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Fixed race condition when deleting documents by repoId in ElasticSearch (#32185) #32188

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Merged
merged 1 commit into from
Oct 3, 2024
Merged

Fixed race condition when deleting documents by repoId in ElasticSearch (#32185) #32188

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28 changes: 27 additions & 1 deletion modules/indexer/code/elasticsearch/elasticsearch.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ import (
indexer_internal "code.gitea.io/gitea/modules/indexer/internal"
inner_elasticsearch "code.gitea.io/gitea/modules/indexer/internal/elasticsearch"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/typesniffer"
Expand Down Expand Up @@ -197,8 +198,33 @@ func (b *Indexer) Index(ctx context.Context, repo *repo_model.Repository, sha st
return nil
}

// Delete deletes indexes by ids
// Delete entries by repoId
func (b *Indexer) Delete(ctx context.Context, repoID int64) error {
if err := b.doDelete(ctx, repoID); err != nil {
// Maybe there is a conflict during the delete operation, so we should retry after a refresh
log.Warn("Deletion of entries of repo %v within index %v was erroneus. Trying to refresh index before trying again", repoID, b.inner.VersionedIndexName(), err)
if err := b.refreshIndex(ctx); err != nil {
return err
}
if err := b.doDelete(ctx, repoID); err != nil {
log.Error("Could not delete entries of repo %v within index %v", repoID, b.inner.VersionedIndexName())
return err
}
}
return nil
}

func (b *Indexer) refreshIndex(ctx context.Context) error {
if _, err := b.inner.Client.Refresh(b.inner.VersionedIndexName()).Do(ctx); err != nil {
log.Error("Error while trying to refresh index %v", b.inner.VersionedIndexName(), err)
return err
}

return nil
}

// Delete entries by repoId
func (b *Indexer) doDelete(ctx context.Context, repoID int64) error {
_, err := b.inner.Client.DeleteByQuery(b.inner.VersionedIndexName()).
Query(elastic.NewTermsQuery("repo_id", repoID)).
Do(ctx)
Expand Down