cr-connect-workflow/crc/services/error_service.py

# known_errors
#   key - something we can search for in an error message.
#   both_message - human readable message return to the user if error occurs in both
#   required_message - human readable message return to the user if error only occurs in required
#   all_message -human readable message return to the user if error only occurs in all
#
known_errors = [{'key': 'Error is Non-default exclusive outgoing sequence flow  without condition',
                 'message': 'Missing condition', 'hint': 'Add a Condition Type to your gateway path.'}]
generic_message = """Workflow validation failed. For more information about the error, see below."""

class ValidationErrorService(object):

    """Validation Error Service interprets messages return from api.workflow.validate_workflow_specification
       Validation is run twice,
       once  where we try to fill in all form fields
       and a second time where we only fill in the required fields.

       We get a list that contains possible errors from the validation."""

    @staticmethod
    def interpret_validation_errors(errors):
        if len(errors) == 0:
            return ()
        hint = ''

        for known_error in known_errors:
            if known_error['key'] in errors['all'].message:

                # in both error all and error required
                if known_error['key'] in errors['required'].message:
                    if 'both_hint' in known_error.keys():
                        hint = known_error['both_hint']
                    if 'both_message' in known_error.keys():
                        message = known_error['both_message']

                # just in error all
                else:
                    pass

            # just in error required
            if known_error['key'] in errors['required'].message:
                pass

        return errors