package handler import ( "bytes" "net/http" "github.com/nspcc-dev/neofs-s3-gw/api" "github.com/nspcc-dev/neofs-s3-gw/api/layer" "go.uber.org/zap" ) const sizeToDetectType = 512 func getRangeToDetectContentType(maxSize int64) *layer.RangeParams { end := uint64(maxSize) if sizeToDetectType < end { end = sizeToDetectType } return &layer.RangeParams{ Start: 0, End: end - 1, } } func (h *handler) HeadObjectHandler(w http.ResponseWriter, r *http.Request) { var ( err error inf *layer.ObjectInfo reqInfo = api.GetReqInfo(r.Context()) ) if inf, err = h.obj.GetObjectInfo(r.Context(), reqInfo.BucketName, reqInfo.ObjectName); err != nil { h.logAndSendError(w, "could not fetch object info", reqInfo, err) return } buffer := bytes.NewBuffer(make([]byte, 0, sizeToDetectType)) getParams := &layer.GetObjectParams{ Bucket: inf.Bucket, Object: inf.Name, Writer: buffer, Range: getRangeToDetectContentType(inf.Size), } if err = h.obj.GetObject(r.Context(), getParams); err != nil { h.logAndSendError(w, "could not get object", reqInfo, err, zap.Stringer("oid", inf.ID())) return } inf.ContentType = http.DetectContentType(buffer.Bytes()) writeHeaders(w.Header(), inf) w.WriteHeader(http.StatusOK) } func (h *handler) HeadBucketHandler(w http.ResponseWriter, r *http.Request) { reqInfo := api.GetReqInfo(r.Context()) bktInfo, err := h.obj.GetBucketInfo(r.Context(), reqInfo.BucketName) if err != nil { h.logAndSendError(w, "could not fetch object info", reqInfo, err) return } w.Header().Set(api.ContainerID, bktInfo.CID.String()) api.WriteResponse(w, http.StatusOK, nil, api.MimeNone) }