/*
* Copyright (c) 2001-2004 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by Sun Microsystems, Inc. for JXTA(TM) technology."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this software
* without prior written permission. For written permission, please contact
* Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA", nor may
* "JXTA" appear in their name, without prior written permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SUN
* MICROSYSTEMS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* JXTA is a registered trademark of Sun Microsystems, Inc. in the United
* States and other countries.
*
* Please see the license information page at :
* <http://www.jxta.org/project/www/license.html> for instructions on use of
* the license in source files.
*
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of Project JXTA. For more information on Project JXTA, please see
* http://www.jxta.org.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*/
package net.jxta.impl.endpoint;
import net.jxta.document.AdvertisementFactory;
import net.jxta.document.XMLElement;
import net.jxta.logging.Logging;
import net.jxta.peergroup.PeerGroup;
import net.jxta.protocol.PeerAdvertisement;
import net.jxta.protocol.RouteAdvertisement;
import java.util.Enumeration;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Utility functions related to the Endpoint Service.
*/
public final class EndpointUtils {
/**
* Logger
*/
private static final transient Logger LOG = Logger.getLogger(EndpointUtils.class.getName());
/**
* Extracts a route advertisement from a peer advertisement.
*
* @param adv The peer advertisement believed to contain a route advertisement.
* @return The extracted route advertisement or {@code null} if a route
* advertisement could not be extracted.
*/
public static RouteAdvertisement extractRouteAdv(PeerAdvertisement adv) {
try {
// Get its EndpointService advertisement
XMLElement endpParam = (XMLElement) adv.getServiceParam(PeerGroup.endpointClassID);
if (endpParam == null) {
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("No Endpoint Params");
}
return null;
}
// get the Route Advertisement element
Enumeration paramChilds = endpParam.getChildren(RouteAdvertisement.getAdvertisementType());
XMLElement param;
if (paramChilds.hasMoreElements()) {
param = (XMLElement) paramChilds.nextElement();
} else {
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("No Route Adv in Peer Adv");
}
return null;
}
// build the new route
RouteAdvertisement route = (RouteAdvertisement) AdvertisementFactory.newAdvertisement(param);
// Embedded routes often don't contain the peer id.
route.setDestPeerID(adv.getPeerID());
return route;
} catch (Exception e) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.log(Level.WARNING, "failed to extract radv", e);
}
}
return null;
}
}