Fixed copilot suggestions.

api/api.go

@@ -543,8 +543,8 @@ func (h *Handler) handleGetBuckets(w http.ResponseWriter, r *http.Request) {
 	for _, bucket := range buckets {
 		manifest, err := h.svc.GetBucketManifest(bucket)
 		if err != nil {
-			writeMappedS3Error(w, r, err)
-			return
+			h.logger.Warn("bucket_manifest_read_failed", "bucket", bucket, "error", err)
+			continue
 		}
 		response.Buckets.Items = append(response.Buckets.Items, models.BucketItem{
 			Name:         bucket,
@@ -833,6 +833,9 @@ func (h *Handler) Start(ctx context.Context, address string) error {
 		h.logger.Info("shutdown_context_done", "reason", ctx.Err())
 	case err := <-errCh:
 		h.logger.Error("server_listen_failed", "error", err)
+		if closeErr := h.svc.Close(); closeErr != nil {
+			h.logger.Error("service_close_failed", "error", closeErr)
+		}
 		return err
 	}
 

metadata/metadata.go

@@ -604,6 +604,7 @@ func (h *MetadataHandler) AbortMultipartUpload(uploadID string) error {
 
 func (h *MetadataHandler) GetReferencedChunkSet() (map[string]struct{}, error) {
 	chunkSet := make(map[string]struct{})
+	pendingUploadSet := make(map[string]struct{})
 
 	err := h.db.View(func(tx *bbolt.Tx) error {
 		systemIndexBucket := tx.Bucket([]byte(systemIndex))
@@ -632,11 +633,36 @@ func (h *MetadataHandler) GetReferencedChunkSet() (map[string]struct{}, error) {
 			}
 		}
 
+		uploadsBucket := tx.Bucket(multipartUploadIndex)
+		if uploadsBucket == nil {
+			return errors.New("multipart upload index not found")
+		}
+		if err := uploadsBucket.ForEach(func(k, v []byte) error {
+			upload := models.MultipartUpload{}
+			if err := json.Unmarshal(v, &upload); err != nil {
+				return err
+			}
+			if upload.State == "pending" {
+				pendingUploadSet[string(k)] = struct{}{}
+			}
+			return nil
+		}); err != nil {
+			return err
+		}
+
 		partsBucket := tx.Bucket(multipartUploadPartsIndex)
 		if partsBucket == nil {
 			return errors.New("multipart upload parts index not found")
 		}
-		if err := partsBucket.ForEach(func(_, v []byte) error {
+		if err := partsBucket.ForEach(func(k, v []byte) error {
+			uploadID, _, ok := strings.Cut(string(k), ":")
+			if !ok {
+				return nil
+			}
+			if _, pending := pendingUploadSet[uploadID]; !pending {
+				return nil
+			}
+
 			part := models.UploadedPart{}
 			if err := json.Unmarshal(v, &part); err != nil {
 				return err

service/service.go

@@ -67,13 +67,17 @@ func (s *ObjectService) PutObject(bucket, key, contentType string, input io.Read
 }
 
 func (s *ObjectService) GetObject(bucket, key string) (io.ReadCloser, *models.ObjectManifest, error) {
+	s.gcMu.RLock()
+
 	manifest, err := s.metadata.GetManifest(bucket, key)
 	if err != nil {
+		s.gcMu.RUnlock()
 		return nil, nil, err
 	}
 	pr, pw := io.Pipe()
 
 	go func() {
+		defer s.gcMu.RUnlock()
 		if err := s.blob.AssembleStream(manifest.Chunks, pw); err != nil {
 			_ = pw.CloseWithError(err)
 			return
@@ -84,6 +88,9 @@ func (s *ObjectService) GetObject(bucket, key string) (io.ReadCloser, *models.Ob
 }
 
 func (s *ObjectService) HeadObject(bucket, key string) (models.ObjectManifest, error) {
+	s.gcMu.RLock()
+	defer s.gcMu.RUnlock()
+
 	manifest, err := s.metadata.GetManifest(bucket, key)
 	if err != nil {
 		return models.ObjectManifest{}, err
@@ -98,6 +105,9 @@ func (s *ObjectService) DeleteObject(bucket, key string) error {
 }
 
 func (s *ObjectService) ListObjects(bucket, prefix string) ([]*models.ObjectManifest, error) {
+	s.gcMu.RLock()
+	defer s.gcMu.RUnlock()
+
 	return s.metadata.ListObjects(bucket, prefix)
 }
 
@@ -108,11 +118,17 @@ func (s *ObjectService) CreateBucket(bucket string) error {
 }
 
 func (s *ObjectService) HeadBucket(bucket string) error {
+	s.gcMu.RLock()
+	defer s.gcMu.RUnlock()
+
 	_, err := s.metadata.GetBucketManifest(bucket)
 	return err
 }
 
 func (s *ObjectService) GetBucketManifest(bucket string) (*models.BucketManifest, error) {
+	s.gcMu.RLock()
+	defer s.gcMu.RUnlock()
+
 	return s.metadata.GetBucketManifest(bucket)
 }
 
@@ -123,6 +139,9 @@ func (s *ObjectService) DeleteBucket(bucket string) error {
 }
 
 func (s *ObjectService) ListBuckets() ([]string, error) {
+	s.gcMu.RLock()
+	defer s.gcMu.RUnlock()
+
 	return s.metadata.ListBuckets()
 }
 
@@ -174,6 +193,9 @@ func (s *ObjectService) UploadPart(bucket, key, uploadId string, partNumber int,
 }
 
 func (s *ObjectService) ListMultipartParts(bucket, key, uploadID string) ([]models.UploadedPart, error) {
+	s.gcMu.RLock()
+	defer s.gcMu.RUnlock()
+
 	upload, err := s.metadata.GetMultipartUpload(uploadID)
 	if err != nil {
 		return nil, err
@@ -300,6 +322,7 @@ func (s *ObjectService) GarbageCollect() error {
 
 	totalChunks := 0
 	deletedChunks := 0
+	deleteErrors := 0
 
 	if err := s.blob.ForEachChunk(func(chunkID string) error {
 		totalChunks++
@@ -307,7 +330,9 @@ func (s *ObjectService) GarbageCollect() error {
 			return nil
 		}
 		if err := s.blob.DeleteBlob(chunkID); err != nil {
-			return err
+			deleteErrors++
+			slog.Warn("garbage_collect_delete_failed", "chunk_id", chunkID, "error", err)
+			return nil
 		}
 		deletedChunks++
 		return nil
@@ -319,6 +344,7 @@ func (s *ObjectService) GarbageCollect() error {
 		"referenced_chunks", len(referencedChunkSet),
 		"total_chunks", totalChunks,
 		"deleted_chunks", deletedChunks,
+		"delete_errors", deleteErrors,
 	)
 	return nil
 }

storage/blob.go

@@ -155,7 +155,11 @@ func (bs *BlobStore) DeleteBlob(chunkID string) error {
 	if !isValidChunkID(chunkID) {
 		return fmt.Errorf("invalid chunk id: %q", chunkID)
 	}
-	return os.Remove(filepath.Join(bs.dataRoot, blobRoot, chunkID[:2], chunkID[2:4], chunkID))
+	err := os.Remove(filepath.Join(bs.dataRoot, blobRoot, chunkID[:2], chunkID[2:4], chunkID))
+	if err != nil && os.IsNotExist(err) {
+		return nil
+	}
+	return err
 }
 
 func (bs *BlobStore) ListChunks() ([]string, error) {