001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020package org.apache.reef.javabridge.utils; 021 022import org.apache.avro.io.*; 023import org.apache.avro.specific.SpecificDatumReader; 024import org.apache.avro.specific.SpecificDatumWriter; 025import org.apache.reef.javabridge.avro.DefinedRuntimes; 026 027import java.io.ByteArrayInputStream; 028import java.io.ByteArrayOutputStream; 029import java.io.IOException; 030import java.io.InputStream; 031 032/** 033 * Serializer for MultiRuntimeDefinition. 034 */ 035public final class DefinedRuntimesSerializer { 036 037 private static final String CHARSET_NAME = "UTF-8"; 038 039 /** 040 * Serializes DefinedRuntimes. 041 * @param definedRuntimes the Avro object to toString 042 * @return Serialized avro string 043 */ 044 public byte[] toBytes(final DefinedRuntimes definedRuntimes){ 045 final DatumWriter<DefinedRuntimes> configurationWriter = 046 new SpecificDatumWriter<>(DefinedRuntimes.class); 047 try (final ByteArrayOutputStream out = new ByteArrayOutputStream()) { 048 final BinaryEncoder binaryEncoder = EncoderFactory.get().binaryEncoder(out, null); 049 configurationWriter.write(definedRuntimes, binaryEncoder); 050 binaryEncoder.flush(); 051 out.flush(); 052 return out.toByteArray(); 053 } catch (final IOException e) { 054 throw new RuntimeException("Unable to serialize DefinedRuntimes", e); 055 } 056 } 057 058 /** 059 * Deserializes avro definition. 060 * @param serializedDefinedRuntimes serialized definition 061 * @return Avro object 062 * @throws IOException 063 */ 064 public DefinedRuntimes fromBytes(final byte[] serializedDefinedRuntimes) throws 065 IOException{ 066 try(InputStream is = new ByteArrayInputStream(serializedDefinedRuntimes)) { 067 final BinaryDecoder decoder = DecoderFactory.get().binaryDecoder(is, null); 068 final SpecificDatumReader<DefinedRuntimes> reader = new SpecificDatumReader<>(DefinedRuntimes.class); 069 final DefinedRuntimes rd = reader.read(null, decoder); 070 return rd; 071 } 072 } 073}