# 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 MemberFlows(object):
[docs] def get_create_member_flow(self):
"""Create a flow to create a member
:returns: The flow for creating a member
"""
create_member_flow = linear_flow.Flow(constants.CREATE_MEMBER_FLOW)
create_member_flow.add(lifecycle_tasks.MemberToErrorOnRevertTask(
requires=[constants.MEMBER,
constants.LISTENERS,
constants.LOADBALANCER,
constants.POOL_ID]))
create_member_flow.add(database_tasks.MarkMemberPendingCreateInDB(
requires=constants.MEMBER))
create_member_flow.add(network_tasks.CalculateDelta(
requires=(constants.LOADBALANCER, constants.AVAILABILITY_ZONE),
provides=constants.DELTAS))
create_member_flow.add(network_tasks.HandleNetworkDeltas(
requires=(constants.DELTAS, constants.LOADBALANCER),
provides=constants.UPDATED_PORTS))
create_member_flow.add(network_tasks.GetAmphoraeNetworkConfigs(
requires=constants.LOADBALANCER_ID,
provides=constants.AMPHORAE_NETWORK_CONFIG))
create_member_flow.add(amphora_driver_tasks.AmphoraePostNetworkPlug(
requires=(constants.LOADBALANCER, constants.UPDATED_PORTS,
constants.AMPHORAE_NETWORK_CONFIG)))
create_member_flow.add(amphora_driver_tasks.ListenersUpdate(
requires=constants.LOADBALANCER_ID))
create_member_flow.add(database_tasks.MarkMemberActiveInDB(
requires=constants.MEMBER))
create_member_flow.add(database_tasks.MarkPoolActiveInDB(
requires=constants.POOL_ID))
create_member_flow.add(database_tasks.
MarkLBAndListenersActiveInDB(
requires=(constants.LISTENERS,
constants.LOADBALANCER_ID)))
return create_member_flow
[docs] def get_delete_member_flow(self):
"""Create a flow to delete a member
:returns: The flow for deleting a member
"""
delete_member_flow = linear_flow.Flow(constants.DELETE_MEMBER_FLOW)
delete_member_flow.add(lifecycle_tasks.MemberToErrorOnRevertTask(
requires=[constants.MEMBER,
constants.LISTENERS,
constants.LOADBALANCER,
constants.POOL_ID]))
delete_member_flow.add(database_tasks.MarkMemberPendingDeleteInDB(
requires=constants.MEMBER))
delete_member_flow.add(network_tasks.CalculateDelta(
requires=(constants.LOADBALANCER, constants.AVAILABILITY_ZONE),
provides=constants.DELTAS))
delete_member_flow.add(network_tasks.HandleNetworkDeltas(
requires=(constants.DELTAS, constants.LOADBALANCER),
provides=constants.UPDATED_PORTS))
delete_member_flow.add(network_tasks.GetAmphoraeNetworkConfigs(
requires=constants.LOADBALANCER_ID,
provides=constants.AMPHORAE_NETWORK_CONFIG))
delete_member_flow.add(amphora_driver_tasks.AmphoraePostNetworkPlug(
requires=(constants.LOADBALANCER, constants.UPDATED_PORTS,
constants.AMPHORAE_NETWORK_CONFIG)))
delete_member_flow.add(amphora_driver_tasks.ListenersUpdate(
requires=constants.LOADBALANCER_ID))
delete_member_flow.add(database_tasks.DeleteMemberInDB(
requires=constants.MEMBER))
delete_member_flow.add(database_tasks.DecrementMemberQuota(
requires=constants.PROJECT_ID))
delete_member_flow.add(database_tasks.MarkPoolActiveInDB(
requires=constants.POOL_ID))
delete_member_flow.add(database_tasks.
MarkLBAndListenersActiveInDB(
requires=(constants.LISTENERS,
constants.LOADBALANCER_ID)))
return delete_member_flow
[docs] def get_update_member_flow(self):
"""Create a flow to update a member
:returns: The flow for updating a member
"""
update_member_flow = linear_flow.Flow(constants.UPDATE_MEMBER_FLOW)
update_member_flow.add(lifecycle_tasks.MemberToErrorOnRevertTask(
requires=[constants.MEMBER,
constants.LISTENERS,
constants.LOADBALANCER,
constants.POOL_ID]))
update_member_flow.add(database_tasks.MarkMemberPendingUpdateInDB(
requires=constants.MEMBER))
update_member_flow.add(amphora_driver_tasks.ListenersUpdate(
requires=constants.LOADBALANCER_ID))
update_member_flow.add(database_tasks.UpdateMemberInDB(
requires=[constants.MEMBER, constants.UPDATE_DICT]))
update_member_flow.add(database_tasks.MarkMemberActiveInDB(
requires=constants.MEMBER))
update_member_flow.add(database_tasks.MarkPoolActiveInDB(
requires=constants.POOL_ID))
update_member_flow.add(database_tasks.
MarkLBAndListenersActiveInDB(
requires=(constants.LISTENERS,
constants.LOADBALANCER_ID)))
return update_member_flow
[docs] def get_batch_update_members_flow(self, old_members, new_members,
updated_members):
"""Create a flow to batch update members
:returns: The flow for batch updating members
"""
batch_update_members_flow = linear_flow.Flow(
constants.BATCH_UPDATE_MEMBERS_FLOW)
unordered_members_flow = unordered_flow.Flow(
constants.UNORDERED_MEMBER_UPDATES_FLOW)
unordered_members_active_flow = unordered_flow.Flow(
constants.UNORDERED_MEMBER_ACTIVE_FLOW)
# Delete old members
unordered_members_flow.add(
lifecycle_tasks.MembersToErrorOnRevertTask(
inject={constants.MEMBERS: old_members},
name='{flow}-deleted'.format(
flow=constants.MEMBER_TO_ERROR_ON_REVERT_FLOW)))
for m in old_members:
unordered_members_flow.add(database_tasks.DeleteMemberInDB(
inject={constants.MEMBER: m},
name='{flow}-{id}'.format(
id=m[constants.MEMBER_ID],
flow=constants.DELETE_MEMBER_INDB)))
unordered_members_flow.add(database_tasks.DecrementMemberQuota(
requires=constants.PROJECT_ID,
name='{flow}-{id}'.format(
id=m[constants.MEMBER_ID],
flow=constants.DECREMENT_MEMBER_QUOTA_FLOW)))
# Create new members
unordered_members_flow.add(
lifecycle_tasks.MembersToErrorOnRevertTask(
inject={constants.MEMBERS: new_members},
name='{flow}-created'.format(
flow=constants.MEMBER_TO_ERROR_ON_REVERT_FLOW)))
for m in new_members:
unordered_members_active_flow.add(
database_tasks.MarkMemberActiveInDB(
inject={constants.MEMBER: m},
name='{flow}-{id}'.format(
id=m[constants.MEMBER_ID],
flow=constants.MARK_MEMBER_ACTIVE_INDB)))
# Update existing members
unordered_members_flow.add(
lifecycle_tasks.MembersToErrorOnRevertTask(
# updated_members is a list of (obj, dict), only pass `obj`
inject={constants.MEMBERS: [m[0] for m in updated_members]},
name='{flow}-updated'.format(
flow=constants.MEMBER_TO_ERROR_ON_REVERT_FLOW)))
for m, um in updated_members:
um.pop(constants.ID, None)
unordered_members_active_flow.add(
database_tasks.MarkMemberActiveInDB(
inject={constants.MEMBER: m},
name='{flow}-{id}'.format(
id=m[constants.MEMBER_ID],
flow=constants.MARK_MEMBER_ACTIVE_INDB)))
batch_update_members_flow.add(unordered_members_flow)
# Done, do real updates
batch_update_members_flow.add(network_tasks.CalculateDelta(
requires=(constants.LOADBALANCER, constants.AVAILABILITY_ZONE),
provides=constants.DELTAS))
batch_update_members_flow.add(network_tasks.HandleNetworkDeltas(
requires=(constants.DELTAS, constants.LOADBALANCER),
provides=constants.UPDATED_PORTS))
batch_update_members_flow.add(network_tasks.GetAmphoraeNetworkConfigs(
requires=constants.LOADBALANCER_ID,
provides=constants.AMPHORAE_NETWORK_CONFIG))
batch_update_members_flow.add(
amphora_driver_tasks.AmphoraePostNetworkPlug(
requires=(constants.LOADBALANCER, constants.UPDATED_PORTS,
constants.AMPHORAE_NETWORK_CONFIG)))
# Update the Listener (this makes the changes active on the Amp)
batch_update_members_flow.add(amphora_driver_tasks.ListenersUpdate(
requires=constants.LOADBALANCER_ID))
# Mark all the members ACTIVE here, then pool then LB/Listeners
batch_update_members_flow.add(unordered_members_active_flow)
batch_update_members_flow.add(database_tasks.MarkPoolActiveInDB(
requires=constants.POOL_ID))
batch_update_members_flow.add(
database_tasks.MarkLBAndListenersActiveInDB(
requires=(constants.LISTENERS, constants.LOADBALANCER_ID)))
return batch_update_members_flow
