| /* |
| * 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.persistent; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static org.apache.pulsar.broker.service.AbstractBaseDispatcher.checkAndApplyReachedEndOfTopicOrTopicMigration; |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.bookkeeper.mledger.AsyncCallbacks.MarkDeleteCallback; |
| import org.apache.bookkeeper.mledger.ManagedCursor; |
| import org.apache.bookkeeper.mledger.ManagedLedgerException; |
| import org.apache.bookkeeper.mledger.Position; |
| import org.apache.pulsar.common.api.proto.CommandAck.AckType; |
| import org.apache.pulsar.compaction.CompactedTopic; |
| import org.apache.pulsar.compaction.Compactor; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class PulsarCompactorSubscription extends PersistentSubscription { |
| private final CompactedTopic compactedTopic; |
| |
| public PulsarCompactorSubscription(PersistentTopic topic, CompactedTopic compactedTopic, |
| String subscriptionName, ManagedCursor cursor) { |
| super(topic, subscriptionName, cursor, false); |
| checkArgument(subscriptionName.equals(Compactor.COMPACTION_SUBSCRIPTION)); |
| this.compactedTopic = compactedTopic; |
| |
| // Avoid compactor cursor to cause entries to be cached |
| this.cursor.setAlwaysInactive(); |
| |
| Map<String, Long> properties = cursor.getProperties(); |
| if (properties.containsKey(Compactor.COMPACTED_TOPIC_LEDGER_PROPERTY)) { |
| long compactedLedgerId = properties.get(Compactor.COMPACTED_TOPIC_LEDGER_PROPERTY); |
| compactedTopic.newCompactedLedger(cursor.getMarkDeletedPosition(), compactedLedgerId) |
| .thenAccept(previousContext -> { |
| if (previousContext != null) { |
| compactedTopic.deleteCompactedLedger(previousContext.getLedger().getId()); |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void acknowledgeMessage(List<Position> positions, AckType ackType, Map<String, Long> properties) { |
| checkArgument(ackType == AckType.Cumulative); |
| checkArgument(positions.size() == 1); |
| checkArgument(properties.containsKey(Compactor.COMPACTED_TOPIC_LEDGER_PROPERTY)); |
| long compactedLedgerId = properties.get(Compactor.COMPACTED_TOPIC_LEDGER_PROPERTY); |
| |
| Position position = positions.get(0); |
| |
| if (log.isDebugEnabled()) { |
| log.debug("[{}][{}] Cumulative ack on compactor subscription {}", topicName, subName, position); |
| } |
| |
| // The newCompactedLedger must be called at the first step because we need to ensure the reader can read |
| // complete data from compacted Ledger, otherwise, if the original ledger been deleted the reader cursor |
| // might move to a subsequent original ledger if `compactionHorizon` have not updated, this will lead to |
| // the reader skips compacted data at that time, after the `compactionHorizon` updated, the reader able |
| // to read the complete compacted data again. |
| // And we can only delete the previous ledger after the mark delete succeed, otherwise we will loss the |
| // compacted data if mark delete failed. |
| compactedTopic.newCompactedLedger(position, compactedLedgerId).thenAccept(previousContext -> { |
| cursor.asyncMarkDelete(position, properties, new MarkDeleteCallback() { |
| @Override |
| public void markDeleteComplete(Object ctx) { |
| if (log.isDebugEnabled()) { |
| log.debug("[{}][{}] Mark deleted messages until position on compactor subscription {}", |
| topicName, subName, position); |
| } |
| if (previousContext != null) { |
| compactedTopic.deleteCompactedLedger(previousContext.getLedger().getId()); |
| } |
| } |
| |
| @Override |
| public void markDeleteFailed(ManagedLedgerException exception, Object ctx) { |
| // TODO: cut consumer connection on markDeleteFailed |
| if (log.isDebugEnabled()) { |
| log.debug("[{}][{}] Failed to mark delete for position on compactor subscription {}", |
| topicName, subName, ctx, exception); |
| } |
| } |
| }, null); |
| }); |
| |
| if (topic.getManagedLedger().isTerminated() && cursor.getNumberOfEntriesInBacklog(false) == 0) { |
| // Notify all consumer that the end of topic was reached |
| checkAndApplyReachedEndOfTopicOrTopicMigration(topic, dispatcher.getConsumers()); |
| } |
| } |
| |
| private static final Logger log = LoggerFactory.getLogger(PulsarCompactorSubscription.class); |
| } |