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[flink] Cdc ingestion support warkmark strategy (apache#2640)
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121 changes: 121 additions & 0 deletions
121
.../main/java/org/apache/paimon/flink/action/cdc/watermark/CdcTimestampExtractorFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.paimon.flink.action.cdc.watermark; | ||
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| import org.apache.paimon.utils.JsonSerdeUtil; | ||
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| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.core.JsonProcessingException; | ||
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| import com.ververica.cdc.connectors.mongodb.source.MongoDBSource; | ||
| import com.ververica.cdc.connectors.mysql.source.MySqlSource; | ||
| import org.apache.flink.connector.kafka.source.KafkaSource; | ||
| import org.apache.flink.connector.pulsar.source.PulsarSource; | ||
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|
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| import java.io.Serializable; | ||
| import java.time.LocalDateTime; | ||
| import java.time.ZoneId; | ||
| import java.time.format.DateTimeFormatter; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.function.Supplier; | ||
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| /** Factory for creating CDC timestamp extractors based on different source types. */ | ||
| public class CdcTimestampExtractorFactory implements Serializable { | ||
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| private static final long serialVersionUID = 1L; | ||
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| private static final Map<Class<?>, Supplier<CdcTimestampExtractor>> extractorMap = | ||
| new HashMap<>(); | ||
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| static { | ||
| extractorMap.put(MongoDBSource.class, MongoDBCdcTimestampExtractor::new); | ||
| extractorMap.put(MySqlSource.class, MysqlCdcTimestampExtractor::new); | ||
| extractorMap.put(PulsarSource.class, MessageQueueCdcTimestampExtractor::new); | ||
| extractorMap.put(KafkaSource.class, MessageQueueCdcTimestampExtractor::new); | ||
| } | ||
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| public static CdcTimestampExtractor createExtractor(Object source) { | ||
| Supplier<CdcTimestampExtractor> extractorSupplier = extractorMap.get(source.getClass()); | ||
| if (extractorSupplier != null) { | ||
| return extractorSupplier.get(); | ||
| } | ||
| throw new IllegalArgumentException( | ||
| "Unsupported source type: " + source.getClass().getName()); | ||
| } | ||
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| /** Timestamp extractor for MongoDB sources in CDC applications. */ | ||
| public static class MongoDBCdcTimestampExtractor implements CdcTimestampExtractor { | ||
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| private static final long serialVersionUID = 1L; | ||
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| @Override | ||
| public long extractTimestamp(String record) throws JsonProcessingException { | ||
| return JsonSerdeUtil.extractValue(record, Long.class, "payload", "ts_ms"); | ||
| } | ||
| } | ||
|
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| /** Timestamp extractor for Kafka/Pulsar sources in CDC applications. */ | ||
| public static class MessageQueueCdcTimestampExtractor implements CdcTimestampExtractor { | ||
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| private static final long serialVersionUID = 1L; | ||
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| @Override | ||
| public long extractTimestamp(String record) throws JsonProcessingException { | ||
| if (JsonSerdeUtil.isNodeExists(record, "mysqlType")) { | ||
| // Canal json | ||
| return JsonSerdeUtil.extractValue(record, Long.class, "ts"); | ||
| } else if (JsonSerdeUtil.isNodeExists(record, "pos")) { | ||
| // Ogg json | ||
| String dateTimeString = JsonSerdeUtil.extractValue(record, String.class, "op_ts"); | ||
| DateTimeFormatter formatter = | ||
| DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSSSSS"); | ||
| LocalDateTime dateTime = LocalDateTime.parse(dateTimeString, formatter); | ||
| return dateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(); | ||
| } else if (JsonSerdeUtil.isNodeExists(record, "xid")) { | ||
| // Maxwell json | ||
| return JsonSerdeUtil.extractValue(record, Long.class, "ts") * 1000; | ||
| } else if (JsonSerdeUtil.isNodeExists(record, "payload", "source", "connector")) { | ||
| // Dbz json | ||
| return JsonSerdeUtil.extractValue(record, Long.class, "payload", "ts_ms"); | ||
| } else if (JsonSerdeUtil.isNodeExists(record, "source", "connector")) { | ||
| // Dbz json | ||
| return JsonSerdeUtil.extractValue(record, Long.class, "ts_ms"); | ||
| } | ||
| throw new RuntimeException( | ||
| String.format( | ||
| "Failed to extract timestamp: The JSON format of the message queue is unsupported. Record details: %s", | ||
| record)); | ||
| } | ||
| } | ||
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| /** Timestamp extractor for MySQL sources in CDC applications. */ | ||
| public static class MysqlCdcTimestampExtractor implements CdcTimestampExtractor { | ||
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| @Override | ||
| public long extractTimestamp(String record) throws JsonProcessingException { | ||
| return JsonSerdeUtil.extractValue(record, Long.class, "source", "ts_ms"); | ||
| } | ||
| } | ||
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| /** Interface defining the contract for CDC timestamp extraction. */ | ||
| public interface CdcTimestampExtractor extends Serializable { | ||
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| long extractTimestamp(String record) throws JsonProcessingException; | ||
| } | ||
| } |
70 changes: 70 additions & 0 deletions
70
...-cdc/src/main/java/org/apache/paimon/flink/action/cdc/watermark/CdcWatermarkStrategy.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.paimon.flink.action.cdc.watermark; | ||
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| import org.apache.paimon.flink.action.cdc.watermark.CdcTimestampExtractorFactory.CdcTimestampExtractor; | ||
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| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.core.JsonProcessingException; | ||
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| import org.apache.flink.api.common.eventtime.Watermark; | ||
| import org.apache.flink.api.common.eventtime.WatermarkGenerator; | ||
| import org.apache.flink.api.common.eventtime.WatermarkGeneratorSupplier; | ||
| import org.apache.flink.api.common.eventtime.WatermarkOutput; | ||
| import org.apache.flink.api.common.eventtime.WatermarkStrategy; | ||
|
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| /** | ||
| * Watermark strategy for CDC sources, generating watermarks based on timestamps extracted from | ||
| * records. | ||
| */ | ||
| public class CdcWatermarkStrategy implements WatermarkStrategy<String> { | ||
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| private final CdcTimestampExtractor timestampExtractor; | ||
| private static final long serialVersionUID = 1L; | ||
| private long currentMaxTimestamp; | ||
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| public CdcWatermarkStrategy(CdcTimestampExtractor extractor) { | ||
| this.timestampExtractor = extractor; | ||
| } | ||
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| @Override | ||
| public WatermarkGenerator<String> createWatermarkGenerator( | ||
| WatermarkGeneratorSupplier.Context context) { | ||
| return new WatermarkGenerator<String>() { | ||
|
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| @Override | ||
| public void onEvent(String record, long timestamp, WatermarkOutput output) { | ||
| long tMs; | ||
| try { | ||
| tMs = timestampExtractor.extractTimestamp(record); | ||
| } catch (JsonProcessingException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| currentMaxTimestamp = Math.max(currentMaxTimestamp, tMs); | ||
| output.emitWatermark(new Watermark(currentMaxTimestamp - 1)); | ||
| } | ||
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| @Override | ||
| public void onPeriodicEmit(WatermarkOutput output) { | ||
| long timeMillis = System.currentTimeMillis(); | ||
| currentMaxTimestamp = Math.max(timeMillis, currentMaxTimestamp); | ||
| output.emitWatermark(new Watermark(currentMaxTimestamp - 1)); | ||
| } | ||
| }; | ||
| } | ||
| } |
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