radical.asyncflow.errors¶

DependencyFailure ¶

DependencyFailure(message, failed_dependencies=None, root_cause=None)

Bases: Exception

Exception raised when a workflow component cannot execute due to dependency failures.

This exception provides detailed information about the failed dependencies and maintains the chain of causation for debugging purposes.

Initialize DependencyFailure exception.

Parameters:

Name	Type	Description	Default
`message`	`str`	Human-readable error message	required
`failed_dependencies`	`list`	List of failed dependency names	`None`
`root_cause`	`Exception`	The original exception that caused the failure	`None`

Source code in doc_env/lib/python3.13/site-packages/radical/asyncflow/errors.py

def __init__(self, message, failed_dependencies=None, root_cause=None):
    """
    Initialize DependencyFailure exception.

    Args:
        message (str): Human-readable error message
        failed_dependencies (list, optional): List of failed dependency names
        root_cause (Exception, optional): The original exception that caused the failure
    """
    super().__init__(message)
    self.failed_dependencies = failed_dependencies or []
    self.root_cause = root_cause

    # Chain the exception if we have a root cause
    if root_cause:
        self.__cause__ = root_cause