Re-attempt to delete temporary upload if the file is locked by another process (#12447)

Replace all calls to os.Remove/os.RemoveAll by retrying util.Remove/util.RemoveAll and remove circular dependencies from util.

Fix #12339

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: silverwind <me@silverwind.io>

modules/indexer/code/bleve.go

@@ -19,6 +19,7 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/timeutil"
+	"code.gitea.io/gitea/modules/util"
 
 	"github.com/blevesearch/bleve"
 	analyzer_custom "github.com/blevesearch/bleve/analysis/analyzer/custom"
@@ -75,14 +76,14 @@ func openIndexer(path string, latestVersion int) (bleve.Index, error) {
 	if metadata.Version < latestVersion {
 		// the indexer is using a previous version, so we should delete it and
 		// re-populate
-		return nil, os.RemoveAll(path)
+		return nil, util.RemoveAll(path)
 	}
 
 	index, err := bleve.Open(path)
 	if err != nil && err == upsidedown.IncompatibleVersion {
 		// the indexer was built with a previous version of bleve, so we should
 		// delete it and re-populate
-		return nil, os.RemoveAll(path)
+		return nil, util.RemoveAll(path)
 	} else if err != nil {
 		return nil, err
 	}

modules/indexer/code/bleve_test.go

@@ -6,12 +6,12 @@ package code
 
 import (
 	"io/ioutil"
-	"os"
 	"path/filepath"
 	"testing"
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -29,7 +29,7 @@ func TestIndexAndSearch(t *testing.T) {
 		assert.Fail(t, "Unable to create temporary directory")
 		return
 	}
-	defer os.RemoveAll(dir)
+	defer util.RemoveAll(dir)
 
 	setting.Indexer.RepoIndexerEnabled = true
 	idx, _, err := NewBleveIndexer(dir)