/*
* The MIT License
*
* Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package hudson.lifecycle;
import hudson.FilePath;
import hudson.Launcher.LocalLauncher;
import hudson.Util;
import jenkins.model.Jenkins;
import hudson.util.StreamTaskListener;
import hudson.util.jna.Kernel32;
import static hudson.util.jna.Kernel32.MOVEFILE_DELAY_UNTIL_REBOOT;
import static hudson.util.jna.Kernel32.MOVEFILE_REPLACE_EXISTING;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.output.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* {@link Lifecycle} for Hudson installed as Windows service.
*
* @author Kohsuke Kawaguchi
* @see WindowsInstallerLink
*/
public class WindowsServiceLifecycle extends Lifecycle {
public WindowsServiceLifecycle() {
updateHudsonExeIfNeeded();
}
/**
* If <tt>hudson.exe</tt> is old compared to our copy,
* schedule an overwrite (except that since it's currently running,
* we can only do it when Hudson restarts next time.)
*/
private void updateHudsonExeIfNeeded() {
try {
File rootDir = Jenkins.getInstance().getRootDir();
URL exe = getClass().getResource("/windows-service/jenkins.exe");
String ourCopy = Util.getDigestOf(exe.openStream());
for (String name : new String[]{"hudson.exe","jenkins.exe"}) {
try {
File currentCopy = new File(rootDir,name);
if(!currentCopy.exists()) continue;
String curCopy = new FilePath(currentCopy).digest();
if(ourCopy.equals(curCopy)) continue; // identical
File stage = new File(rootDir,name+".new");
FileUtils.copyURLToFile(exe,stage);
Kernel32.INSTANCE.MoveFileExA(stage.getAbsolutePath(),currentCopy.getAbsolutePath(),MOVEFILE_DELAY_UNTIL_REBOOT|MOVEFILE_REPLACE_EXISTING);
LOGGER.info("Scheduled a replacement of "+name);
} catch (IOException e) {
LOGGER.log(Level.SEVERE, "Failed to replace "+name,e);
} catch (InterruptedException e) {
}
}
} catch (IOException e) {
LOGGER.log(Level.SEVERE, "Failed to replace hudson.exe",e);
}
}
/**
* On Windows, jenkins.war is locked, so we place a new version under a special name,
* which is picked up by the service wrapper upon restart.
*/
@Override
public void rewriteHudsonWar(File by) throws IOException {
File dest = getHudsonWar();
// this should be impossible given the canRewriteHudsonWar method,
// but let's be defensive
if(dest==null) throw new IOException("jenkins.war location is not known.");
// backing up the old jenkins.war before its lost due to upgrading
// unless we are trying to rewrite jenkins.war by a backup itself
File bak = new File(dest.getPath() + ".bak");
if (!by.equals(bak))
FileUtils.copyFile(dest, bak);
String baseName = dest.getName();
baseName = baseName.substring(0,baseName.indexOf('.'));
File rootDir = Jenkins.getInstance().getRootDir();
File copyFiles = new File(rootDir,baseName+".copies");
FileWriter w = new FileWriter(copyFiles, true);
w.write(by.getAbsolutePath()+'>'+getHudsonWar().getAbsolutePath()+'\n');
w.close();
}
@Override
public void restart() throws IOException, InterruptedException {
File me = getHudsonWar();
File home = me.getParentFile();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
StreamTaskListener task = new StreamTaskListener(baos);
task.getLogger().println("Restarting a service");
File executable = new File(home, "hudson.exe");
if (!executable.exists()) executable = new File(home, "jenkins.exe");
int r = new LocalLauncher(task).launch().cmds(executable, "restart")
.stdout(task).pwd(home).join();
if(r!=0)
throw new IOException(baos.toString());
}
private static final Logger LOGGER = Logger.getLogger(WindowsServiceLifecycle.class.getName());
}