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databricks.labs.dqx.checks_resolver

resolve_check_function​

def resolve_check_function(function_name: str,
                           custom_check_functions: dict[str, Callable]
                           | None = None,
                           fail_on_missing: bool = True) -> Callable | None

Resolves a function by name from the predefined functions and custom checks.

Arguments:

  • function_name - name of the function to resolve.
  • custom_check_functions - dictionary with custom check functions (e.g. globals() of the calling module).
  • fail_on_missing - if True, raise an AttributeError if the function is not found.

Returns:

function or None if not found.

resolve_custom_check_functions_from_path​

def resolve_custom_check_functions_from_path(
        check_functions: dict[str, str] | None = None) -> dict[str, Callable]

Resolve custom check functions from a path in the local filesystem, Databricks workspace, or Unity Catalog volume.

Arguments:

  • check_functions - a mapping where each key is the name of a function (e.g., "my_func") and each value is the file path to the Python module that defines it. The path can be absolute or relative to the installation folder, and may refer to a local filesystem location, a Databricks workspace path (e.g. /Workspace/my_repo/my_module.py), or a Unity Catalog volume (e.g. /Volumes/catalog/schema/volume/my_module.py).

Returns:

A dictionary mapping function names to the actual function objects.