Remove third_party/twisted_8_1

third_party/twisted_8_1/twisted/names/resolve.py

-# Copyright (c) 2001-2004 Twisted Matrix Laboratories.
-# See LICENSE for details.
-
-
-"""
-Lookup a name using multiple resolvers.
-
-Future Plans: This needs someway to specify which resolver answered
-the query, or someway to specify (authority|ttl|cache behavior|more?)
-
-@author: U{Jp Calderone<mailto:exarkun@twistedmatrix.com>}
-"""
-
-from twisted.internet import defer, interfaces
-from twisted.names import dns
-from zope.interface import implements
-import common
-
-class FailureHandler:
-    def __init__(self, resolver, query, timeout):
-        self.resolver = resolver
-        self.query = query
-        self.timeout = timeout
-
-
-    def __call__(self, failure):
-        # AuthoritativeDomainErrors should halt resolution attempts
-        failure.trap(dns.DomainError, defer.TimeoutError, NotImplementedError)
-        return self.resolver(self.query, self.timeout)
-
-
-class ResolverChain(common.ResolverBase):
-    """Lookup an address using multiple C{IResolver}s"""
-
-    implements(interfaces.IResolver)
-
-
-    def __init__(self, resolvers):
-        common.ResolverBase.__init__(self)
-        self.resolvers = resolvers
-
-
-    def _lookup(self, name, cls, type, timeout):
-        q = dns.Query(name, type, cls)
-        d = self.resolvers[0].query(q, timeout)
-        for r in self.resolvers[1:]:
-            d = d.addErrback(
-                FailureHandler(r.query, q, timeout)
-            )
-        return d
-
-
-    def lookupAllRecords(self, name, timeout = None):
-        d = self.resolvers[0].lookupAllRecords(name, timeout)
-        for r in self.resolvers[1:]:
-            d = d.addErrback(
-                FailureHandler(r.lookupAllRecords, name, timeout)
-            )
-        return d