| /* |
| * 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.List; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.base.Preconditions; |
| import com.google.common.util.concurrent.AbstractFuture; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.dht.Range; |
| import org.apache.cassandra.dht.Token; |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.streaming.PreviewKind; |
| import org.apache.cassandra.tracing.Tracing; |
| |
| public abstract class SyncTask extends AbstractFuture<SyncStat> implements Runnable |
| { |
| private static final Logger logger = LoggerFactory.getLogger(SyncTask.class); |
| |
| protected final RepairJobDesc desc; |
| @VisibleForTesting |
| public final List<Range<Token>> rangesToSync; |
| protected final PreviewKind previewKind; |
| protected final SyncNodePair nodePair; |
| |
| protected volatile long startTime = Long.MIN_VALUE; |
| protected final SyncStat stat; |
| |
| protected SyncTask(RepairJobDesc desc, InetAddressAndPort primaryEndpoint, InetAddressAndPort peer, List<Range<Token>> rangesToSync, PreviewKind previewKind) |
| { |
| Preconditions.checkArgument(!peer.equals(primaryEndpoint), "Sending and receiving node are the same: %s", peer); |
| this.desc = desc; |
| this.rangesToSync = rangesToSync; |
| this.nodePair = new SyncNodePair(primaryEndpoint, peer); |
| this.previewKind = previewKind; |
| this.stat = new SyncStat(nodePair, rangesToSync.size()); |
| } |
| |
| protected abstract void startSync(); |
| |
| public SyncNodePair nodePair() |
| { |
| return nodePair; |
| } |
| |
| /** |
| * Compares trees, and triggers repairs for any ranges that mismatch. |
| */ |
| public final void run() |
| { |
| startTime = System.currentTimeMillis(); |
| |
| |
| // choose a repair method based on the significance of the difference |
| String format = String.format("%s Endpoints %s and %s %%s for %s", previewKind.logPrefix(desc.sessionId), nodePair.coordinator, nodePair.peer, desc.columnFamily); |
| if (rangesToSync.isEmpty()) |
| { |
| logger.info(String.format(format, "are consistent")); |
| Tracing.traceRepair("Endpoint {} is consistent with {} for {}", nodePair.coordinator, nodePair.peer, desc.columnFamily); |
| set(stat); |
| return; |
| } |
| |
| // non-0 difference: perform streaming repair |
| logger.info(String.format(format, "have " + rangesToSync.size() + " range(s) out of sync")); |
| Tracing.traceRepair("Endpoint {} has {} range(s) out of sync with {} for {}", nodePair.coordinator, rangesToSync.size(), nodePair.peer, desc.columnFamily); |
| startSync(); |
| } |
| |
| public boolean isLocal() |
| { |
| return false; |
| } |
| |
| protected void finished() |
| { |
| if (startTime != Long.MIN_VALUE) |
| Keyspace.open(desc.keyspace).getColumnFamilyStore(desc.columnFamily).metric.repairSyncTime.update(System.currentTimeMillis() - startTime, TimeUnit.MILLISECONDS); |
| } |
| |
| public void abort() {} |
| } |