Jupynium server stop as long as I save the *.ju.py file

[githubjacky]

First of all, thank you for creating such a beautiful plugin. I really appreciate your work.

Describe the bug
Can't save the *.ju.py while editing.

To Reproduce

1. ssh port forwarding for both nvim_listen_addr and notebook_URL
2. open the neovim and start the jupyter server in remote
3. open the jupynium server in local computer(no problem here)
4. save the *.ju.py file

Expected behavior
Jupynium server should not stop

Logs in /tmp/jupynium/logs/

jupynium.events_control: 197 - INFO - Event from nvim: Notification(type='notification', name='BufWritePre' jupynium.cmds.jupynium: 559 - INFO - Nvim has been closed. Detaching nvim.

Output of jupynium --version

Jupynium v0.2.2

Output of nvim --version

NVIM v0.9.5
Build type: Release
LuaJIT 2.1.1692716794

Additional context

[kiyoon]

Hi, did you save and close nvim? If the controlling nvim is no longer available, it will detach nvim.

[githubjacky]

Thanks for your reply! I didn't close the nvim. I just saved it.

P.S. I add more steps to reproduce the issue. Is it possible that the issue is actually related to ssh forwarding?

[kiyoon]

Unfortunately the log isn't very helpful in this case.. According to it, while running process_notification_event() in src/jupynium/event_control.py, it threw an OSError somewhere thus logging Nvim has been closed. Detaching nvim. in line 559 of src/jupynium/cmds/jupyniu.py. Is it possible for you to debug the code a little and let me know where the error is happening?

[kiyoon]

Before that, can you set auto_download_ipynb = false, in the jupynium settings? It might be due to that functionality.

[kiyoon]

I think I get what's going wrong.. You're editing a file e.g. /home/user/a.ju.py in a server, and jupynium is trying to download ipynb to the local /home/user/a.ipynb. And when the local directory doesn't exist, it throws an OSError.

[githubjacky]

Exactly! If I set auto_download_ipynb = false, I can save the *.ju.py file correctly! Thanks for your help!

[kiyoon]

Thanks for reporting the bug! If you find time, it would be helpful to test if #115 works well. You can install the branch fix/download-ipynb-exception.

[githubjacky]

No problem. After installing the PyPI package from that branch, I can save the *.ju.py file and the log that is generated after saving the file:

jupynium.events_control: 197 - INFO - Event from nvim: Notification(type='notification', name='BufWritePre', args=[1, '{ path }'])

jupynium.events_control: 673 - WARNING - Failed to auto-download ipynb with error: [Errno 2] No such file or directory: '{ path }'.
Maybe a remote nvim is used and the path { path } is not accessible on the local machine.


Note: { path } is the path of the jupyter notebook attach to the nvim

[kiyoon]

Thanks for testing! Looks good to go.