Configure services depending on the enabled feature

[VladimirLevchuk]

Hi,

What's the correct way to checking whether feature enabled from Startup.ConfigureServices?

I'd expect something like
services.AddForFeature(MyFeatures.RedisCache, x => x.Decorate<IMyService, MyCachedService>());

or
if (configuration.IsFeatureEnabled(MyFeatures.RedisCache)) { services.Decorate<IMyService, MyCachedService>(); }

but have not found a nice way of doing it. Have I missed something existing for this? Or such usage breaks design somehow?

[jimmyca15]

It breaks the pattern a bit because that would be attempting to consume the feature manager before the service provider has been built. Right now there is no clean built-in way to do this, you would have to build an intermediate service provider which is not a good approach.

By the way, are you looking for something similar to what is discussed in this issue Azure/AppConfiguration#68 ?

[VladimirLevchuk]

Sorry for late response, correct, it's a duplicate of the existing #39

[qin-guan]

hi, i have this code:

        services.AddHttpClient("ApiServices",
                    c => { c.BaseAddress = new Uri(Urls.ApiUrl); })
                .ConfigurePrimaryHttpMessageHandler(() =>
                {
                    if (disableSslCertValidation)
                    {
                        return new HttpClientHandler
                        {
                            ServerCertificateCustomValidationCallback =
                                (message, certificate, chain, sslPolicyErrors) => true
                        };
                    }
                    return new HttpClientHandler();
                })
                .AddTypedClient(RestService.IFor<ApiServices>);

which would need to use feature management in Startup.cs, is there a way to do this? it seems similar to the issue @VladimirLevchuk mentioned

[rossgrambo]

Closing as a duplicate of #39