| /* |
| * 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; |
| |
| import java.util.Collection; |
| |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.db.SerializationHeader; |
| import org.apache.cassandra.db.compaction.OperationType; |
| import org.apache.cassandra.db.lifecycle.LifecycleTransaction; |
| import org.apache.cassandra.db.rows.UnfilteredRowIterator; |
| import org.apache.cassandra.io.sstable.format.SSTableReader; |
| import org.apache.cassandra.io.sstable.metadata.MetadataCollector; |
| import org.apache.cassandra.utils.concurrent.Transactional; |
| |
| /** |
| * A wrapper for SSTableWriter and LifecycleTransaction to be used when |
| * the writer is the only participant in the transaction and therefore |
| * it can safely own the transaction. |
| */ |
| public class SSTableTxnWriter extends Transactional.AbstractTransactional implements Transactional |
| { |
| private final LifecycleTransaction txn; |
| private final SSTableMultiWriter writer; |
| |
| public SSTableTxnWriter(LifecycleTransaction txn, SSTableMultiWriter writer) |
| { |
| this.txn = txn; |
| this.writer = writer; |
| } |
| |
| public boolean append(UnfilteredRowIterator iterator) |
| { |
| return writer.append(iterator); |
| } |
| |
| public String getFilename() |
| { |
| return writer.getFilename(); |
| } |
| |
| public long getFilePointer() |
| { |
| return writer.getFilePointer(); |
| } |
| |
| protected Throwable doCommit(Throwable accumulate) |
| { |
| return writer.commit(txn.commit(accumulate)); |
| } |
| |
| protected Throwable doAbort(Throwable accumulate) |
| { |
| return txn.abort(writer.abort(accumulate)); |
| } |
| |
| protected void doPrepare() |
| { |
| writer.prepareToCommit(); |
| txn.prepareToCommit(); |
| } |
| |
| @Override |
| protected Throwable doPostCleanup(Throwable accumulate) |
| { |
| txn.close(); |
| writer.close(); |
| return super.doPostCleanup(accumulate); |
| } |
| |
| public Collection<SSTableReader> finish(boolean openResult) |
| { |
| writer.setOpenResult(openResult); |
| finish(); |
| return writer.finished(); |
| } |
| |
| @SuppressWarnings("resource") // log and writer closed during postCleanup |
| public static SSTableTxnWriter create(ColumnFamilyStore cfs, Descriptor descriptor, long keyCount, long repairedAt, int sstableLevel, SerializationHeader header) |
| { |
| LifecycleTransaction txn = LifecycleTransaction.offline(OperationType.WRITE); |
| SSTableMultiWriter writer = cfs.createSSTableMultiWriter(descriptor, keyCount, repairedAt, sstableLevel, header, txn); |
| return new SSTableTxnWriter(txn, writer); |
| } |
| |
| @SuppressWarnings("resource") // log and writer closed during postCleanup |
| public static SSTableTxnWriter create(CFMetaData cfm, Descriptor descriptor, long keyCount, long repairedAt, int sstableLevel, SerializationHeader header) |
| { |
| // if the column family store does not exist, we create a new default SSTableMultiWriter to use: |
| LifecycleTransaction txn = LifecycleTransaction.offline(OperationType.WRITE); |
| MetadataCollector collector = new MetadataCollector(cfm.comparator).sstableLevel(sstableLevel); |
| SSTableMultiWriter writer = SimpleSSTableMultiWriter.create(descriptor, keyCount, repairedAt, cfm, collector, header, txn); |
| return new SSTableTxnWriter(txn, writer); |
| } |
| |
| public static SSTableTxnWriter create(ColumnFamilyStore cfs, String filename, long keyCount, long repairedAt, int sstableLevel, SerializationHeader header) |
| { |
| Descriptor desc = Descriptor.fromFilename(filename); |
| return create(cfs, desc, keyCount, repairedAt, sstableLevel, header); |
| } |
| |
| public static SSTableTxnWriter create(ColumnFamilyStore cfs, String filename, long keyCount, long repairedAt, SerializationHeader header) |
| { |
| return create(cfs, filename, keyCount, repairedAt, 0, header); |
| } |
| } |