add shorturl example code

example/shorturl/rpc/transform/transform.go

@@ -0,0 +1,40 @@
+// Code generated by goctl. DO NOT EDIT!
+// Source: transform.proto
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+
+	"shorturl/rpc/transform/internal/config"
+	"shorturl/rpc/transform/internal/server"
+	"shorturl/rpc/transform/internal/svc"
+	transform "shorturl/rpc/transform/pb"
+
+	"github.com/tal-tech/go-zero/core/conf"
+	"github.com/tal-tech/go-zero/rpcx"
+	"google.golang.org/grpc"
+)
+
+var configFile = flag.String("f", "etc/transform.yaml", "the config file")
+
+func main() {
+	flag.Parse()
+
+	var c config.Config
+	conf.MustLoad(*configFile, &c)
+	ctx := svc.NewServiceContext(c)
+	transformerSrv := server.NewTransformerServer(ctx)
+
+	s, err := rpcx.NewServer(c.RpcServerConf, func(grpcServer *grpc.Server) {
+		transform.RegisterTransformerServer(grpcServer, transformerSrv)
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Printf("Starting rpc server at %s...\n", c.ListenOn)
+	s.Start()
+}