def serve(self, request, path):
# the following code is largely borrowed from `django.views.static.serve`
# and django-filetransfers: filetransfers.backends.default
fullpath = os.path.join(settings.PRIVATE_MEDIA_ROOT, path)
if not os.path.exists(fullpath):
raise Http404('"{0}" does not exist'.format(fullpath))
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
content_type = mimetypes.guess_type(fullpath)[0] or 'application/octet-stream'
if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]):
return HttpResponseNotModified(content_type=content_type)
response = HttpResponse(open(fullpath, 'rb').read(), content_type=content_type)
response["Last-Modified"] = http_date(statobj[stat.ST_MTIME])
# filename = os.path.basename(path)
# response['Content-Disposition'] = smart_str(u'attachment; filename={0}'.format(filename))
return response
python类http_date()的实例源码
def serve(self, request, file_obj, **kwargs):
fullpath = file_obj.path
# the following code is largely borrowed from `django.views.static.serve`
# and django-filetransfers: filetransfers.backends.default
if not os.path.exists(fullpath):
raise Http404('"%s" does not exist' % fullpath)
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
content_type_key = 'mimetype' if LTE_DJANGO_1_4 else 'content_type'
response_params = {content_type_key: self.get_mimetype(fullpath)}
if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]):
return HttpResponseNotModified(**response_params)
response = HttpResponse(open(fullpath, 'rb').read(), **response_params)
response["Last-Modified"] = http_date(statobj[stat.ST_MTIME])
self.default_headers(request=request, response=response, file_obj=file_obj, **kwargs)
return response
def process_response(self, request, response):
response['Date'] = http_date()
if not response.streaming and not response.has_header('Content-Length'):
response['Content-Length'] = str(len(response.content))
etag = response.get('ETag')
last_modified = response.get('Last-Modified')
if last_modified:
last_modified = parse_http_date_safe(last_modified)
if etag or last_modified:
return get_conditional_response(
request,
etag=unquote_etag(etag),
last_modified=last_modified,
response=response,
)
return response
def __call__(self, request, *args, **kwargs):
"""
Copied from django.contrib.syndication.views.Feed
Supports file_name as a dynamic attr.
"""
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.mime_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
filename = self._get_dynamic_attr('file_name', obj)
if filename:
response['Content-Disposition'] = 'attachment; filename="%s"' % filename
return response
def get(self, request, name):
db_file = get_object_or_404(DBFile.objects.defer('content'), name=name)
mtime = time.mktime(db_file.updated_on.timetuple())
modified = was_modified_since(
header=self.request.META.get('HTTP_IF_MODIFIED_SINCE'),
mtime=mtime,
size=db_file.size)
if not modified:
return HttpResponseNotModified()
content_type, encoding = mimetypes.guess_type(db_file.name)
content_type = content_type or 'application/octet-stream'
response = HttpResponse(db_file.content, content_type=content_type)
response['Last-Modified'] = http_date(mtime)
response['Content-Length'] = db_file.size
if encoding: response['Content-Encoding'] = encoding
return response
def process_response(self, request, response):
response['Date'] = http_date()
if not response.streaming and not response.has_header('Content-Length'):
response['Content-Length'] = str(len(response.content))
etag = response.get('ETag')
last_modified = response.get('Last-Modified')
if last_modified:
last_modified = parse_http_date_safe(last_modified)
if etag or last_modified:
return get_conditional_response(
request,
etag=etag,
last_modified=last_modified,
response=response,
)
return response
def get(self, request, mode_id=None):
mode_id = int(mode_id)
if not (mode_id in Mode.stat_v1_ids):
return HttpResponse(status=404)
last_updated = to_unix(cache_value("ranking_stats_last_modified", 600, ranking_stats_last_modified))
now = to_unix(utcnow())
try:
if_modified_since = parse_http_date(request.META['HTTP_IF_MODIFIED_SINCE'])
except (ValueError, KeyError):
if_modified_since = 0
if if_modified_since >= last_updated:
response = HttpResponse("", content_type="application/json", status=304)
else:
response = HttpResponse(cache_value("ranking_stats_%d" % mode_id, 600,
rankings_view_client, 'ranking_stats', mode_id),
content_type="application/json")
response['Cache-Control'] = "max-age=86400"
response['Date'] = http_date(now)
response['Expires'] = http_date(now + 86400)
response['Last-Modified'] = http_date(last_updated)
return response
def serve(self, request, file_obj, **kwargs):
fullpath = file_obj.path
# the following code is largely borrowed from `django.views.static.serve`
# and django-filetransfers: filetransfers.backends.default
if not os.path.exists(fullpath):
raise Http404('"%s" does not exist' % fullpath)
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
content_type_key = 'mimetype' if LTE_DJANGO_1_4 else 'content_type'
response_params = {content_type_key: self.get_mimetype(fullpath)}
if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]):
return HttpResponseNotModified(**response_params)
response = HttpResponse(open(fullpath, 'rb').read(), **response_params)
response["Last-Modified"] = http_date(statobj[stat.ST_MTIME])
self.default_headers(request=request, response=response, file_obj=file_obj, **kwargs)
return response
def process_response(self, request, response):
response['Date'] = http_date()
if not response.streaming and not response.has_header('Content-Length'):
response['Content-Length'] = str(len(response.content))
etag = response.get('ETag')
last_modified = response.get('Last-Modified')
if last_modified:
last_modified = parse_http_date_safe(last_modified)
if etag or last_modified:
return get_conditional_response(
request,
etag=unquote_etag(etag),
last_modified=last_modified,
response=response,
)
return response
def process_response(self, request, response):
response['Date'] = http_date()
if not response.streaming and not response.has_header('Content-Length'):
response['Content-Length'] = str(len(response.content))
etag = response.get('ETag')
last_modified = response.get('Last-Modified')
if last_modified:
last_modified = parse_http_date_safe(last_modified)
if etag or last_modified:
return get_conditional_response(
request,
etag=unquote_etag(etag),
last_modified=last_modified,
response=response,
)
return response
def patch_response_headers(response, cache_timeout=None):
"""
Adds some useful headers to the given HttpResponse object:
ETag, Last-Modified, Expires and Cache-Control
Each header is only added if it isn't already set.
cache_timeout is in seconds. The CACHE_MIDDLEWARE_SECONDS setting is used
by default.
"""
if cache_timeout is None:
cache_timeout = settings.CACHE_MIDDLEWARE_SECONDS
if cache_timeout < 0:
cache_timeout = 0 # Can't have max-age negative
if settings.USE_ETAGS and not response.has_header('ETag'):
if hasattr(response, 'render') and callable(response.render):
response.add_post_render_callback(_set_response_etag)
else:
response = _set_response_etag(response)
if not response.has_header('Last-Modified'):
response['Last-Modified'] = http_date()
if not response.has_header('Expires'):
response['Expires'] = http_date(time.time() + cache_timeout)
patch_cache_control(response, max_age=cache_timeout)
def test_not_modified(self):
server = DefaultServer()
request = Mock()
request.META = {'HTTP_IF_MODIFIED_SINCE': http_date(time.time())}
response = server.serve(request, self.filer_file.file)
self.assertTrue(isinstance(response, HttpResponseNotModified))
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def sitemap(request, sitemaps, section=None,
template_name='sitemap.xml', content_type='application/xml'):
req_protocol = request.scheme
req_site = get_current_site(request)
if section is not None:
if section not in sitemaps:
raise Http404("No sitemap available for section: %r" % section)
maps = [sitemaps[section]]
else:
maps = sitemaps.values()
page = request.GET.get("p", 1)
urls = []
for site in maps:
try:
if callable(site):
site = site()
urls.extend(site.get_urls(page=page, site=req_site,
protocol=req_protocol))
except EmptyPage:
raise Http404("Page %s empty" % page)
except PageNotAnInteger:
raise Http404("No page '%s'" % page)
response = TemplateResponse(request, template_name, {'urlset': urls},
content_type=content_type)
if hasattr(site, 'latest_lastmod'):
# if latest_lastmod is defined for site, set header so as
# ConditionalGetMiddleware is able to send 304 NOT MODIFIED
lastmod = site.latest_lastmod
response['Last-Modified'] = http_date(
timegm(
lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
else lastmod.timetuple()
)
)
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.mime_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def sitemap(request, sitemaps, section=None,
template_name='sitemap.xml', content_type='application/xml'):
req_protocol = request.scheme
req_site = get_current_site(request)
if section is not None:
if section not in sitemaps:
raise Http404("No sitemap available for section: %r" % section)
maps = [sitemaps[section]]
else:
maps = list(six.itervalues(sitemaps))
page = request.GET.get("p", 1)
urls = []
for site in maps:
try:
if callable(site):
site = site()
urls.extend(site.get_urls(page=page, site=req_site,
protocol=req_protocol))
except EmptyPage:
raise Http404("Page %s empty" % page)
except PageNotAnInteger:
raise Http404("No page '%s'" % page)
response = TemplateResponse(request, template_name, {'urlset': urls},
content_type=content_type)
if hasattr(site, 'latest_lastmod'):
# if latest_lastmod is defined for site, set header so as
# ConditionalGetMiddleware is able to send 304 NOT MODIFIED
lastmod = site.latest_lastmod
response['Last-Modified'] = http_date(
timegm(
lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
else lastmod.timetuple()
)
)
return response
def process_response(self, request, response):
response['Date'] = http_date()
if not response.streaming and not response.has_header('Content-Length'):
response['Content-Length'] = str(len(response.content))
# If-None-Match must be ignored if original result would be anything
# other than a 2XX or 304 status. 304 status would result in no change.
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.26
if 200 <= response.status_code < 300 and response.has_header('ETag'):
if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
if if_none_match == response['ETag']:
# Setting the status is enough here. The response handling path
# automatically removes content for this status code (in
# http.conditional_content_removal()).
response.status_code = 304
# If-Modified-Since must be ignored if the original result was not a 200.
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.25
if response.status_code == 200 and response.has_header('Last-Modified'):
if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
if if_modified_since is not None:
if_modified_since = parse_http_date_safe(if_modified_since)
if if_modified_since is not None:
last_modified = parse_http_date_safe(response['Last-Modified'])
if last_modified is not None and last_modified <= if_modified_since:
# Setting the status code is enough here (same reasons as
# above).
response.status_code = 304
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def sitemap(request, sitemaps, section=None,
template_name='sitemap.xml', content_type='application/xml'):
req_protocol = request.scheme
req_site = get_current_site(request)
if section is not None:
if section not in sitemaps:
raise Http404("No sitemap available for section: %r" % section)
maps = [sitemaps[section]]
else:
maps = sitemaps.values()
page = request.GET.get("p", 1)
urls = []
for site in maps:
try:
if callable(site):
site = site()
urls.extend(site.get_urls(page=page, site=req_site,
protocol=req_protocol))
except EmptyPage:
raise Http404("Page %s empty" % page)
except PageNotAnInteger:
raise Http404("No page '%s'" % page)
response = TemplateResponse(request, template_name, {'urlset': urls},
content_type=content_type)
if hasattr(site, 'latest_lastmod'):
# if latest_lastmod is defined for site, set header so as
# ConditionalGetMiddleware is able to send 304 NOT MODIFIED
lastmod = site.latest_lastmod
response['Last-Modified'] = http_date(
timegm(
lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
else lastmod.timetuple()
)
)
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.content_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def sitemap(request, sitemaps, section=None,
template_name='sitemap.xml', content_type='application/xml'):
req_protocol = request.scheme
req_site = get_current_site(request)
if section is not None:
if section not in sitemaps:
raise Http404("No sitemap available for section: %r" % section)
maps = [sitemaps[section]]
else:
maps = sitemaps.values()
page = request.GET.get("p", 1)
urls = []
for site in maps:
try:
if callable(site):
site = site()
urls.extend(site.get_urls(page=page, site=req_site,
protocol=req_protocol))
except EmptyPage:
raise Http404("Page %s empty" % page)
except PageNotAnInteger:
raise Http404("No page '%s'" % page)
response = TemplateResponse(request, template_name, {'urlset': urls},
content_type=content_type)
if hasattr(site, 'latest_lastmod'):
# if latest_lastmod is defined for site, set header so as
# ConditionalGetMiddleware is able to send 304 NOT MODIFIED
lastmod = site.latest_lastmod
response['Last-Modified'] = http_date(
timegm(
lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
else lastmod.timetuple()
)
)
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.mime_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def sitemap(request, sitemaps, section=None,
template_name='sitemap.xml', content_type='application/xml'):
req_protocol = request.scheme
req_site = get_current_site(request)
if section is not None:
if section not in sitemaps:
raise Http404("No sitemap available for section: %r" % section)
maps = [sitemaps[section]]
else:
maps = list(six.itervalues(sitemaps))
page = request.GET.get("p", 1)
urls = []
for site in maps:
try:
if callable(site):
site = site()
urls.extend(site.get_urls(page=page, site=req_site,
protocol=req_protocol))
except EmptyPage:
raise Http404("Page %s empty" % page)
except PageNotAnInteger:
raise Http404("No page '%s'" % page)
response = TemplateResponse(request, template_name, {'urlset': urls},
content_type=content_type)
if hasattr(site, 'latest_lastmod'):
# if latest_lastmod is defined for site, set header so as
# ConditionalGetMiddleware is able to send 304 NOT MODIFIED
lastmod = site.latest_lastmod
response['Last-Modified'] = http_date(
timegm(
lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
else lastmod.timetuple()
)
)
return response
def process_response(self, request, response):
response['Date'] = http_date()
if not response.streaming and not response.has_header('Content-Length'):
response['Content-Length'] = str(len(response.content))
# If-None-Match must be ignored if original result would be anything
# other than a 2XX or 304 status. 304 status would result in no change.
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.26
if 200 <= response.status_code < 300 and response.has_header('ETag'):
if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
if if_none_match == response['ETag']:
# Setting the status is enough here. The response handling path
# automatically removes content for this status code (in
# http.conditional_content_removal()).
response.status_code = 304
# If-Modified-Since must be ignored if the original result was not a 200.
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.25
if response.status_code == 200 and response.has_header('Last-Modified'):
if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
if if_modified_since is not None:
if_modified_since = parse_http_date_safe(if_modified_since)
if if_modified_since is not None:
last_modified = parse_http_date_safe(response['Last-Modified'])
if last_modified is not None and last_modified <= if_modified_since:
# Setting the status code is enough here (same reasons as
# above).
response.status_code = 304
return response
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(content_type=feedgen.mime_type)
if hasattr(self, 'item_pubdate') or hasattr(self, 'item_updateddate'):
# if item_pubdate or item_updateddate is defined for the feed, set
# header so as ConditionalGetMiddleware is able to send 304 NOT MODIFIED
response['Last-Modified'] = http_date(
timegm(feedgen.latest_post_date().utctimetuple()))
feedgen.write(response, 'utf-8')
return response
def sitemap(request, sitemaps, section=None,
template_name='sitemap.xml', content_type='application/xml'):
req_protocol = request.scheme
req_site = get_current_site(request)
if section is not None:
if section not in sitemaps:
raise Http404("No sitemap available for section: %r" % section)
maps = [sitemaps[section]]
else:
maps = list(six.itervalues(sitemaps))
page = request.GET.get("p", 1)
urls = []
for site in maps:
try:
if callable(site):
site = site()
urls.extend(site.get_urls(page=page, site=req_site,
protocol=req_protocol))
except EmptyPage:
raise Http404("Page %s empty" % page)
except PageNotAnInteger:
raise Http404("No page '%s'" % page)
response = TemplateResponse(request, template_name, {'urlset': urls},
content_type=content_type)
if hasattr(site, 'latest_lastmod'):
# if latest_lastmod is defined for site, set header so as
# ConditionalGetMiddleware is able to send 304 NOT MODIFIED
lastmod = site.latest_lastmod
response['Last-Modified'] = http_date(
timegm(
lastmod.utctimetuple() if isinstance(lastmod, datetime.datetime)
else lastmod.timetuple()
)
)
return response
