def _queuestore(self):
data_dir = os.path.abspath(os.path.join('<STR_LIT>', '<STR_LIT:data>'))<EOL>if os.path.exists(data_dir):<EOL><INDENT>shutil.rmtree(data_dir)<EOL><DEDENT>os.makedirs(data_dir)<EOL>cp_ops = <NUM_LIT:100><EOL>cp_timeout = <NUM_LIT:20><EOL>store = DbmQueue(data_dir, checkpoint_operations=cp_ops,<EOL>checkpoint_timeout=cp_timeout)<EOL>return store<EOL>
Returns the configured L{QueueStore} instance to use.

Can be overridden by subclasses that wish to change out any queue store parameters.

@rtype: L{QueueStore}