digio/lightweight-java-spring-native

Spring Native

This application is part of the Lightweight Java Tech Assessment. It's mainly focused on Spring Native with Graalvm.

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Regular Spring Boot

Build

To build the regular Spring Boot application, run the following command:

cd app
./gradlew clean build

Run

To run the regular Spring Boot application, run the following command:

./gradlew bootRun

Once it's running in local, to test things out, try

localhost:8080/airports

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Spring Native

Build

To build the Spring Native application, run the following command(build time for native takes way longer than regular spring boot, grab a coffee):

cd app
./gradlew clean nativeCompile

This will create an executable app/build/native/nativeCompile/app

Run

Once the build is done, run the following command:

.app/build/native/nativeCompile/app

Once it's running, to test things out, try

localhost:8080/airports

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Deployment

The application currently only build into native image and deploy to AWS lambda via CDK.

To bootstrap the AWS environment:

cd infra
cdk bootstrap --toolkit-stack-name=GSNCDKToolkit --qualifier=graalvm-spring-native -v

To build and deploy the application, make sure docker is running then:

cdk deploy

This will pull the docker image, build the native image and deploy to AWS lambda. The reason this will build the project again is that the previous nativeCompile will only build the executable based on you local machine OS. However, to customize runtime on AWS lambda is based on Linux, which requires the executable build on Linux image. So, we need to build the native image again. Time to grab your second coffee,this process will take a while.