fix(api): expose alert fingerprint in the API

internal/models/alert.go

@@ -44,21 +44,21 @@ type Alert struct {
 	Alertmanager []AlertmanagerInstance `json:"alertmanager"`
 	Receiver     string                 `json:"receiver"`
 	// fingerprints are precomputed for speed
-	labelsFP  string `hash:"-"`
+	LabelsFP  string `json:"id" hash:"-"`
 	contentFP string `hash:"-"`
 }
 
 // UpdateFingerprints will generate a new set of fingerprints for this alert
 // it should be called after modifying any field that isn't tagged with hash:"-"
 func (a *Alert) UpdateFingerprints() {
-	a.labelsFP = fmt.Sprintf("%x", structhash.Sha1(a.Labels, 1))
+	a.LabelsFP = fmt.Sprintf("%x", structhash.Sha1(a.Labels, 1))
 	a.contentFP = fmt.Sprintf("%x", structhash.Sha1(a, 1))
 }
 
 // LabelsFingerprint is a checksum computed only from labels which should be
 // unique for every alert
 func (a *Alert) LabelsFingerprint() string {
-	return a.labelsFP
+	return a.LabelsFP
 }
 
 // ContentFingerprint is a checksum computed from entire alert object

internal/models/api_test.go

@@ -122,7 +122,8 @@ func TestDedupSharedMaps(t *testing.T) {
           "inhibitedBy": null
         }
       ],
-      "receiver": ""
+      "receiver": "",
+      "id": ""
     },
     {
       "annotations": [],
@@ -158,7 +159,8 @@ func TestDedupSharedMaps(t *testing.T) {
           "inhibitedBy": null
         }
       ],
-      "receiver": ""
+      "receiver": "",
+      "id": ""
     },
     {
       "annotations": [],
@@ -194,7 +196,8 @@ func TestDedupSharedMaps(t *testing.T) {
           "inhibitedBy": null
         }
       ],
-      "receiver": ""
+      "receiver": "",
+      "id": ""
     }
   ],
   "id": "",