io.reactiverse.es4x.commands.JLinkCommand Maven / Gradle / Ivy

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/*
 * Copyright 2019 Red Hat, Inc.
 *
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  and Apache License v2.0 which accompanies this distribution.
 *
 *  The Eclipse Public License is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 *
 *  The Apache License v2.0 is available at
 *  http://www.opensource.org/licenses/apache2.0.php
 *
 *  You may elect to redistribute this code under either of these licenses.
 */
package io.reactiverse.es4x.commands;

import io.vertx.core.cli.CLIException;
import io.vertx.core.cli.annotations.*;
import io.vertx.core.spi.launcher.DefaultCommand;

import java.io.IOException;

import static io.reactiverse.es4x.cli.Helper.*;

@Name("jlink")
@Summary("Creates a slim runtime (requires java >= 11).")
public class JLinkCommand extends DefaultCommand {

  private String target;

  @Option(longName = "target", shortName = "t")
  @Description("Where to install the optimized runtime")
  @DefaultValue("jre")
  public void setTarget(String target) {
    this.target = target;
  }

  @Override
  public void run() throws CLIException {

    try {
      final double version = Double.parseDouble(System.getProperty("java.specification.version"));
      if (version >= 11) {
        int iVersion = (int) version;
        // Collect the jmods used in the application
        String mods = exec(javaHomePrefix() + "jdeps", "-q", "--multi-release", Integer.toString(iVersion), "--module-path", "node_modules/.lib", "--print-module-deps", "node_modules/.bin/es4x-launcher.jar");
        // trim any new line
        mods = mods.replaceAll("\r?\n", "");
//        if (!mods.contains("java.naming.sql")) {
//          // add the java.naming.sql module for DNS
//          mods = mods + ",java.naming.sql";
//        }
        // enable jvmci if supported
        String modules = exec(javaHomePrefix() + "java", "--list-modules");
        if (modules.contains("jdk.internal.vm.ci")) {
          if (!mods.contains("jdk.internal.vm.ci")) {
            // add the jvmci module
            mods = mods + ",jdk.internal.vm.ci";
          }
          // clean up
          mods = mods.replaceAll(",,", ",");
        }
        warn("Linking: " + mods);
        // jlink
        exec(javaHomePrefix() + "jlink", "--no-header-files", "--no-man-pages", "--compress=2", "--strip-debug", "--add-modules", mods, "--output", target);
      } else {
        fatal("Your JDK version does not support jlink (< 11)");
      }
    } catch (IOException | InterruptedException e) {
      fatal(e.getMessage());
    }
  }
}