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stor_registry.go
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/
stor_registry.go
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package dropbag
import (
"fmt"
"github.com/insolar/assured-ledger/ledger-core/drafts/dropbag/dbcommon"
"github.com/insolar/assured-ledger/ledger-core/drafts/dropbag/dbsv1"
)
func OpenReadStorage(sr dbcommon.StorageSeqReader, config dbcommon.ReadConfig, payloadFactory dbcommon.PayloadFactory) (dbcommon.PayloadBuilder, error) {
f, opt, err := dbcommon.ReadFormatAndOptions(sr)
if err != nil {
return nil, err
}
var pb dbcommon.PayloadBuilder
switch f {
case 1:
pb, err = dbsv1.OpenReadStorage(sr, payloadFactory, config, opt)
default:
return nil, fmt.Errorf("unknown storage format: format%x", f)
}
if pb == nil {
if err != nil {
return nil, err
}
return nil, fmt.Errorf("failed to read storage: format=%x", f)
}
if err == nil {
err = pb.Finished()
}
if err != nil {
err = pb.Failed(err)
}
return pb, err
}
func OpenWriteStorage(sw dbcommon.StorageSeqWriter, f dbcommon.FileFormat, options dbcommon.FormatOptions) (dbcommon.PayloadWriter, error) {
var pw dbcommon.PayloadWriter
var err error
switch f {
case 1:
pw, err = dbsv1.PrepareWriteStorage(sw, options)
default:
return nil, fmt.Errorf("unknown storage format: format%x", f)
}
if pw == nil {
if err != nil {
return nil, err
}
return nil, fmt.Errorf("failed to write storage: format=%x", f)
}
if err != nil {
_ = pw.Close()
return nil, err
}
if err := dbcommon.WriteFormatAndOptions(sw, f, options); err != nil {
_ = pw.Close()
return nil, err
}
return pw, nil
}