98 lines
3.0 KiB
Python
98 lines
3.0 KiB
Python
# Copyright 2015 - 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 mistral.db.v2 import api as db_api
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from mistral.engine import rpc
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from mistral import exceptions as exc
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from mistral.services import scheduler
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from mistral.utils import wf_trace
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from mistral.workbook import parser as spec_parser
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from mistral.workflow import data_flow
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from mistral.workflow import states
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from mistral.workflow import utils as wf_utils
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def succeed_workflow(wf_ex, final_context, state_info=None):
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set_execution_state(wf_ex, states.SUCCESS, state_info)
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wf_spec = spec_parser.get_workflow_spec(wf_ex.spec)
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wf_ex.output = data_flow.evaluate_workflow_output(wf_spec, final_context)
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if wf_ex.task_execution_id:
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_schedule_send_result_to_parent_workflow(wf_ex)
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return wf_ex
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def fail_workflow(wf_ex, state_info):
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if states.is_paused_or_completed(wf_ex.state):
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return wf_ex
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set_execution_state(wf_ex, states.ERROR, state_info)
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if wf_ex.task_execution_id:
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_schedule_send_result_to_parent_workflow(wf_ex)
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return wf_ex
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def _schedule_send_result_to_parent_workflow(wf_ex):
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scheduler.schedule_call(
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None,
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'mistral.engine.workflow_handler.send_result_to_parent_workflow',
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0,
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wf_ex_id=wf_ex.id
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)
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def send_result_to_parent_workflow(wf_ex_id):
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wf_ex = db_api.get_workflow_execution(wf_ex_id)
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if wf_ex.state == states.SUCCESS:
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rpc.get_engine_client().on_action_complete(
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wf_ex.id,
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wf_utils.Result(data=wf_ex.output)
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)
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elif wf_ex.state == states.ERROR:
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err_msg = 'Failed subworkflow [execution_id=%s]' % wf_ex.id
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rpc.get_engine_client().on_action_complete(
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wf_ex.id,
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wf_utils.Result(error=err_msg)
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)
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def set_execution_state(wf_ex, state, state_info=None):
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cur_state = wf_ex.state
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if states.is_valid_transition(cur_state, state):
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wf_ex.state = state
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wf_ex.state_info = state_info
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wf_trace.info(
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wf_ex,
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"Execution of workflow '%s' [%s -> %s]"
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% (wf_ex.workflow_name, cur_state, state)
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)
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else:
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msg = ("Can't change workflow execution state from %s to %s. "
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"[workflow=%s, execution_id=%s]" %
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(cur_state, state, wf_ex.name, wf_ex.id))
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raise exc.WorkflowException(msg)
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# Workflow result should be accepted by parent workflows (if any)
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# only if it completed successfully.
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wf_ex.accepted = wf_ex.state == states.SUCCESS
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