66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
# Copyright 2017 - Brocade Communications Systems, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import abc
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from stevedore import driver
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_EXECUTORS = {}
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def cleanup():
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global _EXECUTORS
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_EXECUTORS = {}
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def get_executor(exec_type):
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global _EXECUTORS
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if not _EXECUTORS.get(exec_type):
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mgr = driver.DriverManager(
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'mistral.executors',
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exec_type,
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invoke_on_load=True
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)
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_EXECUTORS[exec_type] = mgr.driver
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return _EXECUTORS[exec_type]
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class Executor(object, metaclass=abc.ABCMeta):
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"""Action executor interface."""
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@abc.abstractmethod
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def run_action(self, action, action_ex_id, safe_rerun, exec_ctx,
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redelivered=False, target=None, async_=True, timeout=None):
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"""Runs the given action.
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:param action: Action to run.
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An instance of mistral_lib.actions.Action.
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:param action_ex_id: Corresponding action execution id.
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:param safe_rerun: Tells if given action can be safely rerun.
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:param exec_ctx: A dict of values providing information about
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the current execution.
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:param redelivered: Tells if given action was run before on another
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executor.
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:param target: Target (group of action executors).
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:param async_: If True, run action in asynchronous mode (w/o waiting
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for completion).
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:param timeout: a period of time in seconds after which execution of
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action will be interrupted
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:return: Action result.
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"""
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raise NotImplementedError()
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