32e8c3da61
* Implemented Worker to be started on remote host for handling tasks request. * Implemented WorkerTaskExecutor that proxies tasks requests to remote workers. * Implemented Proxy that is used for consuming and publishing messages by Worker and Executor. * Added worker-based engine and worker task executor. * Added kombu dependency to requirements. * Added worker-based flow example. * Added unit-tests for worker-based flow components. Implements: blueprint worker-based-engine Change-Id: I8c6859ba4a1a56c2592e3d67cdfb8968b13ee99c
48 lines
1.6 KiB
Python
48 lines
1.6 KiB
Python
# -*- coding: utf-8 -*-
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
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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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from taskflow.engines.action_engine import executor
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# NOTE(skudriashev): This is protocol events, not related to the task states.
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PENDING = 'PENDING'
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RUNNING = 'RUNNING'
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SUCCESS = 'SUCCESS'
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FAILURE = 'FAILURE'
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PROGRESS = 'PROGRESS'
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# Remote task actions
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EXECUTE = 'execute'
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REVERT = 'revert'
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# Remote task action to event map
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ACTION_TO_EVENT = {
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EXECUTE: executor.EXECUTED,
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REVERT: executor.REVERTED
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}
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# NOTE(skudriashev): A timeout which specifies request expiration period.
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REQUEST_TIMEOUT = 60
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# NOTE(skudriashev): A timeout which controls for how long a queue can be
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# unused before it is automatically deleted. Unused means the queue has no
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# consumers, the queue has not been redeclared, the `queue.get` has not been
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# invoked for a duration of at least the expiration period. In our case this
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# period is equal to the request timeout, once request is expired - queue is
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# no longer needed.
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QUEUE_EXPIRE_TIMEOUT = REQUEST_TIMEOUT
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