/*
* Mojito Distributed Hash Table (Mojito DHT)
* Copyright (C) 2006-2007 LimeWire LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.limewire.mojito.handler.request;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.limewire.mojito.Context;
import org.limewire.mojito.db.DHTValueEntity;
import org.limewire.mojito.db.Database;
import org.limewire.mojito.messages.RequestMessage;
import org.limewire.mojito.messages.StoreRequest;
import org.limewire.mojito.messages.StoreResponse;
import org.limewire.mojito.messages.StoreResponse.StoreStatusCode;
import org.limewire.mojito.routing.Contact;
import org.limewire.security.SecurityToken;
import org.limewire.security.SecurityToken.TokenData;
/**
* Handles incoming store requests as
* sent by other Nodes. It performs some probability tests to
* make sure the request makes sense (i.e. if the Key is close
* to us and so on).
*/
public class StoreRequestHandler extends AbstractRequestHandler {
private static final Log LOG = LogFactory.getLog(StoreRequestHandler.class);
public StoreRequestHandler(Context context) {
super(context);
}
@Override
public void request(RequestMessage message) throws IOException {
StoreRequest request = (StoreRequest)message;
SecurityToken securityToken = request.getSecurityToken();
if (securityToken == null) {
if (LOG.isErrorEnabled()) {
LOG.error(request.getContact()
+ " does not provide a SecurityToken");
}
return;
}
Contact src = request.getContact();
TokenData expectedToken = context.getSecurityTokenHelper().createTokenData(src);
if (!securityToken.isFor(expectedToken)) {
if (LOG.isErrorEnabled()) {
LOG.error(request.getContact()
+ " send us an invalid SecurityToken " + securityToken);
}
return;
}
Collection<? extends DHTValueEntity> values = request.getDHTValueEntities();
List<StoreStatusCode> status
= new ArrayList<StoreStatusCode>(values.size());
Database database = context.getDatabase();
for (DHTValueEntity entity : values) {
if (database.store(entity)) {
status.add(new StoreStatusCode(entity, StoreResponse.OK));
} else {
status.add(new StoreStatusCode(entity, StoreResponse.ERROR));
}
}
StoreResponse response
= context.getMessageHelper().createStoreResponse(request, status);
context.getMessageDispatcher().send(request.getContact(), response);
}
}