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/gen.go

@@ -0,0 +1,98 @@
+package generator
+
+import (
+	"path/filepath"
+
+	"github.com/tal-tech/go-zero/tools/goctl/rpc/parser"
+	"github.com/tal-tech/go-zero/tools/goctl/util"
+	"github.com/tal-tech/go-zero/tools/goctl/util/console"
+	"github.com/tal-tech/go-zero/tools/goctl/util/ctx"
+)
+
+type RpcGenerator struct {
+	g Generator
+}
+
+func NewDefaultRpcGenerator() *RpcGenerator {
+	return NewRpcGenerator(NewDefaultGenerator())
+}
+
+func NewRpcGenerator(g Generator) *RpcGenerator {
+	return &RpcGenerator{
+		g: g,
+	}
+}
+
+func (g *RpcGenerator) Generate(src, target string, protoImportPath []string) error {
+	abs, err := filepath.Abs(target)
+	if err != nil {
+		return err
+	}
+
+	err = util.MkdirIfNotExist(abs)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.Prepare()
+	if err != nil {
+		return err
+	}
+
+	projectCtx, err := ctx.Prepare(abs)
+	if err != nil {
+		return err
+	}
+
+	p := parser.NewDefaultProtoParser()
+	proto, err := p.Parse(src)
+	if err != nil {
+		return err
+	}
+
+	dirCtx, err := mkdir(projectCtx, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenEtc(dirCtx, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenPb(dirCtx, protoImportPath, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenConfig(dirCtx, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenSvc(dirCtx, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenLogic(dirCtx, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenServer(dirCtx, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenMain(dirCtx, proto)
+	if err != nil {
+		return err
+	}
+
+	err = g.g.GenCall(dirCtx, proto)
+
+	console.NewColorConsole().MarkDone()
+
+	return err
+}