healchow commented on code in PR #5625: URL: https://github.com/apache/inlong/pull/5625#discussion_r953436479
########## inlong-sdk/sort-sdk/src/main/java/org/apache/inlong/sdk/sort/fetcher/pulsar/PulsarMultiTopicsFetcher.java: ########## @@ -0,0 +1,434 @@ +/* + * 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.inlong.sdk.sort.fetcher.pulsar; + +import com.google.common.base.Preconditions; +import org.apache.commons.collections.CollectionUtils; +import org.apache.commons.lang3.StringUtils; +import org.apache.inlong.sdk.sort.api.ClientContext; +import org.apache.inlong.sdk.sort.api.Deserializer; +import org.apache.inlong.sdk.sort.api.Interceptor; +import org.apache.inlong.sdk.sort.api.MultiTopicsFetcher; +import org.apache.inlong.sdk.sort.api.Seeker; +import org.apache.inlong.sdk.sort.api.SeekerFactory; +import org.apache.inlong.sdk.sort.api.SortClientConfig; +import org.apache.inlong.sdk.sort.entity.InLongMessage; +import org.apache.inlong.sdk.sort.entity.InLongTopic; +import org.apache.inlong.sdk.sort.entity.MessageRecord; +import org.apache.pulsar.client.api.Consumer; +import org.apache.pulsar.client.api.Message; +import org.apache.pulsar.client.api.MessageId; +import org.apache.pulsar.client.api.Messages; +import org.apache.pulsar.client.api.PulsarClient; +import org.apache.pulsar.client.api.PulsarClientException; +import org.apache.pulsar.client.api.Schema; +import org.apache.pulsar.client.api.SubscriptionInitialPosition; +import org.apache.pulsar.client.api.SubscriptionType; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.Base64; +import java.util.Collection; +import java.util.LinkedList; +import java.util.List; +import java.util.Objects; +import java.util.concurrent.TimeUnit; +import java.util.stream.Collectors; + +/** + * MultiTopicsFetcher for pulsar. + */ +public class PulsarMultiTopicsFetcher extends MultiTopicsFetcher { + private static final Logger LOGGER = LoggerFactory.getLogger(PulsarMultiTopicsFetcher.class); + private PulsarConsumer currentConsumer; + private List<PulsarConsumer> toBeRemovedConsumers = new LinkedList<>(); + private PulsarClient pulsarClient; + + public PulsarMultiTopicsFetcher( + List<InLongTopic> topics, + ClientContext context, + Interceptor interceptor, + Deserializer deserializer, + PulsarClient pulsarClient) { + super(topics, context, interceptor, deserializer); + this.pulsarClient = Preconditions.checkNotNull(pulsarClient); + } + + @Override + public boolean init() { + Consumer<byte[]> newConsumer = createConsumer(onlineTopics.values()); + if (Objects.isNull(newConsumer)) { + LOGGER.error("create new consumer is null"); + return false; + } + this.currentConsumer = new PulsarConsumer(newConsumer); + InLongTopic firstTopic = onlineTopics.values().stream().findFirst().get(); + this.seeker = SeekerFactory.createPulsarSeeker(newConsumer, firstTopic); + String threadName = String.format("sort_sdk_pulsar_multi_topic_fetch_thread_%d", this.hashCode()); + this.fetchThread = new Thread(new PulsarMultiTopicsFetcher.Fetcher(), threadName); + this.fetchThread.start(); + this.executor.scheduleWithFixedDelay(this::clearRemovedConsumerList, + context.getConfig().getCleanOldConsumerIntervalSec(), + context.getConfig().getCleanOldConsumerIntervalSec(), + TimeUnit.SECONDS); + return true; + } + + private void clearRemovedConsumerList() { + long cur = System.currentTimeMillis(); + List<PulsarConsumer> newList = new LinkedList<>(); + toBeRemovedConsumers.forEach(consumer -> { + long diff = cur - consumer.getStopTime(); + if (diff > context.getConfig().getCleanOldConsumerIntervalSec() * 1000L || consumer.isEmpty()) { + try { + consumer.close(); + } catch (PulsarClientException e) { + LOGGER.warn("got exception in close old consumer", e); + } + return; + } + newList.add(consumer); + }); + LOGGER.info("after clear old consumers, the old size is {}, current size is {}", + toBeRemovedConsumers.size(), newList.size()); + this.toBeRemovedConsumers = newList; + } + + private boolean updateAll(Collection<InLongTopic> newTopics) { + if (CollectionUtils.isEmpty(newTopics)) { + LOGGER.error("new topics is empty or null"); + return false; + } + // stop old; + this.setStopConsume(true); + this.currentConsumer.pause(); + // create new; + Consumer<byte[]> newConsumer = createConsumer(newTopics); + if (Objects.isNull(newConsumer)) { + currentConsumer.resume(); + this.setStopConsume(false); + LOGGER.error("create new consumer failed, use the old one"); + return false; + } + PulsarConsumer newConsumerWrapper = new PulsarConsumer(newConsumer); + InLongTopic firstTopic = newTopics.stream().findFirst().get(); + final Seeker newSeeker = SeekerFactory.createPulsarSeeker(newConsumer, firstTopic); + // save + currentConsumer.setStopTime(System.currentTimeMillis()); + toBeRemovedConsumers.add(currentConsumer); + // replace + this.currentConsumer = newConsumerWrapper; + this.seeker = newSeeker; + this.interceptor.configure(firstTopic); + this.onlineTopics = newTopics.stream().collect(Collectors.toMap(InLongTopic::getTopic, t -> t)); + // resume + this.setStopConsume(false); + return true; + } + + private Consumer<byte[]> createConsumer(Collection<InLongTopic> newTopics) { + if (CollectionUtils.isEmpty(newTopics)) { + LOGGER.error("new topic is empty or null"); + return null; + } + try { + SubscriptionInitialPosition position = SubscriptionInitialPosition.Latest; + SortClientConfig.ConsumeStrategy offsetResetStrategy = context.getConfig().getOffsetResetStrategy(); + if (offsetResetStrategy == SortClientConfig.ConsumeStrategy.earliest + || offsetResetStrategy == SortClientConfig.ConsumeStrategy.earliest_absolutely) { + LOGGER.info("the subscription initial position is earliest!"); + position = SubscriptionInitialPosition.Earliest; + } + + List<String> topicNames = newTopics.stream() + .map(InLongTopic::getTopic) + .collect(Collectors.toList()); + Consumer<byte[]> consumer = pulsarClient.newConsumer(Schema.BYTES) + .topics(topicNames) + .subscriptionName(context.getConfig().getSortTaskId()) + .subscriptionType(SubscriptionType.Shared) + .startMessageIdInclusive() + .subscriptionInitialPosition(position) + .ackTimeout(context.getConfig().getAckTimeoutSec(), TimeUnit.SECONDS) + .receiverQueueSize(context.getConfig().getPulsarReceiveQueueSize()) + .subscribe(); + LOGGER.info("create consumer for topics {}", topicNames); + return consumer; + } catch (Exception e) { + LOGGER.error(e.getMessage(), e); Review Comment: Please change it. -- This is an automated message from the Apache Git Service. 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