v 0.15.15 appears to be loading schemas for a long time and doesn't recognise json ARM templates as such

[WillParry]

Apologies, I'm not sure how best to log this, so please bear with me.

I've just reverted vscode-azurearmtools on my PC / laptop to 0.15.13 in an attempt to avoid the issues I've been seeing on 0.15.15. Before this, the extension appeared to be loading, or loading the schemas for a really long time, maybe indefinitely.

I had a warning when viewing a template file, that it wasn't a template file, even though the schema was at the top of the page. When I tried to select language mode and select Azure Resource Manager Template (arm-template) it selects, the drop down disappears, but it still shows {} JSON at the bottom of the VS Code screen. And shows "Loading ARM schemas". I previously had a warning for old schema reference, so updated from the 2015-01-01 which the Azure Portal generates when downloading templates to 2019-04-01 which seems to be the latest. I'm not sure if changing the template schema 2019-04-01 is what caused the problem.

Apologies if this isn't the standard way to log an issue for this. Happy to add necessary details and clear down some of this if it could make things clearer. Thanks.

[WillParry]

Possibly an issue with conflicting extensions in VS Code. Disabled a few other JSON related extensions and now working a bit better.

Not closing straight away, I wasn't actually planning to open, but clicked on something I thought might give an option to save as a draft issue, but didn't.

Leaving open for now in case anyone else has similar experiences. However happy for moderators or whoever to close if that's normal. Thanks.

[StephenWeatherford]

No worries, thanks for taking time to report. A few comments:

I had a warning when viewing a template file, that it wasn't a template file, even though the schema was at the top of the page.

Not sure what would cause that. Are you still getting it? What exaxctly does it say?

When I tried to select language mode and select Azure Resource Manager Template (arm-template) it selects, the drop down disappears, but it still shows {} JSON at the bottom of the VS Code screen.

That definitely seems weird. Make sure you're using the most recent version of vscode, or at least 1.90.0 (see #1838). And if you're on vscode insiders, try the non-insiders version.

updated from the 2015-01-01 which the Azure Portal generates when downloading templates to 2019-04-01 which seems to be the latest. I'm not sure if changing the template schema 2019-04-01 is what caused the problem.

It is possible, yes. 2015-01-01 is no longer being updated I think, which means 2019-04-01 gets all the latest schemas. Unfortunately, the number of available schemas has skyrocketed, more than the extension's language server was designed for, and that is causing reports of long loading times and high memory usage. Unfortunately, we don't currently have have plans to fix this due to resources and priorities, and since our focus and recommendation is now to use Bicep when possible. If changing back to 2015-01-01 resolves the problems and you can live with not having up-to-date schema information, that might be your best option for now.

[WillParry]

It is possible, yes. 2015-01-01 is no longer being updated I think, which means 2019-04-01 gets all the latest schemas. Unfortunately, the number of available schemas has skyrocketed, more than the extension's language server was designed for, and that is causing reports of long loading times and high memory usage. Unfortunately, we don't currently have have plans to fix this due to resources and priorities, and since our focus and recommendation is now to use Bicep when possible. If changing back to 2015-01-01 resolves the problems and you can live with not having up-to-date schema information, that might be your best option for now.

This makes total sense. Thanks so much for taking the time to respond.