validators.py 文件源码

def require_schema(schema):
    """This decorator verifies that request JSON matches given JSONSchema.

    http://json-schema.org
    """

    validator = jsonschema.Draft4Validator(
        schema,
        format_checker=jsonschema.FormatChecker()
    )

    def outer_decorator(func):
        @functools.wraps(func)
        def inner_decorator(self, *args, **kwargs):
            errors = validator.iter_errors(self.request_json)
            errors = [err.message for err in errors]

            if errors:
                LOG.warning("Cannot validate request: %s", errors)
                raise exceptions.InvalidJSONError(errors)

            return func(self, *args, **kwargs)

        return inner_decorator
    return outer_decorator