def update_headers(self, resp):
headers = resp.headers
if 'expires' in headers:
return {}
if 'cache-control' in headers and headers['cache-control'] != 'public':
return {}
if resp.status not in self.cacheable_by_default_statuses:
return {}
if 'date' not in headers or 'last-modified' not in headers:
return {}
date = calendar.timegm(parsedate_tz(headers['date']))
last_modified = parsedate(headers['last-modified'])
if date is None or last_modified is None:
return {}
now = time.time()
current_age = max(0, now - date)
delta = date - calendar.timegm(last_modified)
freshness_lifetime = max(0, min(delta / 10, 24 * 3600))
if freshness_lifetime <= current_age:
return {}
expires = date + freshness_lifetime
return {'expires': time.strftime(TIME_FMT, time.gmtime(expires))}
def update_headers(self, resp):
headers = resp.headers
if "expires" in headers:
return {}
if "cache-control" in headers and headers["cache-control"] != "public":
return {}
if resp.status not in self.cacheable_by_default_statuses:
return {}
if "date" not in headers or "last-modified" not in headers:
return {}
date = calendar.timegm(parsedate_tz(headers["date"]))
last_modified = parsedate(headers["last-modified"])
if date is None or last_modified is None:
return {}
now = time.time()
current_age = max(0, now - date)
delta = date - calendar.timegm(last_modified)
freshness_lifetime = max(0, min(delta / 10, 24 * 3600))
if freshness_lifetime <= current_age:
return {}
expires = date + freshness_lifetime
return {"expires": time.strftime(TIME_FMT, time.gmtime(expires))}
def update_headers(self, response):
headers = {}
if 'expires' not in response.headers:
date = parsedate(response.headers['date'])
expires = expire_after(timedelta(days=1), date=datetime(*date[:6]))
headers['expires'] = datetime_to_header(expires)
headers['cache-control'] = 'public'
return headers
def update_headers(self, response):
headers = {}
if "expires" not in response.headers:
date = parsedate(response.headers["date"])
expires = expire_after(timedelta(days=1), date=datetime(*date[:6]))
headers["expires"] = datetime_to_header(expires)
headers["cache-control"] = "public"
return headers