modify proto-gen-go-errors version and func name (#1018)

* modify proto-gen-go-errors version and func name

cmd/protoc-gen-go-errors/errors.go

@@ -4,6 +4,7 @@ import (
 	pb "github.com/go-kratos/kratos/v2/errors"
 	"google.golang.org/protobuf/compiler/protogen"
 	"google.golang.org/protobuf/proto"
+	"strings"
 )
 
 const (
@@ -63,9 +64,20 @@ func genErrorsReason(gen *protogen.Plugin, file *protogen.File, g *protogen.Gene
 		err := &errorInfo{
 			Name:     string(enum.Desc.Name()),
 			Value:    string(v.Desc.Name()),
+			CamelValue: Case2Camel(string(v.Desc.Name())),
 			HttpCode: enumCode,
 		}
 		ew.Errors = append(ew.Errors, err)
 	}
 	g.P(ew.execute())
 }
+
+func Case2Camel(name string) string {
+	if !strings.Contains(name,"_") {
+		return name
+	}
+	name = strings.ToLower(name)
+	name = strings.Replace(name, "_", " ", -1)
+	name = strings.Title(name)
+	return strings.Replace(name, " ", "", -1)
+}

cmd/protoc-gen-go-errors/go.mod

@@ -3,6 +3,6 @@ module github.com/go-kratos/kratos/cmd/protoc-gen-go-errors/v2
 go 1.15
 
 require (
-	github.com/go-kratos/kratos/v2 v2.0.0-beta2
+	github.com/go-kratos/kratos/v2 v2.0.0-20210608032802-c551448bbd64
 	google.golang.org/protobuf v1.26.0
-)
+)

cmd/protoc-gen-go-errors/go.sum

@@ -10,6 +10,8 @@ github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.m
 github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/go-kratos/kratos/v2 v2.0.0-20210608032802-c551448bbd64 h1:+x/Zgv46tYhyhdWgoASZRWQpwuaEoHtNz0PMfwT9svM=
+github.com/go-kratos/kratos/v2 v2.0.0-20210608032802-c551448bbd64/go.mod h1:puDEhRv+dqKa4ZdlInEAbO8ibGxqNhAXFjGleIRh9V4=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=

cmd/protoc-gen-go-errors/template.go

@@ -8,7 +8,7 @@ import (
 var errorsTemplate = `
 {{ range .Errors }}
 
-func Is{{.Value}}(err error) bool {
+func Is{{.CamelValue}}(err error) bool {
 	e := errors.FromError(err)
 	if e.Reason == {{.Name}}_{{.Value}}.String() && e.Code == {{.HttpCode}} {
 		return true
@@ -16,7 +16,7 @@ func Is{{.Value}}(err error) bool {
 	return false
 }
 
-func Error{{.Value}}(format string, args ...interface{}) *errors.Error {
+func Error{{.CamelValue}}(format string, args ...interface{}) *errors.Error {
 	 return errors.New({{.HttpCode}}, {{.Name}}_{{.Value}}.String(), fmt.Sprintf(format, args...))
 }
 
@@ -24,9 +24,10 @@ func Error{{.Value}}(format string, args ...interface{}) *errors.Error {
 `
 
 type errorInfo struct {
-	Name  string
-	Value string
-	HttpCode int
+	Name       string
+	Value      string
+	HttpCode   int
+	CamelValue string
 }
 type errorWrapper struct {
 	Errors []*errorInfo