# Copyright 2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.## Licensed under the Apache License, Version 2.0 (the "License"). You# may not use this file except in compliance with the License. A copy of# the License is located at## ## or in the "license" file accompanying this file. This file 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 loggingfrom boto3.session import Session__author__ = 'Amazon Web Services'__version__ = '1.10.42'# The default Boto3 session; autoloaded when needed.DEFAULT_SESSION = None[docs]def setup_default_session(**kwargs): """ Set up a default session, passing through any parameters to the session constructor. There is no need to call this unless you wish to pass custom parameters, because a default session will be created for you. """ global DEFAULT_SESSION DEFAULT_SESSION = Session(**kwargs)[docs]def set_stream_logger(name='boto3', level=logging.DEBUG, format_string=None): """ Add a stream handler for the given name and level to the logging module. By default, this logs all boto3 messages to ``stdout``. >>> import boto3 >>> boto3.set_stream_logger('boto3.resources', logging.INFO) For debugging purposes a good choice is to set the stream logger to ``''`` which is equivalent to saying "log everything". .. WARNING:: Be aware that when logging anything from ``'botocore'`` the full wire trace will appear in your logs. If your payloads contain sensitive data this should not be used in production. :type name: string :param name: Log name :type level: int :param level: Logging level, e.g. ``logging.INFO`` :type format_string: str :param format_string: Log message format """ if format_string is None: format_string = "%(asctime)s%(name)s [%(levelname)s] %(message)s" logger = logging.getLogger(name) logger.setLevel(level) handler = logging.StreamHandler() handler.setLevel(level) formatter = logging.Formatter(format_string) handler.setFormatter(formatter) logger.addHandler(handler)def _get_default_session(): """ Get the default session, creating one if needed. :rtype: :py:class:`~boto3.session.Session` :return: The default session """ if DEFAULT_SESSION is None: setup_default_session() return DEFAULT_SESSION[docs]def client(*args, **kwargs): """ Create a low-level service client by name using the default session. See :py:meth:`boto3.session.Session.client`. """ return _get_default_session().client(*args, **kwargs)[docs]def resource(*args, **kwargs): """ Create a resource service client by name using the default session. See :py:meth:`boto3.session.Session.resource`. """ return _get_default_session().resource(*args, **kwargs)# Set up logging to ``/dev/null`` like a library is supposed to.# [docs]class NullHandler(logging.Handler):[docs] def emit(self, record): passlogging.getLogger('boto3').addHandler(NullHandler()) 
