eaae5a5dd7
In previous implementation Blobovnicza's stored objects in protocol format which did not allow working with externally compressed objects. To achieve this goal, operations Get and Put no longer work with the structure of the object, but only with abstract binary data. Operation GetRange has become incorrect in its original purpose to receive the payload range. In this regard, BlobStor receives the payload range of the object through Get operation. In the future either Blobovnicza will learn to compress objects by itself, or the GetRange operation will be eliminated. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package blobovnicza
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import (
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objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
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"github.com/nspcc-dev/neofs-node/pkg/core/object"
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"go.etcd.io/bbolt"
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"go.uber.org/zap"
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)
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// GetPrm groups the parameters of Get operation.
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type GetPrm struct {
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addr *objectSDK.Address
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}
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// GetRes groups resulting values of Get operation.
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type GetRes struct {
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obj []byte
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}
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// SetAddress sets address of the requested object.
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func (p *GetPrm) SetAddress(addr *objectSDK.Address) {
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p.addr = addr
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}
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// Object returns binary representation of the requested object.
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func (p *GetRes) Object() []byte {
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return p.obj
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}
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// Get reads the object from Blobovnicza by address.
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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.
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//
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// Returns ErrNotFound if requested object is not
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// presented in Blobovnicza.
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func (b *Blobovnicza) Get(prm *GetPrm) (*GetRes, error) {
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var (
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data []byte
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addrKey = addressKey(prm.addr)
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)
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if err := b.boltDB.View(func(tx *bbolt.Tx) error {
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return b.iterateBuckets(tx, func(lower, upper uint64, buck *bbolt.Bucket) (bool, error) {
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data = buck.Get(addrKey)
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stop := data != nil
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if stop {
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b.log.Debug("object is found in bucket",
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zap.String("binary size", stringifyByteSize(uint64(len(data)))),
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zap.String("range", stringifyBounds(lower, upper)),
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)
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}
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return stop, nil
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})
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}); err != nil {
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return nil, err
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}
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if data == nil {
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return nil, object.ErrNotFound
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}
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return &GetRes{
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obj: data,
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}, nil
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}
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