How Do I Implement Federated Login With Social Identity Providers Through Cognito?

Introduction

In today’s digital landscape, providing users with the ability to log in using their existing social media accounts can significantly enhance user experience and streamline the authentication process. This guide will walk you through implementing federated login with social identity providers using AWS Cognito. We will focus on setting up a Cognito User Pool and configuring an Identity Provider (IdP) such as Google. Pulumi will be utilized to define and deploy the necessary resources efficiently.

Implementation Process

To implement federated login with AWS Cognito and a social identity provider, follow these steps:

1. Create a Cognito User Pool: This serves as the backbone for managing user authentication. It will store user profiles and handle the authentication flow.

2. Configure a Cognito User Pool Client: This client will interact with the User Pool, specifying how users can log in and what permissions they have during the authentication process.

3. Set Up Google as an Identity Provider: By configuring Google as an IdP, users can authenticate using their Google accounts. This involves setting up OAuth scopes and mapping user attributes.

4. Deploy with Pulumi: Use Pulumi to manage and deploy the infrastructure as code, ensuring a streamlined and repeatable setup process.

Key Points

• Cognito User Pool: Central component for managing user authentication.
• Identity Provider Configuration: Integrate with social login providers like Google.
• Infrastructure Management: Use Pulumi to handle the setup as code, making the process efficient and scalable.

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create a Cognito User Pool
const userPool = new aws.cognito.UserPool("userPool", {
    name: "example-user-pool",
    autoVerifiedAttributes: ["email"],
    passwordPolicy: {
        minimumLength: 8,
        requireLowercase: true,
        requireNumbers: true,
        requireSymbols: true,
        requireUppercase: true,
    },
    mfaConfiguration: "OFF",
});

// Create a Cognito User Pool Client
const userPoolClient = new aws.cognito.UserPoolClient("userPoolClient", {
    userPoolId: userPool.id,
    generateSecret: false,
    callbackUrls: ["https://example.com/callback"],
    logoutUrls: ["https://example.com/logout"],
    allowedOauthFlows: ["code"],
    allowedOauthScopes: ["email", "openid", "profile"],
    supportedIdentityProviders: ["COGNITO", "Google"],
});

// Configure Google as an Identity Provider
const googleIdentityProvider = new aws.cognito.IdentityProvider("googleIdentityProvider", {
    userPoolId: userPool.id,
    providerName: "Google",
    providerType: "Google",
    providerDetails: {
        client_id: "your-google-client-id",
        client_secret: "your-google-client-secret",
        authorize_scopes: "openid email profile",
    },
    attributeMapping: {
        email: "email",
        given_name: "given_name",
        family_name: "family_name",
    },
});

// Export the User Pool ID and Client ID
export const userPoolId = userPool.id;
export const userPoolClientId = userPoolClient.id;

Conclusion

In conclusion, implementing federated login with AWS Cognito involves creating a User Pool, configuring a User Pool Client, and setting up a social identity provider like Google. By using Pulumi, you can efficiently manage and deploy these resources, enabling users to log in to your application seamlessly with their social media credentials. This guide provides a comprehensive approach to enhancing user authentication through federated login.