//
// $Id$
//
// Vilya library - tools for developing networked games
// Copyright (C) 2002-2012 Three Rings Design, Inc., All Rights Reserved
// http://code.google.com/p/vilya/
//
// This library 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 library 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 library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package com.threerings.whirled.zone.peer.server;
import com.google.common.base.Function;
import com.google.inject.Inject;
import com.samskivert.util.Lifecycle;
import com.samskivert.util.Tuple;
import com.threerings.util.Name;
import com.threerings.presents.peer.data.NodeObject;
import com.threerings.crowd.peer.server.CrowdPeerManager;
import com.threerings.whirled.zone.peer.data.HostedZone;
import static com.threerings.whirled.zone.Log.log;
public abstract class ZonePeerManager extends CrowdPeerManager
{
/**
* Creates an uninitialized peer manager.
*/
@Inject public ZonePeerManager (Lifecycle cycle)
{
super(cycle);
}
@Override // from CrowdPeerManager
protected NodeObject createNodeObject ()
{
return new ZoneNodeObject();
}
/** Returns a lock used to claim resolution of the specified scene. */
public static NodeObject.Lock getZoneLock (int sceneId)
{
return new NodeObject.Lock("ZoneHost", sceneId);
}
/**
* Returns the node name of the peer that is hosting the specified scene, or null if no peer
* has published that they are hosting the scene.
*/
public Tuple<String, HostedZone> getZoneHost (final int zoneId)
{
return lookupNodeDatum(new NodeFunc<Tuple<String, HostedZone>>() {
@Override
public Tuple<String, HostedZone> apply (ZoneNodeObject nodeobj) {
HostedZone info = nodeobj.hostedZones.get(zoneId);
return (info == null) ? null : Tuple.newTuple(nodeobj.nodeName, info);
}
});
}
/**
* Called by the ZoneManager when it is hosting a zone.
*/
public void zoneDidStartup (int zoneId, Name name)
{
log.debug("Hosting zone", "id", zoneId, "name", name);
((ZoneNodeObject)_nodeobj).addToHostedZones(new HostedZone(zoneId, name));
}
/**
* Called by the ZoneManager when it is no longer hosting a scene.
*/
public void zoneDidShutdown (int zoneId)
{
log.debug("No longer hosting zone", "id", zoneId);
((ZoneNodeObject)_nodeobj).removeFromHostedZones(zoneId);
}
/** Useful with {@link #lookupNodeDatum}. */
public static abstract class NodeFunc<T> implements Function<NodeObject, T>
{
public abstract T apply (ZoneNodeObject mnobj);
public T apply (NodeObject nodeobj) {
return apply((ZoneNodeObject)nodeobj);
}
}
}