61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
package backup
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import (
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"fmt"
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"io/fs"
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"os"
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"path/filepath"
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"time"
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"godump/config"
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"godump/logger"
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)
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func enforceRetention(cfg config.InstanceConfig) (int, error) {
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if cfg.RetentionDays <= 0 {
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return 0, nil
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}
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cutoff := time.Now().AddDate(0, 0, -cfg.RetentionDays)
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deletedCount := 0
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err := filepath.WalkDir(cfg.BackupDir, func(path string, d fs.DirEntry, err error) error {
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if err != nil {
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if os.IsNotExist(err) {
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return nil
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}
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return err
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}
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if d.IsDir() {
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return nil
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}
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info, err := d.Info()
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if err != nil {
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return err
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}
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if info.ModTime().Before(cutoff) {
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ageDays := int(time.Since(info.ModTime()).Hours() / 24)
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if err := os.Remove(path); err != nil {
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logger.Error(cfg.Name, "Failed to delete old backup %s: %v", path, err)
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} else {
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logger.Info(cfg.Name, "Deleted old backup %s (age: %d days)", path, ageDays)
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deletedCount++
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}
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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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if os.IsNotExist(err) {
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return 0, nil
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}
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return deletedCount, fmt.Errorf("error walking backup directory: %w", err)
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}
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return deletedCount, nil
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}
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