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// Copyright (c) 2017 Baidu, Inc.
//
// 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.
// A client sending thrift requests to server every 1 second.
#include <gflags/gflags.h>
#include "gen-cpp/echo_types.h"
#include <butil/logging.h>
#include <butil/time.h>
#include <brpc/channel.h>
#include <brpc/thrift_message.h>
#include <bvar/bvar.h>
bvar::LatencyRecorder g_latency_recorder("client");
DEFINE_string(server, "0.0.0.0:8019", "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)");
int main(int argc, char* argv[]) {
// Parse gflags. We recommend you to use gflags as well.
google::ParseCommandLineFlags(&argc, &argv, true);
// 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 = brpc::PROTOCOL_THRIFT;
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;
}
brpc::ThriftStub stub(&channel);
// Send a request and wait for the response every 1 second.
while (!brpc::IsAskedToQuit()) {
brpc::Controller cntl;
example::EchoRequest req;
example::EchoResponse res;
req.__set_data("hello");
req.__set_need_by_proxy(10);
stub.CallMethod("Echo", &cntl, &req, &res, NULL);
if (cntl.Failed()) {
LOG(ERROR) << "Fail to send thrift request, " << cntl.ErrorText();
sleep(1); // Remove this sleep in production code.
} else {
g_latency_recorder << cntl.latency_us();
LOG(INFO) << "Thrift Response: " << res;
}
LOG_EVERY_SECOND(INFO)
<< "Sending thrift requests at qps=" << g_latency_recorder.qps(1)
<< " latency=" << g_latency_recorder.latency(1);
sleep(1);
}
LOG(INFO) << "EchoClient is going to quit";
return 0;
}