001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.activemq.store.kahadb.disk.journal; 018 019import java.io.File; 020import java.io.IOException; 021 022import org.apache.activemq.store.kahadb.disk.util.LinkedNode; 023import org.apache.activemq.store.kahadb.disk.util.SequenceSet; 024import org.apache.activemq.util.IOHelper; 025import org.apache.activemq.util.RecoverableRandomAccessFile; 026 027/** 028 * DataFile 029 */ 030public class DataFile extends LinkedNode<DataFile> implements Comparable<DataFile> { 031 032 public final static byte STANDARD_LOG_FILE = 0x0; 033 034 protected final File file; 035 protected final Integer dataFileId; 036 protected volatile int length; 037 protected int typeCode = STANDARD_LOG_FILE; 038 protected final SequenceSet corruptedBlocks = new SequenceSet(); 039 040 DataFile(File file, int number) { 041 this.file = file; 042 this.dataFileId = Integer.valueOf(number); 043 length = (int)(file.exists() ? file.length() : 0); 044 } 045 046 public File getFile() { 047 return file; 048 } 049 050 public Integer getDataFileId() { 051 return dataFileId; 052 } 053 054 public int getTypeCode() { 055 return typeCode; 056 } 057 058 public void setTypeCode(int typeCode) { 059 this.typeCode = typeCode; 060 } 061 062 public synchronized int getLength() { 063 return length; 064 } 065 066 public void setLength(int length) { 067 this.length = length; 068 } 069 070 public synchronized void incrementLength(int size) { 071 length += size; 072 } 073 074 @Override 075 public synchronized String toString() { 076 return file.getName() + " number = " + dataFileId + " , length = " + length; 077 } 078 079 public synchronized RecoverableRandomAccessFile openRandomAccessFile() throws IOException { 080 return new RecoverableRandomAccessFile(file.getCanonicalPath(), "rw"); 081 } 082 083 public synchronized void closeRandomAccessFile(RecoverableRandomAccessFile file) throws IOException { 084 file.close(); 085 } 086 087 public synchronized boolean delete() throws IOException { 088 return file.delete(); 089 } 090 091 public synchronized void move(File targetDirectory) throws IOException{ 092 IOHelper.moveFile(file, targetDirectory); 093 } 094 095 public SequenceSet getCorruptedBlocks() { 096 return corruptedBlocks; 097 } 098 099 @Override 100 public int compareTo(DataFile df) { 101 return dataFileId - df.dataFileId; 102 } 103 104 @Override 105 public boolean equals(Object o) { 106 boolean result = false; 107 if (o instanceof DataFile) { 108 result = compareTo((DataFile)o) == 0; 109 } 110 return result; 111 } 112 113 @Override 114 public int hashCode() { 115 return dataFileId; 116 } 117}