71 lines
2 KiB
Python
71 lines
2 KiB
Python
# -*- test-case-name: twisted.protocols.haproxy.test.test_parser -*-
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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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Parser for 'haproxy:' string endpoint.
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"""
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from zope.interface import implementer
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from twisted.plugin import IPlugin
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from twisted.internet.endpoints import (
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quoteStringArgument, serverFromString, IStreamServerEndpointStringParser
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)
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from twisted.python.compat import iteritems
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from . import proxyEndpoint
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def unparseEndpoint(args, kwargs):
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"""
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Un-parse the already-parsed args and kwargs back into endpoint syntax.
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@param args: C{:}-separated arguments
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@type args: L{tuple} of native L{str}
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@param kwargs: C{:} and then C{=}-separated keyword arguments
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@type arguments: L{tuple} of native L{str}
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@return: a string equivalent to the original format which this was parsed
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as.
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@rtype: native L{str}
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"""
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description = ':'.join(
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[quoteStringArgument(str(arg)) for arg in args] +
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sorted(['%s=%s' % (quoteStringArgument(str(key)),
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quoteStringArgument(str(value)))
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for key, value in iteritems(kwargs)
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]))
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return description
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@implementer(IPlugin, IStreamServerEndpointStringParser)
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class HAProxyServerParser(object):
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"""
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Stream server endpoint string parser for the HAProxyServerEndpoint type.
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@ivar prefix: See L{IStreamServerEndpointStringParser.prefix}.
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"""
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prefix = "haproxy"
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def parseStreamServer(self, reactor, *args, **kwargs):
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"""
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Parse a stream server endpoint from a reactor and string-only arguments
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and keyword arguments.
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@param reactor: The reactor.
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@param args: The parsed string arguments.
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@param kwargs: The parsed keyword arguments.
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@return: a stream server endpoint
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@rtype: L{IStreamServerEndpoint}
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"""
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subdescription = unparseEndpoint(args, kwargs)
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wrappedEndpoint = serverFromString(reactor, subdescription)
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return proxyEndpoint(wrappedEndpoint)
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