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// 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.
// A server to receive EchoRequest and send back EchoResponse.
#include <gflags/gflags.h>
#include <butil/logging.h>
#include <brpc/server.h>
#include "echo.pb.h"
DEFINE_bool(echo_attachment, true, "Echo attachment as well");
DEFINE_int32(port, 8002, "TCP Port of this server");
DEFINE_int32(idle_timeout_s, -1, "Connection will be closed if there is no "
"read/write operations during the last `idle_timeout_s'");
DEFINE_int32(logoff_ms, 2000, "Maximum duration of server's LOGOFF state "
"(waiting for client to close connection before server stops)");
DEFINE_int32(max_concurrency, 0, "Limit of request processing in parallel");
DEFINE_int32(internal_port, -1, "Only allow builtin services at this port");
namespace example {
// Your implementation of EchoService
class EchoServiceImpl : public EchoService {
public:
EchoServiceImpl() {}
~EchoServiceImpl() {};
void Echo(google::protobuf::RpcController* cntl_base,
const EchoRequest* request,
EchoResponse* response,
google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl =
static_cast<brpc::Controller*>(cntl_base);
// Echo request and its attachment
response->set_message(request->message());
if (FLAGS_echo_attachment) {
cntl->response_attachment().append(cntl->request_attachment());
}
}
};
} // namespace example
DEFINE_bool(h, false, "print help information");
int main(int argc, char* argv[]) {
std::string help_str = "dummy help infomation";
GFLAGS_NS::SetUsageMessage(help_str);
// Parse gflags. We recommend you to use gflags as well.
GFLAGS_NS::ParseCommandLineFlags(&argc, &argv, true);
if (FLAGS_h) {
fprintf(stderr, "%s\n%s\n%s", help_str.c_str(), help_str.c_str(), help_str.c_str());
return 0;
}
// Generally you only need one Server.
brpc::Server server;
// Instance of your service.
example::EchoServiceImpl echo_service_impl;
// Add the service into server. Notice the second parameter, because the
// service is put on stack, we don't want server to delete it, otherwise
// use brpc::SERVER_OWNS_SERVICE.
if (server.AddService(&echo_service_impl,
brpc::SERVER_DOESNT_OWN_SERVICE) != 0) {
LOG(ERROR) << "Fail to add service";
return -1;
}
// Start the server.
brpc::ServerOptions options;
options.mutable_ssl_options()->default_cert.certificate = "cert.pem";
options.mutable_ssl_options()->default_cert.private_key = "key.pem";
options.idle_timeout_sec = FLAGS_idle_timeout_s;
options.max_concurrency = FLAGS_max_concurrency;
options.internal_port = FLAGS_internal_port;
if (server.Start(FLAGS_port, &options) != 0) {
LOG(ERROR) << "Fail to start EchoServer";
return -1;
}
// Wait until Ctrl-C is pressed, then Stop() and Join() the server.
server.RunUntilAskedToQuit();
return 0;
}