Can anyone please help me with this ```Hi we are trying to m Serverless Stack #help

Can anyone please help me with this ? ```Hi, we a...

Sourav Sarkar

10/23/2021, 5:58 PM

Can anyone please help me with this ?

Copy code

Hi, we are trying to move from serverless pro to seed.run, but stuck in a general problem, we use cloudformation to create cognito with custom lambda based authentication.
we have a mono repo, were in one service we have the lambdas. And in another service we have cognito. So in pipeline we have two stages, in the first stage the lambda deploys and after that the cognito, this is easy to setup , but i want to refer the output of the lambda service (some lambda arns) and use them in cognito service.
In serverless pro, i would use "output" and then use them like this in the next stack ${output:auth.CreateDashlambdaLambdaFunctionQualifiedArn}
I do not want to manually copy the arn, as we have many other use cases like dynamodb stream processing in lambda as one, which we will migrate after this. whats the best way to do this in seed ? i did not see this in the seed.run documentations

Note: I am not using sst, rather i am using serverless framework

Sourav Sarkar

10/23/2021, 6:56 PM

I got some success --> In the first stack I am doing an export like this :

Copy code

resources:
  Outputs:
    DefinelambdaArn:
      Description: 'ARN will be imported by other stacks'
      Value: !GetAtt DefineDashlambdaLambdaFunction.Arn
      Export:
        Name: ${self:service}-${self:provider.stage}-DefinelambdaArn
    CreatelambdaArn:
      Description: 'ARN will be imported by other stacks'
      Value: !GetAtt CreateDashlambdaLambdaFunction.Arn
      Export:
        Name: ${self:service}-${self:provider.stage}-CreatelambdaArn
    VerifylambdaArn:
      Description: 'ARN will be imported by other stacks'
      Value: !GetAtt VerifyDashlambdaLambdaFunction.Arn
      Export:
        Name: ${self:service}-${self:provider.stage}-VerifylambdaArn

And in the second one importing like this :

Copy code

LambdaConfig:
          CreateAuthChallenge: !ImportValue auth-${self:provider.stage}-CreatelambdaArn
          DefineAuthChallenge: !ImportValue auth-${self:provider.stage}-DefinelambdaArn
          VerifyAuthChallengeResponse: !ImportValue auth-${self:provider.stage}-VerifylambdaArn

is this the proper approach ? this works both locally and in seed phased pipelines

Frank

10/24/2021, 3:06 AM

Hey @Sourav Sarkar, yup this is how I’d do it too. I shared my thoughts here https://serverless-stack.slack.com/archives/C01JVDJQU2C/p1635009430018300

Open in Slack

Previous Next