Make extensions and package available for Azure Data Studio

[SvenAelterman]

Azure Data Studio supports connecting to Data Explorer and Log Analytics Workspaces (but VS Code doesn't, AFAICT). It would be useful to have these extensions in Azure Data Studio too.

[rosshamish]

Sure! Do you know what's involved in publishing an extension to Azure Data Studio? Is it the same format? Contributions are welcome on this.

[SvenAelterman]

I don't know anything about extension publishing, but Azure Data Studio is based on VS Code. Hopefully it's quite consistent for extension development.

[rosshamish]

Looks like Data Studio uses a different publishing mechanism than VS Code. But, the packaging works the same (uses vsce to create a .vsix file).

Instead of publishing to the marketplace with vsce publish, it requires a PR to the data studio repo's "extensions gallery" config. https://docs.microsoft.com/en-us/sql/azure-data-studio/extensions/extension-authoring?view=sql-server-ver15#publish-an-extension

To publish your new extension to Azure Data Studio:

1. Add your extension to the extensions gallery.
2. We currently don't have support to host third-party extensions. Instead of downloading the extension, Azure Data Studio has the option to browse to a download page. To set a download page for your extension, set the value of the asset Microsoft.AzureDataStudio.DownloadPage.
3. Create a PR against release/extensions branch.
4. Send a review request to the team.

Your extension will be reviewed and added to the extensions gallery.

I found this example commit that publishes a new extension: microsoft/azuredatastudio@78a25b5

Updating the extension works the same way. Here's an example commit that updates an extension: microsoft/azuredatastudio@0a80051#diff-997b9baee31ff8ec334ef0a7a47820ce7b5224177aa78804ab92cf91409e6bef

So in theory, it's just as easy as opening a PR against that repo, adding an item to the extensions gallery JSON with the right files and so on. It'll definitely need a download URL for the vsix. I grabbed this download URL for this kuskus extension pack from its page on the VS Code extension marketplace, https://marketplace.visualstudio.com/_apis/public/gallery/publishers/rosshamish/vsextensions/kuskus-extensions-pack/1.0.10/vspackage, and I think that would work. I do see one other extension in the Data Studio gallery that uses a URL of this form.

If you want to take a stab at this, feel free. I'll be busy for a while and don't expect to be able to look into this.

Steps would be:

1. Publish all 4 extensions one time
2. Add logic to each of the *-publish.yml pipelines (e.g. https://github.com/rosshamish/kuskus/blob/master/.github/workflows/kusto-extensions-pack-publish.yml) to open an "update" PR automatically