| /* |
| * 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.util.concurrent.RunnableFuture; |
| |
| import com.google.common.util.concurrent.AbstractFuture; |
| |
| import org.apache.cassandra.exceptions.RequestFailureReason; |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.net.RequestCallback; |
| import org.apache.cassandra.net.Message; |
| import org.apache.cassandra.net.MessagingService; |
| import org.apache.cassandra.repair.messages.SnapshotMessage; |
| |
| import static org.apache.cassandra.net.Verb.SNAPSHOT_MSG; |
| |
| /** |
| * SnapshotTask is a task that sends snapshot request. |
| */ |
| public class SnapshotTask extends AbstractFuture<InetAddressAndPort> implements RunnableFuture<InetAddressAndPort> |
| { |
| private final RepairJobDesc desc; |
| private final InetAddressAndPort endpoint; |
| |
| SnapshotTask(RepairJobDesc desc, InetAddressAndPort endpoint) |
| { |
| this.desc = desc; |
| this.endpoint = endpoint; |
| } |
| |
| public void run() |
| { |
| MessagingService.instance().sendWithCallback(Message.out(SNAPSHOT_MSG, new SnapshotMessage(desc)), |
| endpoint, |
| new SnapshotCallback(this)); |
| } |
| |
| /** |
| * Callback for snapshot request. Run on INTERNAL_RESPONSE stage. |
| */ |
| static class SnapshotCallback implements RequestCallback |
| { |
| final SnapshotTask task; |
| |
| SnapshotCallback(SnapshotTask task) |
| { |
| this.task = task; |
| } |
| |
| /** |
| * When we received response from the node, |
| * |
| * @param msg response received. |
| */ |
| @Override |
| public void onResponse(Message msg) |
| { |
| task.set(task.endpoint); |
| } |
| |
| @Override |
| public boolean invokeOnFailure() |
| { |
| return true; |
| } |
| |
| @Override |
| public void onFailure(InetAddressAndPort from, RequestFailureReason failureReason) |
| { |
| task.setException(new RuntimeException("Could not create snapshot at " + from)); |
| } |
| } |
| } |