mirror of https://github.com/grpc/grpc-go.git
90 lines
2.3 KiB
Go
90 lines
2.3 KiB
Go
/*
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*
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* Copyright 2019 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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// Binary client is an example client.
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package main
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import (
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"context"
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"flag"
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"fmt"
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"log"
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"net"
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"time"
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"google.golang.org/grpc"
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pb "google.golang.org/grpc/examples/features/proto/echo"
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profsvc "google.golang.org/grpc/profiling/service"
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)
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var addr = flag.String("addr", "localhost:50051", "the address to connect to")
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var profilingPort = flag.Int("profilingPort", 50052, "port to expose the profiling service on")
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func setupClientProfiling() error {
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lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *profilingPort))
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if err != nil {
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log.Printf("failed to listen: %v\n", err)
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return err
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}
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fmt.Printf("server listening at %v\n", lis.Addr())
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s := grpc.NewServer()
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// Register this grpc.Server with profiling.
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pc := &profsvc.ProfilingConfig{
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Server: s,
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Enabled: true,
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StreamStatsSize: 1024,
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}
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if err = profsvc.Init(pc); err != nil {
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fmt.Printf("error calling profsvc.Init: %v\n", err)
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return err
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}
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go s.Serve(lis)
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return nil
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}
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func main() {
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flag.Parse()
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if err := setupClientProfiling(); err != nil {
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log.Fatalf("error setting up profiling: %v\n", err)
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}
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// Set up a connection to the server.
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conn, err := grpc.Dial(*addr, grpc.WithInsecure(), grpc.WithBlock())
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if err != nil {
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log.Fatalf("did not connect: %v", err)
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}
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defer conn.Close()
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c := pb.NewEchoClient(conn)
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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res, err := c.UnaryEcho(ctx, &pb.EchoRequest{Message: "hello, profiling"})
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fmt.Printf("UnaryEcho call returned %q, %v\n", res.GetMessage(), err)
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if err != nil {
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log.Fatalf("error calling UnaryEcho: %v", err)
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}
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log.Printf("sleeping for 30 seconds with exposed profiling service on :%d\n", *profilingPort)
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time.Sleep(30 * time.Second)
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}
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