def get_new_LB_networking_subflow(self):
"""Create a sub-flow to setup networking.
:returns: The flow to setup networking for a new amphora
"""
new_LB_net_subflow = linear_flow.Flow(constants.
LOADBALANCER_NETWORKING_SUBFLOW)
new_LB_net_subflow.add(network_tasks.AllocateVIP(
requires=constants.LOADBALANCER,
provides=constants.VIP))
new_LB_net_subflow.add(database_tasks.UpdateVIPAfterAllocation(
requires=(constants.LOADBALANCER_ID, constants.VIP),
provides=constants.LOADBALANCER))
new_LB_net_subflow.add(network_tasks.PlugVIP(
requires=constants.LOADBALANCER,
provides=constants.AMPS_DATA))
new_LB_net_subflow.add(network_tasks.ApplyQos(
requires=(constants.LOADBALANCER, constants.AMPS_DATA,
constants.UPDATE_DICT)))
new_LB_net_subflow.add(database_tasks.UpdateAmphoraeVIPData(
requires=constants.AMPS_DATA))
new_LB_net_subflow.add(database_tasks.ReloadLoadBalancer(
name=constants.RELOAD_LB_AFTER_PLUG_VIP,
requires=constants.LOADBALANCER_ID,
provides=constants.LOADBALANCER))
new_LB_net_subflow.add(network_tasks.GetAmphoraeNetworkConfigs(
requires=constants.LOADBALANCER,
provides=constants.AMPHORAE_NETWORK_CONFIG))
new_LB_net_subflow.add(amphora_driver_tasks.AmphoraePostVIPPlug(
requires=(constants.LOADBALANCER,
constants.AMPHORAE_NETWORK_CONFIG)))
return new_LB_net_subflow
def test_get_amphorae_network_configs(self, mock_get_net_driver):
mock_driver = mock.MagicMock()
mock_get_net_driver.return_value = mock_driver
lb = o_data_models.LoadBalancer()
net_task = network_tasks.GetAmphoraeNetworkConfigs()
net_task.execute(lb)
mock_driver.get_network_configs.assert_called_once_with(lb)
def get_vrrp_subflow(self, prefix):
sf_name = prefix + '-' + constants.GET_VRRP_SUBFLOW
vrrp_subflow = linear_flow.Flow(sf_name)
vrrp_subflow.add(
network_tasks.GetAmphoraeNetworkConfigs(
name=sf_name + '-' + constants.GET_AMP_NETWORK_CONFIG,
requires=constants.LOADBALANCER,
provides=constants.AMPHORAE_NETWORK_CONFIG))
vrrp_subflow.add(
amphora_driver_tasks.AmphoraUpdateVRRPInterface(
name=sf_name + '-' + constants.AMP_UPDATE_VRRP_INTF,
requires=constants.LOADBALANCER,
provides=constants.LOADBALANCER))
vrrp_subflow.add(
database_tasks.CreateVRRPGroupForLB(
name=sf_name + '-' + constants.CREATE_VRRP_GROUP_FOR_LB,
requires=constants.LOADBALANCER,
provides=constants.LOADBALANCER))
vrrp_subflow.add(
amphora_driver_tasks.AmphoraVRRPUpdate(
name=sf_name + '-' + constants.AMP_VRRP_UPDATE,
requires=(constants.LOADBALANCER,
constants.AMPHORAE_NETWORK_CONFIG)))
vrrp_subflow.add(
amphora_driver_tasks.AmphoraVRRPStart(
name=sf_name + '-' + constants.AMP_VRRP_START,
requires=constants.LOADBALANCER))
return vrrp_subflow
def get_new_LB_networking_subflow(self):
"""Create a sub-flow to setup networking.
:returns: The flow to setup networking for a new amphora
"""
LOG.info("Inside network subflow")
new_LB_net_subflow = linear_flow.Flow(
constants.LOADBALANCER_NETWORKING_SUBFLOW)
new_LB_net_subflow.add(
network_tasks.AllocateVIP(requires=constants.LOADBALANCER,
provides=constants.VIP))
new_LB_net_subflow.add(
database_tasks.UpdateVIPAfterAllocation(
requires=(constants.LOADBALANCER_ID, constants.VIP),
provides=constants.LOADBALANCER))
new_LB_net_subflow.add(
network_tasks.PlugVIP(requires=constants.LOADBALANCER,
provides=constants.AMPS_DATA))
LOG.info("After plugging the VIP")
new_LB_net_subflow.add(
network_tasks.ApplyQos(requires=(constants.LOADBALANCER,
constants.AMPS_DATA,
constants.UPDATE_DICT)))
new_LB_net_subflow.add(
database_tasks.UpdateAmphoraVIPData(requires=constants.AMPS_DATA))
new_LB_net_subflow.add(
database_tasks.ReloadLoadBalancer(
name=constants.RELOAD_LB_AFTER_PLUG_VIP,
requires=constants.LOADBALANCER_ID,
provides=constants.LOADBALANCER))
new_LB_net_subflow.add(
network_tasks.GetAmphoraeNetworkConfigs(
requires=constants.LOADBALANCER,
provides=constants.AMPHORAE_NETWORK_CONFIG))
new_LB_net_subflow.add(
database_tasks.GetAmphoraeFromLoadbalancer(
requires=constants.LOADBALANCER, provides=constants.AMPHORA))
#new_LB_net_subflow.add(amphora_driver_tasks.AmphoraePostVIPPlug(
# requires=(constants.LOADBALANCER,
# constants.AMPHORAE_NETWORK_CONFIG)))
# Get VThunder details from database
#new_LB_net_subflow.add(a10_database_tasks.GetVThunderByLoadBalancer(
# requires=constants.LOADBALANCER,
# provides=a10constants.VTHUNDER))
new_LB_net_subflow.add(
vthunder_tasks.AmphoraePostVIPPlug(
requires=(constants.LOADBALANCER, a10constants.VTHUNDER)))
new_LB_net_subflow.add(
vthunder_tasks.VThunderComputeConnectivityWait(
requires=(a10constants.VTHUNDER, constants.AMPHORA)))
new_LB_net_subflow.add(
vthunder_tasks.EnableInterface(requires=a10constants.VTHUNDER))
LOG.info("AT the end of subflow")
return new_LB_net_subflow
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,
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
db_lb = self.lb_repo.get(db_apis.get_session(),
id=load_balancer[constants.LOADBALANCER_ID])
for amp in db_lb.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
def get_vrrp_subflow(self, prefix, timeout_dict=None,
create_vrrp_group=True):
sf_name = prefix + '-' + constants.GET_VRRP_SUBFLOW
vrrp_subflow = linear_flow.Flow(sf_name)
# Optimization for failover flow. No reason to call this
# when configuring the secondary amphora.
if create_vrrp_group:
vrrp_subflow.add(database_tasks.CreateVRRPGroupForLB(
name=sf_name + '-' + constants.CREATE_VRRP_GROUP_FOR_LB,
requires=constants.LOADBALANCER_ID))
vrrp_subflow.add(network_tasks.GetAmphoraeNetworkConfigs(
name=sf_name + '-' + constants.GET_AMP_NETWORK_CONFIG,
requires=constants.LOADBALANCER_ID,
provides=constants.AMPHORAE_NETWORK_CONFIG))
# VRRP 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('VRRP-update-subflow')
# We have three tasks to run in order, per amphora
amp_0_subflow = linear_flow.Flow('VRRP-amp-0-update-subflow')
amp_0_subflow.add(amphora_driver_tasks.AmphoraIndexUpdateVRRPInterface(
name=sf_name + '-0-' + constants.AMP_UPDATE_VRRP_INTF,
requires=constants.AMPHORAE,
inject={constants.AMPHORA_INDEX: 0,
constants.TIMEOUT_DICT: timeout_dict},
provides=constants.AMP_VRRP_INT))
amp_0_subflow.add(amphora_driver_tasks.AmphoraIndexVRRPUpdate(
name=sf_name + '-0-' + constants.AMP_VRRP_UPDATE,
requires=(constants.LOADBALANCER_ID,
constants.AMPHORAE_NETWORK_CONFIG, constants.AMPHORAE,
constants.AMP_VRRP_INT),
inject={constants.AMPHORA_INDEX: 0,
constants.TIMEOUT_DICT: timeout_dict}))
amp_0_subflow.add(amphora_driver_tasks.AmphoraIndexVRRPStart(
name=sf_name + '-0-' + constants.AMP_VRRP_START,
requires=constants.AMPHORAE,
inject={constants.AMPHORA_INDEX: 0,
constants.TIMEOUT_DICT: timeout_dict}))
amp_1_subflow = linear_flow.Flow('VRRP-amp-1-update-subflow')
amp_1_subflow.add(amphora_driver_tasks.AmphoraIndexUpdateVRRPInterface(
name=sf_name + '-1-' + constants.AMP_UPDATE_VRRP_INTF,
requires=constants.AMPHORAE,
inject={constants.AMPHORA_INDEX: 1,
constants.TIMEOUT_DICT: timeout_dict},
provides=constants.AMP_VRRP_INT))
amp_1_subflow.add(amphora_driver_tasks.AmphoraIndexVRRPUpdate(
name=sf_name + '-1-' + constants.AMP_VRRP_UPDATE,
requires=(constants.LOADBALANCER_ID,
constants.AMPHORAE_NETWORK_CONFIG, constants.AMPHORAE,
constants.AMP_VRRP_INT),
inject={constants.AMPHORA_INDEX: 1,
constants.TIMEOUT_DICT: timeout_dict}))
amp_1_subflow.add(amphora_driver_tasks.AmphoraIndexVRRPStart(
name=sf_name + '-1-' + constants.AMP_VRRP_START,
requires=constants.AMPHORAE,
inject={constants.AMPHORA_INDEX: 1,
constants.TIMEOUT_DICT: timeout_dict}))
update_amps_subflow.add(amp_0_subflow)
update_amps_subflow.add(amp_1_subflow)
vrrp_subflow.add(update_amps_subflow)
return vrrp_subflow
