-To do this a Docker multi-stage build is used. - +To do this a create OCI DevOps project for a Function CI/CD and then clone the repo and copy the following files with the Function source and commit and push them to the repo:
-
-Before building the native image let's do a full maven build for the project to create the necessary libraries under target/lib:
-
-
-mvn clean install -- -Then build the Docker container using multi-stage Docker file including the GraalVM native image compilation: - -
-docker build -f Dockerfile.native -t fra.ocir.io/<YOUR OCI TENANCY NAMESPACE>/helloworldai-java:2 . -- -The GraalVM compilation stage requires quite a bit resources from your localhost so in case for example using Rancher desktop -think of increasing the CPU and memory for it to make the build faster. - +
-
-In the Dockerfile.native two things are important: Including the reflection.json with the proper function class name and passing Fn FDK libraries with "-Djava.library.path=/lib" in the container CMD along with the "com.example.HelloAIFunction::handleRequest" function handler.
-
+After pushing run the native build pipeline and test the Function in cloud shell.
-After the build push the container to OCIR repo: - -
-docker push fra.ocir.io/<YOUR OCI TENANCY NAMESPACE>/helloworldai-java:2 -- -Finally deploy the container to your OCI Function by replacing the container using the Cloud UI by editing the function and changing the container from
helloworldai-java:1 to helloworldai-java:2. Then test it.
-
# Useful Links
diff --git a/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/Dockerfile.native b/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/Dockerfile.native
index 3f01a6d7b..c5a8da4f1 100644
--- a/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/Dockerfile.native
+++ b/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/Dockerfile.native
@@ -1,27 +1,4 @@
-FROM fnproject/fn-java-fdk-build:jdk17-1.0-latest as build-stage
-WORKDIR /function
-ENV MAVEN_OPTS -Dhttp.proxyHost= -Dhttp.proxyPort= -Dhttps.proxyHost= -Dhttps.proxyPort= -Dhttp.nonProxyHosts= -Dmaven.repo.local=/usr/share/maven/ref/repository
-ADD pom.xml /function/pom.xml
-RUN ["mvn", "package", "dependency:copy-dependencies", "-DincludeScope=runtime", "-DskipTests=true", "-Dmdep.prependGroupId=true", "-DoutputDirectory=target", "--fail-never"]
-ADD src /function/src
-RUN ["mvn", "package"]
-
-FROM container-registry.oracle.com/graalvm/native-image:23-ol8 AS native
-WORKDIR /app
-COPY --from=build-stage /function/target .
-ADD reflection.json .
-
-RUN native-image \
- -H:ReflectionConfigurationFiles=/app/reflection.json \
- -Ob \
- -H:Name=Hello \
- -cp "/app/Hellofunc-1.0-SNAPSHOT.jar:/app/*" \
- com.fnproject.fn.runtime.EntryPoint
-
-FROM fnproject/fn-java-fdk:jre17-latest as fdk
-
-FROM container-registry.oracle.com/os/oraclelinux:8-slim
-COPY --from=native /app/Hello .
-COPY --from=fdk /function/runtime/* ./
+FROM fnproject/fn-java-fdk:jre17-latest
+COPY Hello ./
ENTRYPOINT [ "./Hello" ]
-CMD [ "com.example.fn.HelloFunction::handleRequest", "-Djava.library.path=/lib"]
\ No newline at end of file
+CMD [ "com.example.fn.HelloFunction::handleRequest", "-Djava.library.path=/function/runtime/lib"]
\ No newline at end of file
diff --git a/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/build_spec_native.yaml b/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/build_spec_native.yaml
index eb936c36f..fda390cb5 100644
--- a/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/build_spec_native.yaml
+++ b/app-dev/devops-and-containers/functions/java-helloworld-AI-with-local-dev-and-oci-functions/files/build_spec_native.yaml
@@ -3,17 +3,45 @@ component: build
timeoutInSeconds: 5000
shell: bash
env:
+ variables:
+ "JAVA_HOME" : "/usr/lib64/graalvm/graalvm-java23"
exportedVariables:
- buildId
+# https://docs.oracle.com/en/graalvm/jdk/23/docs/getting-started/oci/devops-build-pipeline/#prerequisites
steps:
- type: Command
command: |
buildId=`echo ${OCI_BUILD_RUN_ID} | rev | cut -c 1-6 | rev`
echo "Build ID: $buildId"
+ - type: Command
+ command: |
+ yum -y install graalvm-23-native-image
+ - type: Command
+ command: |
+ export PATH=$JAVA_HOME/bin:$PATH
+ - type: Command
+ command: |
+ mvn package
+ - type: Command
+ command: |
+ native-image \
+ -H:ReflectionConfigurationFiles=reflection.json \
+ -Ob \
+ -H:Name=Hello \
+ -cp "target/Hellofunc-1.0-SNAPSHOT-jar-with-dependencies.jar" \
+ com.fnproject.fn.runtime.EntryPoint
- type: Command
command: |
docker build -f Dockerfile.native -t ${REGISTRY}/${NAMESPACE}/${IMAGE_NAME} .
docker tag ${REGISTRY}/${NAMESPACE}/${IMAGE_NAME}:latest ${REGISTRY}/${NAMESPACE}/${IMAGE_NAME}:$buildId
+ # Alternate (faster) method of pushing if don't want to wait outputArtifacts getting executed (stage can be removed from build pipeline)
+ # This does not require personal Docker credentials (!)
+ - type: Command
+ command: |
+ yum install jq -y
+ oci raw-request --region eu-frankfurt-1 --http-method GET --target-uri 'https://fra.ocir.io/20180419/docker/token' --auth=resource_principal | jq -r .data.token | docker login -u BEARER_TOKEN --password-stdin fra.ocir.io
+ docker push ${REGISTRY}/${NAMESPACE}/${IMAGE_NAME}:$buildId
+
outputArtifacts:
- name: image-native
type: DOCKER_IMAGE