ansible/changelogs/fragments/use-validator-in-ansiblemodule.yml

major_changes:
  - >-
    AnsibleModule - use ``ArgumentSpecValidator`` class for validating argument spec and remove
    private methods related to argument spec validation. Any modules using private methods
    should now use the ``ArgumentSpecValidator`` class or the appropriate validation function.
Use ArgumentSpecValidator in AnsibleModule (#73703) * Begin using ArgumentSpecValidator in AnsibleModule * Add check parameters to ArgumentSpecValidator Add additional parameters for specifying required and mutually exclusive parameters. Add code to the .validate() method that runs these additional checks. * Make errors related to unsupported parameters match existing behavior Update the punctuation in the message slightly to make it more readable. Add a property to ArgumentSpecValidator to hold valid parameter names. * Set default values after performining checks * FIx sanity test failure * Use correct parameters when checking sub options * Use a dict when iterating over check functions Referencing by key names makes things a bit more readable IMO. * Fix bug in comparison for sub options evaluation * Add options_context to check functions This allows the parent parameter to be added the the error message if a validation error occurs in a sub option. * Fix bug in apply_defaults behavior of sub spec validation * Accept options_conext in get_unsupported_parameters() If options_context is supplied, a tuple of parent key names of unsupported parameter will be created. This allows the full "path" to the unsupported parameter to be reported. * Build path to the unsupported parameter for error messages. * Remove unused import * Update recursive finder test * Skip if running in check mode This was done in the _check_arguments() method. That was moved to a function that has no way of calling fail_json(), so it must be done outside of validation. This is a silght change in behavior, but I believe the correct one. Previously, only unsupported parameters would cause a failure. All other checks would not be executed if the modlue did not support check mode. This would hide validation failures in check mode. * The great purge Remove all methods related to argument spec validation from AnsibleModule * Keep _name and kind in the caller and out of the validator This seems a bit awkward since this means the caller could end up with {name} and {kind} in the error message if they don't run the messages through the .format() method with name and kind parameters. * Double moustaches work I wasn't sure if they get stripped or not. Looks like they do. Neat trick. * Add changelog * Update unsupported parameter test The error message changed to include name and kind. * Remove unused import * Add better documentation for ArgumentSpecValidator class * Fix example * Few more docs fixes * Mark required and mutually exclusive attributes as private * Mark validate functions as private * Reorganize functions in validation.py * Remove unused imports in basic.py related to argument spec validation * Create errors is module_utils We have errors in lib/ansible/errors/ but those cannot be used by modules. * Update recursive finder test * Move errors to file rather than __init__.py * Change ArgumentSpecValidator.validate() interface Raise AnsibleValidationErrorMultiple on validation error which contains all AnsibleValidationError exceptions for validation failures. Return the validated parameters if validation is successful rather than True/False. Update docs and tests. * Get attribute in loop so that the attribute name can also be used as a parameter * Shorten line * Update calling code in AnsibleModule for new validator interface * Update calling code in validate_argument_spec based in new validation interface * Base custom exception class off of Exception * Call the __init__ method of the base Exception class to populate args * Ensure no_log values are always updated * Make custom exceptions more hierarchical This redefines AnsibleError from lib/ansible/errors with a different signature since that cannot be used by modules. This may be a bad idea. Maybe lib/ansible/errors should be moved to module_utils, or AnsibleError defined in this commit should use the same signature as the original. * Just go back to basing off Exception * Return ValidationResult object on successful validation Create a ValidationResult class. Return a ValidationResult from ArgumentSpecValidator.validate() when validation is successful. Update class and method docs. Update unit tests based on interface change. * Make it easier to get error objects from AnsibleValidationResultMultiple This makes the interface cleaner when getting individual error objects contained in a single AnsibleValidationResultMultiple instance. * Define custom exception for each type of validation failure These errors indicate where a validation error occured. Currently they are empty but could contain specific data for each exception type in the future. * Update tests based on (yet another) interface change * Mark several more functions as private These are all doing rather "internal" things. The ArgumentSpecValidator class is the preferred public interface. * Move warnings and deprecations to result object Rather than calling deprecate() and warn() directly, store them on the result object so the caller can decide what to do with them. * Use subclass for module arg spec validation The subclass uses global warning and deprecations feature * Fix up docs * Remove legal_inputs munging from _handle_aliases() This is done in AnsibleModule by the _set_internal_properties() method. It only makes sense to do that for an AnsibleModule instance (it should update the parameters before performing validation) and shouldn't be done by the validator. Create a private function just for getting legal inputs since that is done in a couple of places. It may make sense store that on the ValidationResult object. * Increase test coverage * Remove unnecessary conditional ci_complete * Mark warnings and deprecations as private in the ValidationResult They can be made public once we come up with a way to make them more generally useful, probably by creating cusom objects to store the data in more structure way. * Mark valid_parameter_names as private and populate it during initialization * Use a global for storing the list of additonal checks to perform This list is used by the main validate method as well as the sub spec validation. 2021-03-19 20:09:18 +01:00			`major_changes:`
			`- >-`
			AnsibleModule - use ``ArgumentSpecValidator`` class for validating argument spec and remove
			`private methods related to argument spec validation. Any modules using private methods`
			should now use the ``ArgumentSpecValidator`` class or the appropriate validation function.