fix indexer reindex bug when gitea restart (#5563)

* fix issue indexer bug reindex when restart gitea

* also fix code indexer reindex when gitea restart

modules/indexer/issue.go

@@ -60,7 +60,7 @@ func InitIssueIndexer(populateIndexer func() error) {
 		return
 	}
 
-	if err = createIssueIndexer(); err != nil {
+	if err = createIssueIndexer(setting.Indexer.IssuePath, issueIndexerLatestVersion); err != nil {
 		log.Fatal(4, "InitIssuesIndexer: create index, %v", err)
 	}
 	if err = populateIndexer(); err != nil {
@@ -69,7 +69,7 @@ func InitIssueIndexer(populateIndexer func() error) {
 }
 
 // createIssueIndexer create an issue indexer if one does not already exist
-func createIssueIndexer() error {
+func createIssueIndexer(path string, latestVersion int) error {
 	mapping := bleve.NewIndexMapping()
 	docMapping := bleve.NewDocumentMapping()
 
@@ -100,8 +100,14 @@ func createIssueIndexer() error {
 	mapping.AddDocumentMapping("_all", bleve.NewDocumentDisabledMapping())
 
 	var err error
-	issueIndexer, err = bleve.New(setting.Indexer.IssuePath, mapping)
-	return err
+	issueIndexer, err = bleve.New(path, mapping)
+	if err != nil {
+		return err
+	}
+
+	return rupture.WriteIndexMetadata(path, &rupture.IndexMetadata{
+		Version: latestVersion,
+	})
 }
 
 // IssueIndexerBatch batch to add updates to

modules/indexer/repo.go

@@ -84,7 +84,7 @@ func InitRepoIndexer(populateIndexer func() error) {
 		return
 	}
 
-	if err = createRepoIndexer(); err != nil {
+	if err = createRepoIndexer(setting.Indexer.RepoPath, repoIndexerLatestVersion); err != nil {
 		log.Fatal(4, "CreateRepoIndexer: %v", err)
 	}
 	if err = populateIndexer(); err != nil {
@@ -93,7 +93,7 @@ func InitRepoIndexer(populateIndexer func() error) {
 }
 
 // createRepoIndexer create a repo indexer if one does not already exist
-func createRepoIndexer() error {
+func createRepoIndexer(path string, latestVersion int) error {
 	var err error
 	docMapping := bleve.NewDocumentMapping()
 	numericFieldMapping := bleve.NewNumericFieldMapping()
@@ -119,8 +119,13 @@ func createRepoIndexer() error {
 	mapping.AddDocumentMapping(repoIndexerDocType, docMapping)
 	mapping.AddDocumentMapping("_all", bleve.NewDocumentDisabledMapping())
 
-	repoIndexer, err = bleve.New(setting.Indexer.RepoPath, mapping)
-	return err
+	repoIndexer, err = bleve.New(path, mapping)
+	if err != nil {
+		return err
+	}
+	return rupture.WriteIndexMetadata(path, &rupture.IndexMetadata{
+		Version: latestVersion,
+	})
 }
 
 func filenameIndexerID(repoID int64, filename string) string {