jhcao23 / graalvm21lab

oracle graalvm for jdk 21 lab tutorial

ReadMe

Prerequisite

• install GraalVM CE

  sdk install java 21-graalce

verify versions

java -version # see 21
native-image --version # see 21

traditional build

plain build

1. mvn build

mvn clean package && java -jar ./target/jibber-0.0.1-SNAPSHOT-exec.jar &

2. test

curl http://localhost:8080/jibber

3. kill process

fg # bring to foreground then Ctrl-C

docker build

1. build docker image

   docker build -f ./00-containerise/Dockerfile \
       --build-arg JAR_FILE=./target/jibber-0.0.1-SNAPSHOT-exec.jar \
       -t localhost/jibber:java.01 .

2. Query Docker to look at your newly built image:

   docker images | head -n2 && docker images localhost/jibber:java.01

3. Run this image as follows:

   docker run --rm -d --name "jibber-java" -p 8080:8080 localhost/jibber:java.01

4. Test

   curl http://localhost:8080/jibber

5. check log

   docker logs jibber-java

6. terminate container

   docker kill jibber-java

build native image

run native profile

1. mvn build

mvn package -Pnative # take ~10min

# or use spring boot plugin
mvn -Pnative native:compile

2. check and run

ls -lh target/jibber;
./target/jibber &

3. test

curl http://localhost:8080/jibber

4. terminate process

fg # bring to foreground then Ctrl-C

docker the native image

1. build docker image

docker build -f ./01-native-image/Dockerfile \
    --build-arg APP_FILE=./target/jibber \
    -t localhost/jibber:native.01 .

2. Take a look at the newly built image:

docker images | head -n2 && docker images localhost/jibber:native.01

3. run docker image

docker run --rm -d --name "jibber-native" -p 8080:8080 localhost/jibber:native.01

4. test

curl http://localhost:8080/jibber

5. check log

docker logs jibber-native

6. terminate the running docker

docker kill jibber-native

gradle build

gradle clean build && gradle bootRun;
gradle nativeCompile && build/native/nativeCompile/graalvm21lab;
# build docker native image, not yet working, wait for java 21
gradle bootBuildImage;

FaQ

1. how to clean docker cache:

docker builder prune

Reference

1. Lunar Lab
2. sdkman
3. Spring Blog Sep 2023