How can I listen Qos event in java interface?

[jayhou]

Is there any way to listen Qos event in java implementation?

[jacobperron]

We've worked on support for QoS events in a fork; we are currently in the process of upstreaming changes (which will include QoS event support).

It's not a complete list, but here are some relevant PRs from our fork:

• Add support for events in subscriptions osrf/ros2_java#13
• Add subscription requested qos incompatible event osrf/ros2_java#14
• Add RequestedDeadlineMissed subscription event osrf/ros2_java#19
• Add LivelinessChanged subscription event osrf/ros2_java#18

Stay tuned.