<s> """<STR_LIT>""" <EOL> import time <EOL> import threading <EOL> try : <EOL> from hydra import UpdatingBloomFilter , WritingBloomFilter <EOL> except ImportError : <EOL> raise Exception ( "<STR_LIT>" ) <EOL> class StoqBloomFilter ( object ) : <EOL> def query_filter ( self , item , add_missing = False ) : <EOL> """<STR_LIT>""" <EOL> item_present = self . current_filter . contains ( item ) <EOL> if add_missing and not item_present : <EOL> self . current_filter . add ( item ) <EOL> return item_present <EOL> def create_filter ( self , filepath , size , falsepos_rate ) : <EOL> """<STR_LIT>""" <EOL> self . current_filter = WritingBloomFilter ( int ( size ) , float ( falsepos_rate ) , <EOL> filename = filepath ) <EOL> def import_filter ( self , filepath ) : <EOL> """<STR_LIT>""" <EOL> self . current_filter = UpdatingBloomFilter ( filepath ) <EOL> def backup_scheduler ( self , interval ) : <EOL> """<STR_LIT>""" <EOL> backup = threading . Thread ( target = self . _backup , args = ( int ( interval ) , ) ) <EOL> backup . daemon = True <EOL> backup . start ( ) <EOL> def _backup ( self , interval ) : <EOL> """<STR_LIT>""" <EOL> if interval > <NUM_LIT:0> : <EOL> while True : <EOL> time . sleep ( interval ) <EOL> self . current_filter . fdatasync ( ) <EOL> else : <EOL> self . current_filter . fdatasync ( ) </s>
