oslo.log/oslo_log/helpers.py

48 lines
1.6 KiB
Python

# Copyright (C) 2013 eNovance SAS <licensing@enovance.com>
#
# 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.
"""Log helper functions."""
import functools
import logging
def _get_full_class_name(cls):
return '%s.%s' % (cls.__module__,
getattr(cls, '__qualname__', cls.__name__))
def log_method_call(method):
"""Decorator helping to log method calls.
The decorator is not intended to be used for static methods (which
are just simple functions from Python point of view).
:param method: Method to decorate to be logged.
:type method: method definition
"""
log = logging.getLogger(method.__module__)
@functools.wraps(method)
def wrapper(*args, **kwargs):
first_arg = args[0]
cls = first_arg if isinstance(first_arg, type) else first_arg.__class__
data = {'class_name': _get_full_class_name(cls),
'method_name': method.__name__,
'args': args[1:], 'kwargs': kwargs}
log.debug('%(class_name)s method %(method_name)s '
'called with arguments %(args)s %(kwargs)s', data)
return method(*args, **kwargs)
return wrapper