| /** |
| * 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.nonpersistent; |
| |
| import java.util.List; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.bookkeeper.mledger.Entry; |
| import org.apache.pulsar.broker.service.AbstractDispatcherSingleActiveConsumer; |
| import org.apache.pulsar.broker.service.Consumer; |
| import org.apache.pulsar.broker.service.EntryBatchSizes; |
| import org.apache.pulsar.broker.service.RedeliveryTracker; |
| import org.apache.pulsar.broker.service.RedeliveryTrackerDisabled; |
| import org.apache.pulsar.broker.service.SendMessageInfo; |
| import org.apache.pulsar.broker.service.Subscription; |
| import org.apache.pulsar.common.api.proto.CommandSubscribe.SubType; |
| import org.apache.pulsar.common.protocol.Commands; |
| import org.apache.pulsar.common.stats.Rate; |
| |
| @Slf4j |
| public final class NonPersistentDispatcherSingleActiveConsumer extends AbstractDispatcherSingleActiveConsumer |
| implements NonPersistentDispatcher { |
| |
| private final NonPersistentTopic topic; |
| private final Rate msgDrop; |
| private final Subscription subscription; |
| private final RedeliveryTracker redeliveryTracker; |
| |
| public NonPersistentDispatcherSingleActiveConsumer(SubType subscriptionType, int partitionIndex, |
| NonPersistentTopic topic, Subscription subscription) { |
| super(subscriptionType, partitionIndex, topic.getName(), subscription, |
| topic.getBrokerService().pulsar().getConfiguration(), null); |
| this.topic = topic; |
| this.subscription = subscription; |
| this.msgDrop = new Rate(); |
| this.redeliveryTracker = RedeliveryTrackerDisabled.REDELIVERY_TRACKER_DISABLED; |
| } |
| |
| @Override |
| public void sendMessages(List<Entry> entries) { |
| Consumer currentConsumer = ACTIVE_CONSUMER_UPDATER.get(this); |
| if (currentConsumer != null && currentConsumer.getAvailablePermits() > 0 && currentConsumer.isWritable()) { |
| SendMessageInfo sendMessageInfo = SendMessageInfo.getThreadLocal(); |
| EntryBatchSizes batchSizes = EntryBatchSizes.get(entries.size()); |
| filterEntriesForConsumer(entries, batchSizes, sendMessageInfo, null, null, false); |
| currentConsumer.sendMessages(entries, batchSizes, null, sendMessageInfo.getTotalMessages(), |
| sendMessageInfo.getTotalBytes(), sendMessageInfo.getTotalChunkedMessages(), getRedeliveryTracker()); |
| } else { |
| entries.forEach(entry -> { |
| int totalMsgs = Commands.getNumberOfMessagesInBatch(entry.getDataBuffer(), subscription.toString(), -1); |
| if (totalMsgs > 0) { |
| msgDrop.recordEvent(totalMsgs); |
| } |
| entry.release(); |
| }); |
| } |
| } |
| |
| @Override |
| protected boolean isConsumersExceededOnSubscription() { |
| return isConsumersExceededOnSubscription(topic, consumers.size()); |
| } |
| |
| @Override |
| public Rate getMessageDropRate() { |
| return msgDrop; |
| } |
| |
| @Override |
| public boolean hasPermits() { |
| return ACTIVE_CONSUMER_UPDATER.get(this) != null && ACTIVE_CONSUMER_UPDATER.get(this).getAvailablePermits() > 0; |
| } |
| |
| @Override |
| public void consumerFlow(Consumer consumer, int additionalNumberOfMessages) { |
| // No-op |
| } |
| |
| @Override |
| public RedeliveryTracker getRedeliveryTracker() { |
| return redeliveryTracker; |
| } |
| |
| @Override |
| protected void scheduleReadOnActiveConsumer() { |
| // No-op |
| } |
| |
| @Override |
| protected void readMoreEntries(Consumer consumer) { |
| // No-op |
| } |
| |
| @Override |
| protected void cancelPendingRead() { |
| // No-op |
| } |
| |
| @Override |
| protected void reScheduleRead() { |
| // No-op |
| } |
| } |