55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
package snapshots
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import (
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"path/filepath"
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"time"
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"github.com/tkw1536/goprogram/stream"
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)
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// ShouldPrune determines if a file with the provided modification time should be
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// removed from the export log.
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func (manager *Manager) ShouldPrune(modtime time.Time) bool {
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return time.Since(modtime) > time.Duration(manager.Config.MaxBackupAge)*24*time.Hour
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}
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// Prune prunes all old exports
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func (manager *Manager) PruneExports(io stream.IOStream) error {
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sPath := manager.ArchivePath()
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// list all the files
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entries, err := manager.Core.Environment.ReadDir(sPath)
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if err != nil {
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return err
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}
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for _, entry := range entries {
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// skip directories
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if entry.IsDir() {
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continue
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}
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// grab info about the file
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info, err := entry.Info()
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if err != nil {
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return err
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}
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// check if it should be pruned!
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if !manager.ShouldPrune(info.ModTime()) {
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continue
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}
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// assemble path, and then remove the file!
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path := filepath.Join(sPath, entry.Name())
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io.Printf("Removing %s cause it is older than %d days", path, manager.Config.MaxBackupAge)
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if err := manager.Core.Environment.Remove(path); err != nil {
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return err
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}
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}
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// prune the snapshot log!
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_, err = manager.Instances.ExportLog()
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return err
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}
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