def _create_autoload_property()

in boto3/resources/factory.py [0:0]

• 21 lines of code
• 8 McCabe index (conditional complexity)

    def _create_autoload_property(factory_self, resource_name, name,
                                  snake_cased, member_model, service_context):
        """
        Creates a new property on the resource to lazy-load its value
        via the resource's ``load`` method (if it exists).
        """
        # The property loader will check to see if this resource has already
        # been loaded and return the cached value if possible. If not, then
        # it first checks to see if it CAN be loaded (raise if not), then
        # calls the load before returning the value.
        def property_loader(self):
            if self.meta.data is None:
                if hasattr(self, 'load'):
                    self.load()
                else:
                    raise ResourceLoadException(
                        '{0} has no load method'.format(
                            self.__class__.__name__))

            return self.meta.data.get(name)

        property_loader.__name__ = str(snake_cased)
        property_loader.__doc__ = docstring.AttributeDocstring(
            service_name=service_context.service_name,
            resource_name=resource_name,
            attr_name=snake_cased,
            event_emitter=factory_self._emitter,
            attr_model=member_model,
            include_signature=False
        )

        return property(property_loader)