How to obtain the latest BGP or IGP routing table from FRR in realtime?

[wangchong2023]

I want to obtain the latest BGP routing table in FRR in real time. Is there any interface or method to obtain it? Similarly, how to obtain the routing table of the IGP protocol?

[ton31337]

What is real-time? Can you define a more detailed explanation of what you want to achieve?

[wangchong2023]

@ton31337
Real-time means that when the BGP or IGP routing table changes, it can be perceived by external programs through some API interface (such as Yang, HTTP, etc.) or other methods.

[ton31337]

BGP BMP protocol and/or Zebra FPM (dplane_fpm_nl). The structure is defined here https://docs.frrouting.org/projects/dev-guide/en/latest/fpm.html#dplane-fpm-nl.