content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * Licensed 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
   *
   * https://opensource.org/licenses/Apache-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License
   * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing permissions and limitations under
   * the License.
   *
   */
  package com.tencent.angel.graph.psf.hyperanf;
  
  import com.clearspring.analytics.stream.cardinality.HyperLogLogPlus;
  import com.tencent.angel.ml.matrix.psf.get.base.PartitionGetResult;
  import com.tencent.angel.utils.StringUtils;
  import io.netty.buffer.ByteBuf;
  import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
  import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
  import it.unimi.dsi.fastutil.objects.ObjectIterator;
  import java.io.IOException;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import scala.Tuple2;
  
  public class GetWriteCounterPartResult extends PartitionGetResult {
  
    private static final Log LOG = LogFactory.getLog(GetHyperLogLogPartParam.class);
  
    private Long2ObjectOpenHashMap<Tuple2<HyperLogLogPlus, Long>> logs;
  
    public GetWriteCounterPartResult(Long2ObjectOpenHashMap<Tuple2<HyperLogLogPlus, Long>> logs) {
      this.logs = logs;
    }
  
    public GetWriteCounterPartResult() {
      this.logs = new Long2ObjectOpenHashMap<>();
    }
  
    public Long2ObjectOpenHashMap<Tuple2<HyperLogLogPlus, Long>> getLogs() {
      return logs;
    }
  
    @Override
    public void serialize(ByteBuf output) {
      output.writeInt(logs.size());
      ObjectIterator<Long2ObjectMap.Entry<Tuple2<HyperLogLogPlus, Long>>> it =
          logs.long2ObjectEntrySet().fastIterator();
      try {
        while (it.hasNext()) {
          Long2ObjectMap.Entry<Tuple2<HyperLogLogPlus, Long>> entry = it.next();
          output.writeLong(entry.getLongKey());
          byte[] bytes = entry.getValue()._1.getBytes();
          output.writeInt(bytes.length);
          output.writeBytes(bytes);
          output.writeLong(entry.getValue()._2);
        }
      } catch (IOException e) {
        LOG.error("Serialize failed, details = " + StringUtils.stringifyException(e));
        throw new RuntimeException(e);
      }
    }
  
    @Override
    public void deserialize(ByteBuf input) {
      int size = input.readInt();
      logs = new Long2ObjectOpenHashMap<>();
      try {
        for (int i = 0; i < size; i++) {
          long key = input.readLong();
          int len = input.readInt();
          byte[] bytes = new byte[len];
          input.readBytes(bytes);
          HyperLogLogPlus plus = HyperLogLogPlus.Builder.build(bytes);
          long cardDiff = input.readLong();
          logs.put(key, new Tuple2<>(plus, cardDiff));
        }
      } catch (IOException e) {
        LOG.error("Deserialize failed, details = " + StringUtils.stringifyException(e));
        throw new RuntimeException(e);
      }
    }
  
    @Override
    public int bufferLen() {
      int len = 4;
      ObjectIterator<Long2ObjectMap.Entry<Tuple2<HyperLogLogPlus, Long>>> it =
          logs.long2ObjectEntrySet().fastIterator();
      try {
        while (it.hasNext()) {
          Long2ObjectMap.Entry<Tuple2<HyperLogLogPlus, Long>> entry = it.next();
          len += 8;
          len += 4;
          len += entry.getValue()._1.getBytes().length;
          len += 8;
        }
      } catch (IOException e) {
        LOG.error("calc bufferLen failed, details = " + StringUtils.stringifyException(e));
        throw new RuntimeException(e);
      }
      return len;
    }
  }