/*
* 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 com.sun.jini.tool.envcheck.plugins;
import com.sun.jini.tool.envcheck.AbstractPlugin;
import com.sun.jini.tool.envcheck.Plugin;
import com.sun.jini.tool.envcheck.EnvCheck;
import com.sun.jini.tool.envcheck.Reporter;
import com.sun.jini.tool.envcheck.Reporter.Message;
import com.sun.jini.tool.envcheck.SubVMTask;
import com.sun.jini.tool.envcheck.Util;
import java.io.File;
import com.sun.jini.start.SharedActivationGroupDescriptor;
/**
* Check that the Java platform is at least version 1.4. This check is applied
* to the VM invoked by the command line being analyzed and the VM invoked by
* a <code>SharedActivationGroupDescriptor</code> if the
* descriptor's <code>getServerCommand()</code> method returns non-null.
*/
public class CheckJDK1_4 extends AbstractPlugin {
/** reference to the plugin container */
private EnvCheck envCheck;
/** name of task to execute */
private String taskName = taskName("JDK1_4Task");
/**
* Check the validity of the activation group VM (if there is one)
*
* @param envCheck the container
*/
public void run(EnvCheck envCheck) {
this.envCheck = envCheck;
checkMainVM();
checkGroupVM();
}
/**
* Check the activation group VM. If there is a
* <code>SharedActivationGroupDescriptor</code> available from the
* container, invoke a subtask which verifies that the VM used to run that
* group is at least version 1.4.
*/
private void checkGroupVM() {
SharedActivationGroupDescriptor gd = envCheck.getGroupDescriptor();
if (gd != null) {
String source;
String serverCommand = gd.getServerCommand();
if (serverCommand == null) {
source = getString("cmdlinejava", envCheck.getJavaCmd());
} else {
source = getString("groupjava", serverCommand);
}
processReturn(envCheck.launch(null, gd, taskName), source);
}
}
/**
* Check the vm invoked by the command-line java command.
*/
private void checkMainVM() {
String source = getString("mainsource", envCheck.getJavaCmd());
processReturn(envCheck.launch(taskName), source);
}
/**
* Process the object returned by the subtask. Prints a success or
* failure message based on the type and contents of <code>o</code>.
*
* @param o the object returned by the subtask
* @param source the source description
*/
private void processReturn(Object o, String source) {
if (o instanceof Boolean) {
Message message;
if (((Boolean) o).booleanValue()) {
message = new Message(Reporter.INFO,
getString("goodjdk"),
getString("jdkExp"));
} else {
message = new Message(Reporter.INFO,
getString("badjdk"),
getString("jdkExp"));
}
Reporter.print(message, source);
} else {
handleUnexpectedSubtaskReturn(o, source);
}
}
/**
* Subtask to check the VM version. If it is possible to load
* <code>java.rmi.server.RMIClassLoaderSpi</code>, then this VM is presumed
* to be at least version 1.4. The run method return a
* <code>Boolean(true)</code> if the version is OK.
*/
public static class JDK1_4Task implements SubVMTask {
public Object run(String[] args) {
try {
Class.forName("java.rmi.server.RMIClassLoaderSpi");
return new Boolean(true);
} catch (ClassNotFoundException e) {
return new Boolean(false);
}
}
}
}