type tierMemJournal struct {
	entries chan jentry
}

func newTierMemJournal(nevents int) *tierMemJournal {
	return &tierMemJournal{
		entries: make(chan jentry, nevents),
	}
}

func (j *tierMemJournal) processEntries(ctx context.Context) {
	for {
		select {
		case <-ctx.Done():
			return
		case entry := <-j.entries:
			logger.LogIf(ctx, deleteObjectFromRemoteTier(ctx, entry.ObjName, entry.VersionID, entry.TierName))
		}
	}

	for _, diskPath := range globalEndpoints.LocalDisksPaths() {
		t.diskPath = diskPath

		go t.deletePending(ctx)  // for existing journal entries from previous MinIO versions
		go t.processEntries(ctx) // for newer journal entries circa free-versions
		return nil
	}

	return errors.New("no local drive found")
}

// rotate rotates the journal. If a read-only journal already exists it does