Alerting: allow custom UID for contact points through API (#50089)

* Alerting: allow custom UID for contact points through API

* fix auth

pkg/services/ngalert/provisioning/contactpoints.go

@@ -132,7 +132,9 @@ func (ecp *ContactPointService) CreateContactPoint(ctx context.Context, orgID in
 		extractedSecrets[k] = encryptedValue
 	}
 
-	contactPoint.UID = util.GenerateShortUID()
+	if contactPoint.UID == "" {
+		contactPoint.UID = util.GenerateShortUID()
+	}
 	grafanaReceiver := &apimodels.PostableGrafanaReceiver{
 		UID:                   contactPoint.UID,
 		Name:                  contactPoint.Name,

pkg/services/ngalert/provisioning/contactpoints_test.go

@@ -42,6 +42,21 @@ func TestContactPointService(t *testing.T) {
 		require.Equal(t, "slack", cps[1].Type)
 	})
 
+	t.Run("it's possbile to use a custom uid", func(t *testing.T) {
+		customUID := "1337"
+		sut := createContactPointServiceSut(secretsService)
+		newCp := createTestContactPoint()
+		newCp.UID = customUID
+
+		_, err := sut.CreateContactPoint(context.Background(), 1, newCp, models.ProvenanceAPI)
+		require.NoError(t, err)
+
+		cps, err := sut.GetContactPoints(context.Background(), 1)
+		require.NoError(t, err)
+		require.Len(t, cps, 2)
+		require.Equal(t, customUID, cps[1].UID)
+	})
+
 	t.Run("default provenance of contact points is none", func(t *testing.T) {
 		sut := createContactPointServiceSut(secretsService)