fix issue indexer not triggered when migrating a repository (#9332)

modules/indexer/issues/indexer.go

@@ -204,6 +204,13 @@ func populateIssueIndexer() {
 		}
 
 		for _, repo := range repos {
+			UpdateRepoIndexer(repo)
+		}
+	}
+}
+
+// UpdateRepoIndexer add/update all issues of the repositories
+func UpdateRepoIndexer(repo *models.Repository) {
 	is, err := models.Issues(&models.IssuesOptions{
 		RepoIDs:  []int64{repo.ID},
 		IsClosed: util.OptionalBoolNone,
@@ -211,17 +218,15 @@ func populateIssueIndexer() {
 	})
 	if err != nil {
 		log.Error("Issues: %v", err)
-				continue
+		return
 	}
 	if err = models.IssueList(is).LoadDiscussComments(); err != nil {
 		log.Error("LoadComments: %v", err)
-				continue
+		return
 	}
 	for _, issue := range is {
 		UpdateIssueIndexer(issue)
 	}
-		}
-	}
 }
 
 // UpdateIssueIndexer add/update an issue to the issue indexer

modules/notification/indexer/indexer.go

@@ -111,6 +111,7 @@ func (r *indexerNotifier) NotifyDeleteRepository(doer *models.User, repo *models
 }
 
 func (r *indexerNotifier) NotifyMigrateRepository(doer *models.User, u *models.User, repo *models.Repository) {
+	issue_indexer.UpdateRepoIndexer(repo)
 	if setting.Indexer.RepoIndexerEnabled && !repo.IsEmpty {
 		code_indexer.UpdateRepoIndexer(repo)
 	}