octavia.controller.worker.flows.pool_flows

Source code for octavia.controller.worker.flows.pool_flows

# Copyright 2015 Hewlett-Packard Development Company, L.P.
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# 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
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# http://www.apache.org/licenses/LICENSE-2.0
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# 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
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from taskflow.patterns import linear_flow

from octavia.common import constants
from octavia.controller.worker.tasks import amphora_driver_tasks
from octavia.controller.worker.tasks import database_tasks
from octavia.controller.worker.tasks import lifecycle_tasks
from octavia.controller.worker.tasks import model_tasks


[docs]class PoolFlows(object):
[docs] def get_create_pool_flow(self): """Create a flow to create a pool :returns: The flow for creating a pool """ create_pool_flow = linear_flow.Flow(constants.CREATE_POOL_FLOW) create_pool_flow.add(lifecycle_tasks.PoolToErrorOnRevertTask( requires=[constants.POOL, constants.LISTENERS, constants.LOADBALANCER])) create_pool_flow.add(database_tasks.MarkPoolPendingCreateInDB( requires=constants.POOL)) create_pool_flow.add(amphora_driver_tasks.ListenersUpdate( requires=[constants.LOADBALANCER, constants.LISTENERS])) create_pool_flow.add(database_tasks.MarkPoolActiveInDB( requires=constants.POOL)) create_pool_flow.add(database_tasks.MarkLBAndListenersActiveInDB( requires=[constants.LOADBALANCER, constants.LISTENERS])) return create_pool_flow
[docs] def get_delete_pool_flow(self): """Create a flow to delete a pool :returns: The flow for deleting a pool """ delete_pool_flow = linear_flow.Flow(constants.DELETE_POOL_FLOW) delete_pool_flow.add(lifecycle_tasks.PoolToErrorOnRevertTask( requires=[constants.POOL, constants.LISTENERS, constants.LOADBALANCER])) delete_pool_flow.add(database_tasks.MarkPoolPendingDeleteInDB( requires=constants.POOL)) delete_pool_flow.add(database_tasks.CountPoolChildrenForQuota( requires=constants.POOL, provides=constants.POOL_CHILD_COUNT)) delete_pool_flow.add(model_tasks.DeleteModelObject( rebind={constants.OBJECT: constants.POOL})) delete_pool_flow.add(amphora_driver_tasks.ListenersUpdate( requires=[constants.LOADBALANCER, constants.LISTENERS])) delete_pool_flow.add(database_tasks.DeletePoolInDB( requires=constants.POOL)) delete_pool_flow.add(database_tasks.DecrementPoolQuota( requires=[constants.POOL, constants.POOL_CHILD_COUNT])) delete_pool_flow.add(database_tasks.MarkLBAndListenersActiveInDB( requires=[constants.LOADBALANCER, constants.LISTENERS])) return delete_pool_flow
[docs] def get_delete_pool_flow_internal(self, name): """Create a flow to delete a pool, etc. :returns: The flow for deleting a pool """ delete_pool_flow = linear_flow.Flow(constants.DELETE_POOL_FLOW) # health monitor should cascade # members should cascade delete_pool_flow.add(database_tasks.MarkPoolPendingDeleteInDB( name='mark_pool_pending_delete_in_db_' + name, requires=constants.POOL, rebind={constants.POOL: name})) delete_pool_flow.add(database_tasks.CountPoolChildrenForQuota( name='count_pool_children_for_quota_' + name, requires=constants.POOL, provides=constants.POOL_CHILD_COUNT, rebind={constants.POOL: name})) delete_pool_flow.add(model_tasks.DeleteModelObject( name='delete_model_object_' + name, rebind={constants.OBJECT: name})) delete_pool_flow.add(database_tasks.DeletePoolInDB( name='delete_pool_in_db_' + name, requires=constants.POOL, rebind={constants.POOL: name})) delete_pool_flow.add(database_tasks.DecrementPoolQuota( name='decrement_pool_quota_' + name, requires=[constants.POOL, constants.POOL_CHILD_COUNT], rebind={constants.POOL: name})) return delete_pool_flow
[docs] def get_update_pool_flow(self): """Create a flow to update a pool :returns: The flow for updating a pool """ update_pool_flow = linear_flow.Flow(constants.UPDATE_POOL_FLOW) update_pool_flow.add(lifecycle_tasks.PoolToErrorOnRevertTask( requires=[constants.POOL, constants.LISTENERS, constants.LOADBALANCER])) update_pool_flow.add(database_tasks.MarkPoolPendingUpdateInDB( requires=constants.POOL)) update_pool_flow.add(model_tasks. UpdateAttributes( rebind={constants.OBJECT: constants.POOL}, requires=[constants.UPDATE_DICT])) update_pool_flow.add(amphora_driver_tasks.ListenersUpdate( requires=[constants.LOADBALANCER, constants.LISTENERS])) update_pool_flow.add(database_tasks.UpdatePoolInDB( requires=[constants.POOL, constants.UPDATE_DICT])) update_pool_flow.add(database_tasks.MarkPoolActiveInDB( requires=constants.POOL)) update_pool_flow.add(database_tasks.MarkLBAndListenersActiveInDB( requires=[constants.LOADBALANCER, constants.LISTENERS])) return update_pool_flow
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