THRIFT-812. contrib: Add a demo of using Thrift over ZeroMQ
git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@991260 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/contrib/zeromq/TZmqServer.cpp b/contrib/zeromq/TZmqServer.cpp
new file mode 100644
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+++ b/contrib/zeromq/TZmqServer.cpp
@@ -0,0 +1,96 @@
+/*
+ * 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.
+ */
+
+#include "TZmqServer.h"
+#include <transport/TBufferTransports.h>
+#include <boost/scoped_ptr.hpp>
+
+using boost::shared_ptr;
+using apache::thrift::transport::TMemoryBuffer;
+using apache::thrift::protocol::TProtocol;
+
+namespace apache { namespace thrift { namespace server {
+
+
+bool TZmqServer::serveOne(int recv_flags) {
+ zmq::message_t msg;
+ bool received = sock_.recv(&msg, recv_flags);
+ if (!received) {
+ return false;
+ }
+ shared_ptr<TMemoryBuffer> inputTransport(new TMemoryBuffer((uint8_t*)msg.data(), msg.size()));
+ shared_ptr<TMemoryBuffer> outputTransport(new TMemoryBuffer());
+ shared_ptr<TProtocol> inputProtocol(
+ inputProtocolFactory_->getProtocol(inputTransport));
+ shared_ptr<TProtocol> outputProtocol(
+ outputProtocolFactory_->getProtocol(outputTransport));
+
+ processor_->process(inputProtocol, outputProtocol);
+
+ if (zmq_type_ == ZMQ_REP) {
+ uint8_t* buf;
+ uint32_t size;
+ outputTransport->getBuffer(&buf, &size);
+ msg.rebuild(size);
+ std::memcpy(msg.data(), buf, size);
+ (void)sock_.send(msg);
+ }
+
+ return true;
+}
+
+
+void TZmqMultiServer::serveOne(long timeout) {
+ boost::scoped_ptr<zmq::pollitem_t> items(setupPoll());
+ serveActive(items.get(), timeout);
+}
+
+
+void TZmqMultiServer::serveForever() {
+ boost::scoped_ptr<zmq::pollitem_t> items(setupPoll());
+ while (true) {
+ serveActive(items.get(), -1);
+ }
+}
+
+
+zmq::pollitem_t* TZmqMultiServer::setupPoll() {
+ zmq::pollitem_t* items = new zmq::pollitem_t[servers_.size()];
+ for (int i = 0; i < servers_.size(); ++i) {
+ items[i].socket = servers_[i]->getSocket();
+ items[i].events = ZMQ_POLLIN;
+ }
+ return items;
+}
+
+void TZmqMultiServer::serveActive(zmq::pollitem_t* items, long timeout) {
+ int rc = zmq::poll(items, servers_.size(), timeout);
+ if (rc == 0) {
+ return;
+ }
+ for (int i = 0; i < servers_.size(); ++i) {
+ if ((items[i].revents & ZMQ_POLLIN) != 0) {
+ // Should we pass ZMQ_NOBLOCK here to be safe?
+ servers_[i]->serveOne();
+ }
+ }
+}
+
+
+}}} // apache::thrift::server