Merge pull request #346 from mraible/dependabot/maven/reactive/helidon/io.helidon.applications-helidon-se-27.0.1

Bump io.helidon.applications:helidon-se from 4.5.4 to 27.0.1 in /reactive/helidon

Author: mraible

.github/workflows/helidon.yml

@@ -34,11 +34,11 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v7
-      - name: Configure Java 25
+      - name: Configure Java 27
         uses: actions/setup-java@v6
         with:
           distribution: 'temurin'
-          java-version: 25
+          java-version: 27
           cache: 'gradle'
       - name: Run tests
         working-directory: ./${{ matrix.app }}

.github/workflows/reactive.yml

@@ -49,7 +49,7 @@ jobs:
       - name: Build Helidon project
         run: |
           cd reactive/helidon
-          docker build -t helidon -f Dockerfile.native .
+          docker build -t helidon -f Dockerfile.jlink .
           docker tag helidon:latest mraible/helidon-reactive:latest
         shell: bash
 

README.md

@@ -79,14 +79,14 @@ You can also build and run each example as a native app.
 - Micronaut: `./gradlew nativeCompile`
 - Quarkus: `quarkus build --native`
 - Spring Boot: `./gradlew nativeCompile`
-- Helidon: `mvn package -Pnative-image`
+- Helidon: `mvn package -Pnative-image` (imperative) or `mvn package -Pjlink-image` (reactive, which uses a jlink image because no GraalVM release supports Java 27 yet)
 
 Then, start each app as a native executable.
 
 - Micronaut: `./build/native/nativeCompile/app`
 - Quarkus: `./build/quarkus-1.0.0-SNAPSHOT-runner`
 - Spring Boot:  `./build/native/nativeCompile/spring-boot`
-- Helidon: `./target/helidon`
+- Helidon: `./target/helidon` (imperative) or `./target/helidon-jri/bin/start` (reactive)
 
 ## Links
 

reactive/build.sh

@@ -18,5 +18,6 @@ cd ../quarkus && ./gradlew build -Dquarkus.package.type=native
 echo "Building Spring Boot..."
 cd ../spring-boot && ./gradlew nativeCompile
 
-echo "Building Helidon..."
-cd ../helidon && mvn package -Pnative-image
+echo "Building Helidon (jlink image with AOT cache, requires Java 27)..."
+sdk use java 27.0.0.0+35-tem
+cd ../helidon && mvn package -Pjlink-image

reactive/demo.adoc

@@ -419,22 +419,17 @@ security:
 
   http :8080/hello Authorization:"Bearer $TOKEN"
 
-=== Build a native Helidon app with GraalVM
+=== Build a Helidon jlink image with an AOT cache
 
-. Update `src/main/resources/META-INF/native-image/com.example.rest/helidon/native-image.properties` so native compilation will work with Java 21.
-+
-[source,properties]
-----
-Args=--initialize-at-build-time=com.example.rest --enable-url-protocols=https
-----
+Helidon 27 requires Java 27, and no GraalVM release supports Java 27 yet, so this app uses a custom Java runtime image with an ahead-of-time (AOT) cache instead of a native executable.
 
-. Compile your Helidon app into a native executable using the `native-image` profile:
+. Build the runtime image using the `jlink-image` profile:
 
-  mvn package -Pnative-image
+  mvn package -Pjlink-image
 
 . Start your Helidon app:
 
-  ./target/helidon
+  ./target/helidon-jri/bin/start
 
 . Test your API with an access token.
 

reactive/helidon/Dockerfile

@@ -1,6 +1,6 @@
 
 # 1st stage, build the app
-FROM container-registry.oracle.com/java/openjdk:21 as build
+FROM container-registry.oracle.com/java/openjdk:27-oraclelinux9 AS build
 
 # Install maven
 WORKDIR /usr/share
@@ -27,7 +27,7 @@ RUN mvn package -DskipTests
 RUN echo "done!"
 
 # 2nd stage, build the runtime image
-FROM container-registry.oracle.com/java/openjdk:21
+FROM container-registry.oracle.com/java/openjdk:27-oraclelinux9
 WORKDIR /helidon
 
 # Copy the binary built in the 1st stage

reactive/helidon/Dockerfile.jlink

@@ -1,6 +1,6 @@
 
 # 1st stage, build the app
-FROM container-registry.oracle.com/java/openjdk:21 as build
+FROM container-registry.oracle.com/java/openjdk:27-oraclelinux9 AS build
 
 WORKDIR /usr/share
 
@@ -28,7 +28,7 @@ RUN echo "done!"
 
 # 2nd stage, build the final image with the JRI built in the 1st stage
 
-FROM debian:stretch-slim
+FROM container-registry.oracle.com/os/oraclelinux:9-slim
 WORKDIR /helidon
 COPY --from=build /helidon/target/helidon-jri ./
 ENTRYPOINT ["/bin/bash", "/helidon/bin/start"]

reactive/helidon/Dockerfile.native

@@ -5,7 +5,7 @@ Sample Helidon SE project that includes multiple REST operations.
 ## Build and run
 
 
-With JDK21
+With JDK 27
 ```bash
 mvn package
 java -jar target/helidon.jar

reactive/helidon/README.md

@@ -6,7 +6,7 @@
     <parent>
         <groupId>io.helidon.applications</groupId>
         <artifactId>helidon-se</artifactId>
-        <version>4.5.4</version>
+        <version>27.0.1</version>
         <relativePath/>
     </parent>
     <groupId>com.example.rest</groupId>