122 lines
5.2 KiB
Python
122 lines
5.2 KiB
Python
# Copyright 2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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from taskflow.patterns import linear_flow
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from octavia.common import constants
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from octavia.controller.worker.v2.tasks import amphora_driver_tasks
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from octavia.controller.worker.v2.tasks import database_tasks
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from octavia.controller.worker.v2.tasks import lifecycle_tasks
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class PoolFlows(object):
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def get_create_pool_flow(self):
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"""Create a flow to create a pool
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:returns: The flow for creating a pool
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"""
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create_pool_flow = linear_flow.Flow(constants.CREATE_POOL_FLOW)
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create_pool_flow.add(lifecycle_tasks.PoolToErrorOnRevertTask(
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requires=[constants.POOL_ID,
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constants.LISTENERS,
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constants.LOADBALANCER]))
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create_pool_flow.add(database_tasks.MarkPoolPendingCreateInDB(
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requires=constants.POOL_ID))
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create_pool_flow.add(amphora_driver_tasks.ListenersUpdate(
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requires=constants.LOADBALANCER_ID))
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create_pool_flow.add(database_tasks.MarkPoolActiveInDB(
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requires=constants.POOL_ID))
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create_pool_flow.add(database_tasks.MarkLBAndListenersActiveInDB(
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requires=(constants.LOADBALANCER_ID, constants.LISTENERS)))
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return create_pool_flow
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def get_delete_pool_flow(self):
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"""Create a flow to delete a pool
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:returns: The flow for deleting a pool
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"""
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delete_pool_flow = linear_flow.Flow(constants.DELETE_POOL_FLOW)
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delete_pool_flow.add(lifecycle_tasks.PoolToErrorOnRevertTask(
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requires=[constants.POOL_ID,
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constants.LISTENERS,
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constants.LOADBALANCER]))
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delete_pool_flow.add(database_tasks.MarkPoolPendingDeleteInDB(
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requires=constants.POOL_ID))
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delete_pool_flow.add(database_tasks.CountPoolChildrenForQuota(
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requires=constants.POOL_ID, provides=constants.POOL_CHILD_COUNT))
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delete_pool_flow.add(amphora_driver_tasks.ListenersUpdate(
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requires=constants.LOADBALANCER_ID))
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delete_pool_flow.add(database_tasks.DeletePoolInDB(
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requires=constants.POOL_ID))
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delete_pool_flow.add(database_tasks.DecrementPoolQuota(
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requires=[constants.PROJECT_ID, constants.POOL_CHILD_COUNT]))
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delete_pool_flow.add(database_tasks.MarkLBAndListenersActiveInDB(
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requires=(constants.LOADBALANCER_ID, constants.LISTENERS)))
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return delete_pool_flow
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def get_delete_pool_flow_internal(self, pool_id):
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"""Create a flow to delete a pool, etc.
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:returns: The flow for deleting a pool
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"""
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delete_pool_flow = linear_flow.Flow(constants.DELETE_POOL_FLOW + '-' +
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pool_id)
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# health monitor should cascade
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# members should cascade
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delete_pool_flow.add(database_tasks.MarkPoolPendingDeleteInDB(
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name='mark_pool_pending_delete_in_db_' + pool_id,
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requires=constants.POOL_ID,
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inject={constants.POOL_ID: pool_id}))
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delete_pool_flow.add(database_tasks.CountPoolChildrenForQuota(
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name='count_pool_children_for_quota_' + pool_id,
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requires=constants.POOL_ID,
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provides=constants.POOL_CHILD_COUNT,
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inject={constants.POOL_ID: pool_id}))
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delete_pool_flow.add(database_tasks.DeletePoolInDB(
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name='delete_pool_in_db_' + pool_id,
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requires=constants.POOL_ID,
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inject={constants.POOL_ID: pool_id}))
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delete_pool_flow.add(database_tasks.DecrementPoolQuota(
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name='decrement_pool_quota_' + pool_id,
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requires=[constants.PROJECT_ID, constants.POOL_CHILD_COUNT]))
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return delete_pool_flow
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def get_update_pool_flow(self):
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"""Create a flow to update a pool
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:returns: The flow for updating a pool
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"""
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update_pool_flow = linear_flow.Flow(constants.UPDATE_POOL_FLOW)
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update_pool_flow.add(lifecycle_tasks.PoolToErrorOnRevertTask(
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requires=[constants.POOL_ID,
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constants.LISTENERS,
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constants.LOADBALANCER]))
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update_pool_flow.add(database_tasks.MarkPoolPendingUpdateInDB(
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requires=constants.POOL_ID))
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update_pool_flow.add(amphora_driver_tasks.ListenersUpdate(
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requires=constants.LOADBALANCER_ID))
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update_pool_flow.add(database_tasks.UpdatePoolInDB(
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requires=[constants.POOL_ID, constants.UPDATE_DICT]))
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update_pool_flow.add(database_tasks.MarkPoolActiveInDB(
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requires=constants.POOL_ID))
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update_pool_flow.add(database_tasks.MarkLBAndListenersActiveInDB(
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requires=(constants.LOADBALANCER_ID, constants.LISTENERS)))
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return update_pool_flow
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