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https://github.com/syncthing/syncthing.git
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cf1cf85ce6
This changes the database structure to use one database per folder, with a small main database to coordinate. Reverts the prior change to buffer all files in memory when pulling, meaning there is now a phase where the WAL file will grow significantly, at least for initial sync of folders with many directories. --------- Co-authored-by: bt90 <btom1990@googlemail.com>
79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
// Copyright (C) 2025 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package sqlite
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import (
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"iter"
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"github.com/jmoiron/sqlx"
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"github.com/syncthing/syncthing/internal/db"
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)
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func (s *baseDB) GetKV(key string) ([]byte, error) {
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var val []byte
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if err := s.stmt(`
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SELECT value FROM kv
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WHERE key = ?
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`).Get(&val, key); err != nil {
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return nil, wrap(err)
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}
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return val, nil
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}
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func (s *baseDB) PutKV(key string, val []byte) error {
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s.updateLock.Lock()
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defer s.updateLock.Unlock()
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_, err := s.stmt(`
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INSERT OR REPLACE INTO kv (key, value)
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VALUES (?, ?)
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`).Exec(key, val)
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return wrap(err)
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}
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func (s *baseDB) DeleteKV(key string) error {
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s.updateLock.Lock()
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defer s.updateLock.Unlock()
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_, err := s.stmt(`
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DELETE FROM kv WHERE key = ?
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`).Exec(key)
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return wrap(err)
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}
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func (s *baseDB) PrefixKV(prefix string) (iter.Seq[db.KeyValue], func() error) {
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var rows *sqlx.Rows
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var err error
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if prefix == "" {
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rows, err = s.stmt(`SELECT key, value FROM kv`).Queryx()
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} else {
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end := prefixEnd(prefix)
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rows, err = s.stmt(`
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SELECT key, value FROM kv
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WHERE key >= ? AND key < ?
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`).Queryx(prefix, end)
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}
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if err != nil {
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return func(_ func(db.KeyValue) bool) {}, func() error { return err }
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}
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return func(yield func(db.KeyValue) bool) {
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defer rows.Close()
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for rows.Next() {
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var key string
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var val []byte
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if err = rows.Scan(&key, &val); err != nil {
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return
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}
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if !yield(db.KeyValue{Key: key, Value: val}) {
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return
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}
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}
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err = rows.Err()
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}, func() error {
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return err
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}
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}
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