89 lines
2 KiB
Go
89 lines
2 KiB
Go
package blobovnicza
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import (
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"errors"
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"fmt"
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objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
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"go.etcd.io/bbolt"
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)
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// PutPrm groups the parameters of Put operation.
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type PutPrm struct {
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addr *objectSDK.Address
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objData []byte
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}
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// PutRes groups resulting values of Put operation.
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type PutRes struct {
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}
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// ErrFull is returned returned when trying to save an
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// object to a filled blobovnicza.
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var ErrFull = errors.New("blobovnicza is full")
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var errNilAddress = errors.New("object address is nil")
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// SetAddress sets address of saving object.
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func (p *PutPrm) SetAddress(addr *objectSDK.Address) {
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p.addr = addr
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}
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// SetMarshaledObject sets binary representation of the object.
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func (p *PutPrm) SetMarshaledObject(data []byte) {
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p.objData = data
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}
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// Put saves object in Blobovnicza.
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//
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// If binary representation of the object is not set,
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// it is calculated via Marshal method.
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//
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// The size of the object MUST BE less that or equal to
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// the size specified in WithObjectSizeLimit option.
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//
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// Returns any error encountered that
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// did not allow to completely save the object.
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//
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// Returns ErrFull if blobovnicza is filled.
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func (b *Blobovnicza) Put(prm *PutPrm) (*PutRes, error) {
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addr := prm.addr
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if addr == nil {
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return nil, errNilAddress
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}
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err := b.boltDB.Batch(func(tx *bbolt.Tx) error {
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if b.full() {
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return ErrFull
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}
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// calculate size
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sz := uint64(len(prm.objData))
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// get bucket for size
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buck := tx.Bucket(bucketForSize(sz))
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if buck == nil {
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// expected to happen:
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// - before initialization step (incorrect usage by design)
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// - if DB is corrupted (in future this case should be handled)
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return fmt.Errorf("(%T) bucket for size %d not created", b, sz)
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}
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// save the object in bucket
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if err := buck.Put(addressKey(addr), prm.objData); err != nil {
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return fmt.Errorf("(%T) could not save object in bucket: %w", b, err)
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}
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// increase fullness counter
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b.incSize(sz)
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return nil
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})
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return nil, err
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}
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func addressKey(addr *objectSDK.Address) []byte {
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return []byte(addr.String())
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}
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