98baedda27
We'd like library interface to be nice and simple, which implies that it does not involve too many underscores. Also 'execute' matches with 'revert' nicely. Suggested-by: Anastasia Karpinska <akarpinska@griddynamics.com> Change-Id: Iea72e6230a32665b4236a1e7d1dcc41bd56d0418
67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
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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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from taskflow import task
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ARGS_KEY = '__args__'
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KWARGS_KEY = '__kwargs__'
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ORDER_KEY = '__order__'
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def close_all(*args):
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for a in args:
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if not a:
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continue
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a.close()
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def null_functor(*args, **kwargs): # pylint: disable=W0613
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return None
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def drain(lst):
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while len(lst):
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lst.pop()
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class ProvidesRequiresTask(task.Task):
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def __init__(self, name, provides, requires):
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super(ProvidesRequiresTask, self).__init__(name)
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self.provides.update(provides)
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self.requires.update(requires)
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def execute(self, context, *args, **kwargs):
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outs = {
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KWARGS_KEY: dict(kwargs),
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ARGS_KEY: list(args),
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}
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if ORDER_KEY not in context:
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context[ORDER_KEY] = []
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context[ORDER_KEY].append(self.name)
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for v in self.provides:
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outs[v] = True
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return outs
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class DummyTask(task.Task):
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def __init__(self, name, task_id=None):
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super(DummyTask, self).__init__(name, task_id)
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def execute(self, context, *args, **kwargs):
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pass
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