package object import ( "io" "strconv" "github.com/nspcc-dev/neofs-api-go/session" "github.com/pkg/errors" ) // FilenameHeader is a user header key for names of files, stored by third // party apps. We recommend to use this header to be compatible with neofs // http gate, neofs minio gate and neofs-dropper application. const FilenameHeader = "filename" // ByteSize used to format bytes type ByteSize uint64 // String represents ByteSize in string format func (b ByteSize) String() string { var ( dec int64 unit string num = int64(b) ) switch { case num > UnitsTB: unit = "TB" dec = UnitsTB case num > UnitsGB: unit = "GB" dec = UnitsGB case num > UnitsMB: unit = "MB" dec = UnitsMB case num > UnitsKB: unit = "KB" dec = UnitsKB default: dec = 1 } return strconv.FormatFloat(float64(num)/float64(dec), 'g', 6, 64) + unit } // MakePutRequestHeader combines object and session token value // into header of object put request. func MakePutRequestHeader(obj *Object, token *session.Token) *PutRequest { return &PutRequest{ R: &PutRequest_Header{Header: &PutRequest_PutHeader{ Object: obj, Token: token, }}, } } // MakePutRequestChunk splits data into chunks that will be transferred // in the protobuf stream. func MakePutRequestChunk(chunk []byte) *PutRequest { return &PutRequest{R: &PutRequest_Chunk{Chunk: chunk}} } func errMaxSizeExceeded(size uint64) error { return errors.Errorf("object payload size exceed: %s", ByteSize(size).String()) } // ReceiveGetResponse receives object by chunks from the protobuf stream // and combine it into single get response structure. func ReceiveGetResponse(c Service_GetClient, maxSize uint64) (*GetResponse, error) { res, err := c.Recv() if err == io.EOF { return res, err } else if err != nil { return nil, err } obj := res.GetObject() if obj == nil { return nil, ErrHeaderExpected } if obj.SystemHeader.PayloadLength > maxSize { return nil, errMaxSizeExceeded(maxSize) } if res.NotFull() { payload := make([]byte, obj.SystemHeader.PayloadLength) offset := copy(payload, obj.Payload) var r *GetResponse for r, err = c.Recv(); err == nil; r, err = c.Recv() { offset += copy(payload[offset:], r.GetChunk()) } if err != io.EOF { return nil, err } obj.Payload = payload } return res, nil }