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.io.network.naming.serialization;
020
021import org.apache.reef.io.network.naming.avro.AvroNamingUnRegisterRequest;
022import org.apache.reef.io.network.naming.exception.NamingRuntimeException;
023import org.apache.reef.wake.IdentifierFactory;
024import org.apache.reef.wake.remote.Codec;
025
026import javax.inject.Inject;
027
028/**
029 * Naming un-registration request codec
030 */
031public final class NamingUnregisterRequestCodec implements Codec<NamingUnregisterRequest> {
032
033  private final IdentifierFactory factory;
034
035  /**
036   * Constructs a naming un-registration request codec
037   *
038   * @param factory the identifier factory
039   */
040  @Inject
041  public NamingUnregisterRequestCodec(final IdentifierFactory factory) {
042    this.factory = factory;
043  }
044
045  /**
046   * Encodes the naming un-registration request to bytes
047   *
048   * @param obj the naming un-registration request
049   * @return a byte array
050   */
051  @Override
052  public byte[] encode(NamingUnregisterRequest obj) {
053    final AvroNamingUnRegisterRequest result = AvroNamingUnRegisterRequest.newBuilder()
054        .setId(obj.getIdentifier().toString())
055        .build();
056    return AvroUtils.toBytes(result, AvroNamingUnRegisterRequest.class);
057  }
058
059  /**
060   * Decodes the bytes to a naming un-registration request
061   *
062   * @param buf the byte array
063   * @return a naming un-registration request
064   * @throws NamingRuntimeException
065   */
066  @Override
067  public NamingUnregisterRequest decode(byte[] buf) {
068    final AvroNamingUnRegisterRequest result = AvroUtils.fromBytes(buf, AvroNamingUnRegisterRequest.class);
069    return new NamingUnregisterRequest(factory.getNewInstance(result.getId().toString()));
070  }
071
072}