[WebToolsE2E][Aspire] There is no intellisense of 'Parameters' in the appsettings.json file.

[v-cazhang]

REGRESSION INFO: New feature on Aspire 8.0 Preview 4

INSTALL STEPS

1. Clean machine: Win11 x64 23h2 ENU
2. Install 17.10.0 Preview 2.0 [34701.141.d17.10] (Includes Aspire 8.0.0-preview.4.24129.7)
3. Apply NuGet Feeds

REPRO STEPS

1. New Project > ASP.NET Core Empty project > 8.0 > check 'Enlist in Aspire Orchestration'
2. Right-click empty project > Add > Aspire component > install Aspire.Azure.Security.KeyVault
3. In the appsettings.json file of the empty project, type "" in the top of the file.

Notes:

1. It will meet Bug 1985774 when adding the aspire component.

ACTUAL
No intellisense of 'Parameters' shows

EXPECTED
Should contain 'Parameters' in the intellisense

[DamianEdwards]

@eerhardt do we need to update the schema generator?

[eerhardt]

@eerhardt do we need to update the schema generator?

This isn't the schema generator. Note that nothing in the web app uses the Parameters config section.

The thing that reads the Parameters config section is the app host.

aspire/src/Aspire.Hosting/ParameterResourceBuilderExtensions.cs

Lines 27 to 28 in 914760c

	var configurationKey = $"Parameters:{name}";
	return builder.Configuration[configurationKey] ?? throw new DistributedApplicationException($"Parameter resource could not be used because configuration key '{configurationKey}' is missing.");

aspire/src/Aspire.Hosting/ParameterResourceBuilderExtensions.cs

Lines 43 to 46 in 914760c

	Properties = [
	("parameter.secret", secret.ToString()),
	(CustomResourceKnownProperties.Source, connectionString ? $"ConnectionStrings:{name}" : $"Parameters:{name}")
	]

So if anything, we could ship a new JSON schema in Aspire.Hosting.AppHost that adds this section to the appsettings.json schema.

[DamianEdwards]

Ah of course, thanks. Putting on the backlog for now.

[vladimir-shirmanov]

Hello, @eerhardt
I would like to contribute, but not sure what I should do here.
My idea, as you said, is to add aspire-8.0-host.json schema to https://github.com/dotnet/aspire/tree/main/src/Schema folder.
But it could require publishing it to https://www.schemastore.org/json/ as well.
Plus, I'm not really sure what this Parameters property should be and do I need to copy https://json.schemastore.org/appsettings.json to this full schema.
I would really appreciate your thoughts on this one. Thank you in advance