diff options
Diffstat (limited to 'nova/api/openstack/compute/contrib/availability_zone.py')
| -rw-r--r-- | nova/api/openstack/compute/contrib/availability_zone.py | 155 |
1 files changed, 153 insertions, 2 deletions
diff --git a/nova/api/openstack/compute/contrib/availability_zone.py b/nova/api/openstack/compute/contrib/availability_zone.py index 2955b68eb..6cde5ca64 100644 --- a/nova/api/openstack/compute/contrib/availability_zone.py +++ b/nova/api/openstack/compute/contrib/availability_zone.py @@ -14,14 +14,165 @@ # License for the specific language governing permissions and limitations # under the License +from nova.api.openstack import common from nova.api.openstack import extensions +from nova.api.openstack import wsgi +from nova.api.openstack import xmlutil +from nova import availability_zones +from nova import db +from nova.openstack.common import cfg +from nova.openstack.common import log as logging +from nova import servicegroup + + +LOG = logging.getLogger(__name__) +CONF = cfg.CONF + +authorize_list = extensions.extension_authorizer('compute', + 'availability_zone:list') +authorize_detail = extensions.extension_authorizer('compute', + 'availability_zone:detail') + + +def make_availability_zone(elem): + elem.set('name', 'zoneName') + + zoneStateElem = xmlutil.SubTemplateElement(elem, 'zoneState', + selector='zoneState') + zoneStateElem.set('available') + + hostsElem = xmlutil.SubTemplateElement(elem, 'hosts', selector='hosts') + hostElem = xmlutil.SubTemplateElement(hostsElem, 'host', + selector=xmlutil.get_items) + hostElem.set('name', 0) + + svcsElem = xmlutil.SubTemplateElement(hostElem, 'services', selector=1) + svcElem = xmlutil.SubTemplateElement(svcsElem, 'service', + selector=xmlutil.get_items) + svcElem.set('name', 0) + + svcStateElem = xmlutil.SubTemplateElement(svcElem, 'serviceState', + selector=1) + svcStateElem.set('available') + svcStateElem.set('active') + svcStateElem.set('updated_at') + + # Attach metadata node + elem.append(common.MetadataTemplate()) + + +class AvailabilityZonesTemplate(xmlutil.TemplateBuilder): + def construct(self): + root = xmlutil.TemplateElement('availabilityZones') + zoneElem = xmlutil.SubTemplateElement(root, 'availabilityZone', + selector='availabilityZoneInfo') + make_availability_zone(zoneElem) + return xmlutil.MasterTemplate(root, 1, nsmap={ + Availability_zone.alias: Availability_zone.namespace}) + + +class AvailabilityZoneController(wsgi.Controller): + """The Availability Zone API controller for the OpenStack API.""" + + def __init__(self): + super(AvailabilityZoneController, self).__init__() + self.servicegroup_api = servicegroup.API() + + def _describe_availability_zones(self, context, **kwargs): + ctxt = context.elevated() + available_zones, not_available_zones = \ + availability_zones.get_availability_zones(ctxt) + + result = [] + for zone in available_zones: + # Hide internal_service_availability_zone + if zone == CONF.internal_service_availability_zone: + continue + result.append({'zoneName': zone, + 'zoneState': {'available': True}, + "hosts": None}) + for zone in not_available_zones: + result.append({'zoneName': zone, + 'zoneState': {'available': False}, + "hosts": None}) + return {'availabilityZoneInfo': result} + + def _describe_availability_zones_verbose(self, context, **kwargs): + ctxt = context.elevated() + available_zones, not_available_zones = \ + availability_zones.get_availability_zones(ctxt) + + # Available services + enabled_services = db.service_get_all(context, False) + enabled_services = availability_zones.set_availability_zones(context, + enabled_services) + zone_hosts = {} + host_services = {} + for service in enabled_services: + zone_hosts.setdefault(service['availability_zone'], []) + if not service['host'] in zone_hosts[service['availability_zone']]: + zone_hosts[service['availability_zone']].append( + service['host']) + + host_services.setdefault(service['availability_zone'] + + service['host'], []) + host_services[service['availability_zone'] + service['host']].\ + append(service) + + result = [] + for zone in available_zones: + hosts = {} + for host in zone_hosts[zone]: + hosts[host] = {} + for service in host_services[zone + host]: + alive = self.servicegroup_api.service_is_up(service) + hosts[host][service['binary']] = {'available': alive, + 'active': True != service['disabled'], + 'updated_at': service['updated_at']} + result.append({'zoneName': zone, + 'zoneState': {'available': True}, + "hosts": hosts}) + + for zone in not_available_zones: + result.append({'zoneName': zone, + 'zoneState': {'available': False}, + "hosts": None}) + return {'availabilityZoneInfo': result} + + @wsgi.serializers(xml=AvailabilityZonesTemplate) + def index(self, req): + """Returns a summary list of availability zone.""" + context = req.environ['nova.context'] + authorize_list(context) + + return self._describe_availability_zones(context) + + @wsgi.serializers(xml=AvailabilityZonesTemplate) + def detail(self, req): + """Returns a detailed list of availability zone.""" + context = req.environ['nova.context'] + authorize_detail(context) + + return self._describe_availability_zones_verbose(context) class Availability_zone(extensions.ExtensionDescriptor): - """Add availability_zone to the Create Server v1.1 API.""" + """1. Add availability_zone to the Create Server v1.1 API. + 2. Add availability zones describing. + """ name = "AvailabilityZone" alias = "os-availability-zone" namespace = ("http://docs.openstack.org/compute/ext/" "availabilityzone/api/v1.1") - updated = "2012-08-09T00:00:00+00:00" + updated = "2012-12-21T00:00:00+00:00" + + def get_resources(self): + resources = [] + + res = extensions.ResourceExtension('os-availability-zone', + AvailabilityZoneController(), + collection_actions={'detail': 'GET'}) + resources.append(res) + + return resources |