util.py 文件源码

def coerce_cache_params(params):
    rules = [
        ('data_dir', (str, types.NoneType), "data_dir must be a string "
         "referring to a directory."),
        ('lock_dir', (str, types.NoneType), "lock_dir must be a string referring to a "
         "directory."),
        ('type', (str,), "Cache type must be a string."),
        ('enabled', (bool, types.NoneType), "enabled must be true/false "
         "if present."),
        ('expire', (int, types.NoneType), "expire must be an integer representing "
         "how many seconds the cache is valid for"),
        ('regions', (list, tuple, types.NoneType), "Regions must be a "
         "comma seperated list of valid regions")
    ]
    return verify_rules(params, rules)