package main import ( log "github.com/golang/glog" "github.com/micro/go-micro/cmd" "github.com/micro/go-micro/examples/server/handler" "github.com/micro/go-micro/examples/server/subscriber" "github.com/micro/go-micro/server" "golang.org/x/net/context" ) func logWrapper(fn server.HandlerFunc) server.HandlerFunc { return func(ctx context.Context, req server.Request, rsp interface{}) error { log.Infof("[Log Wrapper] Before serving request method: %v", req.Method()) err := fn(ctx, req, rsp) log.Infof("[Log Wrapper] After serving request") return err } } func logSubWrapper(fn server.SubscriberFunc) server.SubscriberFunc { return func(ctx context.Context, req server.Publication) error { log.Infof("[Log Sub Wrapper] Before serving publication topic: %v", req.Topic()) err := fn(ctx, req) log.Infof("[Log Sub Wrapper] After serving publication") return err } } func main() { // optionally setup command line usage cmd.Init() md := server.Config().Metadata() md["datacenter"] = "local" server.DefaultServer = server.NewServer( server.WrapHandler(logWrapper), server.WrapSubscriber(logSubWrapper), server.Metadata(md), ) // Initialise Server server.Init( server.Name("go.micro.srv.example"), ) // Register Handlers server.Handle( server.NewHandler( new(handler.Example), ), ) // Register Subscribers if err := server.Subscribe( server.NewSubscriber( "topic.go.micro.srv.example", new(subscriber.Example), ), ); err != nil { log.Fatal(err) } if err := server.Subscribe( server.NewSubscriber( "topic.go.micro.srv.example", subscriber.Handler, ), ); err != nil { log.Fatal(err) } // Run server if err := server.Run(); err != nil { log.Fatal(err) } }