AWS Cognito is a fully managed service that provides user sign-up, sign-in, and access control to mobile and web applications. It provides a secure and scalable user directory that can be used to manage user authentication and authorization for accessing AWS resources and APIs.
Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale. It provides a wide range of features, including authentication and authorization, rate limiting, caching, request and response transformations, and custom domain names.
Integrating AWS Cognito with API Gateway is a straightforward process that involves creating an API Gateway authorizer that can be used to secure access to your APIs. Here are the steps involved:
Create a user pool in AWS Cognito and configure the user sign-up and sign-in settings. Create an API in API Gateway and define the resources and methods that you want to secure. Create an authorizer in API Gateway that uses AWS Cognito as the authentication provider. Configure the API Gateway methods to use the authorizer to secure access to the resources.
Let’s look at each of these steps in more detail:
Create a user pool in AWS Cognito:
To create a user pool in AWS Cognito, follow these steps:
a. Open the AWS Cognito console, and click on "Manage your User Pools". b. Click on "Create a user pool" and provide a name for your user pool. c. Configure the user sign-up and sign-in settings according to your requirements, including the password policy, multi-factor authentication, and user attributes.
Create an API in API Gateway:
To create an API in API Gateway, follow these steps:
a. Open the API Gateway console, and click on "Create API". b. Select the type of API that you want to create, and provide a name for your API. c. Define the resources and methods that you want to expose in your API, and configure the request and response parameters as needed.
Create an authorizer in API Gateway:
To create an authorizer in API Gateway that uses AWS Cognito as the authentication provider, follow these steps:
a. Open the API Gateway console, and select your API. b. Click on "Authorizers" and then "Create New Authorizer". c. Select "Cognito" as the type of authorizer, and provide the user pool and client ID that you created in AWS Cognito. d. Configure the authorization caching and token validation settings as needed.
Configure the API Gateway methods to use the authorizer:
To secure access to the resources in your API using the authorizer that you created in step 3, follow these steps:
a. Open the API Gateway console, and select your API. b. Select the resource and method that you want to secure. c. Click on "Method Request" and configure the required authorization settings. d. Click on "Integration Request" and map the user information from the JWT token to the headers or body of the request that is sent to the backend.
Once you have completed these steps, your API is now secured using AWS Cognito as the authentication provider.
In summary, integrating AWS Cognito with API Gateway provides a simple and effective way to secure access to your APIs. It allows you to authenticate and authorize users, control access to resources, and manage user information in a secure and scalable manner.