/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.teiid.jboss;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLClassLoader;
import java.security.PrivilegedActionException;
import java.util.Properties;
import org.jboss.logging.Logger;
/**
* Common login module utility methods
*
* @author Scott.Stark@jboss.org
* @version $Revision: 68749 $
*/
public class Util {
/**
* Utility method which loads the given properties file and returns a
* Properties object containing the key,value pairs in that file. The
* properties files should be in the class path as this method looks to the
* thread context class loader (TCL) to locate the resource. If the TCL is a
* URLClassLoader the findResource(String) method is first tried. If this
* fails or the TCL is not a URLClassLoader getResource(String) is tried. If
* not, an absolute path is tried.
*
* @param propertiesName
* - the name of the properties file resource
* @param log
* - the logger used for trace level messages
* @return the loaded properties file if found
* @exception java.io.IOException
* thrown if the properties file cannot be found or loaded
*/
static Properties loadProperties(String propertiesName, Logger log) throws IOException {
ClassLoader loader = ResourceActions.getContextClassLoader();
URL url = null;
// First check for local visibility via a URLClassLoader.findResource
if (loader instanceof URLClassLoader) {
URLClassLoader ucl = (URLClassLoader) loader;
url = ResourceActions.findResource(ucl, propertiesName);
log.trace("findResource: " + url); //$NON-NLS-1$
}
if (url == null)
url = loader.getResource(propertiesName);
if (url == null) {
url = new URL(propertiesName);
}
log.trace("Properties file=" + url); //$NON-NLS-1$
Properties bundle = new Properties();
InputStream is = null;
try {
is = ResourceActions.openStream(url);
} catch (PrivilegedActionException e) {
throw new IOException(e.getLocalizedMessage());
}
if (is != null) {
bundle.load(is);
is.close();
} else {
throw new IOException("Properties file " + propertiesName + " not available");//$NON-NLS-1$ //$NON-NLS-2$
}
log.debug("Loaded properties, users=" + bundle.keySet());//$NON-NLS-1$
return bundle;
}
}