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This commit is contained in:
2026-05-30 12:07:11 +00:00
commit 616c6b1c62
381 changed files with 55145 additions and 0 deletions
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package settings
import (
"sync"
"server/log"
)
type DBReadCache struct {
db TorrServerDB
listCache map[string][]string
listCacheMutex sync.RWMutex
dataCache map[[2]string][]byte
dataCacheMutex sync.RWMutex
}
func NewDBReadCache(db TorrServerDB) TorrServerDB {
cdb := &DBReadCache{
db: db,
listCache: map[string][]string{},
dataCache: map[[2]string][]byte{},
}
return cdb
}
func (v *DBReadCache) CloseDB() {
v.db.CloseDB()
v.db = nil
v.listCache = nil
v.dataCache = nil
}
func (v *DBReadCache) Get(xPath, name string) []byte {
if v.dataCache == nil {
return nil // или panic, или возвращаем ошибку
}
cacheKey := v.makeDataCacheKey(xPath, name)
v.dataCacheMutex.RLock()
if data, ok := v.dataCache[cacheKey]; ok {
defer v.dataCacheMutex.RUnlock()
return data
}
v.dataCacheMutex.RUnlock()
// Если база данных закрыта, не пытаемся к ней обращаться
if v.db == nil {
return nil
}
data := v.db.Get(xPath, name)
v.dataCacheMutex.Lock()
if v.dataCache != nil { // Двойная проверка
v.dataCache[cacheKey] = data
}
v.dataCacheMutex.Unlock()
return data
}
func (v *DBReadCache) Set(xPath, name string, value []byte) {
if ReadOnly {
if IsDebug() {
log.TLogln("DBReadCache.Set: Read-only DB mode!", name)
}
return
}
// Проверяем, не закрыта ли база
if v.dataCache == nil || v.db == nil {
log.TLogln("DBReadCache.Set: no dataCache or DB is closed, cannot set", name)
return
}
cacheKey := v.makeDataCacheKey(xPath, name)
v.dataCacheMutex.Lock()
if v.dataCache != nil { // Двойная проверка
v.dataCache[cacheKey] = value
}
v.dataCacheMutex.Unlock()
if v.listCache != nil {
delete(v.listCache, xPath)
}
v.db.Set(xPath, name, value)
}
func (v *DBReadCache) List(xPath string) []string {
if v.listCache == nil {
return nil
}
v.listCacheMutex.RLock()
if names, ok := v.listCache[xPath]; ok {
defer v.listCacheMutex.RUnlock()
return names
}
v.listCacheMutex.RUnlock()
// Проверяем, не закрыта ли база
if v.db == nil {
return nil
}
names := v.db.List(xPath)
v.listCacheMutex.Lock()
if v.listCache != nil { // Двойная проверка
v.listCache[xPath] = names
}
v.listCacheMutex.Unlock()
return names
}
func (v *DBReadCache) Rem(xPath, name string) {
if ReadOnly {
if IsDebug() {
log.TLogln("DBReadCache.Rem: Read-only DB mode!", name)
}
return
}
// Проверяем, не закрыта ли база
if v.dataCache == nil || v.db == nil {
log.TLogln("DBReadCache.Rem: no dataCache or DB is closed, cannot remove", name)
return
}
cacheKey := v.makeDataCacheKey(xPath, name)
v.dataCacheMutex.Lock()
if v.dataCache != nil {
delete(v.dataCache, cacheKey)
}
v.dataCacheMutex.Unlock()
if v.listCache != nil {
delete(v.listCache, xPath)
}
v.db.Rem(xPath, name)
}
func (v *DBReadCache) Clear(xPath string) {
if ReadOnly {
if IsDebug() {
log.TLogln("DBReadCache.Clear: Read-only DB mode!", xPath)
}
return
}
// Clear from underlying DB first
if v.db != nil {
v.db.Clear(xPath)
}
// Clear cache
v.listCacheMutex.Lock()
delete(v.listCache, xPath)
v.listCacheMutex.Unlock()
// Clear data cache entries for this xPath
v.dataCacheMutex.Lock()
for key := range v.dataCache {
if key[0] == xPath {
delete(v.dataCache, key)
}
}
v.dataCacheMutex.Unlock()
}
func (v *DBReadCache) makeDataCacheKey(xPath, name string) [2]string {
return [2]string{xPath, name}
}