org.apache.pulsar.client.impl.schema.reader.AvroReader 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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package org.apache.pulsar.client.impl.schema.reader;
import java.io.IOException;
import java.io.InputStream;
import java.util.Optional;
import org.apache.pulsar.shade.org.apache.avro.Schema;
import org.apache.pulsar.shade.org.apache.avro.io.BinaryDecoder;
import org.apache.pulsar.shade.org.apache.avro.io.DecoderFactory;
import org.apache.pulsar.shade.org.apache.avro.reflect.ReflectData;
import org.apache.pulsar.shade.org.apache.avro.reflect.ReflectDatumReader;
import org.apache.pulsar.client.api.SchemaSerializationException;
import org.apache.pulsar.client.api.schema.SchemaReader;
import org.apache.pulsar.client.impl.schema.AvroSchema;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AvroReader implements SchemaReader {
private ReflectDatumReader reader;
private static final ThreadLocal decoders =
new ThreadLocal<>();
private final Schema schema;
public AvroReader(Schema schema) {
this.reader = new ReflectDatumReader<>(schema);
this.schema = schema;
}
public AvroReader(Schema schema, ClassLoader classLoader, boolean jsr310ConversionEnabled) {
this.schema = schema;
if (classLoader != null) {
ReflectData reflectData = new ReflectData(classLoader);
AvroSchema.addLogicalTypeConversions(reflectData, jsr310ConversionEnabled);
this.reader = new ReflectDatumReader<>(schema, schema, reflectData);
} else {
this.reader = new ReflectDatumReader<>(schema);
}
}
public AvroReader(Schema writerSchema, Schema readerSchema, ClassLoader classLoader,
boolean jsr310ConversionEnabled) {
this.schema = readerSchema;
if (classLoader != null) {
ReflectData reflectData = new ReflectData(classLoader);
AvroSchema.addLogicalTypeConversions(reflectData, jsr310ConversionEnabled);
this.reader = new ReflectDatumReader<>(writerSchema, readerSchema, reflectData);
} else {
this.reader = new ReflectDatumReader<>(writerSchema, readerSchema);
}
}
@Override
public T read(byte[] bytes, int offset, int length) {
try {
BinaryDecoder decoderFromCache = decoders.get();
BinaryDecoder decoder = DecoderFactory.get().binaryDecoder(bytes, offset, length, decoderFromCache);
if (decoderFromCache == null) {
decoders.set(decoder);
}
return reader.read(null, DecoderFactory.get().binaryDecoder(bytes, offset, length, decoder));
} catch (IOException e) {
throw new SchemaSerializationException(e);
}
}
@Override
public T read(InputStream inputStream) {
try {
BinaryDecoder decoderFromCache = decoders.get();
BinaryDecoder decoder = DecoderFactory.get().binaryDecoder(inputStream, decoderFromCache);
if (decoderFromCache == null) {
decoders.set(decoder);
}
return reader.read(null, DecoderFactory.get().binaryDecoder(inputStream, decoder));
} catch (Exception e) {
throw new SchemaSerializationException(e);
} finally {
try {
inputStream.close();
} catch (IOException e) {
log.error("AvroReader close inputStream close error", e);
}
}
}
@Override
public Optional