Deploy doesn't update Lambdas when using artifacts

[Ian Wright]

So I've been trying to deploy some Lambdas with this, using the artifacts approach and I've discovered that while the first deploy works, updates to the stack don't work properly.

After doing some searching, I believe the S3Key needs to be rotated in the CloudFormation, but this would also be the case for the cfpack.config.js. Is there a way to introduce variables in to trigger some sort of automatic rotation?

[Eugene Manuilov]

Hi @IPWright83

how about using something like this:

template file

Parameters:
  LambdaFunctionAS3Key:
    Type: String
    Description: ...
Resources:
  LambdaFunctionA:
    Type: AWS::Lambda::Function
    Properties: 
      Handler: index.handler
      Role: ...
      Code: 
        S3Bucket: my-bucket
        S3Key: !Ref LambdaFunctionAS3Key
      Runtime: nodejs8.10
      ...

cfpack.config.js

const lambdaAFilename = `lambdas/function-a.${ +new Date }.zip`;

module.exports = {
    ...
    stack: {
        name: "my-stack",
        region: "us-east-1",
        params: {
            {
                ParameterKey: 'LambdaFunctionAS3Key',
                ParameterValue: lambdaAFilename,
            },
        },
        artifacts: [
            {
                bucket: "my-bucket",
                files: {
                    [lambdaAFilename]: {
                        baseDir: "lambdas/functionA",
                        path: "**/*",
                        compression: "zip"
                    },
                }
            }
        ]
    }
};

[Ian Wright]

That sounds like a great idea @eugene-manuilov, I hadn't thought of trying to inject parameters. I'm fairly sure that'll work so going to close. Thank you 👍🏻