package main import ( "fmt" "os" "github.com/micro/cli" micro "github.com/micro/go-micro" proto "github.com/micro/go-micro/examples/service/proto" "golang.org/x/net/context" ) /* Example usage of top level service initialisation */ type Greeter struct{} func (g *Greeter) Hello(ctx context.Context, req *proto.HelloRequest, rsp *proto.HelloResponse) error { rsp.Greeting = "Hello " + req.Name return nil } // Setup and the client func client(service micro.Service) { // Create new greeter client greeter := proto.NewGreeterClient("greeter", service.Client()) // Call the greeter rsp, err := greeter.Hello(context.TODO(), &proto.HelloRequest{Name: "John"}) if err != nil { fmt.Println(err) } // Print response fmt.Println(rsp.Greeting) } // Setup some command line flags func flags(service micro.Service) { app := service.Cmd().App() app.Flags = append(app.Flags, &cli.BoolFlag{ Name: "client", Usage: "Launch the client", }, ) // Let's launch the server or the client app.Action = func(c *cli.Context) { if c.Bool("client") { client(service) os.Exit(0) } } } func main() { // Create a new service. Optionally include some options here. service := micro.NewService( micro.Name("greeter"), micro.Version("latest"), micro.Metadata(map[string]string{ "type": "helloworld", }), ) // Setup some flags. Specify --client to run the client flags(service) // Init will parse the command line flags. Any flags set will // override the above settings. Options defined here will // override anything set on the command line. service.Init() // By default we'll run the server unless the flags catch us // Setup the server // Register handler proto.RegisterGreeterHandler(service.Server(), new(Greeter)) // Run the server if err := service.Run(); err != nil { fmt.Println(err) } }