forum_modules/exporter/views.py

   1 from __future__ import with_statement
   2
   3 import os, tarfile, ConfigParser, datetime
   4
   5 from StringIO import StringIO
   6 from django.http import HttpResponse, HttpResponseRedirect, Http404
   7 from django.utils.translation import ugettext as _
   8 from django.utils import simplejson
   9 from django.core.cache import cache
  10 from django.core.urlresolvers import reverse
  11 from forum.views.admin import admin_tools_page, admin_page
  12 from forum.models import User
  13 from forms import ExporterForm
  14 from threading import Thread
  15 import settings as selsettings
  16 from forum import settings
  17
  18 from exporter import export, CACHE_KEY, EXPORT_STEPS, DATE_AND_AUTHOR_INF_SECTION, DATETIME_FORMAT
  19 from importer import start_import
  20
  21 @admin_tools_page(_('exporter'), _('XML data export'))
  22 def exporter(request):
  23     state = cache.get(CACHE_KEY)
  24
  25     if state and state['running']:
  26         return HttpResponseRedirect(reverse('exporter_running', kwargs=dict(mode='exporter')))
  27
  28     if request.method == 'POST':
  29         form = ExporterForm(request.POST)
  30
  31         if form.is_valid():
  32             thread = Thread(target=export, args=[form.cleaned_data, request.user])
  33             thread.setDaemon(True)
  34             thread.start()
  35
  36             return HttpResponseRedirect(reverse('exporter_running', kwargs=dict(mode='exporter')))
  37     else:
  38         form = ExporterForm()
  39
  40     available = []
  41
  42     folder = unicode(selsettings.EXPORTER_BACKUP_STORAGE)
  43
  44     for f in os.listdir(folder):
  45         if (not os.path.isdir(os.path.join(folder, f))) and f.endswith('.backup.inf'):
  46             try:
  47                 with open(os.path.join(folder, f), 'r') as inffile:
  48                     inf = ConfigParser.SafeConfigParser()
  49                     inf.readfp(inffile)
  50
  51                     if inf.get(DATE_AND_AUTHOR_INF_SECTION, 'site') == settings.APP_URL and os.path.exists(
  52                                     os.path.join(folder, inf.get(DATE_AND_AUTHOR_INF_SECTION, 'file-name'))):
  53                         available.append({
  54                             'author': User.objects.get(id=inf.get(DATE_AND_AUTHOR_INF_SECTION, 'author')),
  55                             'date': datetime.datetime.strptime(inf.get(DATE_AND_AUTHOR_INF_SECTION, 'finished'), DATETIME_FORMAT)
  56                         })
  57             except Exception, e:
  58                 pass
  59
  60     return ('modules/exporter/exporter.html', {
  61         'form': form,
  62         'available': available,
  63     })
  64
  65 @admin_page
  66 def running(request, mode):
  67     state = cache.get(CACHE_KEY)
  68     if state is None:
  69         return HttpResponseRedirect(reverse('admin_tools', args=[_('exporter')]))
  70
  71     return ('modules/exporter/running.html', {
  72         'mode': mode,
  73         'steps': EXPORT_STEPS
  74     })
  75
  76 def state(request):
  77     return HttpResponse(simplejson.dumps(cache.get(CACHE_KEY)), mimetype="application/json")
  78
  79 @admin_page
  80 def download(request):
  81     if request.GET and request.GET.get('file', None):
  82         fname = os.path.join(selsettings.EXPORTER_BACKUP_STORAGE, request.GET.get('file'))
  83     else:
  84         raise Http404
  85
  86     if not os.path.exists(fname):
  87         raise Http404
  88
  89     if fname.endswith('.gz'):
  90         content_type='application/x-gzip'
  91         filename = 'backup.tar.gz'
  92     else:
  93         content_type='application/zip'
  94         filename = 'backup.zip'
  95
  96     response = HttpResponse(open(fname, 'rb').read(), content_type=content_type)
  97     response['Content-Length'] = os.path.getsize(fname)
  98     response['Content-Disposition'] = 'attachment; filename=%s' % filename
  99     return response
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