e05ced391a
- Updating and adding some copyrights which were missed recently. - Slight improvements to some commenting and naming.
91 lines
2.0 KiB
Go
91 lines
2.0 KiB
Go
// Copyright (c) 2021 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package database
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import (
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"encoding/json"
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"fmt"
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bolt "go.etcd.io/bbolt"
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)
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func ticketBucketUpgrade(db *bolt.DB) error {
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log.Infof("Upgrading database to version %d", ticketBucketVersion)
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// Run the upgrade in a single database transaction so it can be safely
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// rolled back if an error is encountered.
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err := db.Update(func(tx *bolt.Tx) error {
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vspBkt := tx.Bucket(vspBktK)
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ticketBkt := vspBkt.Bucket(ticketBktK)
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// Count tickets so migration progress can be logged.
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todo := 0
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err := ticketBkt.ForEach(func(k, v []byte) error {
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todo++
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return nil
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})
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if err != nil {
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return fmt.Errorf("could not count tickets: %w", err)
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}
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done := 0
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const batchSize = 2000
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err = ticketBkt.ForEach(func(k, v []byte) error {
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// Deserialize the old ticket.
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var ticket v1Ticket
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err := json.Unmarshal(v, &ticket)
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if err != nil {
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return fmt.Errorf("could not unmarshal ticket: %w", err)
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}
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// Delete the old ticket.
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err = ticketBkt.Delete(k)
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if err != nil {
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return fmt.Errorf("could not delete ticket: %w", err)
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}
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// Insert the new ticket.
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newBkt, err := ticketBkt.CreateBucket(k)
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if err != nil {
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return fmt.Errorf("could not create new ticket bucket: %w", err)
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}
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err = putTicketInBucket(newBkt, Ticket(ticket))
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if err != nil {
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return fmt.Errorf("could not put new ticket in bucket: %w", err)
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}
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done++
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if done%batchSize == 0 {
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log.Infof("Migrated %d/%d tickets", done, todo)
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}
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return nil
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})
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if err != nil {
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return err
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}
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if done > 0 && done%batchSize != 0 {
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log.Infof("Migrated %d/%d tickets", done, todo)
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}
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// Update database version.
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err = vspBkt.Put(versionK, uint32ToBytes(ticketBucketVersion))
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if err != nil {
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return fmt.Errorf("failed to update db version: %w", err)
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}
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return nil
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})
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if err != nil {
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return err
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}
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log.Info("Upgrade completed")
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return nil
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}
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