OpenStack library for messaging
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# Copyright 2013 Red Hat, Inc.
# 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
# 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.
__all__ = ['MessagingException', 'MessagingTimeout', 'MessageDeliveryFailure',
import six
class MessagingException(Exception):
"""Base class for exceptions."""
class MessagingTimeout(MessagingException):
"""Raised if message sending times out."""
class MessageDeliveryFailure(MessagingException):
"""Raised if message sending failed after the asked retry."""
class InvalidTarget(MessagingException, ValueError):
"""Raised if a target does not meet certain pre-conditions."""
def __init__(self, msg, target):
msg = msg + ":" + six.text_type(target)
super(InvalidTarget, self).__init__(msg) = target