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rollback.go
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/
rollback.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package kvledger
import (
"github.com/hyperledger/fabric/common/ledger/util/leveldbhelper"
"github.com/hyperledger/fabric/core/ledger/ledgerstorage"
"github.com/pkg/errors"
)
// RollbackKVLedger rollbacks a ledger to a specified block number
func RollbackKVLedger(rootFSPath, ledgerID string, blockNum uint64) error {
fileLockPath := fileLockPath(rootFSPath)
fileLock := leveldbhelper.NewFileLock(fileLockPath)
if err := fileLock.Lock(); err != nil {
return errors.Wrap(err, "as another peer node command is executing,"+
" wait for that command to complete its execution or terminate it before retrying")
}
defer fileLock.Unlock()
blockstorePath := BlockStorePath(rootFSPath)
if err := ledgerstorage.ValidateRollbackParams(blockstorePath, ledgerID, blockNum); err != nil {
return err
}
logger.Infof("Dropping databases")
if err := dropDBs(rootFSPath); err != nil {
return err
}
logger.Info("Rolling back ledger store")
if err := ledgerstorage.Rollback(blockstorePath, ledgerID, blockNum); err != nil {
return err
}
logger.Infof("The channel [%s] has been successfully rolled back to the block number [%d]", ledgerID, blockNum)
return nil
}