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/util/ctx/modcheck_test.go

@@ -0,0 +1,67 @@
+package ctx
+
+import (
+	"go/build"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/stringx"
+	"github.com/tal-tech/go-zero/tools/goctl/rpc/execx"
+	"github.com/tal-tech/go-zero/tools/goctl/util"
+)
+
+func TestIsGoMod(t *testing.T) {
+	// create mod project
+	dft := build.Default
+	gp := dft.GOPATH
+	if len(gp) == 0 {
+		return
+	}
+	projectName := stringx.Rand()
+	dir := filepath.Join(gp, "src", projectName)
+	err := util.MkdirIfNotExist(dir)
+	if err != nil {
+		return
+	}
+
+	_, err = execx.Run("go mod init "+projectName, dir)
+	assert.Nil(t, err)
+	defer func() {
+		_ = os.RemoveAll(dir)
+	}()
+
+	isGoMod, err := IsGoMod(dir)
+	assert.Nil(t, err)
+	assert.Equal(t, true, isGoMod)
+}
+
+func TestIsGoModNot(t *testing.T) {
+	dft := build.Default
+	gp := dft.GOPATH
+	if len(gp) == 0 {
+		return
+	}
+	projectName := stringx.Rand()
+	dir := filepath.Join(gp, "src", projectName)
+	err := util.MkdirIfNotExist(dir)
+	if err != nil {
+		return
+	}
+
+	defer func() {
+		_ = os.RemoveAll(dir)
+	}()
+
+	isGoMod, err := IsGoMod(dir)
+	assert.Nil(t, err)
+	assert.Equal(t, false, isGoMod)
+}
+
+func TestIsGoModWorkDirIsNil(t *testing.T) {
+	_, err := IsGoMod("")
+	assert.Equal(t, err.Error(), func() string {
+		return "the work directory is not found"
+	}())
+}