| /* |
| * 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.format; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.UUID; |
| |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| import org.apache.cassandra.db.DecoratedKey; |
| import org.apache.cassandra.db.Directories; |
| import org.apache.cassandra.db.PartitionPosition; |
| import org.apache.cassandra.db.SerializationHeader; |
| import org.apache.cassandra.db.lifecycle.LifecycleTransaction; |
| import org.apache.cassandra.db.rows.UnfilteredRowIterator; |
| import org.apache.cassandra.io.sstable.Descriptor; |
| import org.apache.cassandra.io.sstable.SSTableMultiWriter; |
| import org.apache.cassandra.service.StorageService; |
| import org.apache.cassandra.utils.FBUtilities; |
| |
| public class RangeAwareSSTableWriter implements SSTableMultiWriter |
| { |
| private final List<PartitionPosition> boundaries; |
| private final Directories.DataDirectory[] directories; |
| private final int sstableLevel; |
| private final long estimatedKeys; |
| private final long repairedAt; |
| private final SSTableFormat.Type format; |
| private final SerializationHeader header; |
| private final LifecycleTransaction txn; |
| private int currentIndex = -1; |
| public final ColumnFamilyStore cfs; |
| private final List<SSTableMultiWriter> finishedWriters = new ArrayList<>(); |
| private final List<SSTableReader> finishedReaders = new ArrayList<>(); |
| private SSTableMultiWriter currentWriter = null; |
| |
| public RangeAwareSSTableWriter(ColumnFamilyStore cfs, long estimatedKeys, long repairedAt, SSTableFormat.Type format, int sstableLevel, long totalSize, LifecycleTransaction txn, SerializationHeader header) throws IOException |
| { |
| directories = cfs.getDirectories().getWriteableLocations(); |
| this.sstableLevel = sstableLevel; |
| this.cfs = cfs; |
| this.estimatedKeys = estimatedKeys / directories.length; |
| this.repairedAt = repairedAt; |
| this.format = format; |
| this.txn = txn; |
| this.header = header; |
| boundaries = StorageService.getDiskBoundaries(cfs, directories); |
| if (boundaries == null) |
| { |
| Directories.DataDirectory localDir = cfs.getDirectories().getWriteableLocation(totalSize); |
| if (localDir == null) |
| throw new IOException(String.format("Insufficient disk space to store %s", |
| FBUtilities.prettyPrintMemory(totalSize))); |
| Descriptor desc = Descriptor.fromFilename(cfs.getSSTablePath(cfs.getDirectories().getLocationForDisk(localDir), format)); |
| currentWriter = cfs.createSSTableMultiWriter(desc, estimatedKeys, repairedAt, sstableLevel, header, txn); |
| } |
| } |
| |
| private void maybeSwitchWriter(DecoratedKey key) |
| { |
| if (boundaries == null) |
| return; |
| |
| boolean switched = false; |
| while (currentIndex < 0 || key.compareTo(boundaries.get(currentIndex)) > 0) |
| { |
| switched = true; |
| currentIndex++; |
| } |
| |
| if (switched) |
| { |
| if (currentWriter != null) |
| finishedWriters.add(currentWriter); |
| |
| Descriptor desc = Descriptor.fromFilename(cfs.getSSTablePath(cfs.getDirectories().getLocationForDisk(directories[currentIndex])), format); |
| currentWriter = cfs.createSSTableMultiWriter(desc, estimatedKeys, repairedAt, sstableLevel, header, txn); |
| } |
| } |
| |
| public boolean append(UnfilteredRowIterator partition) |
| { |
| maybeSwitchWriter(partition.partitionKey()); |
| return currentWriter.append(partition); |
| } |
| |
| @Override |
| public Collection<SSTableReader> finish(long repairedAt, long maxDataAge, boolean openResult) |
| { |
| if (currentWriter != null) |
| finishedWriters.add(currentWriter); |
| currentWriter = null; |
| for (SSTableMultiWriter writer : finishedWriters) |
| { |
| if (writer.getFilePointer() > 0) |
| finishedReaders.addAll(writer.finish(repairedAt, maxDataAge, openResult)); |
| else |
| SSTableMultiWriter.abortOrDie(writer); |
| } |
| return finishedReaders; |
| } |
| |
| @Override |
| public Collection<SSTableReader> finish(boolean openResult) |
| { |
| if (currentWriter != null) |
| finishedWriters.add(currentWriter); |
| currentWriter = null; |
| for (SSTableMultiWriter writer : finishedWriters) |
| { |
| if (writer.getFilePointer() > 0) |
| finishedReaders.addAll(writer.finish(openResult)); |
| else |
| SSTableMultiWriter.abortOrDie(writer); |
| } |
| return finishedReaders; |
| } |
| |
| @Override |
| public Collection<SSTableReader> finished() |
| { |
| return finishedReaders; |
| } |
| |
| @Override |
| public SSTableMultiWriter setOpenResult(boolean openResult) |
| { |
| finishedWriters.forEach((w) -> w.setOpenResult(openResult)); |
| currentWriter.setOpenResult(openResult); |
| return this; |
| } |
| |
| public String getFilename() |
| { |
| return String.join("/", cfs.keyspace.getName(), cfs.getTableName()); |
| } |
| |
| @Override |
| public long getFilePointer() |
| { |
| return currentWriter.getFilePointer(); |
| } |
| |
| @Override |
| public UUID getCfId() |
| { |
| return currentWriter.getCfId(); |
| } |
| |
| @Override |
| public Throwable commit(Throwable accumulate) |
| { |
| if (currentWriter != null) |
| finishedWriters.add(currentWriter); |
| currentWriter = null; |
| for (SSTableMultiWriter writer : finishedWriters) |
| accumulate = writer.commit(accumulate); |
| return accumulate; |
| } |
| |
| @Override |
| public Throwable abort(Throwable accumulate) |
| { |
| if (currentWriter != null) |
| finishedWriters.add(currentWriter); |
| currentWriter = null; |
| for (SSTableMultiWriter finishedWriter : finishedWriters) |
| accumulate = finishedWriter.abort(accumulate); |
| |
| return accumulate; |
| } |
| |
| @Override |
| public void prepareToCommit() |
| { |
| if (currentWriter != null) |
| finishedWriters.add(currentWriter); |
| currentWriter = null; |
| finishedWriters.forEach(SSTableMultiWriter::prepareToCommit); |
| } |
| |
| @Override |
| public void close() |
| { |
| if (currentWriter != null) |
| finishedWriters.add(currentWriter); |
| currentWriter = null; |
| finishedWriters.forEach(SSTableMultiWriter::close); |
| } |
| } |