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Diffstat (limited to 'lib/thrift/transport/TTwisted.py')
| -rw-r--r-- | lib/thrift/transport/TTwisted.py | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/lib/thrift/transport/TTwisted.py b/lib/thrift/transport/TTwisted.py new file mode 100644 index 000000000..b6dcb4e0b --- /dev/null +++ b/lib/thrift/transport/TTwisted.py @@ -0,0 +1,219 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# +from zope.interface import implements, Interface, Attribute +from twisted.internet.protocol import Protocol, ServerFactory, ClientFactory, \ + connectionDone +from twisted.internet import defer +from twisted.protocols import basic +from twisted.python import log +from twisted.web import server, resource, http + +from thrift.transport import TTransport +from cStringIO import StringIO + + +class TMessageSenderTransport(TTransport.TTransportBase): + + def __init__(self): + self.__wbuf = StringIO() + + def write(self, buf): + self.__wbuf.write(buf) + + def flush(self): + msg = self.__wbuf.getvalue() + self.__wbuf = StringIO() + self.sendMessage(msg) + + def sendMessage(self, message): + raise NotImplementedError + + +class TCallbackTransport(TMessageSenderTransport): + + def __init__(self, func): + TMessageSenderTransport.__init__(self) + self.func = func + + def sendMessage(self, message): + self.func(message) + + +class ThriftClientProtocol(basic.Int32StringReceiver): + + MAX_LENGTH = 2 ** 31 - 1 + + def __init__(self, client_class, iprot_factory, oprot_factory=None): + self._client_class = client_class + self._iprot_factory = iprot_factory + if oprot_factory is None: + self._oprot_factory = iprot_factory + else: + self._oprot_factory = oprot_factory + + self.recv_map = {} + self.started = defer.Deferred() + + def dispatch(self, msg): + self.sendString(msg) + + def connectionMade(self): + tmo = TCallbackTransport(self.dispatch) + self.client = self._client_class(tmo, self._oprot_factory) + self.started.callback(self.client) + + def connectionLost(self, reason=connectionDone): + for k,v in self.client._reqs.iteritems(): + tex = TTransport.TTransportException( + type=TTransport.TTransportException.END_OF_FILE, + message='Connection closed') + v.errback(tex) + + def stringReceived(self, frame): + tr = TTransport.TMemoryBuffer(frame) + iprot = self._iprot_factory.getProtocol(tr) + (fname, mtype, rseqid) = iprot.readMessageBegin() + + try: + method = self.recv_map[fname] + except KeyError: + method = getattr(self.client, 'recv_' + fname) + self.recv_map[fname] = method + + method(iprot, mtype, rseqid) + + +class ThriftServerProtocol(basic.Int32StringReceiver): + + MAX_LENGTH = 2 ** 31 - 1 + + def dispatch(self, msg): + self.sendString(msg) + + def processError(self, error): + self.transport.loseConnection() + + def processOk(self, _, tmo): + msg = tmo.getvalue() + + if len(msg) > 0: + self.dispatch(msg) + + def stringReceived(self, frame): + tmi = TTransport.TMemoryBuffer(frame) + tmo = TTransport.TMemoryBuffer() + + iprot = self.factory.iprot_factory.getProtocol(tmi) + oprot = self.factory.oprot_factory.getProtocol(tmo) + + d = self.factory.processor.process(iprot, oprot) + d.addCallbacks(self.processOk, self.processError, + callbackArgs=(tmo,)) + + +class IThriftServerFactory(Interface): + + processor = Attribute("Thrift processor") + + iprot_factory = Attribute("Input protocol factory") + + oprot_factory = Attribute("Output protocol factory") + + +class IThriftClientFactory(Interface): + + client_class = Attribute("Thrift client class") + + iprot_factory = Attribute("Input protocol factory") + + oprot_factory = Attribute("Output protocol factory") + + +class ThriftServerFactory(ServerFactory): + + implements(IThriftServerFactory) + + protocol = ThriftServerProtocol + + def __init__(self, processor, iprot_factory, oprot_factory=None): + self.processor = processor + self.iprot_factory = iprot_factory + if oprot_factory is None: + self.oprot_factory = iprot_factory + else: + self.oprot_factory = oprot_factory + + +class ThriftClientFactory(ClientFactory): + + implements(IThriftClientFactory) + + protocol = ThriftClientProtocol + + def __init__(self, client_class, iprot_factory, oprot_factory=None): + self.client_class = client_class + self.iprot_factory = iprot_factory + if oprot_factory is None: + self.oprot_factory = iprot_factory + else: + self.oprot_factory = oprot_factory + + def buildProtocol(self, addr): + p = self.protocol(self.client_class, self.iprot_factory, + self.oprot_factory) + p.factory = self + return p + + +class ThriftResource(resource.Resource): + + allowedMethods = ('POST',) + + def __init__(self, processor, inputProtocolFactory, + outputProtocolFactory=None): + resource.Resource.__init__(self) + self.inputProtocolFactory = inputProtocolFactory + if outputProtocolFactory is None: + self.outputProtocolFactory = inputProtocolFactory + else: + self.outputProtocolFactory = outputProtocolFactory + self.processor = processor + + def getChild(self, path, request): + return self + + def _cbProcess(self, _, request, tmo): + msg = tmo.getvalue() + request.setResponseCode(http.OK) + request.setHeader("content-type", "application/x-thrift") + request.write(msg) + request.finish() + + def render_POST(self, request): + request.content.seek(0, 0) + data = request.content.read() + tmi = TTransport.TMemoryBuffer(data) + tmo = TTransport.TMemoryBuffer() + + iprot = self.inputProtocolFactory.getProtocol(tmi) + oprot = self.outputProtocolFactory.getProtocol(tmo) + + d = self.processor.process(iprot, oprot) + d.addCallback(self._cbProcess, request, tmo) + return server.NOT_DONE_YET |