chore: import upstream snapshot with attribution

2026-07-13 13:29:29 +08:00
commit f52cf32e56
1718 changed files with 366293 additions and 0 deletions
@@ -0,0 +1,82 @@
+// 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 client sending requests to server every 1 second.
+
+#include <gflags/gflags.h>
+
+#include <butil/logging.h>
+#include <butil/time.h>
+#include <butil/strings/string_piece.h>
+#include <brpc/channel.h>
+#include <brpc/nshead_message.h>
+#include <bvar/bvar.h>
+
+bvar::LatencyRecorder g_latency_recorder("client");
+
+DEFINE_string(server, "0.0.0.0:8010", "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.
+    GFLAGS_NAMESPACE::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_NSHEAD;
+    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;
+    }
+
+    // Send a request and wait for the response every 1 second.
+    int log_id = 0;
+    while (!brpc::IsAskedToQuit()) {
+        brpc::NsheadMessage request;
+        brpc::NsheadMessage response;
+        brpc::Controller cntl;
+
+        // Append message to `request'
+        request.body.append("hello world");
+
+        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).
+        channel.CallMethod(NULL, &cntl, &request, &response, NULL);
+        if (cntl.Failed()) {
+            LOG(ERROR) << "Fail to send nshead request, " << cntl.ErrorText();
+            sleep(1); // Remove this sleep in production code.
+        } else {
+            g_latency_recorder << cntl.latency_us();
+        }
+        LOG_EVERY_SECOND(INFO)
+            << "Sending nshead requests at qps=" << g_latency_recorder.qps(1)
+            << " latency=" << g_latency_recorder.latency(1);
+    }
+
+    LOG(INFO) << "EchoClient is going to quit";
+    return 0;
+}