Error Creating Demo Extension Following Developer Guide

[pbragamiranda]

Environment

Ubuntu 22.04.3 LTS

Bug description

Hi everyone,

I'm trying to create my first extension following the development tutorial but running into issues.

After copying the code to main.py, I attempted to run the file using the recommended Debugging & Logging approach, but I encountered an error.

I've looked into the extension.py class in the Ulauncher repository for debugging, but I didn't have much luck.

Here are my logs:

VERBOSE=1 ULAUNCHER_WS_API=ws://127.0.0.1:5054 python3 ~/.local/share/ulauncher/extensions/kagi-search/main.py

kagi-search | 2023-12-04 21:46:18,674 | ERROR | ulauncher.api.client.Client: on_error() | WS Client error Connection to the remote host was lost.
kagi-search | 2023-12-04 21:46:18,674 | ERROR | websocket: error() | error from callback <function Client.connect.<locals>.<lambda> at 0x7f78dce34670>: Client.connect.<locals>.<lambda>() takes 1 positional argument but 3 were given
kagi-search | 2023-12-04 21:46:18,674 | ERROR | ulauncher.api.client.Client: on_error() | WS Client error Client.connect.<locals>.<lambda>() takes 1 positional argument but 3 were given

python3 -V

Python 3.10.12

thanks in advance!

Log output

kagi-search | 2023-12-04 21:46:18,674 | ERROR | ulauncher.api.client.Client: on_error() | WS Client error Connection to the remote host was lost.
kagi-search | 2023-12-04 21:46:18,674 | ERROR | websocket: error() | error from callback <function Client.connect.<locals>.<lambda> at 0x7f78dce34670>: Client.connect.<locals>.<lambda>() takes 1 positional argument but 3 were given
kagi-search | 2023-12-04 21:46:18,674 | ERROR | ulauncher.api.client.Client: on_error() | WS Client error Client.connect.<locals>.<lambda>() takes 1 positional argument but 3 were given

Communication guidelines

• I have read and agree with Ulauncher's communication guidelines and checked the troubleshooting page for self-help.

Not an extension issue

• This issue applies to the Ulauncher application, not a specific extension.

Ulauncher v6

• I have made sure the bug isn't already fixed in v6.

[friday]

It's probably because of #1274.

You can copy your extension to ~/.local/share/ulauncher/extensions/your-extension
Then kill ulauncher (systemctl --user stop ulauncher if you are using systemd) and run ulauncher -v --dev in a terminal to get log output.

Also see #869. This is all changed now for v6. I never used the documented way and it's now unsupported/removed in v6 which will basically do the above but in more convenient ways without requiring restarts.

[pbragamiranda]

Hey, @friday. Thanks for your reply.

I'm able to get the logs output when I run ulauncher -v --dev. My problem is when I try to run the basic example extension listed on the development tutorial.

When I run: VERBOSE=1 ULAUNCHER_WS_API=ws://127.0.0.1:5054 python3 ~/.local/share/ulauncher/extensions/kagi-search/main.py

I get:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/ulauncher/utils/SimpleWebSocketServer.py", line 273, in _handleData
    self.handleConnected()
  File "/usr/lib/python3/dist-packages/ulauncher/api/server/ExtensionController.py", line 98, in handleConnected
    raise Exception('Incorrect path %s' % self.request.path)
Exception: Incorrect path /

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/ulauncher/utils/SimpleWebSocketServer.py", line 659, in serveforever
    client._handleData()
  File "/usr/lib/python3/dist-packages/ulauncher/utils/SimpleWebSocketServer.py", line 275, in _handleData
    raise Exception('handshake failed: %s' % e) from e
Exception: handshake failed: Incorrect path /