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
53 lines
1.8 KiB
Python
53 lines
1.8 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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from taskflow.utils import reflection
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class Endpoint(object):
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"""Represents a single task with execute/revert methods."""
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def __init__(self, task_cls):
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self._task_cls = task_cls
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self._task_cls_name = reflection.get_class_name(task_cls)
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self._executor = executor.SerialTaskExecutor()
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def __str__(self):
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return self._task_cls_name
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@property
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def name(self):
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return self._task_cls_name
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def _get_task(self, name=None):
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# NOTE(skudriashev): Note that task is created here with the 'name'
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# argument passed to its constructor. This will be a problem
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# when task's constructor requires some other arguments.
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return self._task_cls(name=name)
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def execute(self, task_name, **kwargs):
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task, event, result = self._executor.execute_task(
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self._get_task(task_name), **kwargs).result()
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return result
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def revert(self, task_name, **kwargs):
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task, event, result = self._executor.revert_task(
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self._get_task(task_name), **kwargs).result()
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return result
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