65 lines
1.7 KiB
Python
65 lines
1.7 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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from contextlib import closing
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import gzip
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import mock
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import six
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class CallbacksAdapter(mock.MagicMock):
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"""Helper to return data through callback."""
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def __call__(self, *args, **kwargs):
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if len(args) > 0:
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callback = args[-1]
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else:
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callback = None
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if not callable(callback):
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return super(CallbacksAdapter, self).__call__(*args, **kwargs)
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args = args[:-1]
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data = super(CallbacksAdapter, self).__call__(*args, **kwargs)
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if isinstance(data, list):
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for d in data:
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callback(d)
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else:
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callback(data)
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class Buffer(object):
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"""Helper to hide BytesIO methods."""
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def __init__(self, io):
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self.io = io
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self.reset()
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def reset(self):
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self.io.seek(0)
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def read(self, s=-1):
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return self.io.read(s)
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def get_compressed(stream):
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"""Gets compressed stream."""
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compressed = six.BytesIO()
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with closing(gzip.GzipFile(fileobj=compressed, mode="wb")) as gz:
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gz.write(stream.read())
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return Buffer(compressed)
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