Expose discovered rosidle buffer backends through graph cache#889
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Signed-off-by: CY Chen <cyc@nvidia.com>
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Description
Pass discovered rosidl buffer backend metadata from Fast DDS user data into the shared graph cache.
Fast DDS already advertises and parses buffer backend metadata through endpoint user data. This change preserves that parsed metadata in graph endpoint info so tools such as
ros2 topic info -vcan display backend support for publishers and subscriptions.Is this user-facing behavior change?
Yes. Users can inspect Fast DDS topic endpoints and see advertised rosidl buffer backend support through ROS graph introspection tools.
Did you use Generative AI?
Yes. GPT-5.5 in Cursor was used to help draft changes in this pull request.
Additional Information
Depending on: