filex/uploadhandler.py

   1 from functools import wraps
   2 import os
   3
   4 from django.core.files.uploadedfile import UploadedFile
   5 from django.core.files.uploadhandler import FileUploadHandler, StopUpload, StopFutureHandlers
   6 from django.views.decorators.csrf import csrf_exempt, csrf_protect
   7
   8 from filex.forms import HostPathForm
   9 from filex.ftp import FTPOperation
  10
  11
  12 class FtpUploadHandler(FileUploadHandler):
  13     ftp = None
  14     url = None
  15     tmp_url = None
  16
  17     def new_file(self, file_name, *args, **kwargs):
  18         super(FtpUploadHandler, self).new_file(file_name, *args, **kwargs)
  19
  20         form = HostPathForm(self.request.GET)
  21
  22         if self.request.user.is_anonymous() or not form.is_valid():
  23             raise StopUpload(connection_reset=True)
  24
  25         if self.ftp is None:
  26             self.ftp = FTPOperation(self.request.session['proxy'], self.chunk_size)
  27
  28         self.url = 'gsiftp://{}/{}'.format(form.cleaned_data['host'],
  29                                            os.path.join(form.cleaned_data['path'], self.file_name))
  30         self.tmp_url = self.url + '.part'
  31
  32         self.ftp.put(self.tmp_url)
  33
  34         StopFutureHandlers()
  35
  36     def receive_data_chunk(self, raw_data, start):
  37         self.ftp.stream.put(raw_data)
  38
  39     def file_complete(self, file_size):
  40         # signal end of data and wait for finish
  41         self.ftp.stream.put(None)
  42         self.ftp.wait()
  43
  44         self.ftp.move(self.tmp_url, self.url)
  45
  46         return UploadedFile(name=self.file_name, size=file_size, charset=self.charset,
  47                             content_type=self.content_type, content_type_extra=self.content_type_extra)
  48
  49
  50 def with_ftp_upload_handler(view_func):
  51     @wraps(view_func)
  52     def wrapped_view(request, *args, **kwargs):
  53         request.upload_handlers = [FtpUploadHandler(request)]
  54
  55         return csrf_protect(view_func)(request, *args, **kwargs)
  56
  57     return csrf_exempt(wrapped_view)