GraalVM sample for a restful spring application.

[iTchTheRightSpot]

Hey I have been trying to convert and deploy software/unicorn-store-spring to graalvm native image to lambda but I can't figure it out yet. I have been at it for some days now so if a sample can be made. Thank you in advance.

[deki]

Hi @emmanuelU17,
were you following the description in our workshop https://catalog.workshops.aws/java-on-aws-lambda/en-US/01-migration/graalvm? Which step didn't work for you?

If you prefer to join a direct call with us, please reach out via your AWS account team (or using https://aws.amazon.com/contact-us/sales-support/ in case you don't know).

[iTchTheRightSpot]

Hi @deki,
I am indeed following the description in the workshop but the only difference is I am manually uploading a zip file which I built using docker. I can see from my logs, my application booted up but it times out because there was is communication between lambda and my application. I attached a repo I am trying to replicate https://github.com/emmanuelU17/server-side-event/tree/lambda/backend

[deki]

Thanks for sharing your repo. The way you've implemented it is actually not supported right now, but it's already being worked on (see aws/serverless-java-container#335 and aws/serverless-java-container#739).

To get it running today you'd need to follow our sample https://github.com/aws-samples/aws-lambda-java-workshop/tree/main/labs/unicorn-store/software/alternatives/unicorn-store-spring-graalvm and implement a Spring Cloud Function Handler.

I'll keep this issue open until an updated sample is available (likely beginning of next month).

[iTchTheRightSpot]

Ohh thank you for the clarification. I been at this for some days now to the extent I almost started questioning myself. I'll definitely be on the lookout for see aws/serverless-java-container#335 and aws/serverless-java-container#739 and this issue.

Thank you again for the clarification.

[iTchTheRightSpot]

Looks like https://github.com/aws/serverless-java-container/issues/335 has solved this issue but before it is closed I got a quick question. What if I want to my source code to be saved in ECR instead of S3. For one

1. Is this possible? I mean deploying via ECR instead of S3.
2. If it is possible, would the entry point in my Dockerfile look something like this ENTRYPOINT ["/app/pet-store-native"] (ps. I can update this issue to what my Dockerfile would look like)?

[deki]

You can use ECR but that's a different deployment model. See https://docs.aws.amazon.com/lambda/latest/dg/images-create.html for more details.

[iTchTheRightSpot]

Hey, I was able to deploy my source code based on the sample repo. I would like to try a different way of deployment to lambda via ECR. I understand because I am using a custom runtime, I'll have to define a bootstrap file (which I did in the root folder) which lambda can use to invoke my bytecode. In the root of my project, I have a Dockerfile.ecr where the entry point is the bootstrap file. After I successfully deployed to ecr and then manually upload the image to lambda function for testing, I get an error where there is not communication between. If you do not mind, can you take a look at my repo and guide me on what I am doing wrong.

Thank you again

[iTchTheRightSpot]

Never mind I got it figured out. Realized I was missing copying bytecode into ${LAMBDA_TASK_ROOT}. These examples helped for anyone finding issues.Python example and R example