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utils.py

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# Licensed 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.

import logging

def enable_logging(debug=False, path=None, stream=None):

"""Enable logging to a file at path and/or a console stream.

This function is available for debugging purposes. If you wish to

log this package's message in your application, the standard library

``logging`` package will receive these messages in any handlers you

create.

:param bool debug: Set this to ``True`` to receive debug messages,

which includes HTTP requests and responses,

or ``False`` for warning messages.

:param str path: If a *path* is specified, logging output will

written to that file in addition to sys.stderr.

The path is passed to logging.FileHandler,

which will append messages the file (and create

it if needed).

:param stream: One of ``None `` or ``sys.stdout`` or ``sys.stderr``.

If it is ``None``, nothing is logged to a stream.

If it isn't ``None``, console output is logged

to this stream.

:rtype: None

"""

if path is None and stream is None:

raise ValueError("path and/or stream must be set")

logger = logging.getLogger('openstack')

ksalog = logging.getLogger('keystoneauth')

formatter = logging.Formatter(

'%(asctime)s %(levelname)s: %(name)s %(message)s')

if stream is not None:

console = logging.StreamHandler(stream)

console.setFormatter(formatter)

logger.addHandler(console)

ksalog.addHandler(console)

if path is not None:

file_handler = logging.FileHandler(path)

file_handler.setFormatter(formatter)

logger.addHandler(file_handler)

ksalog.addHandler(file_handler)

logger.setLevel(logging.DEBUG if debug else logging.WARNING)

ksalog.setLevel(logging.DEBUG if debug else logging.WARNING)

def urljoin(*args):

"""A custom version of urljoin that simply joins strings into a path.

The real urljoin takes into account web semantics like when joining a url

like /path this should be joined to http://host/path as it is an anchored

link. We generally won't care about that in client.

"""

return '/'.join(str(a or '').strip('/') for a in args)