from flask import current_app, request, session
from flask.ext.login import current_user
from babel import Locale
from apikit import cache_hash
from spendb import __version__
from spendb.core import babel
from spendb.views.error import NotModified
from spendb.views.home import blueprint as home
def get_locale():
if 'locale' in session:
return Locale.parse(session.get('locale'))
else:
requested = request.accept_languages.values()
requested = [l.replace('-', '_') for l in requested]
available = map(unicode, babel.list_translations())
return Locale.negotiate(available, requested)
@home.before_app_request
def before_request():
current_app.cubes_workspace.flush_lookup_cache()
request._http_etag = None
request._http_private = False
@home.after_app_request
def after_request(resp):
resp.headers['Server'] = 'SpenDB/%s' % __version__
if resp.is_streamed and request.endpoint != 'static':
# http://wiki.nginx.org/X-accel#X-Accel-Buffering
resp.headers['X-Accel-Buffering'] = 'no'
# skip cache under these conditions:
if not current_app.config.get('CACHE') \
or request.method not in ['GET', 'HEAD', 'OPTIONS'] \
or resp.status_code > 399:
resp.cache_control.no_cache = True
return resp
if request.endpoint == 'static':
resp.cache_control.max_age = 3600 * 6
resp.cache_control.public = True
if request._http_etag:
if not request._http_private:
resp.cache_control.public = True
else:
resp.cache_control.private = True
resp.cache_control.max_age = 3600 * 6
resp.cache_control.must_revalidate = True
resp.set_etag(request._http_etag)
return resp
def etag_cache_keygen(key_obj, private=False):
request._http_private = private
args = sorted(set(request.args.items()))
# jquery where is your god now?!?
args = filter(lambda (k, v): k != '_', args)
request._http_etag = cache_hash(args, current_user,
key_obj, get_locale())
if request.if_none_match == request._http_etag:
raise NotModified()
