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53 lines
1.1 KiB
Python
53 lines
1.1 KiB
Python
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# -*- test-case-name: twisted.protocols.haproxy.test -*-
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# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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HAProxy specific exceptions.
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"""
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import contextlib
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import sys
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from twisted.python import compat
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class InvalidProxyHeader(Exception):
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"""
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The provided PROXY protocol header is invalid.
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"""
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class InvalidNetworkProtocol(InvalidProxyHeader):
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"""
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The network protocol was not one of TCP4 TCP6 or UNKNOWN.
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"""
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class MissingAddressData(InvalidProxyHeader):
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"""
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The address data is missing or incomplete.
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"""
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@contextlib.contextmanager
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def convertError(sourceType, targetType):
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"""
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Convert an error into a different error type.
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@param sourceType: The type of exception that should be caught and
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converted.
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@type sourceType: L{Exception}
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@param targetType: The type of exception to which the original should be
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converted.
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@type targetType: L{Exception}
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"""
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try:
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yield None
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except sourceType:
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compat.reraise(targetType(), sys.exc_info()[-1])
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