o i@sdZddlZddlZddlZddlZz ddlmZmZWney-ddl mZmZYnwddl m Z m Z e eZGdddejZdS)zXGeneric functions and types for working with a TokenCache that is not platform specific.N) CrossPlatLock LockError)_mkdir_pPersistenceNotFoundcsDeZdZdZd fdd ZddZd fdd Zfd d ZZS) PersistedTokenCacheaA token cache backed by a persistence layer, coordinated by a file lock, to sustain a certain level of multi-process concurrency for a desktop app. The scenario is that multiple instances of same desktop app (or even multiple different apps) create their own ``PersistedTokenCache`` instances, which are all backed by the same token cache file on disk (known as a persistence). The goal is to have Single Sign On (SSO). Each instance of ``PersistedTokenCache`` holds a snapshot of the token cache in memory. Each :func:`~find` call will automatically reload token cache from the persistence when necessary, so that it will have fresh data. Each :func:`~modify` call will automatically reload token cache from the persistence when necessary, so that new writes will be appended on top of latest token cache data, and then the new data will be immediately flushed back to the persistence. Note: :func:`~deserialize` and :func:`~serialize` remain the same as their counterparts in the parent class ``msal.SerializableTokenCache``. In other words, they do not have the "reload from persistence if necessary" nor the "flush back to persistence" behavior. NcsVtt||rtj|n|d|_ttj |j||_ d|_ |j |_ dS)Nz .lockfiler) superr__init__ospath expanduserZ get_location_lock_locationrdirname _persistence _last_sync is_encrypted)self persistenceZ lock_location __class__R/home/app/Keep/.python/lib/python3.10/site-packages/msal_extensions/token_cache.pyr .s  zPersistedTokenCache.__init__cCsLz|j|jkr||jt|_WdSWdSty%YdSw)z1Reload cache from persistence layer, if necessaryN)rrZtime_last_modifiedZ deserializeloadtimer)rrrr_reload_if_necessary8s z(PersistedTokenCache._reload_if_necessarycsht|j%|tt|j|||d|j|t |_ WddS1s-wYdS)N)new_key_value_pairs) rr rrrmodifyrsave serializerr)rcredential_typeZ old_entryrrrrrDs   "zPersistedTokenCache.modifyc sxd}td|dD]0}z|Wnty+||kr(td|tdnYq wtt|j |fi|SgS)Nrz1Unable to load token cache file in No. %d attemptg?) ranger Exceptionloggerdebugrsleeprrsearch)rrkwargsretryattemptrrrr&Ns    zPersistedTokenCache.search)N) __name__ __module__ __qualname____doc__r rrr& __classcell__rrrrrs    r)r-r rloggingZmsalZ cache_lockrr ImportErrorZfilelockrrr getLoggerr*r#ZSerializableTokenCacherrrrrs