/*
* 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 java.util.List;
import java.util.concurrent.RunnableFuture;
import com.google.common.util.concurrent.AbstractFuture;
import org.apache.cassandra.db.SnapshotCommand;
import org.apache.cassandra.net.IAsyncCallbackWithFailure;
import org.apache.cassandra.net.MessageIn;
import org.apache.cassandra.net.MessagingService;
/**
* SnapshotTask is a task that sends snapshot request.
*/
public class SnapshotTask extends AbstractFuture<InetAddress> implements RunnableFuture<InetAddress>
{
private final RepairJobDesc desc;
private final InetAddress endpoint;
public SnapshotTask(RepairJobDesc desc, InetAddress endpoint)
{
this.desc = desc;
this.endpoint = endpoint;
}
public void run()
{
MessagingService.instance().sendRRWithFailure(new SnapshotCommand(desc.keyspace,
desc.columnFamily,
desc.sessionId.toString(),
false).createMessage(),
endpoint,
new SnapshotCallback(this));
}
/**
* Callback for snapshot request. Run on INTERNAL_RESPONSE stage.
*/
static class SnapshotCallback implements IAsyncCallbackWithFailure
{
final SnapshotTask task;
SnapshotCallback(SnapshotTask task)
{
this.task = task;
}
/**
* When we received response from the node,
*
* @param msg response received.
*/
public void response(MessageIn msg)
{
task.set(task.endpoint);
}
public boolean isLatencyForSnitch() { return false; }
public void onFailure(InetAddress from)
{
task.setException(new RuntimeException("Could not create snapshot at " + from));
}
}
}