105 lines
4.1 KiB
C++
Executable File
105 lines
4.1 KiB
C++
Executable File
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// A server to receive EchoRequest and send back EchoResponse.
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#include <gflags/gflags.h>
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#include <butil/logging.h>
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#include <brpc/server.h>
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#include <brpc/thrift_message.h>
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#include <brpc/channel.h>
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#include <brpc/thrift_service.h>
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#include "gen-cpp/echo_types.h"
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DEFINE_int32(port, 8019, "TCP Port of this server");
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DEFINE_int32(idle_timeout_s, -1, "Connection will be closed if there is no "
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"read/write operations during the last `idle_timeout_s'");
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DEFINE_int32(max_concurrency, 0, "Limit of request processing in parallel");
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// Adapt your own thrift-based protocol to use brpc
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class EchoServiceImpl : public brpc::ThriftService {
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public:
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EchoServiceImpl() {
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// Initialize the channel, NULL means using default options.
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brpc::ChannelOptions options;
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options.protocol = brpc::PROTOCOL_THRIFT;
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if (_channel.Init("0.0.0.0", FLAGS_port , &options) != 0) {
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LOG(ERROR) << "Fail to initialize channel";
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}
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}
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void ProcessThriftFramedRequest(brpc::Controller* cntl,
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brpc::ThriftFramedMessage* req,
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brpc::ThriftFramedMessage* res,
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google::protobuf::Closure* done) override {
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// Dispatch calls to different methods
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if (cntl->thrift_method_name() == "Echo") {
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// Proxy request/response to RealEcho, note that as a proxy we
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// don't need to Cast the messages to native types.
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brpc::Controller cntl;
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brpc::ThriftStub stub(&_channel);
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// TODO: Following Cast<> drops data field from ProxyRequest which
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// does not recognize the field, should be debugged further.
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// LOG(INFO) << "req=" << *req->Cast<example::ProxyRequest>();
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stub.CallMethod("RealEcho", &cntl, req, res, NULL);
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done->Run();
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} else if (cntl->thrift_method_name() == "RealEcho") {
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return RealEcho(cntl, req->Cast<example::EchoRequest>(),
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res->Cast<example::EchoResponse>(), done);
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} else {
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cntl->SetFailed(brpc::ENOMETHOD, "Fail to find method=%s",
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cntl->thrift_method_name().c_str());
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done->Run();
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}
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}
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void RealEcho(brpc::Controller* cntl,
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const example::EchoRequest* req,
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example::EchoResponse* res,
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google::protobuf::Closure* done) {
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// This object helps you to call done->Run() in RAII style. If you need
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// to process the request asynchronously, pass done_guard.release().
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brpc::ClosureGuard done_guard(done);
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res->data = req->data + " (RealEcho)";
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}
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private:
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brpc::Channel _channel;
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};
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int main(int argc, char* argv[]) {
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// Parse gflags. We recommend you to use gflags as well.
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google::ParseCommandLineFlags(&argc, &argv, true);
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brpc::Server server;
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brpc::ServerOptions options;
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options.thrift_service = new EchoServiceImpl;
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options.idle_timeout_sec = FLAGS_idle_timeout_s;
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options.max_concurrency = FLAGS_max_concurrency;
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// Start the server.
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if (server.Start(FLAGS_port, &options) != 0) {
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LOG(ERROR) << "Fail to start EchoServer";
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return -1;
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}
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// Wait until Ctrl-C is pressed, then Stop() and Join() the server.
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server.RunUntilAskedToQuit();
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return 0;
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}
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