o h @sXddlmZddlmZddlmZddlmZmZer"ddl m Z GdddeZ dS) ) annotations) TYPE_CHECKING)TTLCache) SessionInfoSessionStorage)MutableMappingc@sHeZdZdZ  ddd d ZdddZdddZdddZdddZdS) MemorySessionStoragezA SessionStorage that stores sessions in memory. At most maxsize sessions are stored with a TTL of ttl seconds. This class is really just a thin wrapper around cachetools.TTLCache that complies with the SessionStorage protocol. xmaxsizeint ttl_secondsreturnNonecCst||d|_dS)aInstantiate a new MemorySessionStorage. Parameters ---------- maxsize The maximum number of sessions we allow to be stored in this MemorySessionStorage. If an entry needs to be removed because we have exceeded this number, either - an expired entry is removed, or - the least recently used entry is removed (if no entries have expired). ttl_seconds The time in seconds for an entry added to a MemorySessionStorage to live. After this amount of time has passed for a given entry, it becomes inaccessible and will be removed eventually. )r ttlN)r_cache)selfr r r\/var/www/vscode/kcb/lib/python3.10/site-packages/streamlit/runtime/memory_session_storage.py__init__)s zMemorySessionStorage.__init__ session_idstrSessionInfo | NonecCs|j|dSN)rgetrrrrrrCzMemorySessionStorage.get session_inforcCs||j|jj<dSr)rsessionid)rrrrrsaveFszMemorySessionStorage.savecCs |j|=dSr)rrrrrdeleteIs zMemorySessionStorage.deletelist[SessionInfo]cCst|jSr)listrvalues)rrrrr#LrzMemorySessionStorage.listN)r r )r r r r rr)rrrr)rrrr)rrrr)rr") __name__ __module__ __qualname____doc__rrr r!r#rrrrrs   rN) __future__rtypingr cachetoolsr!streamlit.runtime.session_managerrrcollections.abcrrrrrrs