org.apache.pulsar.client.impl.schema.generic.GenericAvroWriter Maven / Gradle / Ivy
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* distributed with this work for additional information
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* 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
*
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package org.apache.pulsar.client.impl.schema.generic;
import java.io.ByteArrayOutputStream;
import org.apache.pulsar.shade.org.apache.avro.Schema;
import org.apache.pulsar.shade.org.apache.avro.generic.GenericDatumWriter;
import org.apache.pulsar.shade.org.apache.avro.io.BinaryEncoder;
import org.apache.pulsar.shade.org.apache.avro.io.EncoderFactory;
import org.apache.pulsar.client.api.SchemaSerializationException;
import org.apache.pulsar.client.api.schema.GenericRecord;
import org.apache.pulsar.client.api.schema.SchemaWriter;
public class GenericAvroWriter implements SchemaWriter {
private final GenericDatumWriter writer;
private BinaryEncoder encoder;
private final ByteArrayOutputStream byteArrayOutputStream;
public GenericAvroWriter(Schema schema) {
this.writer = new GenericDatumWriter<>(schema);
this.byteArrayOutputStream = new ByteArrayOutputStream();
this.encoder = EncoderFactory.get().binaryEncoder(this.byteArrayOutputStream, null);
}
@Override
public synchronized byte[] write(GenericRecord message) {
try {
writer.write(((GenericAvroRecord) message).getAvroRecord(), this.encoder);
this.encoder.flush();
return this.byteArrayOutputStream.toByteArray();
} catch (Exception e) {
throw new SchemaSerializationException(e);
} finally {
this.byteArrayOutputStream.reset();
}
}
}