kotlin-lambda

Test project to try out Kotlin running on AWS Lambda deployed via CDK.

Following this tutorial:

https://medium.com/geekculture/serverless-aws-with-kotlin-gradle-and-cdk-d6bfe820b85

Also integrated DynamoDb using (alpha) AWS SDK for Kotlin.

Deployment

./gradlew shadowJar
cdk synth
cdk deploy --app stack/cdk.out 
# ... 
cdk destroy --app stack/cdk.out

cdk synth will report ENOENT: no such file or directory, open 'cdk.out/manifest.json' Just ignore this (see the tutorial)

Debugging

Installed AWS SAM CLI, and then installed the AWS Toolkit for JetBrains IntelliJ IDEA.

The AWS IntelliJ plugin functions. I can explore my AWS services. However, it seems to only work with SAM applications (with template.yaml file). This being a CDK app, the plugin had no clue what to do with my local code.

Next, experimented with CDK debugging using (beta) sam-beta-cdk.

Because of the multi-project setup, had to create a symlink to where SAM expects to find its working files. From project root:

mkdir stack/.aws-sam && ln -s stack/.aws-sam .aws-sam

Executing the following did, indeed, run the Lambda function locally:

sam-beta-cdk local invoke "sample-stack/sample-handler"

So that's something, but not finding a good way to step-through debug a CDK Lambda in IntelliJ. Since sam-cdk is in beta, maybe AWS Toolkit CDK integration is just over the horizon?