47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
# Copyright 2014-2015 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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import concurrent.futures
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from oslo_config import cfg
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from taskflow import engines as tf_engines
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CONF = cfg.CONF
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class BaseTaskFlowEngine(object):
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"""This is the task flow engine
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Use this engine to start/load flows in the
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code
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"""
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def __init__(self):
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self.executor = concurrent.futures.ThreadPoolExecutor(
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max_workers=CONF.task_flow.max_workers)
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def _taskflow_load(self, flow, **kwargs):
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eng = tf_engines.load(
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flow,
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engine=CONF.task_flow.engine,
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executor=self.executor,
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never_resolve=CONF.task_flow.disable_revert,
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**kwargs)
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eng.compile()
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eng.prepare()
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return eng
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