add zrpc client interceptor

zrpc/client.go

@@ -17,6 +17,7 @@ var (
 
 type (
 	Client interface {
+		AddInterceptor(interceptor grpc.UnaryClientInterceptor)
 		Conn() *grpc.ClientConn
 	}
 
@@ -78,6 +79,10 @@ func NewClientWithTarget(target string, opts ...internal.ClientOption) (Client,
 	return internal.NewClient(target, opts...)
 }
 
+func (rc *RpcClient) AddInterceptor(interceptor grpc.UnaryClientInterceptor) {
+	rc.client.AddInterceptor(interceptor)
+}
+
 func (rc *RpcClient) Conn() *grpc.ClientConn {
 	return rc.client.Conn()
 }