def download(filename):
path = get_archive_path(filename)
if exists(path):
return sendfile(filename)
else:
## Hijack HEAD requests to check status, if the file is ready
if request.method == 'HEAD':
abort(404)
make_archive(filename)
return render_template("processing.html", url=url_for(
'imaging.download', filename=filename))
def sendfile(filename):
if current_app.config["DEBUG"]:
# Use flask during development
return flask_send_file(get_archive_path(filename),
as_attachment=True)
else:
# Use nginx for the heavy lifting on the prod setup
r = make_response()
r.headers['Content-Type']=""
r.headers['Content-Disposition'] = "attachment"
r.headers['X-Accel-Redirect'] = "/dicom/" + filename
return r
