Source code for ray.rllib.utils.deprecation

import logging

logger = logging.getLogger(__name__)

# A constant to use for any configuration that should be deprecated
# (to check, whether this config has actually been assigned a proper value or
# not).
DEPRECATED_VALUE = -1


[docs]def deprecation_warning(old, new=None, error=None): """ Logs (via the `logger` object) or throws a deprecation warning/error. Args: old (str): A description of the "thing" that is to be deprecated. new (Optional[str]): A description of the new "thing" that replaces it. error (Optional[bool,Exception]): Whether or which exception to throw. If True, throw ValueError. """ msg = "`{}` has been deprecated.{}".format( old, (" Use `{}` instead.".format(new) if new else "")) if error is True: raise ValueError(msg) elif error and issubclass(error, Exception): raise error(msg) else: logger.warning("DeprecationWarning: " + msg + " This will raise an error in the future!")
[docs]def renamed_class(cls, old_name): """Helper class for renaming classes with a warning.""" class DeprecationWrapper(cls): # note: **kw not supported for ray.remote classes def __init__(self, *args, **kw): new_name = cls.__module__ + "." + cls.__name__ deprecation_warning(old_name, new_name) cls.__init__(self, *args, **kw) DeprecationWrapper.__name__ = cls.__name__ return DeprecationWrapper
[docs]def renamed_agent(cls): """Helper class for renaming Agent => Trainer with a warning.""" class DeprecationWrapper(cls): def __init__(self, config=None, env=None, logger_creator=None): old_name = cls.__name__.replace("Trainer", "Agent") new_name = cls.__module__ + "." + cls.__name__ deprecation_warning(old_name, new_name) cls.__init__(self, config, env, logger_creator) DeprecationWrapper.__name__ = cls.__name__ return DeprecationWrapper
[docs]def renamed_function(func, old_name): """Helper function for renaming a function.""" def deprecation_wrapper(*args, **kwargs): new_name = func.__module__ + "." + func.__name__ deprecation_warning(old_name, new_name) return func(*args, **kwargs) deprecation_wrapper.__name__ = func.__name__ return deprecation_wrapper
def moved_function(func): new_location = func.__module__ deprecation_warning("import {}".format(func.__name__), "import {}".format(new_location)) return func