ProcessConfig.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.process;

import com.liferay.portal.kernel.io.PathHolder;
import com.liferay.portal.kernel.util.ArrayUtil;
import com.liferay.portal.kernel.util.StringUtil;

import java.io.File;
import java.io.Serializable;

import java.util.Collections;
import java.util.List;

/**
 * @author Shuyang Zhou
 */
public class ProcessConfig implements Serializable {

	public List<String> getArguments() {
		return _arguments;
	}

	public String getBootstrapClassPath() {
		return StringUtil.merge(
			getBootstrapClassPathElements(), File.pathSeparator);
	}

	public String[] getBootstrapClassPathElements() {
		return ArrayUtil.toStringArray(_bootstrapClassPathHolders);
	}

	public String getJavaExecutable() {
		return _javaExecutable;
	}

	public ClassLoader getReactClassLoader() {
		return _reactClassLoader;
	}

	public String getRuntimeClassPath() {
		return StringUtil.merge(
			getRuntimeClassPathElements(), File.pathSeparator);
	}

	public String[] getRuntimeClassPathElements() {
		return ArrayUtil.toStringArray(_runtimeClassPathHolders);
	}

	public static class Builder {

		public ProcessConfig build() {
			return new ProcessConfig(this);
		}

		public Builder setArguments(List<String> arguments) {
			_arguments = arguments;

			return this;
		}

		public Builder setBootstrapClassPath(String bootstrapClassPath) {
			_bootstrapClassPath = bootstrapClassPath;

			return this;
		}

		public Builder setJavaExecutable(String javaExecutable) {
			_javaExecutable = javaExecutable;

			return this;
		}

		public Builder setReactClassLoader(ClassLoader reactClassLoader) {
			_reactClassLoader = reactClassLoader;

			return this;
		}

		public Builder setRuntimeClassPath(String runtimeClassPath) {
			_runtimeClassPath = runtimeClassPath;

			return this;
		}

		private List<String> _arguments = Collections.emptyList();
		private String _bootstrapClassPath = System.getProperty(
			"java.class.path");
		private String _javaExecutable = "java";
		private ClassLoader _reactClassLoader =
			ProcessConfig.class.getClassLoader();
		private String _runtimeClassPath = _bootstrapClassPath;

	}

	private ProcessConfig(Builder builder) {
		_arguments = builder._arguments;

		_bootstrapClassPathHolders = _toPathHolders(
			builder._bootstrapClassPath);

		_javaExecutable = builder._javaExecutable;
		_reactClassLoader = builder._reactClassLoader;

		_runtimeClassPathHolders = _toPathHolders(builder._runtimeClassPath);
	}

	private PathHolder[] _toPathHolders(String classPath) {
		String[] classPathElements = StringUtil.split(
			classPath, File.pathSeparatorChar);

		PathHolder[] classPathHolders =
			new PathHolder[classPathElements.length];

		for (int i = 0; i < classPathElements.length; i++) {
			classPathHolders[i] = new PathHolder(classPathElements[i]);
		}

		return classPathHolders;
	}

	private static final long serialVersionUID = 1L;

	private final List<String> _arguments;
	private final PathHolder[] _bootstrapClassPathHolders;
	private final String _javaExecutable;
	private final transient ClassLoader _reactClassLoader;
	private final PathHolder[] _runtimeClassPathHolders;

}