Source code

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 */
019package org.apache.reef.runtime.mesos.util;
020
021import org.apache.avro.io.*;
022import org.apache.avro.specific.SpecificDatumReader;
023import org.apache.avro.specific.SpecificDatumWriter;
024import org.apache.reef.wake.remote.Codec;
025import org.apache.reef.wake.remote.exception.RemoteRuntimeException;
026
027import javax.inject.Inject;
028import java.io.*;
029import java.util.logging.Level;
030import java.util.logging.Logger;
031
032/**
033 * EvaluatorControl codec.
034 */
035public class MesosRemoteManagerCodec implements Codec<EvaluatorControl> {
036  private static final Logger LOG = Logger.getLogger(MesosRemoteManagerCodec.class.getName());
037
038  @Inject
039  public MesosRemoteManagerCodec() {
040  }
041
042  @Override
043  public byte[] encode(final EvaluatorControl evaluatorControl) {
044    try {
045      LOG.log(Level.FINEST, "Before Encoding: {0}", evaluatorControl.toString());
046      final ByteArrayOutputStream out = new ByteArrayOutputStream();
047      final BinaryEncoder encoder = EncoderFactory.get().binaryEncoder(out, null);
048      final DatumWriter<EvaluatorControl> writer = new SpecificDatumWriter<>(EvaluatorControl.getClassSchema());
049      writer.write(evaluatorControl, encoder);
050      encoder.flush();
051      out.close();
052      LOG.log(Level.FINEST, "After Encoding");
053      return out.toByteArray();
054    } catch (final IOException ex) {
055      throw new RemoteRuntimeException(ex);
056    }
057  }
058
059  @Override
060  public EvaluatorControl decode(final byte[] buf) {
061    try {
062      LOG.log(Level.FINEST, "Before Decoding: {0}", buf);
063      final SpecificDatumReader<EvaluatorControl> reader = new SpecificDatumReader<>(EvaluatorControl.getClassSchema());
064      final Decoder decoder = DecoderFactory.get().binaryDecoder(buf, null);
065      LOG.log(Level.FINEST, "After Decoding");
066      return reader.read(null, decoder);
067    } catch (final IOException ex) {
068      throw new RemoteRuntimeException(ex);
069    }
070  }
071}