/*
* JBoss, Home of Professional Open Source.
* Copyright 2014, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.wildfly.clustering.web.infinispan.session;
import java.util.Map;
import org.infinispan.Cache;
import org.infinispan.distribution.DistributionManager;
import org.infinispan.remoting.transport.Address;
import org.wildfly.clustering.group.Node;
import org.wildfly.clustering.group.NodeFactory;
import org.wildfly.clustering.registry.Registry;
import org.wildfly.clustering.web.session.RouteLocator;
/**
* Uses Infinispan's {@link org.infinispan.distribution.DistributionManager} to determine the best node (i.e. the primary lock owner) to handle a given session.
* The {@link Address} is then converted to a route using a {@link Registry}, which maps the route identifier per node.
* @author Paul Ferraro
*/
public class InfinispanRouteLocator implements RouteLocator {
private final NodeFactory<Address> factory;
private final Registry<String, Void> registry;
private final Cache<String, ?> cache;
public InfinispanRouteLocator(InfinispanRouteLocatorConfiguration config) {
this.cache = config.getCache();
this.registry = config.getRegistry();
this.factory = config.getNodeFactory();
}
@Override
public String locate(String sessionId) {
Map.Entry<String, Void> entry = null;
Address location = this.locatePrimaryOwner(sessionId);
if (location != null) {
Node node = this.factory.createNode(location);
entry = this.registry.getEntry(node);
}
if (entry == null) {
// Accommodate mod_cluster's lazy route auto-generation
entry = this.registry.getLocalEntry();
}
return (entry != null) ? entry.getKey() : null;
}
private Address locatePrimaryOwner(String sessionId) {
DistributionManager dist = this.cache.getAdvancedCache().getDistributionManager();
return (dist != null) ? dist.getPrimaryLocation(sessionId) : this.cache.getCacheManager().getAddress();
}
}