ci: use .java-version and prepare to use VM with installed tools in BK

.buildkite/hooks/pre-command

@@ -45,16 +45,23 @@ echo "--- Configure git context :git:"
 git config --global user.email "[email protected]"
 git config --global user.name "apmmachine"
 
-echo "--- Install JDK17 :java:"
-JAVA_URL=https://jvm-catalog.elastic.co/jdk
-JAVA_HOME=$(pwd)/.openjdk17
-JAVA_PKG="$JAVA_URL/latest_openjdk_17_linux.tar.gz"
-curl -L --output /tmp/jdk.tar.gz "$JAVA_PKG"
-mkdir -p "$JAVA_HOME"
-tar --extract --file /tmp/jdk.tar.gz --directory "$JAVA_HOME" --strip-components 1
-
+# Configure the java version
+JAVA_VERSION=$(cat .java-version | xargs | tr -dc '[:print:]')
+JAVA_HOME="${HOME}/.java/openjdk${JAVA_VERSION}"
 export JAVA_HOME
-PATH=$JAVA_HOME/bin:$PATH
+PATH="${JAVA_HOME}/bin:$PATH"
 export PATH
 
-java -version || true
+# Fallback to install at runtime
+if [ ! -d "${JAVA_HOME}" ] ; then
+  # This should not be the case normally untless the .java-version file has been changed
+  # and the VM Image is not yet available with the latest version.
+  echo "--- Install JDK${JAVA_VERSION} :java:"
+  JAVA_URL=https://jvm-catalog.elastic.co/jdk
+  JAVA_PKG="${JAVA_URL}/latest_openjdk_${JAVA_VERSION}_linux.tar.gz"
+  curl -L --output /tmp/jdk.tar.gz "$JAVA_PKG"
+  mkdir -p "$JAVA_HOME"
+  tar --extract --file /tmp/jdk.tar.gz --directory "$JAVA_HOME" --strip-components 1
+fi
+
+java -version

.buildkite/release.yml

@@ -1,5 +1,6 @@
 agents:
   provider: "gcp"
+  #image: "family/ecs-logging-java-ubuntu-2204"
 
 steps:
   - label: "Run the release"

.buildkite/snapshot.yml

@@ -1,5 +1,6 @@
 agents:
   provider: "gcp"
+  #image: "family/ecs-logging-java-ubuntu-2204"
 
 steps:
   - label: "Run the snapshot"

.ci/release.sh

@@ -27,9 +27,14 @@ echo $PATH
 java -version
 
 set +x
-echo "--- Release the binaries to Maven Central :maven:"
-if [[ "${dry_run}" == "true" ]] ; then
-  ./mvnw -V -s .ci/settings.xml -Pgpg clean package --batch-mode | tee release.txt
-else
-  ./mvnw -V -s .ci/settings.xml -Pgpg clean deploy --batch-mode | tee release.txt
+# Default in dry-run mode
+GOAL="install"
+DRY_RUN_MSG="(dry-run)"
+# Otherwise, a RELEASE
+if [[ "$dry_run" == "false" ]] ; then
+  GOAL="deploy"
+  DRY_RUN_MSG=""
 fi
+
+echo "--- Release the binaries to Maven Central :maven: [./mvnw $GOAL)] $DRY_RUN_MSG"
+./mvnw -V -s .ci/settings.xml -Pgpg clean $GOAL -DskipTests --batch-mode | tee release.txt

.ci/snapshot.sh

@@ -24,9 +24,14 @@ echo $PATH
 java -version
 
 set +x
-echo "--- Deploy the snapshot :package:"
-if [[ "$dry_run" == "true" ]] ; then
-  ./mvnw -V -s .ci/settings.xml -Pgpg clean package --batch-mode | tee snapshot.txt
-else
-  ./mvnw -V -s .ci/settings.xml -Pgpg clean deploy --batch-mode | tee snapshot.txt
+# Default in dry-run mode
+GOAL="install"
+DRY_RUN_MSG="(dry-run)"
+# Otherwise, a RELEASE
+if [[ "$dry_run" == "false" ]] ; then
+  GOAL="deploy"
+  DRY_RUN_MSG=""
 fi
+
+echo "--- Deploy the snapshot :package: [./mvnw $GOAL)] $DRY_RUN_MSG"
+./mvnw -V -s .ci/settings.xml -Pgpg clean $GOAL -DskipTests --batch-mode | tee release.txt

.github/workflows/maven-goal/action.yml

@@ -4,10 +4,6 @@ name: maven-goal
 description: Install specific JDK and run a command
 
 inputs:
-  version:
-    description: 'Java version'
-    required: true
-    default: '17'
   distribution:
     description: 'Java distribution'
     required: true
@@ -26,7 +22,7 @@ runs:
     - name: Set up JDK
       uses: actions/setup-java@v4
       with:
-        java-version: ${{ inputs.version }}
+        java-version-file: .java-version
         distribution: ${{ inputs.distribution }}
         cache: 'maven'
     - run: ${{ inputs.command }}

.java-version

@@ -0,0 +1 @@
+17