# ==============================================================================
# Copyright 2011 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.
# 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.
# ==============================================================================
"""
Exception hierarchy matching the subset of requests.exceptions that
cfn-bootstrap catches. Names are preserved so that the ``except`` clauses in
cfnbootstrap/util.py (retry_on_failure) and the tests resolve unchanged.
"""


class RequestException(IOError):
    """Base for all wrapper HTTP errors (mirrors requests.exceptions.RequestException)."""

    def __init__(self, *args, **kwargs):
        self.response = kwargs.pop('response', None)
        self.request = kwargs.pop('request', None)
        super(RequestException, self).__init__(*args)


class HTTPError(RequestException):
    """An HTTP error occurred (4xx/5xx). Carries .response like requests does."""


class ConnectionError(RequestException):
    """A connection-level error occurred."""


class Timeout(RequestException):
    """The request timed out."""


class SSLError(ConnectionError):
    """A TLS/SSL error occurred (subclass of ConnectionError, as in requests)."""