Timetable Constraint Solver on AWS Lambda

This project is a modified version of the source code for a timetable solver from OptaPlanner's quickstart: https://github.com/kiegroup/optaplanner-quickstarts

You may find the blog post for this here: Running a serverless Java constraint solver on AWS

A sample serverless project for deploying a Java constraint solver by OptaPlanner as a container on AWS Lambda.

Compile

mvn compile dependency:copy-dependencies -DincludeScope=runtime

Build image

docker build -t opta-time-table-solver-lambda . --platform=amd64

Run locally

docker run -p 9000:8080 opta-time-table-solver-lambda

In a separate terminal:

curl -XPOST "http://localhost:9000/2015-03-31/functions/function/invocations" -d '{}'

Deploy

Set env vars

export AWS_ACCOUNT_ID=<YOUR AWS ACCOUNT ID>
export AWS_REGION=<YOUR AWS REGION>

Setup ECR

aws ecr create-repository --repository-name opta-time-table-solver-lambda

Push to ECR

aws ecr get-login-password --region $AWS_REGION | docker login --username AWS --password-stdin $AWS_ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com
docker tag opta-time-table-solver-lambda:latest $AWS_ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/opta-time-table-solver-lambda:latest
docker push $AWS_ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/opta-time-table-solver-lambda:latest

Serverless deploy

sls deploy