How to trigger options validation per tenant on startup?

[xperiandri]

According to #10229 (comment) I've moved all the tanant dependant services into

.AddOrchardCore()
    .ConfigureServices(svc ->
        ... tenant dependant services
    )

then I have options validation that must be triggered on startup

    member internal services.``AddPostgreSQL Options``(sectionName, [<Optional>] name) =
        services
            .AddSingleton<IValidateOptions<StorageOptions>, ValidatableOptionValidator<StorageOptions>>()
            .AddOptions<StorageOptions>(name)
            .Configure(fun options (shellConfiguration: IShellConfiguration) -> shellConfiguration.GetSection(StorageOptions.SectionName).Bind options)
            .BindConfiguration(sectionName)
            .ValidateOnStart()
            .Services

configuration and validation successfully happens when I access the tenant.
But I want that to happen on startup. And

"OrchardCore_BackgroundService": {
  "ShellWarmup": true
}

does not help with that.

What should I modify to achieve my goal of validating setting for all declared tenants on startup?

[xperiandri]

@jtkech how to force ValidationHostedService to run for each tenant on startup?
https://github.com/dotnet/runtime/blob/42687a9797341f7749ebb7bb316ce3b2f03682e4/src/libraries/Microsoft.Extensions.Hosting/src/OptionsBuilderExtensions.cs
https://github.com/dotnet/runtime/blob/9fc6427cd5f0f9d0f3eb3c2901bfaea80dc2ec18/src/libraries/Microsoft.Extensions.Hosting/src/ValidationHostedService.cs

[jtkech]

We can't register an IHostedService at the tenant level but there are other ways.

Here 3 ways I have in mind.

• You can use the ShellWarmup and define an IBackgroundTask to apply your logic.

• Or define a ModularTenantEvents and apply your logic in the ActivatingAsync() event. But to be run from the beginning you still need the ShellWarmup and at least one registered IBackgroundTask even if it does nothing.

• Or you can define a service Initializer.

        builder.ConfigureServices(tenantServices =>
        {
            tenantServices.Initialize(sp => // The delegate can be async "async sp =>"
            {
                var validators = sp.GetRequiredService<IOptions<ValidatorOptions> validatorOptions>();
                ...
                ...
  
                return Task.CompletedTask;
            });