/*
* Copyright (c) 2006-2007 Hyperic, Inc.
*
* Licensed 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.hyperic.sigar.cmd;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.Date;
import org.hyperic.sigar.Sigar;
import org.hyperic.sigar.SigarException;
import org.hyperic.sigar.DirStat;
import org.hyperic.sigar.FileInfo;
import org.hyperic.sigar.FileWatcher;
import org.hyperic.sigar.FileWatcherThread;
import org.hyperic.sigar.ProcFileMirror;
/**
* Watch a file or directory displaying attribute changes.
*/
public class Watch {
private static void printHeader(Sigar sigar, FileInfo info)
throws SigarException {
String file = info.getName();
FileInfo link = sigar.getLinkInfo(file);
if (link.getType() == FileInfo.TYPE_LNK) {
try {
System.out.println(file + " -> " +
new File(file).getCanonicalPath());
} catch (IOException e) {
e.printStackTrace();
}
}
System.out.println(link.getTypeChar() +
info.getPermissionsString() + "\t" +
info.getUid() + "\t" + info.getGid() + "\t" +
info.getSize() + "\t" +
new Date(info.getMtime()) + "\t" +
file);
if (info.getType() == FileInfo.TYPE_DIR) {
info.enableDirStat(true);
DirStat stats = sigar.getDirStat(file);
System.out.println(" Files......." + stats.getFiles());
System.out.println(" Subdirs....." + stats.getSubdirs());
System.out.println(" Symlinks...." + stats.getSymlinks());
System.out.println(" Chrdevs....." + stats.getChrdevs());
System.out.println(" Blkdevs....." + stats.getBlkdevs());
System.out.println(" Sockets....." + stats.getSockets());
System.out.println(" Total......." + stats.getTotal());
System.out.println(" Disk Usage.." + stats.getDiskUsage());
}
}
private static void add(Sigar sigar,
FileWatcher watcher,
String file,
boolean recurse)
throws SigarException {
FileInfo info = watcher.add(file);
printHeader(sigar, info);
if (!recurse) {
return;
}
if (info.getType() == FileInfo.TYPE_DIR) {
File[] dirs =
new File(info.getName()).listFiles(new FileFilter() {
public boolean accept(File file) {
return file.isDirectory() && file.canRead();
}
});
for (int i=0; i<dirs.length; i++) {
add(sigar, watcher, dirs[i].getAbsolutePath(), recurse);
}
}
}
public static void main(String[] args) throws SigarException {
boolean recurse = false;
Sigar sigar = new Sigar();
FileWatcherThread watcherThread =
FileWatcherThread.getInstance();
watcherThread.setInterval(1000);
FileWatcher watcher =
new FileWatcher(sigar) {
public void onChange(FileInfo info) {
System.out.println(info.getName() +
" Changed:\n" +
info.diff());
}
public void onNotFound(FileInfo info) {
System.out.println(info.getName() + " no longer exists");
remove(info.getName());
}
public void onException(FileInfo info, SigarException e) {
System.out.println("Error checking " + info.getName() + ":");
e.printStackTrace();
}
};
ProcFileMirror mirror =
new ProcFileMirror(sigar, "./proc");
watcher.setInterval(watcherThread.getInterval());
mirror.setInterval(watcherThread.getInterval());
mirror.setExpire(60);
for (int i=0; i<args.length; i++) {
String arg = args[i];
if (arg.startsWith("/proc/")) {
mirror.add(arg);
arg = mirror.getProcFile(arg);
add(sigar, watcher, arg, false);
}
else if (arg.equals("-r")) {
recurse = true;
}
else {
add(sigar, watcher, arg, recurse);
}
}
watcherThread.add(mirror);
watcherThread.add(watcher);
watcherThread.doStart();
System.out.println("Press any key to stop");
try {
System.in.read();
} catch (IOException e) { }
watcherThread.doStop();
}
}