71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
# Copyright 2015 Mirantis, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with this program; if not, write to the Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
from contextlib import closing
|
|
import gzip
|
|
import mock
|
|
import six
|
|
|
|
|
|
class CallbacksAdapter(mock.MagicMock):
|
|
"""Helper to return data through callback."""
|
|
|
|
def __call__(self, *args, **kwargs):
|
|
if len(args) > 0:
|
|
callback = args[-1]
|
|
else:
|
|
callback = None
|
|
|
|
if not callable(callback):
|
|
return super(CallbacksAdapter, self).__call__(*args, **kwargs)
|
|
|
|
args = args[:-1]
|
|
data = super(CallbacksAdapter, self).__call__(*args, **kwargs)
|
|
|
|
if isinstance(data, list):
|
|
for d in data:
|
|
callback(d)
|
|
else:
|
|
callback(data)
|
|
|
|
|
|
class Buffer(object):
|
|
"""Helper to hide BytesIO methods."""
|
|
|
|
def __init__(self, io):
|
|
self.io = io
|
|
self.reset()
|
|
|
|
def reset(self):
|
|
self.io.seek(0)
|
|
|
|
def read(self, s=-1):
|
|
return self.io.read(s)
|
|
|
|
|
|
def get_compressed(stream):
|
|
"""Gets compressed stream."""
|
|
compressed = six.BytesIO()
|
|
with closing(gzip.GzipFile(fileobj=compressed, mode="wb")) as gz:
|
|
gz.write(stream.read())
|
|
return Buffer(compressed)
|
|
|
|
|
|
def read_to_buffer(stream):
|
|
return six.BytesIO(stream.read())
|