| /* |
| * 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.db.commitlog; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.io.FSWriteError; |
| |
| /** |
| * Writes to the backing commit log file only on sync, allowing transformations of the mutations, |
| * such as compression or encryption, before writing out to disk. |
| */ |
| public abstract class FileDirectSegment extends CommitLogSegment |
| { |
| volatile long lastWrittenPos = 0; |
| private final Runnable onClose; |
| |
| FileDirectSegment(CommitLog commitLog, AbstractCommitLogSegmentManager manager, Runnable onClose) |
| { |
| super(commitLog, manager); |
| this.onClose = onClose; |
| } |
| |
| @Override |
| void writeLogHeader() |
| { |
| super.writeLogHeader(); |
| try |
| { |
| channel.write((ByteBuffer) buffer.duplicate().flip()); |
| manager.addSize(lastWrittenPos = buffer.position()); |
| } |
| catch (IOException e) |
| { |
| throw new FSWriteError(e, getPath()); |
| } |
| } |
| |
| @Override |
| protected void internalClose() |
| { |
| try |
| { |
| manager.getBufferPool().releaseBuffer(buffer); |
| super.internalClose(); |
| } |
| finally |
| { |
| onClose.run(); |
| } |
| } |
| } |