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only calculate access cache key if needed

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This commit is contained in:
Laura Klünder 2017-11-21 15:16:30 +01:00
parent ab0e4a46a0
commit fb573eefb8
1 changed files with 10 additions and 9 deletions
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19
src/c3nav/tileserver/wsgi.py
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@ -154,21 +154,22 @@ class TileServer:
if level_data is None:
return self.not_found(start_response, b'invalid level.')
# build cache keys
last_update = level_data.history.last_update(minx, miny, maxx, maxy)
base_cache_key = build_base_cache_key(last_update)
# decode access permissions
access_permissions = set()
access_cache_key = '0'
cookie = env.get('HTTP_COOKIE', None)
if cookie:
cookie = self.cookie_regex.search(cookie)
if cookie:
cookie = cookie.group(2)
access_permissions = (parse_tile_access_cookie(cookie, self.tile_secret) &
set(level_data.restrictions[minx:miny, maxx:maxy]))
else:
access_permissions = set()
# 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)
access_permissions = (parse_tile_access_cookie(cookie, self.tile_secret) &
set(level_data.restrictions[minx:miny, maxx:maxy]))
access_cache_key = build_access_cache_key(access_permissions)
# check browser cache
if_none_match = env.get('HTTP_IF_NONE_MATCH')