available_zones, not_available_zones = (
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availability_zones.get_availability_zones(
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ctxt, enabled_services=enabled_services,
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hostapi=self.host_api))
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zone_hosts = {}
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host_services = {}
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api_services = ('nova-osapi_compute', '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'], set())
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zone_hosts[service['availability_zone']].add(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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@wsgi.expected_errors(())
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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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context.can(az_policies.POLICY_ROOT % 'list')
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return self._describe_availability_zones(context)
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@wsgi.expected_errors(())
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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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context.can(az_policies.POLICY_ROOT % 'detail')
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return self._describe_availability_zones_verbose(context)
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