server.cpp 2.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
// 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.
gejun's avatar
gejun committed
17 18 19 20

// A server to receive EchoRequest and send back EchoResponse.

#include <gflags/gflags.h>
21
#include <butil/logging.h>
gejun's avatar
gejun committed
22 23 24 25 26 27 28 29
#include <brpc/server.h>
#include <brpc/nshead_service.h>

DEFINE_int32(port, 8010, "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(max_concurrency, 0, "Limit of request processing in parallel");

gejun's avatar
gejun committed
30
// Adapt your own nshead-based protocol to use brpc 
gejun's avatar
gejun committed
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
class MyNsheadProtocol : public brpc::NsheadService {
public:
    void ProcessNsheadRequest(const brpc::Server&,
                              brpc::Controller* cntl,
                              const brpc::NsheadMessage& request,
                              brpc::NsheadMessage* response, 
                              brpc::NsheadClosure* done) {
        // This object helps you to call done->Run() in RAII style. If you need
        // to process the request asynchronously, pass done_guard.release().
        brpc::ClosureGuard done_guard(done);

        if (cntl->Failed()) {
            // NOTE: You can send back a response containing error information
            // back to client instead of closing the connection.
            cntl->CloseConnection("Close connection due to previous error");
            return;
        }
        *response = request; // Just echo the request to client
    }
};

int main(int argc, char* argv[]) {
    // Parse gflags. We recommend you to use gflags as well.
54
    GFLAGS_NS::ParseCommandLineFlags(&argc, &argv, true);
gejun's avatar
gejun committed
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71

    brpc::Server server;
    brpc::ServerOptions options;
    options.nshead_service = new MyNsheadProtocol;
    options.idle_timeout_sec = FLAGS_idle_timeout_s;
    options.max_concurrency = FLAGS_max_concurrency;

    // Start the server.
    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;
}