001/*
002 * (C) Copyright 2018 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bdelbosc
018 */
019package org.nuxeo.lib.stream.codec;
020
021import java.io.IOException;
022
023import org.apache.avro.AvroRuntimeException;
024import org.apache.avro.Schema;
025import org.apache.avro.message.RawMessageDecoder;
026import org.apache.avro.message.RawMessageEncoder;
027import org.apache.avro.reflect.ReflectData;
028
029/**
030 * Avro Binary format, there is no header, the schema must be the same for encoder and decoder.
031 *
032 * @since 10.2
033 */
034public class AvroBinaryCodec<T> implements Codec<T> {
035    public static final String NAME = "avroBinary";
036
037    protected final Class<T> messageClass;
038
039    protected final Schema schema;
040
041    protected final RawMessageEncoder<T> encoder;
042
043    protected final RawMessageDecoder<T> decoder;
044
045    public AvroBinaryCodec(Class<T> messageClass) {
046        this.messageClass = messageClass;
047        schema = ReflectData.get().getSchema(messageClass);
048        encoder = new RawMessageEncoder<>(ReflectData.get(), schema);
049        decoder = new RawMessageDecoder<>(ReflectData.get(), schema);
050    }
051
052    @Override
053    public String getName() {
054        return NAME;
055    }
056
057    @Override
058    public byte[] encode(T object) {
059        try {
060            return encoder.encode(object).array();
061        } catch (IOException e) {
062            throw new IllegalArgumentException(e);
063        }
064    }
065
066    @Override
067    public T decode(byte[] data) {
068        try {
069            return decoder.decode(data, null);
070        } catch (IOException | IndexOutOfBoundsException | AvroRuntimeException e) {
071            throw new IllegalArgumentException(e);
072        }
073    }
074}