mirror of
https://github.com/usememos/memos.git
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122 lines
2.5 KiB
Go
122 lines
2.5 KiB
Go
package store
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import (
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"context"
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"database/sql"
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"sync"
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"modernc.org/sqlite"
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"github.com/pkg/errors"
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"github.com/usememos/memos/server/profile"
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)
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// Store provides database access to all raw objects.
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type Store struct {
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Profile *profile.Profile
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db *sql.DB
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systemSettingCache sync.Map // map[string]*SystemSetting
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userCache sync.Map // map[int]*User
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userSettingCache sync.Map // map[string]*UserSetting
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idpCache sync.Map // map[int]*IdentityProvider
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}
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// New creates a new instance of Store.
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func New(db *sql.DB, profile *profile.Profile) *Store {
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return &Store{
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Profile: profile,
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db: db,
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}
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}
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func (s *Store) GetDB() *sql.DB {
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return s.db
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}
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func (s *Store) BackupTo(ctx context.Context, filename string) error {
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conn, err := s.db.Conn(ctx)
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if err != nil {
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return errors.Errorf("fail to get conn %s", err)
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}
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defer conn.Close()
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err = conn.Raw(func(driverConn any) error {
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type backuper interface {
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NewBackup(string) (*sqlite.Backup, error)
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}
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backupConn, ok := driverConn.(backuper)
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if !ok {
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return errors.Errorf("db connection is not a sqlite backuper")
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}
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bck, err := backupConn.NewBackup(filename)
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if err != nil {
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return errors.Errorf("fail to create sqlite backup %s", err)
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}
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for more := true; more; {
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more, err = bck.Step(-1)
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if err != nil {
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return errors.Errorf("fail to execute sqlite backup %s", err)
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}
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}
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return bck.Finish()
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})
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if err != nil {
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return errors.Errorf("fail to backup %s", err)
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}
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return nil
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}
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func (s *Store) Vacuum(ctx context.Context) error {
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tx, err := s.db.BeginTx(ctx, nil)
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if err != nil {
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return err
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}
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defer tx.Rollback()
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if err := s.vacuumImpl(ctx, tx); err != nil {
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return err
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}
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if err := tx.Commit(); err != nil {
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return err
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}
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// Vacuum sqlite database file size after deleting resource.
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if _, err := s.db.Exec("VACUUM"); err != nil {
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return err
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}
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return nil
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}
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func (*Store) vacuumImpl(ctx context.Context, tx *sql.Tx) error {
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if err := vacuumMemo(ctx, tx); err != nil {
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return err
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}
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if err := vacuumResource(ctx, tx); err != nil {
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return err
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}
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if err := vacuumUserSetting(ctx, tx); err != nil {
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return err
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}
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if err := vacuumMemoOrganizer(ctx, tx); err != nil {
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return err
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}
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if err := vacuumMemoResource(ctx, tx); err != nil {
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return err
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}
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if err := vacuumMemoRelations(ctx, tx); err != nil {
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return err
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}
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if err := vacuumTag(ctx, tx); err != nil {
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// Prevent revive warning.
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return err
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}
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return nil
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}
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