Here are the examples of the python api django.http.HttpResponseNotModified taken from open source projects. By voting up you can indicate which examples are most useful and appropriate.
17 Examples
3
View Complete Implementation : cache.py
Copyright MIT License
Author : bpgc-cte
Copyright MIT License
Author : bpgc-cte
def _not_modified(request, response=None):
new_response = HttpResponseNotModified()
if response:
# Preserve the headers required by Section 4.1 of RFC 7232, as well as
# Last-Modified.
for header in ('Cache-Control', 'Content-Location', 'Date', 'ETag', 'Expires', 'Last-Modified', 'Vary'):
if header in response:
new_response[header] = response[header]
# Preserve cookies as per the cookie specification: "If a proxy server
# receives a response which contains a Set-cookie header, it should
# propagate the Set-cookie header to the client, regardless of whether
# the response was 304 (Not Modified) or 200 (OK).
# https://curl.haxx.se/rfc/cookie_spec.html
new_response.cookies = response.cookies
return new_response
3
View Complete Implementation : cache.py
Copyright Apache License 2.0
Author : drexly
Copyright Apache License 2.0
Author : drexly
def _not_modified(request, response=None):
if response:
# We need to keep the cookies, see ticket #4994.
cookies = response.cookies
response = HttpResponseNotModified()
response.cookies = cookies
return response
else:
return HttpResponseNotModified()
3
View Complete Implementation : simple.py
Copyright BSD 3-Clause "New" or "Revised" License
Author : moggers87
Copyright BSD 3-Clause "New" or "Revised" License
Author : moggers87
def sendfile(request, filename, **kwargs):
# Respect the If-Modified-Since header.
statobj = os.stat(filename)
if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]):
return HttpResponseNotModified()
with File(open(filename, 'rb')) as f:
response = HttpResponse(f.chunks())
response["Last-Modified"] = http_date(statobj[stat.ST_MTIME])
return response
3
View Complete Implementation : tests.py
Copyright GNU Affero General Public License v3.0
Author : nesdis
Copyright GNU Affero General Public License v3.0
Author : nesdis
def test_not_modified(self):
response = HttpResponseNotModified()
self.astertEqual(response.status_code, 304)
# 304 responses should not have content/content-type
with self.astertRaises(AttributeError):
response.content = "Hello dear"
self.astertNotIn('content-type', response)
3
View Complete Implementation : private_media.py
Copyright MIT License
Author : robotichead
Copyright MIT License
Author : robotichead
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
0
View Complete Implementation : common.py
Copyright GNU General Public License v2.0
Author : blackye
Copyright GNU General Public License v2.0
Author : blackye
def process_response(self, request, response):
"Send broken link emails and calculate the Etag, if needed."
if response.status_code == 404:
if settings.SEND_BROKEN_LINK_EMAILS and not settings.DEBUG:
# If the referrer was from an internal link or a non-search-engine site,
# send a note to the managers.
domain = request.get_host()
referer = request.META.get('HTTP_REFERER', None)
is_internal = _is_internal_request(domain, referer)
path = request.get_full_path()
if referer and not _is_ignorable_404(path) and (is_internal or '?' not in referer):
ua = request.META.get('HTTP_USER_AGENT', '<none>')
ip = request.META.get('REMOTE_ADDR', '<none>')
mail_managers("Broken %slink on %s" % ((is_internal and 'INTERNAL ' or ''), domain),
"Referrer: %s\nRequested URL: %s\nUser agent: %s\nIP address: %s\n" \
% (referer, request.get_full_path(), ua, ip),
fail_silently=True)
return response
# Use ETags, if requested.
if settings.USE_ETAGS:
if response.has_header('ETag'):
etag = response['ETag']
elif response.streaming:
etag = None
else:
etag = '"%s"' % hashlib.md5(response.content).hexdigest()
if etag is not None:
if (200 <= response.status_code < 300
and request.META.get('HTTP_IF_NONE_MATCH') == etag):
cookies = response.cookies
response = http.HttpResponseNotModified()
response.cookies = cookies
else:
response['ETag'] = etag
return response
0
View Complete Implementation : http.py
Copyright GNU General Public License v2.0
Author : blackye
Copyright GNU General Public License v2.0
Author : blackye
def condition(etag_func=None, last_modified_func=None):
"""
Decorator to support conditional retrieval (or change) for a view
function.
The parameters are callables to compute the ETag and last modified time for
the requested resource, respectively. The callables are pasted the same
parameters as the view itself. The Etag function should return a string (or
None if the resource doesn't exist), whilst the last_modified function
should return a datetime object (or None if the resource doesn't exist).
If both parameters are provided, all the preconditions must be met before
the view is processed.
This decorator will either past control to the wrapped view function or
return an HTTP 304 response (unmodified) or 412 response (preconditions
failed), depending upon the request method.
Any behavior marked as "undefined" in the HTTP spec (e.g. If-none-match
plus If-modified-since headers) will result in the view function being
called.
"""
def decorator(func):
@wraps(func, astigned=available_attrs(func))
def inner(request, *args, **kwargs):
# Get HTTP request headers
if_modified_since = request.META.get("HTTP_IF_MODIFIED_SINCE")
if if_modified_since:
if_modified_since = parse_http_date_safe(if_modified_since)
if_none_match = request.META.get("HTTP_IF_NONE_MATCH")
if_match = request.META.get("HTTP_IF_MATCH")
if if_none_match or if_match:
# There can be more than one ETag in the request, so we
# consider the list of values.
try:
etags = parse_etags(if_none_match or if_match)
except ValueError:
# In case of invalid etag ignore all ETag headers.
# Apparently Opera sends invalidly quoted headers at times
# (we should be returning a 400 response, but that's a
# little extreme) -- this is Django bug #10681.
if_none_match = None
if_match = None
# Compute values (if any) for the requested resource.
if etag_func:
res_etag = etag_func(request, *args, **kwargs)
else:
res_etag = None
if last_modified_func:
dt = last_modified_func(request, *args, **kwargs)
if dt:
res_last_modified = timegm(dt.utctimetuple())
else:
res_last_modified = None
else:
res_last_modified = None
response = None
if not ((if_match and (if_modified_since or if_none_match)) or
(if_match and if_none_match)):
# We only get here if no undefined combinations of headers are
# specified.
if ((if_none_match and (res_etag in etags or
"*" in etags and res_etag)) and
(not if_modified_since or
(res_last_modified and if_modified_since and
res_last_modified <= if_modified_since))):
if request.method in ("GET", "HEAD"):
response = HttpResponseNotModified()
else:
logger.warning('Precondition Failed: %s', request.path,
extra={
'status_code': 412,
'request': request
}
)
response = HttpResponse(status=412)
elif if_match and ((not res_etag and "*" in etags) or
(res_etag and res_etag not in etags)):
logger.warning('Precondition Failed: %s', request.path,
extra={
'status_code': 412,
'request': request
}
)
response = HttpResponse(status=412)
elif (not if_none_match and request.method == "GET" and
res_last_modified and if_modified_since and
res_last_modified <= if_modified_since):
response = HttpResponseNotModified()
if response is None:
response = func(request, *args, **kwargs)
# Set relevant headers on the response if they don't already exist.
if res_last_modified and not response.has_header('Last-Modified'):
response['Last-Modified'] = http_date(res_last_modified)
if res_etag and not response.has_header('ETag'):
response['ETag'] = quote_etag(res_etag)
return response
return inner
return decorator
0
View Complete Implementation : static.py
Copyright GNU General Public License v2.0
Author : blackye
Copyright GNU General Public License v2.0
Author : blackye
def serve(request, path, docameent_root=None, show_indexes=False):
"""
Serve static files below a given point in the directory structure.
To use, put a URL pattern such as::
(r'^(?P<path>.*)$', 'django.views.static.serve', {'docameent_root' : '/path/to/my/files/'})
in your URLconf. You must provide the ``docameent_root`` param. You may
also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
of the directory. This index view will use the template hardcoded below,
but if you'd like to override it, you can create a template called
``static/directory_index.html``.
"""
path = posixpath.normpath(unquote(path))
path = path.lstrip('/')
newpath = ''
for part in path.split('/'):
if not part:
# Strip empty path components.
continue
drive, part = os.path.splitdrive(part)
head, part = os.path.split(part)
if part in (os.curdir, os.pardir):
# Strip '.' and '..' in path.
continue
newpath = os.path.join(newpath, part).replace('\\', '/')
if newpath and path != newpath:
return HttpResponseRedirect(newpath)
fullpath = os.path.join(docameent_root, newpath)
if os.path.isdir(fullpath):
if show_indexes:
return directory_index(newpath, fullpath)
raise Http404(_("Directory indexes are not allowed here."))
if not os.path.exists(fullpath):
raise Http404(_('"%(path)s" does not exist') % {'path': fullpath})
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
mimetype, encoding = mimetypes.guess_type(fullpath)
mimetype = mimetype or 'application/octet-stream'
if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
statobj.st_mtime, statobj.st_size):
return HttpResponseNotModified()
response = CompatibleStreamingHttpResponse(open(fullpath, 'rb'), content_type=mimetype)
response["Last-Modified"] = http_date(statobj.st_mtime)
if stat.S_ISREG(statobj.st_mode):
response["Content-Length"] = statobj.st_size
if encoding:
response["Content-Encoding"] = encoding
return response
0
View Complete Implementation : static.py
Copyright MIT License
Author : bpgc-cte
Copyright MIT License
Author : bpgc-cte
def serve(request, path, docameent_root=None, show_indexes=False):
"""
Serve static files below a given point in the directory structure.
To use, put a URL pattern such as::
from django.views.static import serve
url(r'^(?P<path>.*)$', serve, {'docameent_root': '/path/to/my/files/'})
in your URLconf. You must provide the ``docameent_root`` param. You may
also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
of the directory. This index view will use the template hardcoded below,
but if you'd like to override it, you can create a template called
``static/directory_index.html``.
"""
path = posixpath.normpath(unquote(path)).lstrip('/')
fullpath = safe_join(docameent_root, path)
if os.path.isdir(fullpath):
if show_indexes:
return directory_index(path, fullpath)
raise Http404(_("Directory indexes are not allowed here."))
if not os.path.exists(fullpath):
raise Http404(_('"%(path)s" does not exist') % {'path': fullpath})
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
statobj.st_mtime, statobj.st_size):
return HttpResponseNotModified()
content_type, encoding = mimetypes.guess_type(fullpath)
content_type = content_type or 'application/octet-stream'
response = FileResponse(open(fullpath, 'rb'), content_type=content_type)
response["Last-Modified"] = http_date(statobj.st_mtime)
if stat.S_ISREG(statobj.st_mode):
response["Content-Length"] = statobj.st_size
if encoding:
response["Content-Encoding"] = encoding
return response
0
View Complete Implementation : views.py
Copyright Apache License 2.0
Author : c3nav
Copyright Apache License 2.0
Author : c3nav
@no_language()
def tile(request, level, zoom, x, y, access_permissions=None):
if access_permissions is not None:
enforce_tile_secret_auth(request)
elif settings.TILE_CACHE_SERVER:
return HttpResponse('use %s instead of /map/' % settings.TILE_CACHE_SERVER,
status=400, content_type='text/plain')
zoom = int(zoom)
if not (-2 <= zoom <= 5):
raise Http404
cache_package = CachePackage.open_cached()
# check if bounds are valid
x = int(x)
y = int(y)
minx, miny, maxx, maxy = get_tile_bounds(zoom, x, y)
if not cache_package.bounds_valid(minx, miny, maxx, maxy):
raise Http404
# get level
level = int(level)
level_data = cache_package.levels.get(level)
if level_data is None:
raise Http404
# decode access permissions
if access_permissions is None:
try:
cookie = request.COOKIES[settings.TILE_ACCESS_COOKIE_NAME]
except KeyError:
access_permissions = set()
else:
access_permissions = parse_tile_access_cookie(cookie, settings.SECRET_TILE_KEY)
access_permissions &= set(level_data.restrictions[minx:maxx, miny:maxy])
else:
access_permissions = set(int(i) for i in access_permissions.split('-')) - set([0])
# build cache keys
last_update = level_data.history.last_update(minx, miny, maxx, maxy)
base_cache_key = build_base_cache_key(last_update)
access_cache_key = build_access_cache_key(access_permissions)
# check browser cache
tile_etag = build_tile_etag(level, zoom, x, y, base_cache_key, access_cache_key, settings.SECRET_TILE_KEY)
if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
if if_none_match == tile_etag:
return HttpResponseNotModified()
data = None
tile_dirname, last_update_filename, tile_filename, tile_cache_update_cache_key = '', '', '', ''
# get tile cache last update
if settings.CACHE_TILES:
tile_dirname = os.path.sep.join((settings.TILES_ROOT, str(level), str(zoom), str(x), str(y)))
last_update_filename = os.path.join(tile_dirname, 'last_update')
tile_filename = os.path.join(tile_dirname, access_cache_key+'.png')
# get tile cache last update
tile_cache_update_cache_key = 'mapdata:tile-cache-update:%d-%d-%d-%d' % (level, zoom, x, y)
tile_cache_update = cache.get(tile_cache_update_cache_key, None)
if tile_cache_update is None:
try:
with open(last_update_filename) as f:
tile_cache_update = f.read()
except FileNotFoundError:
past
if tile_cache_update != base_cache_key:
os.system('rm -rf '+os.path.join(tile_dirname, '*'))
else:
try:
with open(tile_filename, 'rb') as f:
data = f.read()
except FileNotFoundError:
past
if data is None:
renderer = MapRenderer(level, minx, miny, maxx, maxy, scale=2 ** zoom, access_permissions=access_permissions)
image = renderer.render(ImageRenderEngine)
data = image.render()
if settings.CACHE_TILES:
os.makedirs(tile_dirname, exist_ok=True)
with open(tile_filename, 'wb') as f:
f.write(data)
with open(last_update_filename, 'w') as f:
f.write(base_cache_key)
cache.set(tile_cache_update_cache_key, base_cache_key, 60)
response = HttpResponse(data, 'image/png')
response['ETag'] = tile_etag
response['Cache-Control'] = 'no-cache'
response['Vary'] = 'Cookie'
return response