68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
package blobstor
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import (
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"errors"
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"fmt"
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"github.com/nspcc-dev/neofs-node/pkg/core/object"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
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apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
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objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
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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 the 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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//
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// Returns ErrRangeOutOfBounds if the requested object range is out of bounds.
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// Returns an error of type apistatus.ObjectNotFound if object is missing.
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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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if errors.Is(err, fstree.ErrFileNotFound) {
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var errNotFound apistatus.ObjectNotFound
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return nil, errNotFound
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}
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return nil, fmt.Errorf("could not read object from fs tree: %w", err)
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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, fmt.Errorf("could not decompress object data: %w", err)
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}
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// unmarshal the object
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obj := objectSDK.New()
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if err := obj.Unmarshal(data); err != nil {
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return nil, fmt.Errorf("could not unmarshal the object: %w", err)
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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, object.ErrRangeOutOfBounds
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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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