Calling Bird2 from Python script fails

[Maria Matejka]

Hello!
> On Mon, Nov 28, 2022 at 03:08:59PM +0000, Stavros Konstantaras via 
> Bird-users wrote:
>> And after closing the output file I proceed on calling subprocess with 
>> the "birdc configure" command.
> 
> You might consider sending the command directly to the control socket, 
> e.g. (no error handling!):
> 
> ```python
> import socket
> 
> with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as sock:
>      sock.connect('/run/bird/bird.ctl')
>      sock.send(b'configure\n')
>      # Assumption your config is under /etc/bird.conf
>      assert sock.recv(4096) == b'0002-Reading configuration from 
> /etc/bird.conf\n0003 Reconfigured\n'
> ```

This is horrible, yet understandable.

I hope we manage to include some machine-friendly control socket 
implementation in BIRD 3. It's gonna be based on CBOR format, hopefully 
distributed also with client Python libs, and if nobody in our team gets 
too angry with me for writing such a code, maybe also with an Ansible 
module allowing to write a nice-looking YAML definition.

Take this as my personal hopes … yet if you wanna say ±1 or whatever 
else to this, feel free to respond.

Maria

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