func downloadFile(writer io.Writer, ptr *Pointer, workingfile, mediafile string, cb progress.CopyCallback) error {
	fmt.Fprintf(os.Stderr, "Downloading %s (%s)\n", workingfile, pb.FormatBytes(ptr.Size))

	xfers := transfer.GetDownloadAdapterNames()
	obj, adapterName, err := api.BatchOrLegacySingle(&api.ObjectResource{Oid: ptr.Oid, Size: ptr.Size}, "download", xfers)
	if err != nil {
		return errutil.Errorf(err, "Error downloading %s: %s", filepath.Base(mediafile), err)
	}

	if ptr.Size == 0 {
		ptr.Size = obj.Size
	}

	adapter := transfer.NewDownloadAdapter(adapterName)
	var tcb transfer.TransferProgressCallback
	if cb != nil {
		tcb = func(name string, totalSize, readSoFar int64, readSinceLast int) error {
			return cb(totalSize, readSoFar, readSinceLast)
		}
	}
	// Single download
	adapterResultChan := make(chan transfer.TransferResult, 1)
	adapter.Begin(1, tcb, adapterResultChan)
	adapter.Add(transfer.NewTransfer(filepath.Base(workingfile), obj, mediafile))
	adapter.End()
	res := <-adapterResultChan

	if res.Error != nil {
		return errutil.Errorf(err, "Error buffering media file: %s", res.Error)
	}

	return readLocalFile(writer, ptr, mediafile, workingfile, nil)
}
Example #2
0
func (q *TransferQueue) addToAdapter(t Transferable) {

	tr := transfer.NewTransfer(t.Name(), t.Object(), t.Path())

	if q.dryRun {
		// Don't actually transfer
		res := transfer.TransferResult{tr, nil}
		q.handleTransferResult(res)
		return
	}
	q.ensureAdapterBegun()
	q.adapter.Add(tr)
}
Example #3
0
func (q *TransferQueue) addToAdapter(t Transferable) {
	tr := transfer.NewTransfer(t.Name(), t.Object(), t.Path())

	if q.dryRun {
		// Don't actually transfer
		res := transfer.TransferResult{tr, nil}
		q.handleTransferResult(res)
		return
	}
	err := q.ensureAdapterBegun()
	if err != nil {
		q.errorc <- err
		q.Skip(t.Size())
		q.wait.Done()
		return
	}
	q.adapter.Add(tr)
}