Send network-changed notifications to nova
This patch notifies nova whenever a floatingip or fixed_ip is updated. Implements blueprint: nova-event-callback DocImpact - This notifications are off by default. Change-Id: Ifbe9d856e80e512d5595fd72ea2d7c047ce0de9d
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827cc51705
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2d37076d61
@ -296,6 +296,10 @@ notification_driver = neutron.openstack.common.notifier.rpc_notifier
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# Send notification to nova when port status is active.
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# notify_nova_on_port_status_changes = True
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# Send notifications to nova when port data (fixed_ips/floatingips) change
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# so nova can update it's cache.
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# notify_nova_on_port_data_changes = True
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# URL for connection to nova (Only supports one nova region currently).
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# nova_url = http://127.0.0.1:8774
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@ -15,6 +15,7 @@
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# License for the specific language governing permissions and limitations
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# under the License.
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import copy
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import netaddr
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import webob.exc
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@ -26,6 +27,7 @@ from neutron.api.v2 import attributes
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from neutron.api.v2 import resource as wsgi_resource
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from neutron.common import constants as const
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from neutron.common import exceptions
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from neutron.notifiers import nova
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from neutron.openstack.common import log as logging
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from neutron.openstack.common.notifier import api as notifier_api
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from neutron import policy
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@ -75,6 +77,7 @@ class Controller(object):
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agent_notifiers.get(const.AGENT_TYPE_DHCP) or
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dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
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)
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self._nova_notifier = nova.Notifier()
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self._member_actions = member_actions
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self._primary_key = self._get_primary_key()
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if self._allow_pagination and self._native_pagination:
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@ -414,6 +417,9 @@ class Controller(object):
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else:
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kwargs.update({self._resource: body})
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obj = obj_creator(request.context, **kwargs)
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self._nova_notifier.send_network_change(
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action, {}, {self._resource: obj})
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return notify({self._resource: self._view(request.context,
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obj)})
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@ -448,6 +454,7 @@ class Controller(object):
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notifier_api.CONF.default_notification_level,
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{self._resource + '_id': id})
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result = {self._resource: self._view(request.context, obj)}
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self._nova_notifier.send_network_change(action, {}, result)
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self._send_dhcp_notification(request.context,
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result,
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notifier_method)
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@ -479,6 +486,7 @@ class Controller(object):
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'default' not in value)]
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orig_obj = self._item(request, id, field_list=field_list,
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parent_id=parent_id)
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orig_object_copy = copy.copy(orig_obj)
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orig_obj.update(body[self._resource])
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try:
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policy.enforce(request.context,
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@ -505,6 +513,8 @@ class Controller(object):
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self._send_dhcp_notification(request.context,
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result,
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notifier_method)
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self._nova_notifier.send_network_change(
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action, orig_object_copy, result)
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return result
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@staticmethod
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@ -83,6 +83,9 @@ core_opts = [
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help=_("Ensure that configured gateway is on subnet")),
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cfg.BoolOpt('notify_nova_on_port_status_changes', default=True,
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help=_("Send notification to nova when port status changes")),
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cfg.BoolOpt('notify_nova_on_port_data_changes', default=True,
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help=_("Send notification to nova when port data (fixed_ips/"
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"floatingip) changes so nova can update its cache.")),
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cfg.StrOpt('nova_url',
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default='http://127.0.0.1:8774',
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help=_('URL for connection to nova')),
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@ -118,7 +118,8 @@ RESOURCE_ATTRIBUTE_MAP = {
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'is_visible': True, 'default': None},
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'port_id': {'allow_post': True, 'allow_put': True,
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'validate': {'type:uuid_or_none': None},
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'is_visible': True, 'default': None},
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'is_visible': True, 'default': None,
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'required_by_policy': True},
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'fixed_ip_address': {'allow_post': True, 'allow_put': True,
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'validate': {'type:ip_address_or_none': None},
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'is_visible': True, 'default': None},
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@ -19,6 +19,8 @@ from oslo.config import cfg
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from sqlalchemy.orm import attributes as sql_attr
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from neutron.common import constants
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from neutron import context
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from neutron import manager
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from neutron.openstack.common import log as logging
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from neutron.openstack.common import loopingcall
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@ -52,6 +54,67 @@ class Notifier(object):
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event_sender = loopingcall.FixedIntervalLoopingCall(self.send_events)
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event_sender.start(interval=cfg.CONF.send_events_interval)
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def _is_compute_port(self, port):
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try:
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if (port['device_id'] and
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port['device_owner'].startswith('compute:')):
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return True
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except (KeyError, AttributeError):
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pass
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return False
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def _get_network_changed_event(self, device_id):
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return {'name': 'network-changed',
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'server_uuid': device_id}
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@property
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def _plugin(self):
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# NOTE(arosen): this cannot be set in __init__ currently since
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# this class is initalized at the same time as NeutronManager()
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# which is decorated with synchronized()
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if not hasattr(self, '_plugin_ref'):
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self._plugin_ref = manager.NeutronManager.get_plugin()
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return self._plugin_ref
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def send_network_change(self, action, original_obj,
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returned_obj):
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"""Called when a network change is made that nova cares about.
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:param action: the event that occured.
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:param original_obj: the previous value of resource before action.
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:param returned_obj: the body returned to client as result of action.
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"""
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if not cfg.CONF.notify_nova_on_port_data_changes:
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return
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event = self.create_port_changed_event(action, original_obj,
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returned_obj)
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if event:
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self.pending_events.append(event)
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def create_port_changed_event(self, action, original_obj, returned_obj):
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port = None
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if action == 'update_port':
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port = returned_obj['port']
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elif action in ['update_floatingip', 'create_floatingip',
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'delete_floatingip']:
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# NOTE(arosen) if we are associating a floatingip the
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# port_id is in the returned_obj. Otherwise on disassociate
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# it's in the original_object
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port_id = (returned_obj['floatingip'].get('port_id') or
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original_obj.get('port_id'))
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if port_id is None:
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return
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ctx = context.get_admin_context()
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port = self._plugin.get_port(ctx, port_id)
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if port and self._is_compute_port(port):
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return self._get_network_changed_event(port['device_id'])
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def record_port_status_changed(self, port, current_port_status,
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previous_port_status, initiator):
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"""Determine if nova needs to be notified due to port status change.
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@ -69,8 +132,7 @@ class Notifier(object):
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return
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# We only want to notify about nova ports.
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if (not port.device_owner or
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not port.device_owner.startswith('compute:')):
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if not self._is_compute_port(port):
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return
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# We notify nova when a vif is unplugged which only occurs when
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@ -133,10 +195,11 @@ class Notifier(object):
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response_error = False
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for event in response:
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try:
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status = event['status']
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code = event['code']
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except KeyError:
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response_error = True
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if status == 'failed':
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continue
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if code != 200:
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LOG.warning(_("Nova event: %s returned with failed "
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"status"), event)
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else:
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@ -14,8 +14,11 @@
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# under the License.
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import mock
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from sqlalchemy.orm import attributes as sql_attr
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from oslo.config import cfg
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from neutron.common import constants
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from neutron.db import models_v2
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from neutron.notifiers import nova
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@ -26,7 +29,13 @@ class TestNovaNotify(base.BaseTestCase):
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def setUp(self, plugin=None):
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super(TestNovaNotify, self).setUp()
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class FakePlugin(object):
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def get_port(self, context, port_id):
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return {'device_id': 'instance_uuid',
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'device_owner': 'compute:None'}
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self.nova_notifier = nova.Notifier()
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self.nova_notifier._plugin_ref = FakePlugin()
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def test_notify_port_status_all_values(self):
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states = [constants.PORT_STATUS_ACTIVE, constants.PORT_STATUS_DOWN,
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@ -102,3 +111,134 @@ class TestNovaNotify(base.BaseTestCase):
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event = {'server_uuid': 'device-uuid', 'status': status,
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'name': event_name, 'tag': 'port-uuid'}
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self.assertEqual(event, port._notify_event)
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def test_update_fixed_ip_changed(self):
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returned_obj = {'port':
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{'device_owner': u'compute:dfd',
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'id': u'bee50827-bcee-4cc8-91c1-a27b0ce54222',
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'device_id': u'instance_uuid'}}
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expected_event = {'server_uuid': 'instance_uuid',
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'name': 'network-changed'}
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event = self.nova_notifier.create_port_changed_event('update_port',
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{}, returned_obj)
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self.assertEqual(event, expected_event)
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def test_create_floatingip_notify(self):
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returned_obj = {'floatingip':
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{'port_id': u'bee50827-bcee-4cc8-91c1-a27b0ce54222'}}
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expected_event = {'server_uuid': 'instance_uuid',
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'name': 'network-changed'}
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event = self.nova_notifier.create_port_changed_event(
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'create_floatingip', {}, returned_obj)
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self.assertEqual(event, expected_event)
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def test_create_floatingip_no_port_id_no_notify(self):
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returned_obj = {'floatingip':
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{'port_id': None}}
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event = self.nova_notifier.create_port_changed_event(
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'create_floatingip', {}, returned_obj)
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self.assertFalse(event, None)
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def test_delete_floatingip_notify(self):
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returned_obj = {'floatingip':
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{'port_id': u'bee50827-bcee-4cc8-91c1-a27b0ce54222'}}
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expected_event = {'server_uuid': 'instance_uuid',
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'name': 'network-changed'}
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event = self.nova_notifier.create_port_changed_event(
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'delete_floatingip', {}, returned_obj)
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self.assertEqual(expected_event, event)
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def test_delete_floatingip_no_port_id_no_notify(self):
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returned_obj = {'floatingip':
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{'port_id': None}}
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event = self.nova_notifier.create_port_changed_event(
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'delete_floatingip', {}, returned_obj)
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self.assertEqual(event, None)
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def test_associate_floatingip_notify(self):
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returned_obj = {'floatingip':
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{'port_id': u'5a39def4-3d3f-473d-9ff4-8e90064b9cc1'}}
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original_obj = {'port_id': None}
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expected_event = {'server_uuid': 'instance_uuid',
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'name': 'network-changed'}
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event = self.nova_notifier.create_port_changed_event(
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'update_floatingip', original_obj, returned_obj)
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self.assertEqual(expected_event, event)
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def test_disassociate_floatingip_notify(self):
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returned_obj = {'floatingip': {'port_id': None}}
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original_obj = {'port_id': '5a39def4-3d3f-473d-9ff4-8e90064b9cc1'}
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expected_event = {'server_uuid': 'instance_uuid',
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'name': 'network-changed'}
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event = self.nova_notifier.create_port_changed_event(
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'update_floatingip', original_obj, returned_obj)
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self.assertEqual(expected_event, event)
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def test_no_notification_notify_nova_on_port_data_changes_false(self):
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cfg.CONF.set_override('notify_nova_on_port_data_changes', False)
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with mock.patch.object(self.nova_notifier,
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'send_events') as send_events:
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self.nova_notifier.send_network_change('update_floatingip',
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{}, {})
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self.assertFalse(send_events.called, False)
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def test_nova_send_events_returns_bad_list(self):
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with mock.patch.object(
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self.nova_notifier.nclient.server_external_events,
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'create') as nclient_create:
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nclient_create.return_value = 'i am a string!'
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self.nova_notifier.send_events()
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def test_nova_send_events_raises(self):
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with mock.patch.object(
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self.nova_notifier.nclient.server_external_events,
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'create') as nclient_create:
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nclient_create.side_effect = Exception
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self.nova_notifier.send_events()
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def test_nova_send_events_returns_non_200(self):
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with mock.patch.object(
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self.nova_notifier.nclient.server_external_events,
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'create') as nclient_create:
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nclient_create.return_value = [{'code': 404,
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'name': 'network-changed',
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'server_uuid': 'uuid'}]
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self.nova_notifier.pending_events.append(
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{'name': 'network-changed', 'server_uuid': 'uuid'})
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self.nova_notifier.send_events()
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def test_nova_send_events_return_200(self):
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with mock.patch.object(
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self.nova_notifier.nclient.server_external_events,
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'create') as nclient_create:
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nclient_create.return_value = [{'code': 200,
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'name': 'network-changed',
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'server_uuid': 'uuid'}]
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self.nova_notifier.pending_events.append(
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{'name': 'network-changed', 'server_uuid': 'uuid'})
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self.nova_notifier.send_events()
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def test_nova_send_events_multiple(self):
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with mock.patch.object(
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self.nova_notifier.nclient.server_external_events,
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'create') as nclient_create:
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nclient_create.return_value = [{'code': 200,
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'name': 'network-changed',
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'server_uuid': 'uuid'},
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{'code': 200,
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'name': 'network-changed',
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'server_uuid': 'uuid'}]
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self.nova_notifier.pending_events.append(
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{'name': 'network-changed', 'server_uuid': 'uuid'})
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self.nova_notifier.pending_events.append(
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{'name': 'network-changed', 'server_uuid': 'uuid'})
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self.nova_notifier.send_events()
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