feat: replace the kratos error by own

Author: coderi421

gmicro/server/rpcserver/selector/node/ewma/node.go

@@ -8,9 +8,11 @@ import (
 	"sync/atomic"
 	"time"
 
+	"google.golang.org/grpc/codes"
+
 	"github.com/CoderI421/gframework/gmicro/server/rpcserver/selector"
 
-	"github.com/go-kratos/kratos/v2/errors"
+	"github.com/CoderI421/gframework/pkg/errors"
 )
 
 const (
@@ -164,7 +166,7 @@ func (n *Node) Pick() selector.DoneFunc {
 					success = 0
 				}
 			} else if errors.Is(context.DeadlineExceeded, di.Err) || errors.Is(context.Canceled, di.Err) ||
-				errors.IsServiceUnavailable(di.Err) || errors.IsGatewayTimeout(di.Err) {
+				errors.FromGrpcErrorCode(di.Err) == int(codes.Unavailable) || errors.FromGrpcErrorCode(di.Err) == int(codes.DeadlineExceeded) {
 				success = 0
 			}
 		}

pkg/errors/errors.go

@@ -159,6 +159,19 @@ func FromGrpcError(e error) error {
 	}
 }
 
+func FromGrpcErrorCode(e error) int {
+	if e == nil {
+		return 100002
+	}
+
+	st, ok := status.FromError(e)
+	if !ok {
+		return 100002
+	}
+
+	return int(st.Code())
+}
+
 func ToGrpcError(e error) error {
 	if e == nil {
 		return e