87 lines
3.5 KiB
C++
87 lines
3.5 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// A client sending requests to server every 1 second using grpc.
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#include <gflags/gflags.h>
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#include <butil/logging.h>
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#include <butil/time.h>
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#include <brpc/channel.h>
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#include "helloworld.pb.h"
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DEFINE_string(protocol, "h2:grpc", "Protocol type. Defined in src/brpc/options.proto");
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DEFINE_string(server, "0.0.0.0:50051", "IP Address of server");
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DEFINE_string(load_balancer, "", "The algorithm for load balancing");
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DEFINE_int32(timeout_ms, 100, "RPC timeout in milliseconds");
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DEFINE_int32(max_retry, 3, "Max retries(not including the first RPC)");
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DEFINE_int32(interval_ms, 1000, "Milliseconds between consecutive requests");
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DEFINE_bool(gzip, false, "compress body using gzip");
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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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if (FLAGS_gzip) {
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GFLAGS_NS::SetCommandLineOption("http_body_compress_threshold", 0);
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}
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// A Channel represents a communication line to a Server. Notice that
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// Channel is thread-safe and can be shared by all threads in your program.
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brpc::Channel channel;
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// Initialize the channel, NULL means using default options.
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brpc::ChannelOptions options;
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options.protocol = FLAGS_protocol;
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options.timeout_ms = FLAGS_timeout_ms/*milliseconds*/;
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options.max_retry = FLAGS_max_retry;
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if (channel.Init(FLAGS_server.c_str(), FLAGS_load_balancer.c_str(), &options) != 0) {
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LOG(ERROR) << "Fail to initialize channel";
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return -1;
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}
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// Normally, you should not call a Channel directly, but instead construct
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// a stub Service wrapping it. stub can be shared by all threads as well.
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helloworld::Greeter_Stub stub(&channel);
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// Send a request and wait for the response every 1 second.
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while (!brpc::IsAskedToQuit()) {
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// We will receive response synchronously, safe to put variables
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// on stack.
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helloworld::HelloRequest request;
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helloworld::HelloReply response;
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brpc::Controller cntl;
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request.set_name("grpc_req_from_brpc");
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if (FLAGS_gzip) {
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cntl.set_request_compress_type(brpc::COMPRESS_TYPE_GZIP);
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}
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// Because `done'(last parameter) is NULL, this function waits until
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// the response comes back or error occurs(including timedout).
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stub.SayHello(&cntl, &request, &response, NULL);
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if (!cntl.Failed()) {
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LOG(INFO) << "Received response from " << cntl.remote_side()
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<< " to " << cntl.local_side()
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<< ": " << response.message()
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<< " latency=" << cntl.latency_us() << "us";
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} else {
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LOG(WARNING) << cntl.ErrorText();
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}
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usleep(FLAGS_interval_ms * 1000L);
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}
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return 0;
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}
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