| /** |
| * Copyright The Apache Software Foundation |
| * |
| * 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.bookkeeper.bookie; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Journal stream position. |
| */ |
| public class LogMark { |
| long logFileId; |
| long logFileOffset; |
| |
| public static final LogMark MAX_VALUE = new LogMark(Long.MAX_VALUE, Long.MAX_VALUE); |
| |
| public LogMark() { |
| setLogMark(0, 0); |
| } |
| |
| public LogMark(LogMark other) { |
| setLogMark(other.getLogFileId(), other.getLogFileOffset()); |
| } |
| |
| public LogMark(long logFileId, long logFileOffset) { |
| setLogMark(logFileId, logFileOffset); |
| } |
| |
| public synchronized long getLogFileId() { |
| return logFileId; |
| } |
| |
| public synchronized long getLogFileOffset() { |
| return logFileOffset; |
| } |
| |
| public synchronized void readLogMark(ByteBuffer bb) { |
| logFileId = bb.getLong(); |
| logFileOffset = bb.getLong(); |
| } |
| |
| public synchronized void writeLogMark(ByteBuffer bb) { |
| bb.putLong(logFileId); |
| bb.putLong(logFileOffset); |
| } |
| |
| public synchronized void setLogMark(long logFileId, long logFileOffset) { |
| this.logFileId = logFileId; |
| this.logFileOffset = logFileOffset; |
| } |
| |
| public synchronized int compare(LogMark other) { |
| long ret = this.logFileId - other.getLogFileId(); |
| if (ret == 0) { |
| ret = this.logFileOffset - other.getLogFileOffset(); |
| } |
| return (ret < 0) ? -1 : ((ret > 0) ? 1 : 0); |
| } |
| |
| @Override |
| public synchronized String toString() { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append("LogMark: logFileId - ").append(logFileId) |
| .append(" , logFileOffset - ").append(logFileOffset); |
| |
| return sb.toString(); |
| } |
| } |