Source code for apache_beam.utils.plugin

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"""A BeamPlugin base class.

For experimental usage only; no backwards-compatibility guarantees.
"""


[docs]class BeamPlugin(object): """Plugin base class to be extended by dependent users such as FileSystem. Any instantiated subclass will be imported at worker startup time."""
[docs] @classmethod def get_all_subclasses(cls): """Get all the subclasses of the BeamPlugin class.""" all_subclasses = [] for subclass in cls.__subclasses__(): all_subclasses.append(subclass) all_subclasses.extend(subclass.get_all_subclasses()) return all_subclasses
[docs] @classmethod def get_all_plugin_paths(cls): """Get full import paths of the BeamPlugin subclass.""" def fullname(o): return o.__module__ + "." + o.__name__ return [fullname(o) for o in cls.get_all_subclasses()]