package downloader import ( "net/http" "strconv" "time" "github.com/nspcc-dev/neofs-http-gw/response" "github.com/nspcc-dev/neofs-http-gw/tokens" "github.com/nspcc-dev/neofs-sdk-go/client" "github.com/nspcc-dev/neofs-sdk-go/object" "github.com/nspcc-dev/neofs-sdk-go/pool" "github.com/valyala/fasthttp" "go.uber.org/zap" ) const sizeToDetectType = 512 func (r request) headObject(clnt pool.Object, objectAddress *object.Address) { var start = time.Now() if err := tokens.StoreBearerToken(r.RequestCtx); err != nil { r.log.Error("could not fetch and store bearer token", zap.Error(err)) response.Error(r.RequestCtx, "could not fetch and store bearer token", fasthttp.StatusBadRequest) return } options := new(client.ObjectHeaderParams).WithAddress(objectAddress) bearerOpt := bearerOpts(r.RequestCtx) obj, err := clnt.GetObjectHeader(r.RequestCtx, options, bearerOpt) if err != nil { r.handleNeoFSErr(err, start) return } r.Response.Header.Set("Content-Length", strconv.FormatUint(obj.PayloadSize(), 10)) var contentType string for _, attr := range obj.Attributes() { key := attr.Key() val := attr.Value() if !isValidToken(key) || !isValidValue(val) { continue } r.Response.Header.Set("X-Attribute-"+key, val) switch key { case object.AttributeTimestamp: value, err := strconv.ParseInt(val, 10, 64) if err != nil { r.log.Info("couldn't parse creation date", zap.String("key", key), zap.String("val", val), zap.Error(err)) continue } r.Response.Header.Set("Last-Modified", time.Unix(value, 0).UTC().Format(http.TimeFormat)) case object.AttributeContentType: contentType = val } } r.Response.Header.Set("x-object-id", obj.ID().String()) r.Response.Header.Set("x-owner-id", obj.OwnerID().String()) r.Response.Header.Set("x-container-id", obj.ContainerID().String()) if len(contentType) == 0 { objRange := object.NewRange() objRange.SetOffset(0) if sizeToDetectType < obj.PayloadSize() { objRange.SetLength(sizeToDetectType) } else { objRange.SetLength(obj.PayloadSize()) } ops := new(client.RangeDataParams).WithAddress(objectAddress).WithRange(objRange) data, err := clnt.ObjectPayloadRangeData(r.RequestCtx, ops, bearerOpt) if err != nil { r.handleNeoFSErr(err, start) return } contentType = http.DetectContentType(data) } r.SetContentType(contentType) } // HeadByAddress handles head requests using simple cid/oid format. func (d *Downloader) HeadByAddress(c *fasthttp.RequestCtx) { d.byAddress(c, request.headObject) } // HeadByAttribute handles attribute-based head requests. func (d *Downloader) HeadByAttribute(c *fasthttp.RequestCtx) { d.byAttribute(c, request.headObject) }