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databatch.go
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databatch.go
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package sqlite
import (
"database/sql"
"sync"
)
// Ensure dataBatch implement DataStore interface
var _ DataBatch = (*dataBatch)(nil)
type dataBatch struct {
*sync.RWMutex
*sql.Tx
}
func (d *dataBatch) Addrs() AddrsBatch {
d.Lock()
defer d.Unlock()
return &addrsBatch{
RWMutex: d.RWMutex,
Tx: d.Tx,
}
}
func (d *dataBatch) Txs() TxsBatch {
d.Lock()
defer d.Unlock()
return &txsBatch{
RWMutex: d.RWMutex,
Tx: d.Tx,
}
}
func (d *dataBatch) UTXOs() UTXOsBatch {
d.Lock()
defer d.Unlock()
return &utxosBatch{
RWMutex: d.RWMutex,
Tx: d.Tx,
}
}
func (d *dataBatch) STXOs() STXOsBatch {
d.Lock()
defer d.Unlock()
return &stxosBatch{
RWMutex: d.RWMutex,
Tx: d.Tx,
}
}
func (d *dataBatch) RollbackHeight(height uint32) error {
d.Lock()
defer d.Unlock()
// Rollback UTXOs
_, err := d.Exec("DELETE FROM UTXOs WHERE AtHeight=?", height)
if err != nil {
return err
}
// Rollback STXOs, move UTXOs back first, then delete the STXOs
_, err = d.Exec(`INSERT OR REPLACE INTO UTXOs(OutPoint, Value, LockTime, AtHeight, Address)
SELECT OutPoint, Value, LockTime, AtHeight, Address FROM STXOs WHERE SpendHeight=?`, height)
if err != nil {
return err
}
_, err = d.Exec("DELETE FROM STXOs WHERE SpendHeight=?", height)
if err != nil {
return err
}
// Rollback TXNs
_, err = d.Exec("DELETE FROM TXNs WHERE Height=?", height)
return err
}