/*
* Copyright 2009-2012 Roger Kapsi
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ardverk.dht.io;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import javax.inject.Provider;
import org.ardverk.dht.KUID;
import org.ardverk.dht.config.NodeConfig;
import org.ardverk.dht.entity.NodeEntity;
import org.ardverk.dht.message.MessageFactory;
import org.ardverk.dht.message.MessageType;
import org.ardverk.dht.message.NodeRequest;
import org.ardverk.dht.message.NodeResponse;
import org.ardverk.dht.message.ResponseMessage;
import org.ardverk.dht.routing.Contact;
import org.ardverk.dht.routing.RouteTable;
/**
* The {@link NodeResponseHandler} manages a {@link MessageType#FIND_NODE}
* lookup process.
*/
public class NodeResponseHandler extends LookupResponseHandler<NodeEntity> {
public NodeResponseHandler(Provider<MessageDispatcher> messageDispatcher,
Contact[] contacts, RouteTable routeTable, KUID lookupId, NodeConfig config) {
super(messageDispatcher, contacts, routeTable, lookupId, config);
}
@Override
protected void lookup(Contact dst, KUID lookupId,
long timeout, TimeUnit unit) throws IOException {
MessageFactory factory = getMessageFactory();
NodeRequest message = factory.createNodeRequest(dst, lookupId);
send(dst, message, timeout, unit);
}
@Override
protected void complete(Outcome outcome) {
Contact[] contacts = outcome.getContacts();
if (contacts.length == 0) {
setException(new NoSuchNodeException(outcome));
} else {
setValue(new NodeEntity(outcome));
}
}
@Override
protected synchronized void processResponse0(RequestEntity entity,
ResponseMessage response, long time, TimeUnit unit)
throws IOException {
Contact src = response.getContact();
Contact[] contacts = ((NodeResponse)response).getContacts();
processContacts(src, contacts, time, unit);
}
}