ros_sugar.launch._lifecycle_transition

Module Contents

Classes

LifecycleTransition

An action that simplifies execution of lifecycle transitions.

API

class ros_sugar.launch._lifecycle_transition.LifecycleTransition(*, lifecycle_node_names: Iterable[launch.SomeSubstitutionsType], transition_ids: Iterable[Union[int, launch.SomeSubstitutionsType]], **kwargs)

Bases: launch.action.Action

An action that simplifies execution of lifecycle transitions.

execute(context: launch.LaunchContext) → Optional[List[launch.action.Action]]

Execute the LifecycleTransition action.

:return Returns a list of actions to be executed to achieve specified transitions. These are EventHandlers and EventEmitters for ChangeState and StateTransition events of the nodes indicated.