org.geoserver.security.PropertyFileWatcher Maven / Gradle / Ivy
/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, availible at the root
* application directory.
*/
package org.geoserver.security;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
/**
* A simple class to support reloadable property files. Watches last modified
* date on the specified file, and allows to read a Properties out of it.
*
* @author Administrator
*
*/
public class PropertyFileWatcher {
File file;
private long lastModified = Long.MIN_VALUE;
public PropertyFileWatcher(File file) {
this.file = file;
}
public Properties getProperties() throws IOException {
Properties p = new Properties();
if (file.exists()) {
InputStream is = null;
try {
is = new FileInputStream(file);
p.load(is);
lastModified = file.lastModified();
} finally {
if (is != null) {
is.close();
}
}
}
return p;
}
public boolean isStale() {
return file.exists() && (file.lastModified() > lastModified);
}
}