# Copyright 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
from taskflow.patterns import linear_flow
from taskflow.patterns import unordered_flow
from octavia.common import constants
from octavia.controller.worker.v2.tasks import amphora_driver_tasks
from octavia.controller.worker.v2.tasks import database_tasks
from octavia.controller.worker.v2.tasks import lifecycle_tasks
from octavia.controller.worker.v2.tasks import network_tasks
[docs]
class ListenerFlows:
[docs]
def get_create_listener_flow(self, flavor_dict=None):
"""Create a flow to create a listener
:returns: The flow for creating a listener
"""
create_listener_flow = linear_flow.Flow(constants.CREATE_LISTENER_FLOW)
create_listener_flow.add(lifecycle_tasks.ListenersToErrorOnRevertTask(
requires=constants.LISTENERS))
create_listener_flow.add(amphora_driver_tasks.ListenersUpdate(
requires=constants.LOADBALANCER_ID))
create_listener_flow.add(network_tasks.UpdateVIP(
requires=constants.LISTENERS))
if flavor_dict and flavor_dict.get(constants.SRIOV_VIP, False):
create_listener_flow.add(*self._get_firewall_rules_subflow(
flavor_dict))
create_listener_flow.add(database_tasks.
MarkLBAndListenersActiveInDB(
requires=(constants.LOADBALANCER_ID,
constants.LISTENERS)))
return create_listener_flow
[docs]
def get_create_all_listeners_flow(self, flavor_dict=None):
"""Create a flow to create all listeners
:returns: The flow for creating all listeners
"""
create_all_listeners_flow = linear_flow.Flow(
constants.CREATE_LISTENERS_FLOW)
create_all_listeners_flow.add(
database_tasks.GetListenersFromLoadbalancer(
requires=constants.LOADBALANCER,
provides=constants.LISTENERS))
create_all_listeners_flow.add(database_tasks.ReloadLoadBalancer(
requires=constants.LOADBALANCER_ID,
provides=constants.LOADBALANCER))
create_all_listeners_flow.add(amphora_driver_tasks.ListenersUpdate(
requires=constants.LOADBALANCER_ID))
create_all_listeners_flow.add(network_tasks.UpdateVIP(
requires=constants.LISTENERS))
if flavor_dict and flavor_dict.get(constants.SRIOV_VIP, False):
create_all_listeners_flow.add(*self._get_firewall_rules_subflow(
flavor_dict))
create_all_listeners_flow.add(
database_tasks.MarkHealthMonitorsOnlineInDB(
requires=constants.LOADBALANCER))
return create_all_listeners_flow
[docs]
def get_delete_listener_flow(self, flavor_dict=None):
"""Create a flow to delete a listener
:returns: The flow for deleting a listener
"""
delete_listener_flow = linear_flow.Flow(constants.DELETE_LISTENER_FLOW)
delete_listener_flow.add(lifecycle_tasks.ListenerToErrorOnRevertTask(
requires=constants.LISTENER))
delete_listener_flow.add(amphora_driver_tasks.ListenerDelete(
requires=constants.LISTENER))
delete_listener_flow.add(network_tasks.UpdateVIPForDelete(
requires=constants.LOADBALANCER_ID))
delete_listener_flow.add(database_tasks.DeleteListenerInDB(
requires=constants.LISTENER))
if flavor_dict and flavor_dict.get(constants.SRIOV_VIP, False):
delete_listener_flow.add(*self._get_firewall_rules_subflow(
flavor_dict))
delete_listener_flow.add(database_tasks.DecrementListenerQuota(
requires=constants.PROJECT_ID))
delete_listener_flow.add(database_tasks.MarkLBActiveInDBByListener(
requires=constants.LISTENER))
return delete_listener_flow
[docs]
def get_delete_listener_internal_flow(self, listener, flavor_dict=None):
"""Create a flow to delete a listener and l7policies internally
(will skip deletion on the amp and marking LB active)
:returns: The flow for deleting a listener
"""
listener_id = listener[constants.LISTENER_ID]
delete_listener_flow = linear_flow.Flow(
constants.DELETE_LISTENER_FLOW + '-' + listener_id)
# Should cascade delete all L7 policies
delete_listener_flow.add(network_tasks.UpdateVIPForDelete(
name='delete_update_vip_' + listener_id,
requires=constants.LOADBALANCER_ID))
delete_listener_flow.add(database_tasks.DeleteListenerInDB(
name='delete_listener_in_db_' + listener_id,
requires=constants.LISTENER,
inject={constants.LISTENER: listener}))
# Currently the flavor_dict will always be None since there is
# no point updating the firewall rules when deleting the LB.
# However, this may be used for additional flows in the future, so
# adding this code for completeness.
if flavor_dict and flavor_dict.get(constants.SRIOV_VIP, False):
delete_listener_flow.add(*self._get_firewall_rules_subflow(
flavor_dict))
delete_listener_flow.add(database_tasks.DecrementListenerQuota(
name='decrement_listener_quota_' + listener_id,
requires=constants.PROJECT_ID))
return delete_listener_flow
[docs]
def get_update_listener_flow(self, flavor_dict=None):
"""Create a flow to update a listener
:returns: The flow for updating a listener
"""
update_listener_flow = linear_flow.Flow(constants.UPDATE_LISTENER_FLOW)
update_listener_flow.add(lifecycle_tasks.ListenerToErrorOnRevertTask(
requires=constants.LISTENER))
update_listener_flow.add(amphora_driver_tasks.ListenersUpdate(
requires=constants.LOADBALANCER_ID))
update_listener_flow.add(network_tasks.UpdateVIP(
requires=constants.LISTENERS))
if flavor_dict and flavor_dict.get(constants.SRIOV_VIP, False):
update_listener_flow.add(*self._get_firewall_rules_subflow(
flavor_dict))
update_listener_flow.add(database_tasks.UpdateListenerInDB(
requires=[constants.LISTENER, constants.UPDATE_DICT]))
update_listener_flow.add(database_tasks.
MarkLBAndListenersActiveInDB(
requires=(constants.LOADBALANCER_ID,
constants.LISTENERS)))
return update_listener_flow
def _get_firewall_rules_subflow(self, flavor_dict):
"""Creates a subflow that updates the firewall rules in the amphorae.
:returns: The subflow for updating firewall rules in the amphorae.
"""
sf_name = constants.FIREWALL_RULES_SUBFLOW
fw_rules_subflow = linear_flow.Flow(sf_name)
fw_rules_subflow.add(database_tasks.GetAmphoraeFromLoadbalancer(
name=sf_name + '-' + constants.GET_AMPHORAE_FROM_LB,
requires=constants.LOADBALANCER_ID,
provides=constants.AMPHORAE))
fw_rules_subflow.add(network_tasks.GetAmphoraeNetworkConfigs(
name=sf_name + '-' + constants.GET_AMP_NETWORK_CONFIG,
requires=constants.LOADBALANCER_ID,
provides=constants.AMPHORAE_NETWORK_CONFIG))
update_amps_subflow = unordered_flow.Flow(
constants.AMP_UPDATE_FW_SUBFLOW)
amp_0_subflow = linear_flow.Flow('amp-0-fw-update')
amp_0_subflow.add(database_tasks.GetAmphoraFirewallRules(
name=sf_name + '-0-' + constants.GET_AMPHORA_FIREWALL_RULES,
requires=(constants.AMPHORAE, constants.AMPHORAE_NETWORK_CONFIG),
provides=constants.AMPHORA_FIREWALL_RULES,
inject={constants.AMPHORA_INDEX: 0}))
amp_0_subflow.add(amphora_driver_tasks.SetAmphoraFirewallRules(
name=sf_name + '-0-' + constants.SET_AMPHORA_FIREWALL_RULES,
requires=(constants.AMPHORAE, constants.AMPHORA_FIREWALL_RULES),
inject={constants.AMPHORA_INDEX: 0}))
update_amps_subflow.add(amp_0_subflow)
if (flavor_dict[constants.LOADBALANCER_TOPOLOGY] ==
constants.TOPOLOGY_ACTIVE_STANDBY):
amp_1_subflow = linear_flow.Flow('amp-1-fw-update')
amp_1_subflow.add(database_tasks.GetAmphoraFirewallRules(
name=sf_name + '-1-' + constants.GET_AMPHORA_FIREWALL_RULES,
requires=(constants.AMPHORAE,
constants.AMPHORAE_NETWORK_CONFIG),
provides=constants.AMPHORA_FIREWALL_RULES,
inject={constants.AMPHORA_INDEX: 1}))
amp_1_subflow.add(amphora_driver_tasks.SetAmphoraFirewallRules(
name=sf_name + '-1-' + constants.SET_AMPHORA_FIREWALL_RULES,
requires=(constants.AMPHORAE,
constants.AMPHORA_FIREWALL_RULES),
inject={constants.AMPHORA_INDEX: 1}))
update_amps_subflow.add(amp_1_subflow)
fw_rules_subflow.add(update_amps_subflow)
return fw_rules_subflow
