reactor rpc (#179)

* reactor rpc generation

* update flag

* update command

* update command

* update unit test

* delete test file

* optimize code

* update doc

* update gen pb

* rename target dir

* update mysql data type convert rule

* add done flag

* optimize req/reply parameter

* optimize req/reply parameter

* remove waste code

* remove duplicate parameter

* format code

* format code

* optimize naming

* reactor rpcv2 to rpc

* remove new line

* format code

* rename underline to snake

* reactor getParentPackage

* remove debug log

* reactor background

tools/goctl/rpc/generator/genmain.go

@@ -0,0 +1,70 @@
+package generator
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+
+	"github.com/tal-tech/go-zero/tools/goctl/rpc/parser"
+	"github.com/tal-tech/go-zero/tools/goctl/util"
+)
+
+const mainTemplate = `{{.head}}
+
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	{{.imports}}
+
+	"github.com/tal-tech/go-zero/core/conf"
+	"github.com/tal-tech/go-zero/zrpc"
+	"google.golang.org/grpc"
+)
+
+var configFile = flag.String("f", "etc/{{.serviceName}}.yaml", "the config file")
+
+func main() {
+	flag.Parse()
+
+	var c config.Config
+	conf.MustLoad(*configFile, &c)
+	ctx := svc.NewServiceContext(c)
+	srv := server.New{{.service}}Server(ctx)
+
+	s := zrpc.MustNewServer(c.RpcServerConf, func(grpcServer *grpc.Server) {
+		{{.pkg}}.Register{{.service}}Server(grpcServer, srv)
+	})
+	defer s.Stop()
+
+	fmt.Printf("Starting rpc server at %s...\n", c.ListenOn)
+	s.Start()
+}
+`
+
+func (g *defaultGenerator) GenMain(ctx DirContext, proto parser.Proto) error {
+	dir := ctx.GetMain()
+	serviceNameLower := formatFilename(ctx.GetMain().Base)
+	fileName := filepath.Join(dir.Filename, fmt.Sprintf("%v.go", serviceNameLower))
+	imports := make([]string, 0)
+	pbImport := fmt.Sprintf(`"%v"`, ctx.GetPb().Package)
+	svcImport := fmt.Sprintf(`"%v"`, ctx.GetSvc().Package)
+	remoteImport := fmt.Sprintf(`"%v"`, ctx.GetServer().Package)
+	configImport := fmt.Sprintf(`"%v"`, ctx.GetConfig().Package)
+	imports = append(imports, configImport, pbImport, remoteImport, svcImport)
+	head := util.GetHead(proto.Name)
+	text, err := util.LoadTemplate(category, mainTemplateFile, mainTemplate)
+	if err != nil {
+		return err
+	}
+
+	return util.With("main").GoFmt(true).Parse(text).SaveTo(map[string]interface{}{
+		"head":        head,
+		"serviceName": serviceNameLower,
+		"imports":     strings.Join(imports, util.NL),
+		"pkg":         proto.PbPackage,
+		"service":     parser.CamelCase(proto.Service.Name),
+	}, fileName, false)
+}