fix: skip unhealthy or disabled services form nacos and always marshal AllowTools field (#3220)

Co-authored-by: EricaLiu <30773688+Erica177@users.noreply.github.com>

registry/mcp_model.go

@@ -43,7 +43,7 @@ type McpServerRule struct {
 	MatchRoute []string      `json:"_match_route_,omitempty"`
 	Server     *ServerConfig `json:"server,omitempty"`
 	Tools      []*McpTool    `json:"tools,omitempty"`
-	AllowTools []string      `json:"allowTools,omitempty"`
+	AllowTools []string      `json:"allowTools"`
 }
 
 type ServerConfig struct {

registry/nacos/mcpserver/watcher.go

@@ -434,7 +434,7 @@ func (w *watcher) processToolConfig(dataId, data string, credentials map[string]
 		rule.Server.SecuritySchemes = toolsDescription.SecuritySchemes
 	}
 
-	var allowTools []string
+	allowTools := []string{}
 	for _, t := range toolsDescription.Tools {
 		convertTool := &provider.McpTool{Name: t.Name, Description: t.Description}
 
@@ -813,6 +813,9 @@ func generateServiceEntry(host string, services *model.Service) *v1alpha3.Servic
 	endpoints := make([]*v1alpha3.WorkloadEntry, 0)
 
 	for _, service := range services.Hosts {
+		if !service.Healthy || !service.Enable {
+			continue
+		}
 		protocol := common.HTTP
 		if service.Metadata != nil && service.Metadata["protocol"] != "" {
 			protocol = common.ParseProtocol(service.Metadata["protocol"])