def download(self, *args, **kwargs):
cf = get_object_or_404(CachedFile, id=kwargs['cfid'])
if cf.file:
resp = ChunkBasedFileResponse(cf.file.file, content_type=cf.type)
resp['Content-Disposition'] = 'attachment; filename="{}"'.format(cf.filename).encode("ascii", "ignore")
return resp
elif not settings.HAS_CELERY:
return Response(
{'status': 'failed', 'message': 'Unknown file ID or export failed'},
status=status.HTTP_410_GONE
)
res = AsyncResult(kwargs['asyncid'])
if res.failed():
if isinstance(res.info, dict) and res.info['exc_type'] == 'ExportError':
msg = res.info['exc_message']
else:
msg = 'Internal error'
return Response(
{'status': 'failed', 'message': msg},
status=status.HTTP_410_GONE
)
return Response(
{
'status': 'running' if res.state in ('PROGRESS', 'STARTED', 'SUCCESS') else 'waiting',
'percentage': res.result.get('value', None) if res.result else None,
},
status=status.HTTP_409_CONFLICT
)
def get(self, request: HttpRequest, *args, **kwargs) -> HttpResponse:
if 'ajax' in request.GET:
return HttpResponse('1' if self.object.file else '0')
elif self.object.file:
resp = ChunkBasedFileResponse(self.object.file.file, content_type=self.object.type)
resp['Content-Disposition'] = 'attachment; filename="{}"'.format(self.object.filename).encode('ascii', 'ignore')
return resp
else:
return super().get(request, *args, **kwargs)