org.glassfish.appclient.client.ExitManager Maven / Gradle / Ivy
Show all versions of payara-client Show documentation
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.glassfish.appclient.client;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Encapsulates the logic related to intercepting exceptions
* and VM exits in a test environment and creating a disk file which records
* the results. Typically a test script would wait for the file to appear
* and then read it to find out the results of the Java Web Start launch.
*
* The report file format contains one line with the exit status value, then
* possibly additional lines containing stack trace information.
*
* The status is written to a temp file, then that file is renamed to the
* selected status file. This prevents a script waiting for the status file to
* appear from seeing the file appear before it has been written and closed and
* thereby not being able to read the status file's contents correctly.
*
* @author Tim Quinn
*/
class ExitManager implements Runnable {
private final File tempStatusFile;
private final File statusFile;
private PrintWriter reportWriter;
private CommentWriter commentWriter;
private Throwable reportedFailure = null;
private AtomicInteger reportedStatus = new AtomicInteger(0);
private static final Logger logger = Logger.getLogger(ExitManager.class.getName());
ExitManager(final String testReportLocation) {
statusFile = new File(statusFileName(testReportLocation));
tempStatusFile = new File(statusTempFileName(testReportLocation));
prepareReportWriter(tempStatusFile);
Runtime.getRuntime().addShutdownHook(new Thread(this));
logger.log(Level.FINE, "ExitManager initialized");
}
/**
* Executes when shutdown is in progress. Writes any recorded exit status
* to the status file and, if a failure has been reported, writes the
* stack trace to the file as well.
*
* The file is readable as a properties file. (The stack trace is written
* as comments.)
*/
@Override
public void run() {
logger.log(Level.FINE, "ExitManager writing output");
reportWriter.println("jws.exit.status=" + reportedStatus);
if (reportedFailure != null) {
reportedFailure.printStackTrace(commentWriter);
}
reportWriter.close();
if ( ! tempStatusFile.renameTo(statusFile)) {
throw new RuntimeException("Could not rename temp status file from " +
tempStatusFile.getAbsolutePath() + " to " +
statusFile.getAbsolutePath());
}
}
private void prepareReportWriter(final File tempTestReportFile) {
try {
reportWriter = new PrintWriter(tempTestReportFile);
commentWriter = new CommentWriter(reportWriter);
logger.log(Level.FINE, "PrintWriter for temp exit file {0} ready",
tempTestReportFile.getAbsolutePath());
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
private String statusFileName(final String testReportLocation) {
return testReportLocation + ".status";
}
private String statusTempFileName(final String testReportLocation) {
return statusFileName(testReportLocation) + ".tmp";
}
void recordFailure(final Throwable t) {
logger.log(Level.FINE, "Recording failure", t);
reportedFailure = t;
recordExit(1);
}
void recordExit(final int status) {
logger.log(Level.FINE, "Recording exit {0}", status);
reportedStatus.set(status);
}
private static class CommentWriter extends PrintWriter {
private CommentWriter(final PrintWriter delegate) {
super(delegate);
}
@Override
public void println() {
super.println();
print("#");
}
}
}