This is my first foray into CDK so I m likely missing someth Serverless Stack #help

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This is my first foray into CDK, so I'm likely mis...

# help

Seth Geoghegan

01/19/2021, 5:50 PM

This is my first foray into CDK, so I'm likely missing something very obvious 🙂

Frank

01/19/2021, 6:03 PM

Hi @Seth Geoghegan, from the error message, it seems you have multiple

IdentityPoolRoleAttachment

resources with the same name.

Frank

01/19/2021, 6:04 PM

Can you go into your .build/cdk.out and send me the generated CloudFormation template json file for the cognito stack?

Seth Geoghegan

01/19/2021, 6:11 PM

Hi @Frank, thanks for helping. https://gist.github.com/SethThomas/e97e57fda948d079f85418af68101b4d

Seth Geoghegan

01/19/2021, 6:16 PM

If it helps, here's the serverless.yml from my existing auth service. It successfully creates the two policies (guest and authorized). I'm trying to replicate this in CDK https://gist.github.com/SethThomas/1566f19ea58028e5cf673e76ab6643b3

Frank

01/19/2021, 6:33 PM

Thanks Seth. The problem seems to be you have

IdentityPoolRoleAttachment

defined twice, once inside CognitoAuthRole.js and once inside CognitoGuestRole.js

Frank

01/19/2021, 6:34 PM

Copy code

new cognito.CfnIdentityPoolRoleAttachment(
      this,
      "IdentityPoolRoleAttachment",
      {
        identityPoolId: identityPool.ref,
        roles: {unauthenticated: this.role.roleArn}
      }
    );

Frank

01/19/2021, 6:34 PM

Notice you have

unauthenticated

role specified in CognitoGuestRole.js

Frank

01/19/2021, 6:35 PM

Just create 1

IdentityPoolRoleAttachment

with both

authenticated

and

unauthenticated

roles

Seth Geoghegan

01/19/2021, 7:11 PM

Thanks a lot, I was able to get it working. It was not clear to me that I could only have one

IdentityPoolRoleAttachment

defined. The stack is now deployed with all the required roles created. Thanks again!

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