How to use multiple aws cognito userpools in addauthentication in a asp net co

Introduction

ASP.NET is a popular programming language used for building web applications. It provides a powerful for developing and interactive websites. One common in web development is the need to authenticate . AWS Cognito is a user authentication and authorization service provided by Amazon Web Services. In this article, we will explore how to use multiple AWS Cognito user pools in the AddAuthentication method in an ASP.NET Core application.

Setting up AWS Cognito User Pools

Before we can start using multiple AWS Cognito user pools in our ASP.NET Core application, we need to set them up in the AWS . Follow these steps:

  1. Log in to the AWS Management Console.
  2. Navigate to the AWS Cognito service.
  3. multiple user pools by clicking on the “Create a user pool” button.
  4. Configure each user pool with the desired settings, such as user attributes, password policies, and MFA .
  5. Make a note of the user pool IDs for each user pool that you create.

Configuring Multiple User Pools in ASP.NET Core

Once we have set up the user pools in AWS Cognito, we can configure them in our ASP.NET Core application. Open the Startup.cs file and locate the ConfigureServices method. Add the following code:


services.AddAuthentication()
    .AddCognito(options =>
    {
        options.UserPoolId = "user-pool-id-1";
        options.ClientId = "-id-1";
    })
    .AddCognito(options =>
    {
        options.UserPoolId = "user-pool-id-2";
        options.ClientId = "client-id-2";
    });

In the above code, we are using the AddCognito method to configure multiple user pools. Replace user-pool-id-1 and client-id-1 with the actual user pool ID and client ID of the first user pool. Similarly, replace user-pool-id-2 and client-id-2 with the actual user pool ID and client ID of the second user pool.

Using Multiple User Pools in Controllers

Now that we have configured multiple user pools in our ASP.NET Core application, we can use them in our controllers. Let's say we have a controller named HomeController with an action method named Login. We can specify the user pool to be used for authentication by adding the [Authorize] attribute with the desired user pool name as a parameter. Here's an example:


[Authorize(AuthenticationSchemes = "CognitoUserPool1")]
 IActionResult Login()
{
    // Code for login action
}

In the above code, we are specifying the CognitoUserPool1 as the authentication scheme for the Login action. Replace CognitoUserPool1 with the desired user pool name that you want to use for authentication.

Conclusion

In this article, we have learned how to use multiple AWS Cognito user pools in the AddAuthentication method in an ASP.NET Core application. By following the steps outlined above, you can configure and use multiple user pools for user authentication in your web application. This flexibility allows you to handle different user pools with different settings and requirements.

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