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Kafka debezium json supports automatic discovery of primary keys
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94 changes: 94 additions & 0 deletions
94
...ain/java/org/apache/paimon/flink/action/cdc/kafka/KafkaKeyValueDeserializationSchema.java
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| /* | ||
| * 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.kafka; | ||
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| import org.apache.paimon.flink.action.cdc.CdcSourceRecord; | ||
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| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.databind.DeserializationFeature; | ||
| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.databind.JsonNode; | ||
| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.databind.ObjectMapper; | ||
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| import org.apache.flink.api.common.typeinfo.TypeInformation; | ||
| import org.apache.flink.connector.kafka.source.reader.deserializer.KafkaRecordDeserializationSchema; | ||
| import org.apache.flink.util.Collector; | ||
| import org.apache.kafka.clients.consumer.ConsumerRecord; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.io.IOException; | ||
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| import static org.apache.flink.api.java.typeutils.TypeExtractor.getForClass; | ||
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| /** A kafka key value deserialization schema for {@link CdcSourceRecord}. */ | ||
| public class KafkaKeyValueDeserializationSchema | ||
| implements KafkaRecordDeserializationSchema<CdcSourceRecord> { | ||
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| private static final long serialVersionUID = 1L; | ||
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| private static final Logger LOG = | ||
| LoggerFactory.getLogger(KafkaKeyValueDeserializationSchema.class); | ||
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| private final ObjectMapper objectMapper = new ObjectMapper(); | ||
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| public KafkaKeyValueDeserializationSchema() { | ||
| objectMapper | ||
| .configure(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS, true) | ||
| .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); | ||
| } | ||
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| public CdcSourceRecord deserialize(ConsumerRecord<byte[], byte[]> record) throws IOException { | ||
| if (record == null || record.value() == null) { | ||
| return null; | ||
| } | ||
| try { | ||
| JsonNode key = | ||
| record.key() != null | ||
| ? objectMapper.readValue(record.key(), JsonNode.class) | ||
| : null; | ||
| CdcSourceRecord sourceRecord = | ||
| new CdcSourceRecord( | ||
| key, objectMapper.readValue(record.value(), JsonNode.class)); | ||
| return sourceRecord; | ||
| } catch (Exception e) { | ||
| LOG.error("Invalid Json:\n{}", new String(record.value())); | ||
| throw e; | ||
| } | ||
| } | ||
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| @Override | ||
| public void deserialize( | ||
| ConsumerRecord<byte[], byte[]> record, Collector<CdcSourceRecord> collector) | ||
| throws IOException { | ||
| try { | ||
| CdcSourceRecord sourceRecord = deserialize(record); | ||
| if (sourceRecord == null) { | ||
| return; | ||
| } | ||
| collector.collect(sourceRecord); | ||
| } catch (Exception e) { | ||
| LOG.error("Invalid Json:\n{}", new String(record.value())); | ||
| throw e; | ||
| } | ||
| } | ||
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| @Override | ||
| public TypeInformation<CdcSourceRecord> getProducedType() { | ||
| return getForClass(CdcSourceRecord.class); | ||
| } | ||
| } |
71 changes: 0 additions & 71 deletions
71
.../org/apache/paimon/flink/action/cdc/kafka/KafkaValueOnlyDeserializationSchemaWrapper.java
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