Make Klara compatible with Python3 / replace torndb module

[Nono-m0le]

Is your feature request related to a problem? Please describe.

As python2 reaching end of life. I tried to upgrade my system, which doesn't come with python2 anymore.
My first attempt to manual install python2 (and especially the mysql module) failed, so I start digging if a transition to python3 wasn't going to be more straight forward.

I endup on a dead-end because (at least) the dispachter use the "tornado" and "torndb" module which isn't supported anymore.

Even though they still exists:

$ python3 --version
Python 3.10.6

$ python3 -m pip list | grep torn
tornado                6.3.2
torndb                 0.3

$ ./klara-dispatcher
Traceback (most recent call last):
  File "/dispatcher/./klara-dispatcher", line 9, in <module>
    import torndb
  File "/.local/lib/python3.10/site-packages/torndb.py", line 260, in <module>
    CONVERSIONS[field_type] = [(FLAG.BINARY, str)] + CONVERSIONS[field_type]
TypeError: can only concatenate list (not "type") to list

Thus the question, would it be possible to port the project to python3 using "recent" or at least still maintain library ?

Maybe tornado/torndb aren't the only one who'll need a rewrite.

[xdanx]

Hey!

Thanks for the feedback. Yes, I 100% agree with you. torndb module needs replacement. They specify in their code that torndb is not compatible with Python 3.

Indeed, this is an issue I have to handle soon.

I'll add it to my todo list with priority.

[Nono-m0le]

It turns out, making it run (without error, maybe not on an ideal way) is straight forward.
The bigger part turns out to be moving the web app code from CodeIgniter 3 to CodeIgniter4 in order to support PHP8.

Do you have any ETA for this @xdanx ?

[Nono-m0le]

Hi @xdanx as you may have seen, I've created a PR for the "migration" to python2 to python3 (it's more a wrapper of the turndb module), you can see it here : #32

I'm still very interesting to know the future for the project to support PHP8. Would it be an upgrade of CI3 or migration to CI4 ?