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# Copyright 2016, 2017 IBM Corp.
#
# 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 taskflow import engines as tf_eng
from taskflow.listeners import timing as tf_tm
LOG = logging.getLogger(__name__)
def run(flow, instance=None):
"""Run a TaskFlow Flow with task timing and logging with instance.
:param flow: A taskflow.flow.Flow to run.
:param instance: A nova instance, for logging.
:return: The result of taskflow.engines.run(), a dictionary of named
results of the Flow's execution.
"""
def log_with_instance(*args, **kwargs):
"""Wrapper for LOG.info(*args, **kwargs, instance=instance)."""
if instance is not None:
kwargs['instance'] = instance
LOG.info(*args, **kwargs)
eng = tf_eng.load(flow)
with tf_tm.PrintingDurationListener(eng, printer=log_with_instance):
return eng.run()
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