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Posted to commits@pinot.apache.org by GitBox <gi...@apache.org> on 2022/03/07 06:31:03 UTC
[GitHub] [pinot] 0902horn commented on a change in pull request #8274: Rocketmq integration
0902horn commented on a change in pull request #8274:
URL: https://github.com/apache/pinot/pull/8274#discussion_r820412903
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File path: pinot-plugins/pinot-stream-ingestion/pinot-rocketmq/src/main/java/org/apache/pinot/plugin/stream/rocketmq/RocketMQStreamLevelConsumer.java
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@@ -0,0 +1,155 @@
+/**
+ * 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.pinot.plugin.stream.rocketmq;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import org.apache.pinot.spi.data.readers.GenericRow;
+import org.apache.pinot.spi.stream.StreamConfig;
+import org.apache.pinot.spi.stream.StreamDecoderProvider;
+import org.apache.pinot.spi.stream.StreamLevelConsumer;
+import org.apache.pinot.spi.stream.StreamMessageDecoder;
+import org.apache.rocketmq.client.consumer.DefaultLitePullConsumer;
+import org.apache.rocketmq.client.exception.MQClientException;
+import org.apache.rocketmq.common.message.MessageExt;
+import org.apache.rocketmq.common.message.MessageQueue;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * A {@link StreamLevelConsumer} implementation for the RocketMQ stream
+ */
+public class RocketMQStreamLevelConsumer implements StreamLevelConsumer {
+
+ private StreamMessageDecoder _messageDecoder;
+ private Logger _instanceLogger;
+
+ private StreamConfig _streamConfig;
+ private RocketMQConfig _rocketmqStreamLevelStreamConfig;
+
+ private DefaultLitePullConsumer _consumer;
+ private List<MessageExt> _consumerRecords;
+ private Iterator<MessageExt> _rocketmqIterator;
+ private Map<MessageQueue, Long> _consumerOffsets = new HashMap<>(); // tracking current consumed records offsets.
+
+ private long _lastLogTime = 0;
+ private long _lastCount = 0;
+ private long _currentCount = 0L;
+
+ public RocketMQStreamLevelConsumer(String clientId, String tableName, StreamConfig streamConfig,
+ Set<String> sourceFields, String groupId) {
+ _streamConfig = streamConfig;
+ _rocketmqStreamLevelStreamConfig = new RocketMQConfig(streamConfig, groupId);
+
+ _messageDecoder = StreamDecoderProvider.create(streamConfig, sourceFields);
+
+ _instanceLogger =
+ LoggerFactory.getLogger(RocketMQConfig.class.getName() + "_" + tableName + "_" + streamConfig.getTopicName());
+ _instanceLogger.info("RocketMQStreamLevelConsumer: streamConfig : {}", _streamConfig);
+ }
+
+ @Override
+ public void start()
+ throws Exception {
+ _consumer = RocketMQStreamLevelConsumerManager.acquireRocketMQConsumerForConfig(_rocketmqStreamLevelStreamConfig);
+ }
+
+ private void updateRocketMQIterator() {
+ _consumerRecords = _consumer.poll(_streamConfig.getFetchTimeoutMillis());
+ _rocketmqIterator = _consumerRecords.iterator();
+ }
+
+ private void resetOffsets() {
+ for (MessageQueue queue : _consumerOffsets.keySet()) {
+ long offsetToSeek = _consumerOffsets.get(queue);
+ try {
+ _consumer.seek(queue, offsetToSeek);
+ } catch (MQClientException e) {
+ _instanceLogger.warn("Caught exception while seek offset", e);
+ }
+ }
+ }
+
+ @Override
+ public GenericRow next(GenericRow destination) {
+ if (_rocketmqIterator == null || !_rocketmqIterator.hasNext()) {
+ updateRocketMQIterator();
+ }
+ if (_rocketmqIterator.hasNext()) {
+ try {
+ final MessageExt record = _rocketmqIterator.next();
+ updateOffsets(new MessageQueue(record.getTopic(), record.getBrokerName(), record.getQueueId()),
+ record.getQueueOffset());
+ destination = _messageDecoder.decode(record.getBody(), destination);
+
+ _currentCount++;
+
+ final long now = System.currentTimeMillis();
+ // Log every minute or 100k events
+ if (now - _lastLogTime > 60000 || _currentCount - _lastCount >= 100000) {
+ if (_lastCount == 0) {
+ _instanceLogger
+ .info("Consumed {} events from rocketmq stream {}", _currentCount, _streamConfig.getTopicName());
+ } else {
+ _instanceLogger.info("Consumed {} events from rocketmq stream {} (rate:{}/s)", _currentCount - _lastCount,
+ _streamConfig.getTopicName(), (float) (_currentCount - _lastCount) * 1000 / (now - _lastLogTime));
+ }
+ _lastCount = _currentCount;
+ _lastLogTime = now;
+ }
+ return destination;
+ } catch (Exception e) {
+ _instanceLogger.warn("Caught exception while consuming events", e);
+ throw e;
+ }
+ }
+ return null;
+ }
+
+ private void updateOffsets(MessageQueue queue, long offset) {
+ _consumerOffsets.put(queue, offset + 1);
Review comment:
Actually, it is used in [resetOffsets@82](https://github.com/apache/pinot/pull/8274/files/0df2ebcfd8891dbb7a1dbeca0f8fd5556e969ff5#diff-1ccff2998469b33edf9814080c3edcfe3bcd733189441a027ea94222246d1574R82).
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