feat: refactor go.mod.

registry/eureka/client.go

@@ -1,15 +1,18 @@
 package eureka
 
 import (
-	"github.com/go-kratos/kratos/v2/log"
-
 	eurekaKratos "github.com/go-kratos/kratos/contrib/registry/eureka/v2"
+	"github.com/go-kratos/kratos/v2/log"
 
 	conf "github.com/tx7do/kratos-bootstrap/api/gen/go/conf/v1"
 )
 
 // NewRegistry 创建一个注册发现客户端 - Eureka
 func NewRegistry(c *conf.Registry) *eurekaKratos.Registry {
+	if c == nil || c.Eureka == nil {
+		return nil
+	}
+
 	var opts []eurekaKratos.Option
 	opts = append(opts, eurekaKratos.WithHeartbeat(c.Eureka.HeartbeatInterval.AsDuration()))
 	opts = append(opts, eurekaKratos.WithRefresh(c.Eureka.RefreshInterval.AsDuration()))