waiters.py 文件源码

def _build_waiter_state_cmd(self, waiter_name):
        # Get the waiter
        waiter_config = self._model.get_waiter(waiter_name)

        # Create the cli name for the waiter operation
        waiter_cli_name = xform_name(waiter_name, '-')

        # Obtain the name of the service operation that is used to implement
        # the specified waiter.
        operation_name = waiter_config.operation

        # Create an operation object to make a command for the waiter. The
        # operation object is used to generate the arguments for the waiter
        # state command.
        operation_model = self._service_model.operation_model(operation_name)

        waiter_state_command = WaiterStateCommand(
            name=waiter_cli_name, parent_name='wait',
            operation_caller=WaiterCaller(self._session, waiter_name),
            session=self._session,
            operation_model=operation_model,
        )
        # Build the top level description for the waiter state command.
        # Most waiters do not have a description so they need to be generated
        # using the waiter configuration.
        waiter_state_doc_builder = WaiterStateDocBuilder(waiter_config)
        description = waiter_state_doc_builder.build_waiter_state_description()
        waiter_state_command.DESCRIPTION = description
        return waiter_state_command