funny-falcon · February 11, 2019 18:37 · Feb 11, 2019 · Feb 11, 2019 · Feb 11, 2019
diff --git a/grpc_client.go → greeter_client.go b/grpc_client.go → greeter_client.go
diff --git a/grpc_server.go → greeter_server.go b/grpc_server.go → greeter_server.go
diff --git a/grpc_server → grpc_server.go b/grpc_server → grpc_server.go
diff --git a/grpc_client.go b/grpc_client.go
@@ -0,0 +1,79 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * 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.
+ *
+ */
+
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"google.golang.org/grpc"
+	pb "google.golang.org/grpc/examples/helloworld/helloworld"
+)
+
+const (
+	address     = "localhost:50051"
+	defaultName = "world"
+)
+
+var addr = flag.String("a", address, "concurrent goroutines")
+var goro = flag.Int("g", 10, "concurrent goroutines")
+var tm = flag.Duration("t", 5*time.Second, "timeout")
+
+func main() {
+	flag.Parse()
+	// Set up a connection to the server.
+	conn, err := grpc.Dial(*addr, grpc.WithInsecure())
+	if err != nil {
+		log.Fatalf("did not connect: %v", err)
+	}
+	defer conn.Close()
+	c := pb.NewGreeterClient(conn)
+
+	ctx, cancel := context.WithTimeout(context.Background(), *tm)
+	defer cancel()
+
+	name := defaultName
+	var wg sync.WaitGroup
+	var cnt uint32
+	for i := 0; i < *goro; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for {
+				select {
+				case <-ctx.Done():
+					return
+				default:
+				}
+				_, err := c.SayHello(ctx, &pb.HelloRequest{Name: name})
+				if err != nil {
+					break
+				}
+				atomic.AddUint32(&cnt, 1)
+			}
+		}()
+	}
+	wg.Wait()
+	fmt.Printf("%d reqs, %.3f rps\n", cnt, float64(cnt)*float64(time.Second) / float64(*tm))
+}
diff --git a/grpc_server b/grpc_server
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * 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.
+ *
+ */
+
+//go:generate protoc -I ../helloworld --go_out=plugins=grpc:../helloworld ../helloworld/helloworld.proto
+
+package main
+
+import (
+	"context"
+	"log"
+	"net"
+
+	"google.golang.org/grpc"
+	pb "google.golang.org/grpc/examples/helloworld/helloworld"
+	"google.golang.org/grpc/reflection"
+)
+
+const (
+	port = ":50051"
+)
+
+// server is used to implement helloworld.GreeterServer.
+type server struct{}
+
+// SayHello implements helloworld.GreeterServer
+func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
+	return &pb.HelloReply{Message: "Hello " + in.Name}, nil
+}
+
+func main() {
+	lis, err := net.Listen("tcp", port)
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+	s := grpc.NewServer()
+	pb.RegisterGreeterServer(s, &server{})
+	// Register reflection service on gRPC server.
+	reflection.Register(s)
+	if err := s.Serve(lis); err != nil {
+		log.Fatalf("failed to serve: %v", err)
+	}
+}