org.apache.cassandra.io.sstable.metadata.LegacyMetadataSerializer Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of cassandra-all Show documentation
Show all versions of cassandra-all Show documentation
A fork of the Apache Cassandra Project ready to embed Elasticsearch.
/*
* 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.io.sstable.metadata;
import java.io.*;
import java.nio.ByteBuffer;
import java.util.*;
import org.apache.cassandra.db.TypeSizes;
import org.apache.cassandra.db.commitlog.CommitLogPosition;
import org.apache.cassandra.db.commitlog.IntervalSet;
import org.apache.cassandra.io.sstable.Component;
import org.apache.cassandra.io.sstable.Descriptor;
import org.apache.cassandra.io.sstable.format.Version;
import org.apache.cassandra.io.util.DataInputPlus.DataInputStreamPlus;
import org.apache.cassandra.io.util.DataOutputPlus;
import org.apache.cassandra.service.ActiveRepairService;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.EstimatedHistogram;
import org.apache.cassandra.utils.StreamingHistogram;
import static org.apache.cassandra.io.sstable.metadata.StatsMetadata.commitLogPositionSetSerializer;
/**
* Serializer for SSTable from legacy versions
*/
@Deprecated
public class LegacyMetadataSerializer extends MetadataSerializer
{
/**
* Legacy serialization is only used for SSTable level reset.
*/
@Override
public void serialize(Map components, DataOutputPlus out, Version version) throws IOException
{
ValidationMetadata validation = (ValidationMetadata) components.get(MetadataType.VALIDATION);
StatsMetadata stats = (StatsMetadata) components.get(MetadataType.STATS);
CompactionMetadata compaction = (CompactionMetadata) components.get(MetadataType.COMPACTION);
assert validation != null && stats != null && compaction != null && validation.partitioner != null;
EstimatedHistogram.serializer.serialize(stats.estimatedPartitionSize, out);
EstimatedHistogram.serializer.serialize(stats.estimatedColumnCount, out);
CommitLogPosition.serializer.serialize(stats.commitLogIntervals.upperBound().orElse(CommitLogPosition.NONE), out);
out.writeLong(stats.minTimestamp);
out.writeLong(stats.maxTimestamp);
out.writeInt(stats.maxLocalDeletionTime);
out.writeDouble(validation.bloomFilterFPChance);
out.writeDouble(stats.compressionRatio);
out.writeUTF(validation.partitioner);
out.writeInt(0); // compaction ancestors
StreamingHistogram.serializer.serialize(stats.estimatedTombstoneDropTime, out);
out.writeInt(stats.sstableLevel);
out.writeInt(stats.minClusteringValues.size());
for (ByteBuffer value : stats.minClusteringValues)
ByteBufferUtil.writeWithShortLength(value, out);
out.writeInt(stats.maxClusteringValues.size());
for (ByteBuffer value : stats.maxClusteringValues)
ByteBufferUtil.writeWithShortLength(value, out);
if (version.hasCommitLogLowerBound())
CommitLogPosition.serializer.serialize(stats.commitLogIntervals.lowerBound().orElse(CommitLogPosition.NONE), out);
if (version.hasCommitLogIntervals())
commitLogPositionSetSerializer.serialize(stats.commitLogIntervals, out);
}
/**
* Legacy serializer deserialize all components no matter what types are specified.
*/
@Override
public Map deserialize(Descriptor descriptor, EnumSet types) throws IOException
{
Map components = new EnumMap<>(MetadataType.class);
File statsFile = new File(descriptor.filenameFor(Component.STATS));
if (!statsFile.exists() && types.contains(MetadataType.STATS))
{
components.put(MetadataType.STATS, MetadataCollector.defaultStatsMetadata());
}
else
{
try (DataInputStreamPlus in = new DataInputStreamPlus(new BufferedInputStream(new FileInputStream(statsFile))))
{
EstimatedHistogram partitionSizes = EstimatedHistogram.serializer.deserialize(in);
EstimatedHistogram columnCounts = EstimatedHistogram.serializer.deserialize(in);
CommitLogPosition commitLogLowerBound = CommitLogPosition.NONE;
CommitLogPosition commitLogUpperBound = CommitLogPosition.serializer.deserialize(in);
long minTimestamp = in.readLong();
long maxTimestamp = in.readLong();
int maxLocalDeletionTime = in.readInt();
double bloomFilterFPChance = in.readDouble();
double compressionRatio = in.readDouble();
String partitioner = in.readUTF();
int nbAncestors = in.readInt(); //skip compaction ancestors
in.skipBytes(nbAncestors * TypeSizes.sizeof(nbAncestors));
StreamingHistogram tombstoneHistogram = StreamingHistogram.serializer.deserialize(in);
int sstableLevel = 0;
if (in.available() > 0)
sstableLevel = in.readInt();
int colCount = in.readInt();
List minColumnNames = new ArrayList<>(colCount);
for (int i = 0; i < colCount; i++)
minColumnNames.add(ByteBufferUtil.readWithShortLength(in));
colCount = in.readInt();
List maxColumnNames = new ArrayList<>(colCount);
for (int i = 0; i < colCount; i++)
maxColumnNames.add(ByteBufferUtil.readWithShortLength(in));
if (descriptor.version.hasCommitLogLowerBound())
commitLogLowerBound = CommitLogPosition.serializer.deserialize(in);
IntervalSet commitLogIntervals;
if (descriptor.version.hasCommitLogIntervals())
commitLogIntervals = commitLogPositionSetSerializer.deserialize(in);
else
commitLogIntervals = new IntervalSet<>(commitLogLowerBound, commitLogUpperBound);
if (types.contains(MetadataType.VALIDATION))
components.put(MetadataType.VALIDATION,
new ValidationMetadata(partitioner, bloomFilterFPChance));
if (types.contains(MetadataType.STATS))
components.put(MetadataType.STATS,
new StatsMetadata(partitionSizes,
columnCounts,
commitLogIntervals,
minTimestamp,
maxTimestamp,
Integer.MAX_VALUE,
maxLocalDeletionTime,
0,
Integer.MAX_VALUE,
compressionRatio,
tombstoneHistogram,
sstableLevel,
minColumnNames,
maxColumnNames,
true,
ActiveRepairService.UNREPAIRED_SSTABLE,
-1,
-1));
if (types.contains(MetadataType.COMPACTION))
components.put(MetadataType.COMPACTION,
new CompactionMetadata(null));
}
}
return components;
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy