def test_compute_delete(self, mock_driver): mock_driver.delete.side_effect = [ mock.DEFAULT, exceptions.OctaviaException('boom'), mock.DEFAULT, exceptions.OctaviaException('boom'), exceptions.OctaviaException('boom'), exceptions.OctaviaException('boom'), exceptions.OctaviaException('boom')] delete_compute = compute_tasks.ComputeDelete() # Limit the retry attempts for the test run to save time delete_compute.execute.retry.stop = tenacity.stop_after_attempt(2) delete_compute.execute(_amphora_mock) mock_driver.delete.assert_called_once_with(COMPUTE_ID) # Test retry after a compute exception mock_driver.reset_mock() delete_compute.execute(_amphora_mock) mock_driver.delete.assert_has_calls([mock.call(COMPUTE_ID), mock.call(COMPUTE_ID)]) # Test passive failure mock_driver.reset_mock() delete_compute.execute(_amphora_mock, passive_failure=True) mock_driver.delete.assert_has_calls([mock.call(COMPUTE_ID), mock.call(COMPUTE_ID)]) # Test non-passive failure mock_driver.reset_mock() self.assertRaises(exceptions.OctaviaException, delete_compute.execute, _amphora_mock, passive_failure=False)
def get_delete_amphora_flow(self): """Creates a flow to delete an amphora. This should be configurable in the config file :returns: The flow for deleting the amphora :raises AmphoraNotFound: The referenced Amphora was not found """ delete_amphora_flow = linear_flow.Flow(constants.DELETE_AMPHORA_FLOW) delete_amphora_flow.add( lifecycle_tasks.AmphoraToErrorOnRevertTask( requires=constants.AMPHORA)) delete_amphora_flow.add( database_tasks.MarkAmphoraPendingDeleteInDB( requires=constants.AMPHORA)) delete_amphora_flow.add( database_tasks.MarkAmphoraHealthBusy(requires=constants.AMPHORA)) delete_amphora_flow.add( compute_tasks.ComputeDelete(requires=constants.AMPHORA)) delete_amphora_flow.add( database_tasks.DisableAmphoraHealthMonitoring( requires=constants.AMPHORA)) delete_amphora_flow.add( database_tasks.MarkAmphoraDeletedInDB(requires=constants.AMPHORA)) return delete_amphora_flow
def get_failover_spare_vthunder_flow(self): """Perform failover for spare vthunder""" sf_name = 'a10-house-keeper-failover-spare-vthunder' failover_flow = linear_flow.Flow(sf_name) failover_flow.add( a10_database_tasks.GetVThunderAmphora( name=sf_name + '-' + a10constants.GET_VTHUNDER_AMPHORA, requires=a10constants.VTHUNDER, provides=constants.AMPHORA)) failover_flow.add( compute.ComputeDelete(name=sf_name + '-' + a10constants.COMPUTE_DELETE, requires=constants.AMPHORA)) failover_flow.add( a10_database_tasks.DeleteStaleSpareVThunder( name=sf_name + '-' + a10constants.DELETE_STALE_SPARE_VTHUNDER, rebind={a10constants.SPARE_VTHUNDER: a10constants.VTHUNDER})) return failover_flow
def test_compute_delete(self, mock_driver): delete_compute = compute_tasks.ComputeDelete() delete_compute.execute(_amphora_mock) mock_driver.delete.assert_called_once_with(COMPUTE_ID)
def get_delete_amphora_flow( self, amphora, retry_attempts=CONF.controller_worker.amphora_delete_retries, retry_interval=(CONF.controller_worker.amphora_delete_retry_interval)): """Creates a subflow to delete an amphora and it's port. This flow is idempotent and safe to retry. :param amphora: An amphora object. :param retry_attempts: The number of times the flow is retried. :param retry_interval: The time to wait, in seconds, between retries. :returns: The subflow for deleting the amphora. :raises AmphoraNotFound: The referenced Amphora was not found. """ delete_amphora_flow = linear_flow.Flow( name=constants.DELETE_AMPHORA_FLOW + '-' + amphora.id, retry=retry_tasks.SleepingRetryTimesController( name='retry-' + constants.DELETE_AMPHORA_FLOW + '-' + amphora.id, attempts=retry_attempts, interval=retry_interval)) delete_amphora_flow.add( lifecycle_tasks.AmphoraToErrorOnRevertTask( name=constants.AMPHORA_TO_ERROR_ON_REVERT + '-' + amphora.id, inject={constants.AMPHORA: amphora})) delete_amphora_flow.add( database_tasks.MarkAmphoraPendingDeleteInDB( name=constants.MARK_AMPHORA_PENDING_DELETE + '-' + amphora.id, inject={constants.AMPHORA: amphora})) delete_amphora_flow.add( database_tasks.MarkAmphoraHealthBusy( name=constants.MARK_AMPHORA_HEALTH_BUSY + '-' + amphora.id, inject={constants.AMPHORA: amphora})) delete_amphora_flow.add( compute_tasks.ComputeDelete(name=constants.DELETE_AMPHORA + '-' + amphora.id, inject={ constants.AMPHORA: amphora, constants.PASSIVE_FAILURE: True })) delete_amphora_flow.add( database_tasks.DisableAmphoraHealthMonitoring( name=constants.DISABLE_AMP_HEALTH_MONITORING + '-' + amphora.id, inject={constants.AMPHORA: amphora})) delete_amphora_flow.add( database_tasks.MarkAmphoraDeletedInDB( name=constants.MARK_AMPHORA_DELETED + '-' + amphora.id, inject={constants.AMPHORA: amphora})) if amphora.vrrp_port_id: delete_amphora_flow.add( network_tasks.DeletePort( name=(constants.DELETE_PORT + '-' + str(amphora.id) + '-' + str(amphora.vrrp_port_id)), inject={ constants.PORT_ID: amphora.vrrp_port_id, constants.PASSIVE_FAILURE: True })) # TODO(johnsom) What about cleaning up any member ports? # maybe we should get the list of attached ports prior to delete # and call delete on them here. Fix this as part of # https://storyboard.openstack.org/#!/story/2007077 return delete_amphora_flow
def get_failover_flow(self, role=constants.ROLE_STANDALONE, load_balancer=None): """Creates a flow to failover a stale amphora :returns: The flow for amphora failover """ failover_amphora_flow = linear_flow.Flow( constants.FAILOVER_AMPHORA_FLOW) failover_amphora_flow.add( lifecycle_tasks.AmphoraToErrorOnRevertTask( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) failover_amphora_flow.add( network_tasks.FailoverPreparationForAmphora( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) # Note: It seems intuitive to boot an amphora prior to deleting # the old amphora, however this is a complicated issue. # If the target host (due to anit-affinity) is resource # constrained, this will fail where a post-delete will # succeed. Since this is async with the API it would result # in the LB ending in ERROR though the amps are still alive. # Consider in the future making this a complicated # try-on-failure-retry flow, or move upgrade failovers to be # synchronous with the API. For now spares pool and act/stdby # will mitigate most of this delay. # Delete the old amphora failover_amphora_flow.add( database_tasks.MarkAmphoraPendingDeleteInDB( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) failover_amphora_flow.add( database_tasks.MarkAmphoraHealthBusy( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) failover_amphora_flow.add( compute_tasks.ComputeDelete( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) failover_amphora_flow.add( network_tasks.WaitForPortDetach( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) failover_amphora_flow.add( database_tasks.MarkAmphoraDeletedInDB( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) # If this is an unallocated amp (spares pool), we're done if not load_balancer: failover_amphora_flow.add( database_tasks.DisableAmphoraHealthMonitoring( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) return failover_amphora_flow # Save failed amphora details for later failover_amphora_flow.add( database_tasks.GetAmphoraDetails( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA, provides=constants.AMP_DATA)) # Get a new amphora # Note: Role doesn't matter here. We will update it later. get_amp_subflow = self.get_amphora_for_lb_subflow( prefix=constants.FAILOVER_AMPHORA_FLOW) failover_amphora_flow.add(get_amp_subflow) # Update the new amphora with the failed amphora details failover_amphora_flow.add( database_tasks.UpdateAmpFailoverDetails( requires=(constants.AMPHORA, constants.AMP_DATA))) # Update the data stored in the flow from the database failover_amphora_flow.add( database_tasks.ReloadLoadBalancer( requires=constants.LOADBALANCER_ID, provides=constants.LOADBALANCER)) failover_amphora_flow.add( database_tasks.ReloadAmphora(requires=constants.AMPHORA_ID, provides=constants.AMPHORA)) # Prepare to reconnect the network interface(s) failover_amphora_flow.add( network_tasks.GetAmphoraeNetworkConfigs( requires=constants.LOADBALANCER, provides=constants.AMPHORAE_NETWORK_CONFIG)) failover_amphora_flow.add( database_tasks.GetListenersFromLoadbalancer( requires=constants.LOADBALANCER, provides=constants.LISTENERS)) failover_amphora_flow.add( database_tasks.GetAmphoraeFromLoadbalancer( requires=constants.LOADBALANCER, provides=constants.AMPHORAE)) # Plug the VIP ports into the new amphora # The reason for moving these steps here is the udp listeners want to # do some kernel configuration before Listener update for forbidding # failure during rebuild amphora. failover_amphora_flow.add( network_tasks.PlugVIPPort( requires=(constants.AMPHORA, constants.AMPHORAE_NETWORK_CONFIG))) failover_amphora_flow.add( amphora_driver_tasks.AmphoraPostVIPPlug( requires=(constants.AMPHORA, constants.LOADBALANCER, constants.AMPHORAE_NETWORK_CONFIG))) # Listeners update needs to be run on all amphora to update # their peer configurations. So parallelize this with an # unordered subflow. update_amps_subflow = unordered_flow.Flow( constants.UPDATE_AMPS_SUBFLOW) timeout_dict = { constants.CONN_MAX_RETRIES: CONF.haproxy_amphora.active_connection_max_retries, constants.CONN_RETRY_INTERVAL: CONF.haproxy_amphora.active_connection_rety_interval } # Setup parallel flows for each amp. We don't know the new amp # details at flow creation time, so setup a subflow for each # amp on the LB, they let the task index into a list of amps # to find the amphora it should work on. amp_index = 0 for amp in load_balancer.amphorae: if amp.status == constants.DELETED: continue update_amps_subflow.add( amphora_driver_tasks.AmpListenersUpdate( name=constants.AMP_LISTENER_UPDATE + '-' + str(amp_index), requires=(constants.LOADBALANCER, constants.AMPHORAE), inject={ constants.AMPHORA_INDEX: amp_index, constants.TIMEOUT_DICT: timeout_dict })) amp_index += 1 failover_amphora_flow.add(update_amps_subflow) # Plug the member networks into the new amphora failover_amphora_flow.add( network_tasks.CalculateAmphoraDelta( requires=(constants.LOADBALANCER, constants.AMPHORA), provides=constants.DELTA)) failover_amphora_flow.add( network_tasks.HandleNetworkDelta(requires=(constants.AMPHORA, constants.DELTA), provides=constants.ADDED_PORTS)) failover_amphora_flow.add( amphora_driver_tasks.AmphoraePostNetworkPlug( requires=(constants.LOADBALANCER, constants.ADDED_PORTS))) failover_amphora_flow.add( database_tasks.ReloadLoadBalancer( name='octavia-failover-LB-reload-2', requires=constants.LOADBALANCER_ID, provides=constants.LOADBALANCER)) # Handle the amphora role and VRRP if necessary if role == constants.ROLE_MASTER: failover_amphora_flow.add( database_tasks.MarkAmphoraMasterInDB( name=constants.MARK_AMP_MASTER_INDB, requires=constants.AMPHORA)) vrrp_subflow = self.get_vrrp_subflow(role) failover_amphora_flow.add(vrrp_subflow) elif role == constants.ROLE_BACKUP: failover_amphora_flow.add( database_tasks.MarkAmphoraBackupInDB( name=constants.MARK_AMP_BACKUP_INDB, requires=constants.AMPHORA)) vrrp_subflow = self.get_vrrp_subflow(role) failover_amphora_flow.add(vrrp_subflow) elif role == constants.ROLE_STANDALONE: failover_amphora_flow.add( database_tasks.MarkAmphoraStandAloneInDB( name=constants.MARK_AMP_STANDALONE_INDB, requires=constants.AMPHORA)) failover_amphora_flow.add( amphora_driver_tasks.ListenersStart( requires=(constants.LOADBALANCER, constants.AMPHORA))) failover_amphora_flow.add( database_tasks.DisableAmphoraHealthMonitoring( rebind={constants.AMPHORA: constants.FAILED_AMPHORA}, requires=constants.AMPHORA)) return failover_amphora_flow