org.apache.hudi.common.model.HoodieAvroPayload Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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*/
package org.apache.hudi.common.model;
import org.apache.hudi.avro.HoodieAvroUtils;
import org.apache.hudi.common.util.Option;
import org.apache.avro.Schema;
import org.apache.avro.generic.GenericRecord;
import org.apache.avro.generic.IndexedRecord;
import java.io.IOException;
/**
* This is a payload to wrap a existing Hoodie Avro Record. Useful to create a HoodieRecord over existing GenericRecords
* in a hoodie tables (useful in compactions)
*/
public class HoodieAvroPayload implements HoodieRecordPayload {
// Store the GenericRecord converted to bytes - 1) Doesn't store schema hence memory efficient 2) Makes the payload
// java serializable
private final byte[] recordBytes;
private final Comparable orderingVal;
public HoodieAvroPayload(GenericRecord record, Comparable orderingVal) {
this.recordBytes = record == null ? new byte[0] : HoodieAvroUtils.avroToBytes(record);
this.orderingVal = orderingVal;
}
public HoodieAvroPayload(Option record) {
this.recordBytes = record.isPresent() ? HoodieAvroUtils.avroToBytes(record.get()) : new byte[0];
this.orderingVal = 0;
}
@Override
public HoodieAvroPayload preCombine(HoodieAvroPayload oldValue) {
return this;
}
@Override
public Option combineAndGetUpdateValue(IndexedRecord currentValue, Schema schema) throws IOException {
return getInsertValue(schema);
}
@Override
public Option getInsertValue(Schema schema) throws IOException {
if (recordBytes.length == 0) {
return Option.empty();
}
return Option.of(HoodieAvroUtils.bytesToAvro(recordBytes, schema));
}
// for examples
public byte[] getRecordBytes() {
return recordBytes;
}
@Override
public Comparable getOrderingValue() {
return orderingVal;
}
}