c73c097560
Provides and requires properties are used to browse all required and provided values for the whole Flow. The same properties were added to the Task. Appropriate Task properties were renamed to rebind and save_as. Change-Id: I02eb02303a9701a13f1a54f06f20bbf9aebd1d04
72 lines
2.0 KiB
Python
72 lines
2.0 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, return_tuple=True):
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super(ProvidesRequiresTask, self).__init__(name=name,
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provides=provides,
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requires=requires)
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self.return_tuple = isinstance(provides, (tuple, list))
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def execute(self, context, *args, **kwargs):
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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({
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'name': self.name,
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KWARGS_KEY: kwargs,
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ARGS_KEY: args,
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})
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if self.return_tuple:
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outs = []
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for i in xrange(0, len(self.provides)):
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outs.append(i)
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return tuple(outs)
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else:
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outs = {}
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for k in self.provides:
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outs[k] = k
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return outs
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class DummyTask(task.Task):
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def execute(self, context, *args, **kwargs):
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pass
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