refactor(api): return alert groups as a mapping id->group

internal/models/api.go

@@ -34,7 +34,7 @@ type AlertsResponse struct {
 	Timestamp   string                 `json:"timestamp"`
 	Version     string                 `json:"version"`
 	Upstreams   AlertmanagerAPISummary `json:"upstreams"`
-	AlertGroups []AlertGroup           `json:"groups"`
+	AlertGroups map[string]AlertGroup  `json:"groups"`
 	Colors      LabelsColorMap         `json:"colors"`
 	Filters     []Filter               `json:"filters"`
 	Counters    LabelsCountMap         `json:"counters"`

views.go

@@ -94,7 +94,7 @@ func alerts(c *gin.Context) {
 	matchFilters, validFilters := getFiltersFromQuery(c.Query("q"))
 
 	// set pointers for data store objects, need a lock until end of view is reached
-	alerts := []models.AlertGroup{}
+	alerts := map[string]models.AlertGroup{}
 	colors := models.LabelsColorMap{}
 	// used for top labels dropdown
 	counters := models.LabelsCountMap{}
@@ -164,7 +164,7 @@ func alerts(c *gin.Context) {
 
 		if len(agCopy.Alerts) > 0 {
 			agCopy.Hash = agCopy.ContentFingerprint()
-			alerts = append(alerts, agCopy)
+			alerts[agCopy.ID] = agCopy
 		}
 
 	}