wehub-resource-sync
68 lines
2.6 KiB
Python
68 lines
2.6 KiB
Python
import logging
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from ray.train.v2.api.exceptions import ControllerError
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logger = logging.getLogger(__name__)
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class CallbackManager:
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def __init__(self, callbacks):
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self._callbacks = callbacks
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def _get_method(self, callback, hook_name: str):
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"""Look up a hook method on a callback, raising if missing."""
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callback_name = type(callback).__name__
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method = getattr(callback, hook_name, None)
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if method is None or not callable(method):
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raise ControllerError(
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AttributeError(
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f"Callback '{callback_name}' hook '{hook_name}' is missing "
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"or not callable."
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)
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)
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return method, callback_name
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def invoke(self, hook_name: str, *args, **context) -> None:
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for callback in self._callbacks:
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method, callback_name = self._get_method(callback, hook_name)
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try:
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method(*args, **context)
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except Exception as e:
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# TODO: Enable configuration to suppress exceptions.
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logger.exception(
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f"Exception raised in callback hook '{hook_name}' from callback "
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f"'{callback_name}'."
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)
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raise ControllerError(e) from e
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async def async_invoke(self, hook_name: str, *args, **context) -> None:
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for callback in self._callbacks:
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method, callback_name = self._get_method(callback, hook_name)
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try:
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await method(*args, **context)
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except Exception as e:
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# TODO: Enable configuration to suppress exceptions.
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logger.exception(
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f"Exception raised in callback hook '{hook_name}' from callback "
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f"'{callback_name}'."
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)
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raise ControllerError(e) from e
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def invoke_best_effort(self, hook_name: str, *args, **context) -> None:
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"""Invoke a hook on every callback, logging and suppressing errors.
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Unlike ``invoke``, this does not fail fast — every callback is
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attempted even if earlier ones raise. Used for cleanup hooks
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(e.g. ``before_controller_abort``) where partial execution is
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better than skipping remaining callbacks.
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"""
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for callback in self._callbacks:
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method, callback_name = self._get_method(callback, hook_name)
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try:
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method(*args, **context)
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except Exception as e:
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logger.exception(
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f"Error in callback hook '{hook_name}' from callback "
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f"'{callback_name}': {e}"
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)
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