55 lines
2.1 KiB
Python
55 lines
2.1 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# uwsgidecorators imports uwsgi which is a 'magical' module, available
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# in a Python script only when you run it via uwsgi. So when we run tests,
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# we do not do it via uwsgi and this code raises ImportError and later the
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# task is called synchronously -- so it should work exactly as before.
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from nailgun.logger import logger
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try:
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import uwsgidecorators
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except ImportError:
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uwsgidecorators = None
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def call_task_manager_async(klass, func, cluster_id, *args, **kwargs):
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"""This function calls a TaskManager's subclass 'klass' asynchronously.
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It instantiates a TaskManager instance with given cluster_id.
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This is because this call is made in a uWSGI mule -- we want to avoid
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passing any objects (like Cluster), just simple Python objects.
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:param klass: TaskManager's subclass
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:param func: name of function to be called
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:param cluster_id:
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:param args: Arguments to pass to the function
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:return:
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"""
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if uwsgidecorators:
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logger.debug('MULE STARTING for %s.%s', klass.__name__, func)
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instance = klass(cluster_id=cluster_id)
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getattr(instance, func)(*args, **kwargs)
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if uwsgidecorators:
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logger.debug('MULE FINISHED for %s.%s', klass.__name__, func)
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if uwsgidecorators:
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call_task_manager_async = uwsgidecorators.mulefunc(call_task_manager_async)
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else:
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logger.warning("'uwsgidecorators' python package is not installed, "
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"mule tasks will be executed in synchronous mode.")
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