91 lines
3.2 KiB
Python
91 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright 2013 - Mirantis, 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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from oslo_log import log as logging
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from mistral.actions import action_factory as a_f
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from mistral import coordination
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from mistral.engine import base
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from mistral import exceptions as exc
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from mistral.utils import inspect_utils as i_u
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from mistral.workflow import utils as wf_utils
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LOG = logging.getLogger(__name__)
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class DefaultExecutor(base.Executor, coordination.Service):
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def __init__(self, engine_client):
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self._engine_client = engine_client
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coordination.Service.__init__(self, 'executor_group')
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def run_action(self, action_ex_id, action_class_str, attributes,
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action_params):
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"""Runs action.
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:param action_ex_id: Corresponding task id.
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:param action_class_str: Path to action class in dot notation.
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:param attributes: Attributes of action class which will be set to.
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:param action_params: Action parameters.
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"""
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def send_error_back(error_msg):
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error_result = wf_utils.Result(error=error_msg)
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if action_ex_id:
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self._engine_client.on_action_complete(
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action_ex_id,
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error_result
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)
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else:
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return error_result
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action_cls = a_f.construct_action_class(action_class_str, attributes)
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try:
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action = action_cls(**action_params)
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result = action.run()
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# Note: it's made for backwards compatibility with already
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# existing Mistral actions which don't return result as
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# instance of workflow.utils.Result.
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if not isinstance(result, wf_utils.Result):
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result = wf_utils.Result(data=result)
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if action_ex_id and (action.is_sync() or result.is_error()):
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self._engine_client.on_action_complete(action_ex_id, result)
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return result
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except TypeError as e:
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msg = ("Failed to initialize action %s. Action init params = %s."
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" Actual init params = %s. More info: %s"
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% (action_class_str, i_u.get_arg_list(action_cls.__init__),
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action_params.keys(), e))
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LOG.warning(msg)
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except exc.ActionException as e:
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msg = ("Failed to run action [action_ex_id=%s, action_cls='%s',"
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" attributes='%s', params='%s']\n %s"
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% (action_ex_id, action_cls, attributes, action_params, e))
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LOG.exception(msg)
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except Exception as e:
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msg = str(e)
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# Send error info to engine.
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return send_error_back(msg)
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