| /* |
| * 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.iotdb.commons.consensus.index.impl; |
| |
| import org.apache.iotdb.commons.consensus.index.ProgressIndex; |
| import org.apache.iotdb.commons.consensus.index.ProgressIndexType; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import javax.annotation.Nonnull; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| public class SimpleProgressIndex extends ProgressIndex { |
| |
| private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
| |
| private final int rebootTimes; |
| private final long memtableFlushOrderId; |
| |
| public SimpleProgressIndex(int rebootTimes, long memtableFlushOrderId) { |
| this.rebootTimes = rebootTimes; |
| this.memtableFlushOrderId = memtableFlushOrderId; |
| } |
| |
| @Override |
| public void serialize(ByteBuffer byteBuffer) { |
| lock.readLock().lock(); |
| try { |
| ProgressIndexType.SIMPLE_PROGRESS_INDEX.serialize(byteBuffer); |
| |
| ReadWriteIOUtils.write(rebootTimes, byteBuffer); |
| ReadWriteIOUtils.write(memtableFlushOrderId, byteBuffer); |
| } finally { |
| lock.readLock().unlock(); |
| } |
| } |
| |
| @Override |
| public void serialize(OutputStream stream) throws IOException { |
| lock.readLock().lock(); |
| try { |
| ProgressIndexType.SIMPLE_PROGRESS_INDEX.serialize(stream); |
| |
| ReadWriteIOUtils.write(rebootTimes, stream); |
| ReadWriteIOUtils.write(memtableFlushOrderId, stream); |
| } finally { |
| lock.readLock().unlock(); |
| } |
| } |
| |
| @Override |
| public boolean isAfter(@Nonnull ProgressIndex progressIndex) { |
| lock.readLock().lock(); |
| try { |
| if (progressIndex instanceof MinimumProgressIndex) { |
| return true; |
| } |
| |
| if (progressIndex instanceof HybridProgressIndex) { |
| return ((HybridProgressIndex) progressIndex).isGivenProgressIndexAfterSelf(this); |
| } |
| |
| if (!(progressIndex instanceof SimpleProgressIndex)) { |
| return false; |
| } |
| |
| final SimpleProgressIndex thisSimpleProgressIndex = this; |
| final SimpleProgressIndex thatSimpleProgressIndex = (SimpleProgressIndex) progressIndex; |
| if (thisSimpleProgressIndex.rebootTimes > thatSimpleProgressIndex.rebootTimes) { |
| return true; |
| } |
| if (thisSimpleProgressIndex.rebootTimes < thatSimpleProgressIndex.rebootTimes) { |
| return false; |
| } |
| // thisSimpleProgressIndex.rebootTimes == thatSimpleProgressIndex.rebootTimes |
| return thisSimpleProgressIndex.memtableFlushOrderId |
| > thatSimpleProgressIndex.memtableFlushOrderId; |
| } finally { |
| lock.readLock().unlock(); |
| } |
| } |
| |
| @Override |
| public boolean equals(ProgressIndex progressIndex) { |
| lock.readLock().lock(); |
| try { |
| if (!(progressIndex instanceof SimpleProgressIndex)) { |
| return false; |
| } |
| |
| final SimpleProgressIndex thisSimpleProgressIndex = this; |
| final SimpleProgressIndex thatSimpleProgressIndex = (SimpleProgressIndex) progressIndex; |
| return thisSimpleProgressIndex.rebootTimes == thatSimpleProgressIndex.rebootTimes |
| && thisSimpleProgressIndex.memtableFlushOrderId |
| == thatSimpleProgressIndex.memtableFlushOrderId; |
| } finally { |
| lock.readLock().unlock(); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null) { |
| return false; |
| } |
| if (this == obj) { |
| return true; |
| } |
| if (!(obj instanceof SimpleProgressIndex)) { |
| return false; |
| } |
| return this.equals((SimpleProgressIndex) obj); |
| } |
| |
| @Override |
| public int hashCode() { |
| return 0; |
| } |
| |
| @Override |
| public ProgressIndex updateToMinimumEqualOrIsAfterProgressIndex(ProgressIndex progressIndex) { |
| lock.writeLock().lock(); |
| try { |
| if (!(progressIndex instanceof SimpleProgressIndex)) { |
| return ProgressIndex.blendProgressIndex(this, progressIndex); |
| } |
| |
| final SimpleProgressIndex thisSimpleProgressIndex = this; |
| final SimpleProgressIndex thatSimpleProgressIndex = (SimpleProgressIndex) progressIndex; |
| if (thisSimpleProgressIndex.rebootTimes > thatSimpleProgressIndex.rebootTimes) { |
| return this; |
| } |
| if (thisSimpleProgressIndex.rebootTimes < thatSimpleProgressIndex.rebootTimes) { |
| return progressIndex; |
| } |
| // thisSimpleProgressIndex.rebootTimes == thatSimpleProgressIndex.rebootTimes |
| if (thisSimpleProgressIndex.memtableFlushOrderId |
| > thatSimpleProgressIndex.memtableFlushOrderId) { |
| return this; |
| } |
| if (thisSimpleProgressIndex.memtableFlushOrderId |
| < thatSimpleProgressIndex.memtableFlushOrderId) { |
| return progressIndex; |
| } |
| // thisSimpleProgressIndex.memtableFlushOrderId == |
| // thatSimpleProgressIndex.memtableFlushOrderId |
| return this; |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| } |
| |
| public ProgressIndexType getType() { |
| return ProgressIndexType.SIMPLE_PROGRESS_INDEX; |
| } |
| |
| @Override |
| public TotalOrderSumTuple getTotalOrderSumTuple() { |
| return new TotalOrderSumTuple(memtableFlushOrderId, (long) rebootTimes); |
| } |
| |
| public static SimpleProgressIndex deserializeFrom(ByteBuffer byteBuffer) { |
| final int rebootTimes = ReadWriteIOUtils.readInt(byteBuffer); |
| final long memtableFlushOrderId = ReadWriteIOUtils.readLong(byteBuffer); |
| return new SimpleProgressIndex(rebootTimes, memtableFlushOrderId); |
| } |
| |
| public static SimpleProgressIndex deserializeFrom(InputStream stream) throws IOException { |
| final int rebootTimes = ReadWriteIOUtils.readInt(stream); |
| final long memtableFlushOrderId = ReadWriteIOUtils.readLong(stream); |
| return new SimpleProgressIndex(rebootTimes, memtableFlushOrderId); |
| } |
| |
| @Override |
| public String toString() { |
| return "SimpleProgressIndex{" |
| + "rebootTimes=" |
| + rebootTimes |
| + ", memtableFlushOrderId=" |
| + memtableFlushOrderId |
| + '}'; |
| } |
| } |