deb-mistral/mistral/engine/action_handler.py
Renat Akhmerov 698248363c Using count() instead of all() for getting incompleted tasks
* Workflow completion check logic used heavy select query which
  actually returned objects whereas all we need is to count them.
  This patch adds get_incompleted_task_executions_count() methods
  on DB API to address this.

Change-Id: I796ba175210f41ded7877f310efeb30bd5045531
2016-09-13 12:44:25 +03:00

97 lines
2.8 KiB
Python

# Copyright 2015 - Mirantis, Inc.
# Copyright 2016 - Brocade Communications Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from oslo_log import log as logging
from osprofiler import profiler
import traceback as tb
from mistral.db.v2.sqlalchemy import models
from mistral.engine import actions
from mistral.engine import task_handler
from mistral import exceptions as exc
from mistral.workbook import parser as spec_parser
LOG = logging.getLogger(__name__)
@profiler.trace('action-handler-on-action-complete')
def on_action_complete(action_ex, result):
task_ex = action_ex.task_execution
action = _build_action(action_ex)
try:
action.complete(result)
except exc.MistralException as e:
msg = ("Failed to complete action [action=%s, task=%s]: %s\n%s" %
(action_ex.name, task_ex.name, e, tb.format_exc()))
LOG.error(msg)
action.fail(msg)
if task_ex:
task_handler.fail_task(task_ex, msg)
return
if task_ex:
task_handler.schedule_on_action_complete(action_ex)
@profiler.trace('action-handler-build-action')
def _build_action(action_ex):
if isinstance(action_ex, models.WorkflowExecution):
return actions.WorkflowAction(None, action_ex=action_ex)
wf_name = None
wf_spec_name = None
if action_ex.workflow_name:
wf_name = action_ex.workflow_name
wf_spec = spec_parser.get_workflow_spec_by_execution_id(
action_ex.task_execution.workflow_execution_id
)
wf_spec_name = wf_spec.get_name()
adhoc_action_name = action_ex.runtime_context.get('adhoc_action_name')
if adhoc_action_name:
action_def = actions.resolve_action_definition(
adhoc_action_name,
wf_name,
wf_spec_name
)
return actions.AdHocAction(action_def, action_ex=action_ex)
action_def = actions.resolve_action_definition(
action_ex.name,
wf_name,
wf_spec_name
)
return actions.PythonAction(action_def, action_ex=action_ex)
def build_action_by_name(action_name):
action_def = actions.resolve_action_definition(action_name)
action_cls = (actions.PythonAction if not action_def.spec
else actions.AdHocAction)
return action_cls(action_def)