org.apache.pulsar.client.impl.schema.writer.AvroWriter Maven / Gradle / Ivy
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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.writer;
import org.apache.pulsar.shade.com.google.common.annotations.VisibleForTesting;
import java.io.ByteArrayOutputStream;
import org.apache.pulsar.shade.org.apache.avro.Schema;
import org.apache.pulsar.shade.org.apache.avro.io.BinaryEncoder;
import org.apache.pulsar.shade.org.apache.avro.io.EncoderFactory;
import org.apache.pulsar.shade.org.apache.avro.reflect.ReflectData;
import org.apache.pulsar.shade.org.apache.avro.reflect.ReflectDatumWriter;
import org.apache.pulsar.client.api.SchemaSerializationException;
import org.apache.pulsar.client.api.schema.SchemaWriter;
import org.apache.pulsar.client.impl.schema.AvroSchema;
public class AvroWriter implements SchemaWriter {
private final ReflectDatumWriter writer;
private final BinaryEncoder encoder;
private final ByteArrayOutputStream byteArrayOutputStream;
public AvroWriter(Schema schema) {
this(schema, false);
}
public AvroWriter(Schema schema, boolean jsr310ConversionEnabled) {
this.byteArrayOutputStream = new ByteArrayOutputStream();
this.encoder = EncoderFactory.get().binaryEncoder(this.byteArrayOutputStream, null);
ReflectData reflectData = new ReflectData();
AvroSchema.addLogicalTypeConversions(reflectData, jsr310ConversionEnabled);
this.writer = new ReflectDatumWriter<>(schema, reflectData);
}
@VisibleForTesting
public BinaryEncoder getEncoder() {
return this.encoder;
}
@Override
public synchronized byte[] write(T message) {
byte[] outputBytes = null;
try {
writer.write(message, this.encoder);
} catch (Exception e) {
throw new SchemaSerializationException(e);
} finally {
try {
this.encoder.flush();
outputBytes = this.byteArrayOutputStream.toByteArray();
} catch (Exception ex) {
throw new SchemaSerializationException(ex);
}
this.byteArrayOutputStream.reset();
}
return outputBytes;
}
}