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[cdc] Use CdcSourceRecord as source type instead of raw String
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95 changes: 95 additions & 0 deletions
95
...dc/src/main/java/org/apache/paimon/flink/action/cdc/CdcDebeziumDeserializationSchema.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * 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; | ||
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| import com.ververica.cdc.debezium.DebeziumDeserializationSchema; | ||
| import org.apache.flink.api.common.typeinfo.TypeInformation; | ||
| import org.apache.flink.util.Collector; | ||
| import org.apache.kafka.connect.json.JsonConverter; | ||
| import org.apache.kafka.connect.json.JsonConverterConfig; | ||
| import org.apache.kafka.connect.source.SourceRecord; | ||
| import org.apache.kafka.connect.storage.ConverterConfig; | ||
| import org.apache.kafka.connect.storage.ConverterType; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| import static org.apache.flink.api.java.typeutils.TypeExtractor.getForClass; | ||
|
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| /** | ||
| * A JSON format implementation of {@link DebeziumDeserializationSchema} which deserializes the | ||
| * received {@link SourceRecord} to {@link CdcSourceRecord}. | ||
| */ | ||
| public class CdcDebeziumDeserializationSchema | ||
| implements DebeziumDeserializationSchema<CdcSourceRecord> { | ||
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| private static final long serialVersionUID = 1L; | ||
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| private transient JsonConverter jsonConverter; | ||
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| /** | ||
| * Configuration whether to enable {@link JsonConverterConfig#SCHEMAS_ENABLE_CONFIG} to include | ||
| * schema in messages. | ||
| */ | ||
| private final Boolean includeSchema; | ||
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| /** The custom configurations for {@link JsonConverter}. */ | ||
| private final Map<String, Object> customConverterConfigs; | ||
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| public CdcDebeziumDeserializationSchema() { | ||
| this(false); | ||
| } | ||
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| public CdcDebeziumDeserializationSchema(Boolean includeSchema) { | ||
| this(includeSchema, null); | ||
| } | ||
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| public CdcDebeziumDeserializationSchema( | ||
| Boolean includeSchema, Map<String, Object> customConverterConfigs) { | ||
| this.includeSchema = includeSchema; | ||
| this.customConverterConfigs = customConverterConfigs; | ||
| } | ||
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| @Override | ||
| public void deserialize(SourceRecord record, Collector<CdcSourceRecord> out) throws Exception { | ||
| if (jsonConverter == null) { | ||
| initializeJsonConverter(); | ||
| } | ||
| byte[] bytes = | ||
| jsonConverter.fromConnectData(record.topic(), record.valueSchema(), record.value()); | ||
| out.collect(new CdcSourceRecord(record.topic(), null, new String(bytes))); | ||
| } | ||
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| /** Initialize {@link JsonConverter} with given configs. */ | ||
| private void initializeJsonConverter() { | ||
| jsonConverter = new JsonConverter(); | ||
| final HashMap<String, Object> configs = new HashMap<>(2); | ||
| configs.put(ConverterConfig.TYPE_CONFIG, ConverterType.VALUE.getName()); | ||
| configs.put(JsonConverterConfig.SCHEMAS_ENABLE_CONFIG, includeSchema); | ||
| if (customConverterConfigs != null) { | ||
| configs.putAll(customConverterConfigs); | ||
| } | ||
| jsonConverter.configure(configs); | ||
| } | ||
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| @Override | ||
| public TypeInformation<CdcSourceRecord> getProducedType() { | ||
| return getForClass(CdcSourceRecord.class); | ||
| } | ||
| } |
62 changes: 62 additions & 0 deletions
62
...-flink-cdc/src/main/java/org/apache/paimon/flink/action/cdc/CdcDeserializationSchema.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| /* | ||
| * 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; | ||
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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.serialization.DeserializationSchema; | ||
| import org.apache.flink.api.common.typeinfo.TypeInformation; | ||
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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 simple deserialization schema for {@link CdcSourceRecord}. */ | ||
| public class CdcDeserializationSchema implements DeserializationSchema<CdcSourceRecord> { | ||
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| private static final long serialVersionUID = 1L; | ||
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| private final ObjectMapper objectMapper = new ObjectMapper(); | ||
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| public CdcDeserializationSchema() { | ||
| objectMapper | ||
| .configure(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS, true) | ||
| .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); | ||
| } | ||
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| @Override | ||
| public CdcSourceRecord deserialize(byte[] message) throws IOException { | ||
| if (message == null) { | ||
| return null; | ||
| } | ||
| return new CdcSourceRecord(objectMapper.readValue(message, JsonNode.class)); | ||
| } | ||
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| @Override | ||
| public boolean isEndOfStream(CdcSourceRecord nextElement) { | ||
| return false; | ||
| } | ||
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| @Override | ||
| public TypeInformation<CdcSourceRecord> getProducedType() { | ||
| return getForClass(CdcSourceRecord.class); | ||
| } | ||
| } |
85 changes: 85 additions & 0 deletions
85
...nk/paimon-flink-cdc/src/main/java/org/apache/paimon/flink/action/cdc/CdcSourceRecord.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| /* | ||
| * 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; | ||
|
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| import org.apache.paimon.annotation.Experimental; | ||
|
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| import javax.annotation.Nullable; | ||
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| import java.io.Serializable; | ||
| import java.util.Objects; | ||
|
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| /** A data change record from the CDC source. */ | ||
| @Experimental | ||
| public class CdcSourceRecord implements Serializable { | ||
|
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| private static final long serialVersionUID = 1L; | ||
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| @Nullable private final String topic; | ||
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| @Nullable private final Object key; | ||
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| private final Object value; | ||
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| public CdcSourceRecord(@Nullable String topic, @Nullable Object key, Object value) { | ||
| this.topic = topic; | ||
| this.key = key; | ||
| this.value = value; | ||
| } | ||
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| public CdcSourceRecord(Object value) { | ||
| this(null, null, value); | ||
| } | ||
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| @Nullable | ||
| public String getTopic() { | ||
| return topic; | ||
| } | ||
|
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| @Nullable | ||
| public Object getKey() { | ||
| return key; | ||
| } | ||
|
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| public Object getValue() { | ||
| return value; | ||
| } | ||
|
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (!(o instanceof CdcSourceRecord)) { | ||
| return false; | ||
| } | ||
|
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| CdcSourceRecord that = (CdcSourceRecord) o; | ||
| return Objects.equals(topic, that.topic) | ||
| && Objects.equals(key, that.key) | ||
| && Objects.equals(value, that.value); | ||
| } | ||
|
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(topic, key, value); | ||
| } | ||
|
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| @Override | ||
| public String toString() { | ||
| return topic + ": " + key + " " + value; | ||
| } | ||
| } |
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