| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package org.apache.geode.internal.util; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Properties; |
| |
| import org.apache.geode.distributed.internal.DistributionConfig; |
| |
| /** |
| * A utility class for building up arguments used in spawning another VM |
| **/ |
| public class JavaCommandBuilder { |
| |
| /** |
| * Builds a command line containing all basic arguments required by java |
| * |
| * @return cmdVec - The caller can then add additional arguments |
| */ |
| public static List<String> buildCommand(final String className, final String additionalClasspath, |
| final Properties systemProperties, final List<String> jvmOptions) { |
| final List<String> javaCommandLine = new ArrayList<String>(); |
| |
| final File javaBinDir = new File(System.getProperty("java.home"), "bin"); |
| final File javaCommand = new File(javaBinDir, "java"); |
| |
| javaCommandLine.add(javaCommand.getPath()); |
| |
| final String dashServerArg = getDashServerArg(javaBinDir); |
| |
| if (dashServerArg != null) { |
| javaCommandLine.add(dashServerArg); |
| } |
| |
| if (jvmOptions != null) { |
| for (final String jvmOption : jvmOptions) { |
| javaCommandLine.add(jvmOption); |
| } |
| } |
| |
| javaCommandLine.add("-classpath"); |
| javaCommandLine.add(buildClasspath(additionalClasspath)); |
| |
| if (systemProperties != null) { |
| for (final Object key : systemProperties.keySet()) { |
| javaCommandLine.add("-D" + key + "=" + systemProperties.getProperty(key.toString())); |
| } |
| } |
| |
| javaCommandLine.add(className); |
| |
| return javaCommandLine; |
| } |
| |
| private static String buildClasspath(final String additionalClasspath) { |
| final StringBuilder classpath = new StringBuilder(System.getProperty("java.class.path")); |
| |
| if (additionalClasspath != null) { |
| classpath.append(File.pathSeparator); |
| classpath.append(additionalClasspath); |
| } |
| |
| return classpath.toString(); |
| } |
| |
| private static String getDashServerArg(final File javaBinDir) { |
| // the gemfire.vmarg.dashserver property allows customers to add a custom argument in place of |
| // -server |
| final String altDashServerArg = |
| System.getProperty(DistributionConfig.GEMFIRE_PREFIX + "vmarg.dashserver", null); |
| return (altDashServerArg != null ? altDashServerArg |
| : (omitDashServerArg(javaBinDir) ? null : "-server")); |
| } |
| |
| /** |
| * Determine if the -server argument should be omitted for this vm |
| * |
| * @param javaBinDir - the path to the bin directory of java |
| * @return true if the VM is known not to support the -server arg |
| */ |
| private static boolean omitDashServerArg(final File javaBinDir) { |
| final String vendor = System.getProperty("java.vm.vendor"); |
| |
| if (vendor != null) { |
| final String vendorUpperCase = vendor.toUpperCase(); |
| |
| if (vendorUpperCase.startsWith("IBM")) { |
| return true; |
| } |
| |
| if (vendorUpperCase.startsWith("SUN")) { |
| final String os = System.getProperty("os.name"); |
| |
| if (os != null && os.indexOf("Windows") != -1) { |
| final File serverDir = new File(javaBinDir, "server"); |
| |
| if (!serverDir.isDirectory()) { |
| // On Windows with a Sun JVM and there is no ${java.home}/bin/server directory |
| // This is true for the 32bit JRE, but not for the JDK |
| // Note: this also returns true for 64 bit VMs but that is ok because -server is the |
| // default. |
| return true; |
| } |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| } |