Jupyter Server Provider Sample

This is a very simple extension sample demonstrating the use of the Jupyter Extension API allowing other extensions to contribute Jupyter Servers via the Kernel Picker for Jupyter notebooks:

• The sample extension finds Jupyter Servers running locally on the current machine
• This list of servers is then provided to the Jupyter extension via the Jupyter Extension API
• Upon opening a notebook and selecting a kernel the option Local JupyterLab Servers... will display the above servers.
• From there, the user can select a kernel and run code in the notebook against one of the local kernels.
• Sample showcases the use of the back button to allow the user to go back to the previous step.
• Sample showcases the use of custom quick picks to get additional information from the user.

Running this sample

1. cd jupyter-server-provider-sample
2. code .: Open the folder in VS Code
3. Run npm install in terminal to install dependencies
4. Run the Run Extension target in the Debug View. This will:
   • Start a task npm: watch to compile the code
   • Run the extension in a new VS Code window
5. Select the kernel Picker for a notebook and select the option Local JupyterLab Servers...
6. To see servers show up in this list, start JupyterLab or Jupyter Notebook outside VS Code or from within the integrated terminal (e.g. jupyter lab)

Guidelines

1. When displaying a custom UI in the kernel picker, please ensure to add a back button to allow the user to go back to the previous step. The sample shows the use of the back button and how throwing CancellationError vs returning undefined helps Jupyter extension distinguish between cancel vs back behaviour.
2. Minimize creating multiple collections, as this will result in multiple steps to selecting a kernel.