def __initializeCache(self, dataHandler, cacheHandler):
"""
Check if the cache is outdated and, if necessary, compose it
using passed datahandler and cacheHandler. If cacheHandler
was specified as None, default on-disk JSON handler is used.
"""
if cacheHandler is None:
cacheHandler = JsonCacheHandler(os.path.join(self.__path, "cache"), self.__name, self._logger)
self._cacheHandler = cacheHandler
# Compare fingerprints from data and cache
cacheFp = cacheHandler.getFingerprint()
dataVersion = dataHandler.getVersion()
currentFp = "{}_{}_{}".format(self.name, dataVersion, eosVersion)
# If data version is corrupt or fingerprints mismatch,
# update cache
if dataVersion is None or cacheFp != currentFp:
if dataVersion is None:
msg = "data version is None, updating cache"
else:
msg = 'fingerprint mismatch: cache "{}", data "{}", updating cache'.format(cacheFp, currentFp)
self._logger.info(msg)
# Generate cache, apply customizations and write it
cacheData = CacheGenerator(self._logger).run(dataHandler)
CacheCustomizer().runBuiltIn(cacheData)
cacheHandler.updateCache(cacheData, currentFp)
def __initializeCache(self, dataHandler, cacheHandler):
"""
Check if the cache is outdated and, if necessary, compose it
using passed datahandler and cacheHandler. If cacheHandler
was specified as None, default on-disk JSON handler is used.
"""
if cacheHandler is None:
cacheHandler = JsonCacheHandler(os.path.join(self.__path, 'cache'),
self.__name, self._logger)
self._cacheHandler = cacheHandler
# Compare fingerprints from data and cache
cacheFp = cacheHandler.getFingerprint()
dataVersion = dataHandler.getVersion()
currentFp = '{}_{}_{}'.format(self.name, dataVersion, eosVersion)
# If data version is corrupt or fingerprints mismatch,
# update cache
if dataVersion is None or cacheFp != currentFp:
if dataVersion is None:
msg = 'data version is None, updating cache'
else:
msg = 'fingerprint mismatch: cache "{}", data "{}", updating cache'.format(
cacheFp, currentFp)
self._logger.info(msg)
# Generate cache, apply customizations and write it
cacheData = CacheGenerator(self._logger).run(dataHandler)
CacheCustomizer().runBuiltIn(cacheData)
cacheHandler.updateCache(cacheData, currentFp)
def __initializeData(self, dataHandler):
"""
Using passed dataHandler, compose on-disk cache if
necessary, load this cache in memory and return
cache handler which deals with it.
"""
cacheHandler = JsonCacheHandler(os.path.join(self.__path, 'cache'), self.name, self._logger)
# Compare fingerprints from data and cache
cacheFp = cacheHandler.getFingerprint()
dataVersion = dataHandler.getVersion()
currentFp = '{}_{}_{}'.format(self.name, dataVersion, eosVersion)
# If data version is corrupt or fingerprints mismatch,
# update cache
if dataVersion is None or cacheFp != currentFp:
if dataVersion is None:
msg = 'data version is None, updating cache'
else:
msg = 'fingerprint mismatch: cache "{}", data "{}", updating cache'.format(cacheFp, currentFp)
self._logger.info(msg)
# Generate cache, apply customizations and write it
cacheData = CacheGenerator(self._logger).run(dataHandler)
CacheCustomizer().runBuiltIn(cacheData)
cacheHandler.updateCache(cacheData, currentFp)
return cacheHandler
