实现基础的统计指标

internal/db/models/metric_stat_model_ext.go

@@ -0,0 +1,12 @@
+package models
+
+import "encoding/json"
+
+// DecodeKeys 解析Key
+func (this *MetricStat) DecodeKeys() []string {
+	var result []string
+	if len(this.Keys) > 0 {
+		_ = json.Unmarshal([]byte(this.Keys), &result)
+	}
+	return result
+}