/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cassandra.repair;
import java.net.InetAddress;
import com.google.common.util.concurrent.AbstractFuture;
import org.apache.cassandra.exceptions.RepairException;
import org.apache.cassandra.net.MessagingService;
import org.apache.cassandra.repair.messages.ValidationRequest;
import org.apache.cassandra.utils.MerkleTree;
/**
* ValidationTask sends {@link ValidationRequest} to a replica.
* When a replica sends back message, task completes.
*/
public class ValidationTask extends AbstractFuture<TreeResponse> implements Runnable
{
private final RepairJobDesc desc;
private final InetAddress endpoint;
private final int gcBefore;
public ValidationTask(RepairJobDesc desc, InetAddress endpoint, int gcBefore)
{
this.desc = desc;
this.endpoint = endpoint;
this.gcBefore = gcBefore;
}
/**
* Send ValidationRequest to replica
*/
public void run()
{
ValidationRequest request = new ValidationRequest(desc, gcBefore);
MessagingService.instance().sendOneWay(request.createMessage(), endpoint);
}
/**
* Receive MerkleTree from replica node.
*
* @param tree MerkleTree that is sent from replica. Null if validation failed on replica node.
*/
public void treeReceived(MerkleTree tree)
{
if (tree == null)
{
setException(new RepairException(desc, "Validation failed in " + endpoint));
}
else
{
set(new TreeResponse(endpoint, tree));
}
}
}