mirror of
https://github.com/router-for-me/CLIProxyAPI.git
synced 2026-02-28 15:53:30 +08:00
2fdf5d2793
Default to generating a fresh random user_id per request instead of reusing cached IDs. Add cache-user-id config option to opt in to the previous caching behavior. - Add CacheUserID field to CloakConfig - Extract user_id cache logic to dedicated file - Generate fresh user_id by default, cache only when enabled - Add tests for both paths
90 lines
1.8 KiB
Go
90 lines
1.8 KiB
Go
package executor
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import (
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"crypto/sha256"
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"encoding/hex"
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"sync"
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"time"
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)
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type userIDCacheEntry struct {
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value string
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expire time.Time
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}
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var (
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userIDCache = make(map[string]userIDCacheEntry)
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userIDCacheMu sync.RWMutex
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userIDCacheCleanupOnce sync.Once
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)
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const (
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userIDTTL = time.Hour
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userIDCacheCleanupPeriod = 15 * time.Minute
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)
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func startUserIDCacheCleanup() {
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go func() {
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ticker := time.NewTicker(userIDCacheCleanupPeriod)
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defer ticker.Stop()
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for range ticker.C {
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purgeExpiredUserIDs()
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}
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}()
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}
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func purgeExpiredUserIDs() {
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now := time.Now()
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userIDCacheMu.Lock()
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for key, entry := range userIDCache {
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if !entry.expire.After(now) {
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delete(userIDCache, key)
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}
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}
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userIDCacheMu.Unlock()
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}
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func userIDCacheKey(apiKey string) string {
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sum := sha256.Sum256([]byte(apiKey))
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return hex.EncodeToString(sum[:])
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}
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func cachedUserID(apiKey string) string {
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if apiKey == "" {
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return generateFakeUserID()
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}
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userIDCacheCleanupOnce.Do(startUserIDCacheCleanup)
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key := userIDCacheKey(apiKey)
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now := time.Now()
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userIDCacheMu.RLock()
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entry, ok := userIDCache[key]
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valid := ok && entry.value != "" && entry.expire.After(now) && isValidUserID(entry.value)
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userIDCacheMu.RUnlock()
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if valid {
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userIDCacheMu.Lock()
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entry = userIDCache[key]
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if entry.value != "" && entry.expire.After(now) && isValidUserID(entry.value) {
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entry.expire = now.Add(userIDTTL)
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userIDCache[key] = entry
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userIDCacheMu.Unlock()
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return entry.value
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}
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userIDCacheMu.Unlock()
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}
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newID := generateFakeUserID()
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userIDCacheMu.Lock()
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entry, ok = userIDCache[key]
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if !ok || entry.value == "" || !entry.expire.After(now) || !isValidUserID(entry.value) {
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entry.value = newID
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}
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entry.expire = now.Add(userIDTTL)
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userIDCache[key] = entry
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userIDCacheMu.Unlock()
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return entry.value
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}
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