Add a very hacky version of dockerizerJVM property

Author: barecode

boost-maven/boost-maven-plugin/src/main/java/io/openliberty/boost/docker/DockerBuildMojo.java

@@ -101,11 +101,19 @@ public class DockerBuildMojo extends AbstractDockerMojo {
 	private Map<String, String> buildArgs;
 
 	/**
-	 * Sets the type of docker build to run.
+	 * Determine the type of Dockerfile to create.<br>
+	 * Supported values are: liberty, jar, classpath
 	 */
 	@Parameter(property = "dockerizer", defaultValue = "liberty")
 	private String dockerizer;
 
+	/**
+	 * Determine the JVM to use in the FROM line of Dockerfile to create.<br>
+	 * Supported values are: openj9, hotspot, graalvm
+	 */
+	@Parameter(property = "dockerizerJVM", defaultValue = "openj9")
+	private String dockerizerJVM;
+
 	@Override
 	protected void execute(DockerClient dockerClient) throws MojoExecutionException, MojoFailureException {
 		try {
@@ -174,19 +182,38 @@ private File getAppArchive() throws BoostException {
 	}
 
 	private Dockerizer getDockerizer(MavenProject project, File appArchive, Log log) {
+
+		// TODO: This is a bad ugly hack, need a real implementation!
+		// Things to be done:
+		// 1. Probably create an abstraction for the JVM type?
+		// 2. Definitely support more than just Java 8
+		String jvmLevel = project.getProperties().getProperty("java.version", "1.8");
+		if ("1.8".equalsIgnoreCase(jvmLevel)) {
+			log.warn("Right now, boost dockerizer only supports Java 8");
+		}
+
+		// Set default to be openj9
+		String fromJVM = "FROM adoptopenjdk/openjdk8-openj9";
+		if ("graalvm".equalsIgnoreCase(dockerizerJVM)) {
+			fromJVM = "FROM oracle/graalvm-ce:1.0.0-rc9";
+		}
+		if ("hotspot".equalsIgnoreCase(dockerizerJVM)) {
+			fromJVM = "FROM openjdk:8-jdk-alpine";
+		}
+
 		// TODO: Needed future enhancements:
 		// 1. Is it Spring or something else? sense with MavenProjectUtil.findSpringBootVersion(project);
 		// 2. Use OpenJ9 or HotSpot? sense with property boost.docker.jvm
 		if ("jar".equalsIgnoreCase(dockerizer)) {
-			return new DockerizeSpringBootJar(project, appArchive, log);
+			return new DockerizeSpringBootJar(project, appArchive, log, fromJVM);
 		}
 		if ("classpath".equalsIgnoreCase(dockerizer)) {
-			return new DockerizeSpringBootClasspath(project, appArchive, log);
+			return new DockerizeSpringBootClasspath(project, appArchive, log, fromJVM);
 		}
 		// TODO: Maybe don't make the Spring Boot dockerizer default after EE stuff is added
 		// The current property values of 'jar', 'classpath' and 'liberty' are intentionally
 		// generic so that they can be applied irrespective of the project type (Spring vs EE)
-		return new DockerizeLibertySpringBootJar(project, appArchive, log);
+		return new DockerizeLibertySpringBootJar(project, appArchive, log, fromJVM);
 	}
 
 	/**

boost-maven/boost-maven-plugin/src/main/java/io/openliberty/boost/docker/dockerizer/Dockerizer.java

@@ -37,13 +37,15 @@ public abstract class Dockerizer {
 	protected final File outputDirectory;
 	protected final File appArchive;
 	protected final Log log;
+	protected final String fromJVM;
 
-	public Dockerizer(MavenProject project, File appArchive, Log log) {
+	public Dockerizer(MavenProject project, File appArchive, Log log, String fromJVM) {
 		this.project = project;
 		this.projectDirectory = project.getBasedir();
 		this.outputDirectory = new File(project.getBuild().getDirectory());
 		this.appArchive = appArchive;
 		this.log = log;
+		this.fromJVM = fromJVM;
 	}
 
 	/**

boost-maven/boost-maven-plugin/src/main/java/io/openliberty/boost/docker/dockerizer/spring/DockerizeLibertySpringBootJar.java

@@ -32,8 +32,9 @@ public class DockerizeLibertySpringBootJar extends SpringDockerizer {
     private static final String COPY = "COPY ";
     private static final String RUN = "RUN ";
 
-    public DockerizeLibertySpringBootJar(MavenProject project, File appArchive, Log log) {
-    		super(project, appArchive, log);
+    // This does not actually use fromJVM right now
+    public DockerizeLibertySpringBootJar(MavenProject project, File appArchive, Log log, String fromJVM) {
+        super(project, appArchive, log, fromJVM);
     }
 
     public Map<String, String> getBuildArgs() {

boost-maven/boost-maven-plugin/src/main/java/io/openliberty/boost/docker/dockerizer/spring/DockerizeSpringBootClasspath.java

@@ -22,8 +22,8 @@
 
 public class DockerizeSpringBootClasspath extends SpringDockerizer {
 
-	public DockerizeSpringBootClasspath(MavenProject project, File appArchive, Log log) {
-		super(project, appArchive, log);
+	public DockerizeSpringBootClasspath(MavenProject project, File appArchive, Log log, String fromJVM) {
+		super(project, appArchive, log, fromJVM);
 	}
 
 	public Map<String, String> getBuildArgs() {
@@ -35,7 +35,7 @@ public Map<String, String> getBuildArgs() {
 	public List<String> getDockerfileLines() throws MojoExecutionException {
 		ArrayList<String> lines = new ArrayList<>();
 		lines.add(BOOST_GEN);
-		lines.add("FROM adoptopenjdk/openjdk8-openj9");
+		lines.add(fromJVM);
 		lines.add("VOLUME /tmp");
 		lines.add("ARG DEPENDENCY=target/dependency");
 		lines.add("COPY ${DEPENDENCY}/BOOT-INF/lib /app/lib");

boost-maven/boost-maven-plugin/src/main/java/io/openliberty/boost/docker/dockerizer/spring/DockerizeSpringBootJar.java

@@ -22,8 +22,8 @@
 
 public class DockerizeSpringBootJar extends SpringDockerizer {
 
-	public DockerizeSpringBootJar(MavenProject project, File appArchive, Log log) {
-		super(project, appArchive, log);
+	public DockerizeSpringBootJar(MavenProject project, File appArchive, Log log, String fromJVM) {
+		super(project, appArchive, log, fromJVM);
 	}
 
 	public Map<String, String> getBuildArgs() {
@@ -35,7 +35,7 @@ public Map<String, String> getBuildArgs() {
 	public List<String> getDockerfileLines() throws MojoExecutionException {
 		ArrayList<String> lines = new ArrayList<>();
 		lines.add(BOOST_GEN);
-		lines.add("FROM adoptopenjdk/openjdk8-openj9");
+		lines.add(fromJVM);
 		lines.add("VOLUME /tmp");
 		lines.add("ARG JAR_FILE");
 		lines.add("COPY ${JAR_FILE} app.jar");

boost-maven/boost-maven-plugin/src/main/java/io/openliberty/boost/docker/dockerizer/spring/SpringDockerizer.java

@@ -32,8 +32,8 @@ public abstract class SpringDockerizer extends Dockerizer {
 
     protected final String springBootVersion = MavenProjectUtil.findSpringBootVersion(project);
 
-    public SpringDockerizer(MavenProject project, File appArchive, Log log) {
-        super(project, appArchive, log);
+    public SpringDockerizer(MavenProject project, File appArchive, Log log, String fromJVM) {
+        super(project, appArchive, log, fromJVM);
     }
 
     /**