节点根据健康检查自动上下线

internal/db/models/node_cluster_model_ext.go

@@ -1 +1,23 @@
 package models
+
+import (
+	"encoding/json"
+	"github.com/TeaOSLab/EdgeCommon/pkg/dnsconfigs"
+)
+
+// 解析DNS配置
+func (this *NodeCluster) DecodeDNSConfig() (*dnsconfigs.ClusterDNSConfig, error) {
+	if len(this.Dns) == 0 || this.Dns == "null" {
+		// 一定要返回一个默认的值，防止产生nil
+		return &dnsconfigs.ClusterDNSConfig{
+			NodesAutoSync:   false,
+			ServersAutoSync: false,
+		}, nil
+	}
+	dnsConfig := &dnsconfigs.ClusterDNSConfig{}
+	err := json.Unmarshal([]byte(this.Dns), &dnsConfig)
+	if err != nil {
+		return nil, err
+	}
+	return dnsConfig, nil
+}