| /* |
| * 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.pulsar.broker.service; |
| |
| import java.util.List; |
| import org.apache.bookkeeper.mledger.Position; |
| import org.apache.bookkeeper.mledger.impl.PositionImpl; |
| import org.apache.pulsar.common.util.collections.ConcurrentLongLongPairHashMap; |
| import org.apache.pulsar.common.util.collections.ConcurrentLongLongPairHashMap.LongPair; |
| |
| public class InMemoryRedeliveryTracker implements RedeliveryTracker { |
| |
| private ConcurrentLongLongPairHashMap trackerCache = ConcurrentLongLongPairHashMap.newBuilder() |
| .concurrencyLevel(1) |
| .expectedItems(256) |
| .autoShrink(true) |
| .build(); |
| |
| @Override |
| public int incrementAndGetRedeliveryCount(Position position) { |
| PositionImpl positionImpl = (PositionImpl) position; |
| LongPair count = trackerCache.get(positionImpl.getLedgerId(), positionImpl.getEntryId()); |
| int newCount = (int) (count != null ? count.first + 1 : 1); |
| trackerCache.put(positionImpl.getLedgerId(), positionImpl.getEntryId(), newCount, 0L); |
| return newCount; |
| } |
| |
| @Override |
| public int getRedeliveryCount(long ledgerId, long entryId) { |
| LongPair count = trackerCache.get(ledgerId, entryId); |
| return (int) (count != null ? count.first : 0); |
| } |
| |
| @Override |
| public void remove(Position position) { |
| PositionImpl positionImpl = (PositionImpl) position; |
| trackerCache.remove(positionImpl.getLedgerId(), positionImpl.getEntryId()); |
| } |
| |
| @Override |
| public void removeBatch(List<Position> positions) { |
| if (positions != null) { |
| positions.forEach(this::remove); |
| } |
| } |
| |
| @Override |
| public void clear() { |
| trackerCache.clear(); |
| } |
| } |