Register authentication schemes based on tenant in asp.net core 3.1

Question

Currently, I have created an Identity server 4 web application with external login providers with default client id and secrets. But my goal is to register the authentication providers like Azure, Google, Facebook based on tenant.

I have used SaasKit multi-tenancy assembly, here I have tried app.usepertenant() middleware. But UseGoogleAuthentication() method is obsolete, so i could not achieve multi-tenant authentication using this usepertenant middleware.

Current code,

services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
   .AddMicrosoftAccount(option =>
     {
        option.ClientId = "clientid";
        option.ClientSecret = "clientsecret";
        option.SaveTokens = true;
     });

Expected code is like below,

var authentication = services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme);

if (tenant.hasMicrosoft)
{
   authentication.AddMicrosoftAccount(option =>
   {
        option.ClientId = "clientid";
        option.ClientSecret = "clientsecret";
        option.SaveTokens = true;
   });
}

if (tenant.hasGoogle)
{
   authentication.AddGoogle(option =>
   {
        option.ClientId = "clientid";
        option.ClientSecret = "clientsecret";
        option.SaveTokens = true;
   });
}

authentication.AddCookie( options =>
 {
    options.SlidingExpiration = true;
    options.ExpireTimeSpan = new TimeSpan(7, 0, 0, 0);
 });

Answer 1

See the official MS docs, Authentication providers per tenant

ASP.NET Core framework does not have a built-in solution for multi-tenant authentication. While it's certainly possible for customers to write one, using the built-in features, we recommend customers to look into Orchard Core for this purpose.