Function main

examples/features/orca/server/main.go:57–97

()

}

func main() {
	flag.Parse()

	lis, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", *port))
	if err != nil {
		log.Fatalf("Failed to listen: %v", err)
	}
	fmt.Printf("Server listening at %v\n", lis.Addr())

	// Create the gRPC server with the orca.CallMetricsServerOption() option,
	// which will enable per-call metric recording.  No ServerMetricsProvider
	// is given here because the out-of-band reporting is enabled separately.
	s := grpc.NewServer(orca.CallMetricsServerOption(nil))
	pb.RegisterEchoServer(s, &server{})

	// Register the orca service for out-of-band metric reporting, and set the
	// minimum reporting interval to 3 seconds.  Note that, by default, the
	// minimum interval must be at least 30 seconds, but 3 seconds is set via
	// an internal-only option for illustration purposes only.
	smr := orca.NewServerMetricsRecorder()
	opts := orca.ServiceOptions{
		MinReportingInterval:  3 * time.Second,
		ServerMetricsProvider: smr,
	}
	internal.ORCAAllowAnyMinReportingInterval.(func(so *orca.ServiceOptions))(&opts)
	if err := orca.Register(s, opts); err != nil {
		log.Fatalf("Failed to register ORCA service: %v", err)
	}

	// Simulate CPU utilization reporting.
	go func() {
		for {
			smr.SetCPUUtilization(.5)
			time.Sleep(2 * time.Second)
			smr.SetCPUUtilization(.9)
			time.Sleep(2 * time.Second)
		}
	}()

	s.Serve(lis)
}