mirror of
https://github.com/woodchen-ink/webp_server_go.git
synced 2025-07-18 05:32:02 +08:00
114 lines
2.7 KiB
Go
114 lines
2.7 KiB
Go
package schedule
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import (
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"os"
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"path/filepath"
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"time"
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"webp_server_go/config"
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log "github.com/sirupsen/logrus"
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)
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func getDirSize(path string) (int64, error) {
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// Check if path is a directory and exists
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if _, err := os.Stat(path); os.IsNotExist(err) {
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return 0, nil
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}
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var size int64
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err := filepath.Walk(path, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if !info.IsDir() {
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size += info.Size()
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}
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return nil
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})
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return size, err
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}
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// Delete the oldest file in the given path
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func clearDirForOldestFiles(path string) error {
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oldestFile := ""
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oldestModTime := time.Now()
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err := filepath.Walk(path, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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log.Errorf("Error accessing path %s: %s\n", path, err.Error())
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return nil
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}
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if !info.IsDir() && info.ModTime().Before(oldestModTime) {
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oldestFile = path
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oldestModTime = info.ModTime()
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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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log.Errorf("Error traversing directory: %s\n", err.Error())
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return err
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}
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if oldestFile != "" {
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err := os.Remove(oldestFile)
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if err != nil {
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log.Errorf("Error deleting file %s: %s\n", oldestFile, err.Error())
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return err
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}
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log.Infof("Deleted oldest file: %s\n", oldestFile)
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} else {
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log.Infoln("No files found in the directory.")
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}
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return nil
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}
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// Clear cache, size is in bytes that needs to be cleared out
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// Will delete oldest files first, then second oldest, etc.
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// Until all files size are less than maxCacheSizeBytes
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func clearCacheFiles(path string, maxCacheSizeBytes int64) error {
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dirSize, err := getDirSize(path)
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if err != nil {
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log.Errorf("获取目录大小时出错: %s\n", err.Error())
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return err
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}
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for dirSize > maxCacheSizeBytes {
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err := clearDirForOldestFiles(path)
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if err != nil {
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log.Errorf("清除目录时出错: %s\n", err.Error())
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return err
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}
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dirSize, err = getDirSize(path)
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if err != nil {
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log.Errorf("获取目录大小时出错: %s\n", err.Error())
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return err
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}
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}
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return nil
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}
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func CleanCache() {
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log.Info("MaxCacheSize不为0，启动缓存清理服务...")
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ticker := time.NewTicker(1 * time.Minute)
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defer ticker.Stop()
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for range ticker.C {
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// MB to bytes
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maxCacheSizeBytes := int64(config.Config.MaxCacheSize) * 1024 * 1024
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if err := clearCacheFiles(config.Config.RemoteRawPath, maxCacheSizeBytes); err != nil {
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log.Warnf("清除远程原始缓存失败: %v", err)
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}
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if err := clearCacheFiles(config.Config.ExhaustPath, maxCacheSizeBytes); err != nil && err != os.ErrNotExist {
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log.Warnf("清除优化图像缓存失败: %v", err)
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}
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if err := clearCacheFiles(config.Config.MetadataPath, maxCacheSizeBytes); err != nil && err != os.ErrNotExist {
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log.Warnf("清除元数据缓存失败: %v", err)
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}
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}
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}
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