def inner(self, request, *args, add_cache_key=None, **kwargs):
last_update = get_last_mapdata_update()
if last_update is None:
return func(self, request, *args, **kwargs)
cache_key = '__'.join((
'c3nav__mapdata__api',
last_update.isoformat(),
add_cache_key if add_cache_key is not None else '',
request.accepted_renderer.format
if isinstance(self, APIView) else '',
request.path,
))
response = cache.get(cache_key)
if not response:
response = func(self, request, *args, **kwargs)
response['Last-Modifed'] = http_date(
timegm(last_update.utctimetuple()))
if isinstance(response, APIResponse):
response = self.finalize_response(request, response, *args,
**kwargs)
response.render()
if response.status_code < 400:
cache.set(cache_key, response, timeout)
return response
def map_image(request, area, level):
level = get_object_or_404(Level, name=level, intermediate=False)
if area == ':base':
img = get_render_path('png', level.name, 'full', True)
elif area == ':full':
if not request.c3nav_full_access:
raise Http404
img = get_render_path('png', level.name, 'full', False)
elif area in request.c3nav_access_list:
img = get_render_path(area + '.png', level.name, 'full', False)
else:
raise Http404
last_update = get_last_mapdata_update()
etag = '-'.join(str(i) for i in last_update.timetuple())
if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
if if_none_match:
if if_none_match == etag:
return HttpResponseNotModified()
response = HttpResponse(content_type='image/png')
for chunk in File(open(img, 'rb')).chunks():
response.write(chunk)
response['ETag'] = etag
response['Cache-Control'] = 'no-cache'
return response
def inner(*args, **kwargs):
last_update = get_last_mapdata_update()
if last_update is None:
return func(*args, **kwargs)
result = cache.get(cache_key)
if not result:
result = func(*args, **kwargs)
cache.set(cache_key, result, timeout)
return result
def get_in_areas(self):
last_update = get_last_mapdata_update()
if last_update is None:
return self._get_in_areas()
cache_key = 'c3nav__mapdata__location__in_areas__'+last_update.isoformat()+'__'+self.name,
in_areas = cache.get(cache_key)
if not in_areas:
in_areas = self._get_in_areas()
cache.set(cache_key, in_areas, 900)
return in_areas
def list(self, request, **kwargs):
etag = hashlib.sha256(json.dumps({
'full_access': request.c3nav_full_access,
'access_list': request.c3nav_access_list,
'last_update': get_last_mapdata_update().isoformat()
}).encode()).hexdigest()
if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
if if_none_match:
if if_none_match == etag:
return HttpResponseNotModified()
locations = []
locations += list(filter_queryset_by_access(request, self._filter(LocationGroup.objects.all())))
locations += sorted(filter_arealocations_by_access(request, self._filter(AreaLocation.objects.all())),
key=AreaLocation.get_sort_key, reverse=True)
response = Response([location.to_location_json() for location in locations])
response['ETag'] = etag
response['Cache-Control'] = 'no-cache'
return response