func pdfMergeEP(ctx context.Context, request interface{}) (response interface{}, err error) {
req, ok := request.(pdfMergeRequest)
if !ok {
return nil, errgo.Newf("awaited pdfMergeRequest, got %T", request)
}
defer func() {
for _, f := range req.Inputs {
f.Close()
}
}()
if sortBeforeMerge && req.Sort != NoSort || !sortBeforeMerge && req.Sort != DoSort {
logger.Info("msg", "sorting filenames, as requested", "ask", req.Sort, "config", sortBeforeMerge)
sort.Sort(ByName(req.Inputs))
}
filenames := make([]string, len(req.Inputs))
if !converter.LeaveTempFiles {
defer func() {
for _, fn := range filenames {
if fn != "" {
_ = os.Remove(fn)
}
}
}()
}
for i, f := range req.Inputs {
if filenames[i], err = readerToFile(f.ReadCloser, f.Filename); err != nil {
return nil, fmt.Errorf("error saving %q: %s", f.Filename, err)
}
select {
case <-ctx.Done():
return nil, ctx.Err()
default:
}
}
dst, err := tempFilename("pdfmerge-")
if err != nil {
return nil, err
}
logger.Info("msg", "PdfMerge", "dst", dst, "inputs", fmt.Sprintf("%s", filenames))
if err := converter.PdfMerge(ctx, dst, filenames...); err != nil {
logger.Warn("msg", "PdfMerge", "dst", dst, "inputs", filenames, "error", err)
return nil, err
}
f, err := os.Open(dst)
if err != nil {
return nil, err
}
_ = os.Remove(dst)
logger.Debug("msg", "PdfMerge OK", "dst", dst)
return f, nil
}
func mergePdf(outfn string, inpfn []string, sortFiles bool) error {
if sortFiles {
sort.Strings(inpfn)
}
return converter.PdfMerge(context.Background(), outfn, inpfn...)
}