vspd/database/upgrade_v3.go
2024-02-16 08:47:03 +08:00

107 lines
2.6 KiB
Go

// Copyright (c) 2021-2024 The Decred developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package database
import (
"encoding/json"
"fmt"
"github.com/decred/slog"
bolt "go.etcd.io/bbolt"
)
func ticketBucketUpgrade(db *bolt.DB, log slog.Logger) error {
log.Infof("Upgrading database to version %d", ticketBucketVersion)
// Run the upgrade in a single database transaction so it can be safely
// rolled back if an error is encountered.
err := db.Update(func(tx *bolt.Tx) error {
vspBkt := tx.Bucket(vspBktK)
ticketBkt := vspBkt.Bucket(ticketBktK)
// Count tickets so migration progress can be logged.
todo := 0
err := ticketBkt.ForEach(func(_, _ []byte) error {
todo++
return nil
})
if err != nil {
return fmt.Errorf("could not count tickets: %w", err)
}
done := 0
const batchSize = 2000
err = ticketBkt.ForEach(func(k, v []byte) error {
// Deserialize the old ticket.
var ticket v1Ticket
err := json.Unmarshal(v, &ticket)
if err != nil {
return fmt.Errorf("could not unmarshal ticket: %w", err)
}
// Delete the old ticket.
err = ticketBkt.Delete(k)
if err != nil {
return fmt.Errorf("could not delete ticket: %w", err)
}
// Insert the new ticket.
newBkt, err := ticketBkt.CreateBucket(k)
if err != nil {
return fmt.Errorf("could not create new ticket bucket: %w", err)
}
err = putTicketInBucket(newBkt, Ticket{
Hash: ticket.Hash,
PurchaseHeight: ticket.PurchaseHeight,
CommitmentAddress: ticket.CommitmentAddress,
FeeAddressIndex: ticket.FeeAddressIndex,
FeeAddress: ticket.FeeAddress,
FeeAmount: ticket.FeeAmount,
FeeExpiration: ticket.FeeExpiration,
Confirmed: ticket.Confirmed,
VotingWIF: ticket.VotingWIF,
VoteChoices: ticket.VoteChoices,
FeeTxHex: ticket.FeeTxHex,
FeeTxHash: ticket.FeeTxHash,
FeeTxStatus: ticket.FeeTxStatus,
Outcome: ticket.Outcome,
})
if err != nil {
return fmt.Errorf("could not put new ticket in bucket: %w", err)
}
done++
if done%batchSize == 0 {
log.Infof("Migrated %d/%d tickets", done, todo)
}
return nil
})
if err != nil {
return err
}
if done > 0 && done%batchSize != 0 {
log.Infof("Migrated %d/%d tickets", done, todo)
}
// Update database version.
err = vspBkt.Put(versionK, uint32ToBytes(ticketBucketVersion))
if err != nil {
return fmt.Errorf("failed to update db version: %w", err)
}
return nil
})
if err != nil {
return err
}
log.Info("Upgrade completed")
return nil
}