Cloudformation Cognito - how to setup App Client S

Question

I already have my cognito user pool cloudformation template working, and have it integrated to my api gateway. But somehow i still have to manually configure the app client settings, domain, and federated identities to have a working login portal for the users. I have been looking here and there for possible solutions in automating these, but i cannot seem to find anything close to it.

I would like to automate the configuration of the app client settings, domain, and federated identities via cloudformation sam template so i do not have to do these manually.

Any suggestions are much appreciated. Thank you.

(attachments posted for additional info)

• https://i.stack.imgur.com/I7NSt.png
• https://i.stack.imgur.com/ZbiTI.png
• https://i.stack.imgur.com/F8rfH.png

Answer 1

Looks like there is no way to provide App integration -> Domain name and Federation -> Identity providers via CloudFormation.

I found only reference for User Pool Client (General settings -> App clients) but it will not configure App integration -> App client settings.

If you need to automate process of providing Domain name, Identity providers and App client settings for user pool, you can do that by creating custom script (AWS CLI) or Lambda (AWS SDK) which should be performed after stack deployment.

UPDATE

Check out excellent example (answer below) that shows usage of CloudFormation Custom Resources with Lambda.

Answer 2

I want to add a different solution (suggested by Mickael) because CloudFormation is complex to set up ; this command line will create your domain after the CloudFormation stack is created :

 aws cognito-idp create-user-pool-domain --domain test-domain --user-pool-id eu-west-1_xxxxxxxx 

In your automated deployment you can add a script that sets your domain. Not as great as everything on CF but it works

Answer 3

I have created two CloudFormation custom resources to apply Cognito app client settings and domain name. With these resources, you can have a script like this:

UserPoolTestClient:
  Type: 'AWS::Cognito::UserPoolClient'
  Properties:
    ClientName: UserPoolTestClient
    GenerateSecret: true
    UserPoolId: !Ref UserPoolTest
UserPoolTestClientSettings:
  Type: 'Custom::CognitoUserPoolClientSettings'
  Properties:
    ServiceToken: !GetAtt CloudFormationCognitoUserPoolClientSettings.Arn
    UserPoolId: !Ref UserPoolTest
    UserPoolClientId: !Ref UserPoolTestClient
    SupportedIdentityProviders:
      - COGNITO
    CallbackURL: 'https://www.amazon.com'
    LogoutURL: 'https://www.google.com'
    AllowedOAuthFlowsUserPoolClient: true
    AllowedOAuthFlows:
      - code
    AllowedOAuthScopes:
      - openid
UserPoolTestDomain:
  Type: 'Custom::CognitoUserPoolDomain'
  Properties:
    ServiceToken: !GetAtt CloudFormationCognitoUserPoolDomain.Arn
    UserPoolId: !Ref UserPoolTest
    Domain: 'userpool-test-01'

The complete code is here.