| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """ |
| libcloud provides a unified interface to the cloud computing resources. |
| |
| :var __version__: Current version of libcloud |
| """ |
| |
| __all__ = ['__version__', 'enable_debug'] |
| __version__ = '1.0.0' |
| |
| import os |
| import codecs |
| |
| try: |
| import paramiko |
| have_paramiko = True |
| except ImportError: |
| have_paramiko = False |
| |
| |
| def enable_debug(fo): |
| """ |
| Enable library wide debugging to a file-like object. |
| |
| :param fo: Where to append debugging information |
| :type fo: File like object, only write operations are used. |
| """ |
| from libcloud.common.base import (Connection, |
| LoggingHTTPConnection, |
| LoggingHTTPSConnection) |
| LoggingHTTPSConnection.log = fo |
| LoggingHTTPConnection.log = fo |
| Connection.conn_classes = (LoggingHTTPConnection, |
| LoggingHTTPSConnection) |
| |
| |
| def _init_once(): |
| """ |
| Utility function that is ran once on Library import. |
| |
| This checks for the LIBCLOUD_DEBUG environment variable, which if it exists |
| is where we will log debug information about the provider transports. |
| """ |
| path = os.getenv('LIBCLOUD_DEBUG') |
| if path: |
| mode = 'a' |
| |
| # Special case for /dev/stderr and /dev/stdout on Python 3. |
| from libcloud.utils.py3 import PY3 |
| |
| # Opening those files in append mode will throw "illegal seek" |
| # exception there. |
| # Late import to avoid setup.py related side affects |
| if path in ['/dev/stderr', '/dev/stdout'] and PY3: |
| mode = 'w' |
| |
| fo = codecs.open(path, mode, encoding='utf8') |
| enable_debug(fo) |
| |
| if have_paramiko: |
| paramiko.common.logging.basicConfig(level=paramiko.common.DEBUG) |
| |
| _init_once() |