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/gensvc.go

@@ -0,0 +1,37 @@
+package generator
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"github.com/tal-tech/go-zero/tools/goctl/rpc/parser"
+	"github.com/tal-tech/go-zero/tools/goctl/util"
+)
+
+const svcTemplate = `package svc
+
+import {{.imports}}
+
+type ServiceContext struct {
+	c config.Config
+}
+
+func NewServiceContext(c config.Config) *ServiceContext {
+	return &ServiceContext{
+		c:c,
+	}
+}
+`
+
+func (g *defaultGenerator) GenSvc(ctx DirContext, _ parser.Proto) error {
+	dir := ctx.GetSvc()
+	fileName := filepath.Join(dir.Filename, formatFilename("service_context")+".go")
+	text, err := util.LoadTemplate(category, svcTemplateFile, svcTemplate)
+	if err != nil {
+		return err
+	}
+
+	return util.With("svc").GoFmt(true).Parse(text).SaveTo(map[string]interface{}{
+		"imports": fmt.Sprintf(`"%v"`, ctx.GetConfig().Package),
+	}, fileName, false)
+}