client.cpp 5.13 KB
Newer Older
gejun's avatar
gejun committed
1
// Copyright (c) 2014 Baidu, Inc.
gejun's avatar
gejun committed
2 3 4 5 6 7 8 9 10 11 12 13
// 
// Licensed 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
14 15 16 17 18 19

// A client sending requests to ubrpc server every 1 second.
// This client can access the server in public/baidu-rpc-ub/example/echo_c++_compack_ubrpc as well.

#include <gflags/gflags.h>

20 21
#include <butil/logging.h>
#include <butil/time.h>
gejun's avatar
gejun committed
22 23 24 25 26 27 28 29 30 31 32 33
#include <brpc/channel.h>
#include "echo.pb.h"

DEFINE_string(server, "0.0.0.0:8500", "IP Address of server");
DEFINE_string(load_balancer, "", "The algorithm for load balancing");
DEFINE_int32(timeout_ms, 100, "RPC timeout in milliseconds");
DEFINE_int32(max_retry, 3, "Max retries(not including the first RPC)");
DEFINE_bool(multi_args, false,
            "The ubrpc to be accessed has more than one request and response");

int main(int argc, char* argv[]) {
    // Parse gflags. We recommend you to use gflags as well.
34
    GFLAGS_NS::ParseCommandLineFlags(&argc, &argv, true);
gejun's avatar
gejun committed
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
    
    // A Channel represents a communication line to a Server. Notice that 
    // Channel is thread-safe and can be shared by all threads in your program.
    brpc::Channel channel;
    
    // Initialize the channel, NULL means using default options. 
    brpc::ChannelOptions options;
    options.protocol = "ubrpc_compack";
    options.timeout_ms = FLAGS_timeout_ms/*milliseconds*/;
    options.max_retry = FLAGS_max_retry;
    if (channel.Init(FLAGS_server.c_str(), FLAGS_load_balancer.c_str(), &options) != 0) {
        LOG(ERROR) << "Fail to initialize channel";
        return -1;
    }

    example::EchoService_Stub stub(&channel);
    example::EchoRequest request;
    example::EchoResponse response;
    example::MultiRequests multi_requests;
    example::MultiResponses multi_responses;
    brpc::Controller cntl;
    
    // Send a request and wait for the response every 1 second.
    int log_id = 0;
    while (!brpc::IsAskedToQuit()) {
        // Reset before reuse.
        cntl.Reset();
        
        if (!FLAGS_multi_args) {
            request.Clear();
            response.Clear();
            request.set_message("hello world");
            for (int i = (log_id % 7); i > 0; --i) {
                example::Object* obj = request.add_objects();
                obj->set_id(log_id);
                if (log_id % 2 == 0) {
                    obj->set_value(log_id);
                }
                if (log_id % 3 == 0) {
                    obj->set_note("foo");
                }
                if (log_id % 5 == 0) {
                    for (int j = (log_id % 3); j > 0; --j) {
                        example::Parameter* param = obj->add_params();
                        if (log_id % 2 == 0) {
                            param->set_x(log_id);
                        }
                        if (log_id % 3 == 0) {
                            param->set_y("bar");
                        }
                        if (log_id % 5 == 0) {
                            param->set_z(log_id);
                        }
                    }
                }
            }
        } else {
            multi_requests.Clear();
            multi_responses.Clear();
            multi_requests.mutable_req1()->set_message("hello");
            multi_requests.mutable_req2()->set_message("world");
            cntl.set_idl_names(brpc::idl_multi_req_multi_res);
        }
        cntl.set_log_id(log_id ++);  // set by user

        // Because `done'(last parameter) is NULL, this function waits until
        // the response comes back or error occurs(including timedout).
        if (!FLAGS_multi_args) {
            // [idl] void Echo(EchoRequest req, out EchoResponse res);
            stub.Echo(&cntl, &request, &response, NULL);
        } else {
            // [idl] uint32_t EchoWithMultiArgs(EchoRequest req1, EchoRequest req2, 
            //                                     out EchoResponse res1, out EchoResponse res2);
            stub.EchoWithMultiArgs(&cntl, &multi_requests, &multi_responses, NULL);
        }
        if (!cntl.Failed()) {
            LOG(INFO) << "Received response from " << cntl.remote_side()
                       << ": " << noflush;
            if (!FLAGS_multi_args) {
                LOG(INFO) << response.message() << noflush;
            } else {
                LOG(INFO) << "res1=" << multi_responses.res1().message()
                          << " res2=" << multi_responses.res2().message()
                          << " result=" << cntl.idl_result()
                          << noflush;
            }
            LOG(INFO) << " latency=" << cntl.latency_us() << "us";
        } else {
            LOG(ERROR) << "Fail to send request, " << cntl.ErrorText();
        }
        sleep(1);
    }

    LOG(INFO) << "EchoClient is going to quit";
    return 0;
}