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/*
* 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.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Objects;
import com.google.common.collect.Lists;
import com.google.common.util.concurrent.FutureCallback;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.concurrent.ExecutorPlus;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.repair.messages.RepairOption;
import org.apache.cassandra.service.ActiveRepairService;
import org.apache.cassandra.utils.TimeUUID;
import org.apache.cassandra.utils.concurrent.Future;
import org.apache.cassandra.utils.concurrent.FutureCombiner;
public abstract class AbstractRepairTask implements RepairTask
{
protected static final Logger logger = LoggerFactory.getLogger(AbstractRepairTask.class);
protected final RepairOption options;
protected final String keyspace;
protected final RepairNotifier notifier;
protected AbstractRepairTask(RepairOption options, String keyspace, RepairNotifier notifier)
{
this.options = Objects.requireNonNull(options);
this.keyspace = Objects.requireNonNull(keyspace);
this.notifier = Objects.requireNonNull(notifier);
}
private List<RepairSession> submitRepairSessions(TimeUUID parentSession,
boolean isIncremental,
ExecutorPlus executor,
List<CommonRange> commonRanges,
String... cfnames)
{
List<RepairSession> futures = new ArrayList<>(options.getRanges().size());
for (CommonRange commonRange : commonRanges)
{
logger.info("Starting RepairSession for {}", commonRange);
RepairSession session = ActiveRepairService.instance.submitRepairSession(parentSession,
commonRange,
keyspace,
options.getParallelism(),
isIncremental,
options.isPullRepair(),
options.getPreviewKind(),
options.optimiseStreams(),
options.repairPaxos(),
options.paxosOnly(),
executor,
cfnames);
if (session == null)
continue;
session.addCallback(new RepairSessionCallback(session));
futures.add(session);
}
return futures;
}
protected Future<CoordinatedRepairResult> runRepair(TimeUUID parentSession,
boolean isIncremental,
ExecutorPlus executor,
List<CommonRange> commonRanges,
String... cfnames)
{
List<RepairSession> allSessions = submitRepairSessions(parentSession, isIncremental, executor, commonRanges, cfnames);
List<Collection<Range<Token>>> ranges = Lists.transform(allSessions, RepairSession::ranges);
Future<List<RepairSessionResult>> f = FutureCombiner.successfulOf(allSessions);
return f.map(results -> {
logger.debug("Repair result: {}", results);
return CoordinatedRepairResult.create(ranges, results);
});
}
private class RepairSessionCallback implements FutureCallback<RepairSessionResult>
{
private final RepairSession session;
public RepairSessionCallback(RepairSession session)
{
this.session = session;
}
public void onSuccess(RepairSessionResult result)
{
String message = String.format("Repair session %s for range %s finished", session.getId(),
session.ranges().toString());
notifier.notifyProgress(message);
}
public void onFailure(Throwable t)
{
String message = String.format("Repair session %s for range %s failed with error %s",
session.getId(), session.ranges().toString(), t.getMessage());
notifier.notifyError(new RuntimeException(message, t));
}
}
}