| /** |
| * 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.mledger.impl; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.ComparisonChain; |
| import io.netty.buffer.ByteBuf; |
| import io.netty.buffer.Unpooled; |
| import io.netty.util.Recycler; |
| import io.netty.util.Recycler.Handle; |
| import io.netty.util.ReferenceCounted; |
| import org.apache.bookkeeper.client.api.LedgerEntry; |
| import org.apache.bookkeeper.mledger.Entry; |
| import org.apache.bookkeeper.mledger.util.AbstractCASReferenceCounted; |
| |
| public final class EntryImpl extends AbstractCASReferenceCounted implements Entry, Comparable<EntryImpl>, |
| ReferenceCounted { |
| |
| private static final Recycler<EntryImpl> RECYCLER = new Recycler<EntryImpl>() { |
| @Override |
| protected EntryImpl newObject(Handle<EntryImpl> handle) { |
| return new EntryImpl(handle); |
| } |
| }; |
| |
| private final Handle<EntryImpl> recyclerHandle; |
| private long timestamp; |
| private long ledgerId; |
| private long entryId; |
| ByteBuf data; |
| |
| public static EntryImpl create(LedgerEntry ledgerEntry) { |
| EntryImpl entry = RECYCLER.get(); |
| entry.timestamp = System.nanoTime(); |
| entry.ledgerId = ledgerEntry.getLedgerId(); |
| entry.entryId = ledgerEntry.getEntryId(); |
| entry.data = ledgerEntry.getEntryBuffer(); |
| entry.data.retain(); |
| entry.setRefCnt(1); |
| return entry; |
| } |
| |
| @VisibleForTesting |
| public static EntryImpl create(long ledgerId, long entryId, byte[] data) { |
| EntryImpl entry = RECYCLER.get(); |
| entry.timestamp = System.nanoTime(); |
| entry.ledgerId = ledgerId; |
| entry.entryId = entryId; |
| entry.data = Unpooled.wrappedBuffer(data); |
| entry.setRefCnt(1); |
| return entry; |
| } |
| |
| public static EntryImpl create(long ledgerId, long entryId, ByteBuf data) { |
| EntryImpl entry = RECYCLER.get(); |
| entry.timestamp = System.nanoTime(); |
| entry.ledgerId = ledgerId; |
| entry.entryId = entryId; |
| entry.data = data; |
| entry.data.retain(); |
| entry.setRefCnt(1); |
| return entry; |
| } |
| |
| public static EntryImpl create(PositionImpl position, ByteBuf data) { |
| EntryImpl entry = RECYCLER.get(); |
| entry.timestamp = System.nanoTime(); |
| entry.ledgerId = position.getLedgerId(); |
| entry.entryId = position.getEntryId(); |
| entry.data = data; |
| entry.data.retain(); |
| entry.setRefCnt(1); |
| return entry; |
| } |
| |
| public static EntryImpl create(EntryImpl other) { |
| EntryImpl entry = RECYCLER.get(); |
| entry.timestamp = System.nanoTime(); |
| entry.ledgerId = other.ledgerId; |
| entry.entryId = other.entryId; |
| entry.data = other.data.retainedDuplicate(); |
| entry.setRefCnt(1); |
| return entry; |
| } |
| |
| private EntryImpl(Recycler.Handle<EntryImpl> recyclerHandle) { |
| this.recyclerHandle = recyclerHandle; |
| } |
| |
| public long getTimestamp() { |
| return timestamp; |
| } |
| |
| @Override |
| public ByteBuf getDataBuffer() { |
| return data; |
| } |
| |
| @Override |
| public byte[] getData() { |
| byte[] array = new byte[data.readableBytes()]; |
| data.getBytes(data.readerIndex(), array); |
| return array; |
| } |
| |
| // Only for test |
| @Override |
| public byte[] getDataAndRelease() { |
| byte[] array = getData(); |
| release(); |
| return array; |
| } |
| |
| @Override |
| public int getLength() { |
| return data.readableBytes(); |
| } |
| |
| @Override |
| public PositionImpl getPosition() { |
| return new PositionImpl(ledgerId, entryId); |
| } |
| |
| @Override |
| public long getLedgerId() { |
| return ledgerId; |
| } |
| |
| @Override |
| public long getEntryId() { |
| return entryId; |
| } |
| |
| @Override |
| public int compareTo(EntryImpl other) { |
| return ComparisonChain.start().compare(ledgerId, other.ledgerId).compare(entryId, other.entryId).result(); |
| } |
| |
| @Override |
| public ReferenceCounted touch(Object hint) { |
| return this; |
| } |
| |
| @Override |
| protected void deallocate() { |
| // This method is called whenever the ref-count of the EntryImpl reaches 0, so that now we can recycle it |
| data.release(); |
| data = null; |
| timestamp = -1; |
| ledgerId = -1; |
| entryId = -1; |
| recyclerHandle.recycle(this); |
| } |
| |
| } |