forked from TrueCloudLab/frostfs-node
36 lines
804 B
Go
36 lines
804 B
Go
package rangesvc
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import (
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"io"
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"github.com/nspcc-dev/neofs-api-go/pkg/object"
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"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/localstore"
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"github.com/pkg/errors"
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)
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type localRangeWriter struct {
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addr *object.Address
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rng *object.Range
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storage *localstore.Storage
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}
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func (l *localRangeWriter) WriteTo(w io.Writer) (int64, error) {
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obj, err := l.storage.Get(l.addr)
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if err != nil {
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return 0, errors.Wrapf(err, "(%T) could not get object from local storage", l)
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}
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payload := obj.Payload()
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left := l.rng.GetOffset()
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right := left + l.rng.GetLength()
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if ln := uint64(len(payload)); ln < right {
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return 0, errors.Errorf("(%T) object range is out-of-boundaries (size %d, range [%d:%d]", l, ln, left, right)
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}
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n, err := w.Write(payload[left:right])
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return int64(n), err
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}
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