gejun
84 lines
3.0 KiB
C++
84 lines
3.0 KiB
C++
// Copyright (c) 2014 Baidu, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations 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 <butil/string_printf.h>
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#include <brpc/server.h>
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#include "echo.pb.h"
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DEFINE_bool(echo_attachment, true, "Echo attachment as well");
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DEFINE_int32(port, 8002, "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(logoff_ms, 2000, "Maximum duration of server's LOGOFF state "
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"(waiting for client to close connection before server stops)");
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DEFINE_int32(max_concurrency, 0, "Limit of request processing in parallel");
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// Your implementation of example::EchoService
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class EchoServiceImpl : public example::EchoService {
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public:
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EchoServiceImpl() {}
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~EchoServiceImpl() {};
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void Echo(google::protobuf::RpcController* cntl_base,
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const example::EchoRequest* request,
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example::EchoResponse* response,
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google::protobuf::Closure* done) {
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brpc::ClosureGuard done_guard(done);
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brpc::Controller* cntl =
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static_cast<brpc::Controller*>(cntl_base);
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// Echo request and its attachment
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response->set_value(request->value());
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if (FLAGS_echo_attachment) {
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cntl->response_attachment().append(cntl->request_attachment());
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}
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}
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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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GFLAGS_NS::ParseCommandLineFlags(&argc, &argv, true);
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// Generally you only need one Server.
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brpc::Server server;
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// Instance of your service.
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EchoServiceImpl echo_service_impl;
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// Add the service into server. Notice the second parameter, because the
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// service is put on stack, we don't want server to delete it, otherwise
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// use brpc::SERVER_OWNS_SERVICE.
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if (server.AddService(&echo_service_impl,
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brpc::SERVER_DOESNT_OWN_SERVICE) != 0) {
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LOG(ERROR) << "Fail to add service";
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return -1;
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}
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// Start the server.
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brpc::ServerOptions options;
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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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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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