Method keepStorageClean

modules/caddytls/tls.go:909–928

keepStorageClean starts a goroutine that immediately cleans up all known storage units if it was not recently done, and then runs the operation at every tick from t.storageCleanTicker.

()

// known storage units if it was not recently done, and then runs the
// operation at every tick from t.storageCleanTicker.
func (t *TLS) keepStorageClean() {
	t.storageCleanTicker = time.NewTicker(t.storageCleanInterval())
	t.storageCleanStop = make(chan struct{})
	go func() {
		defer func() {
			if err := recover(); err != nil {
				log.Printf("[PANIC] storage cleaner: %v\n%s", err, debug.Stack())
			}
		}()
		t.cleanStorageUnits()
		for {
			select {
			case <-t.storageCleanStop:
				return
			case <-t.storageCleanTicker.C:
				t.cleanStorageUnits()
			}
		}
	}()
}

func (t *TLS) cleanStorageUnits() {
	storageCleanMu.Lock()