55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package blobstor
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import (
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"github.com/nspcc-dev/neofs-node/pkg/core/object"
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"github.com/pkg/errors"
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)
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// GetRangeBigPrm groups the parameters of GetRangeBig operation.
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type GetRangeBigPrm struct {
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address
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rwRange
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}
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// GetRangeBigRes groups resulting values of GetRangeBig operation.
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type GetRangeBigRes struct {
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rangeData
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}
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// GetRangeBig reads data of object payload range from shallow dir of BLOB storage.
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//
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// Returns any error encountered that
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// did not allow to completely read the object payload range.
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func (b *BlobStor) GetRangeBig(prm *GetRangeBigPrm) (*GetRangeBigRes, error) {
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// get compressed object data
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data, err := b.fsTree.get(prm.addr)
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if err != nil {
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return nil, errors.Wrap(err, "could not read object from fs tree")
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}
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data, err = b.decompressor(data)
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if err != nil {
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return nil, errors.Wrap(err, "could not decompress object data")
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}
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// unmarshal the object
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obj := object.New()
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if err := obj.Unmarshal(data); err != nil {
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return nil, errors.Wrap(err, "could not unmarshal the object")
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}
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payload := obj.Payload()
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ln, off := prm.rng.GetLength(), prm.rng.GetOffset()
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if pLen := uint64(len(payload)); pLen < ln+off {
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return nil, errors.Errorf("range is out-of-bounds (payload %d, off %d, ln %d)",
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pLen, off, ln)
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}
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return &GetRangeBigRes{
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rangeData: rangeData{
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data: payload[off : off+ln],
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},
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}, nil
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}
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