#[repr(u32)]
pub enum LivelinessPolicy {
    SystemDefault,
    Automatic,
    ManualByNode,
    ManualByTopic,
    Unknown,
}
Expand description

QoS liveliness enumerations that describe a publisher’s reporting policy for its alive status. For a subscriber, these are its requirements for its topic’s publishers.

Variants

SystemDefault

Implementation specific default

Automatic

The signal that establishes a Topic is alive comes from the ROS rmw layer.

ManualByNode

👎 Deprecated

Explicitly asserting node liveliness is required in this case. This option is deprecated, use RMW_QOS_POLICY_LIVELINESS_MANUAL_BY_TOPIC if your application requires to assert liveliness manually.

ManualByTopic

The signal that establishes a Topic is alive is at the Topic level. Only publishing a message on the Topic or an explicit signal from the application to assert liveliness on the Topic will mark the Topic as being alive.

Unknown

Liveliness policy has not yet been set

Trait Implementations

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