com.tencent.angel.sona.psf.embedding.line.DotParam Maven / Gradle / Ivy

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/*
 * 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.sona.psf.embedding.line;

import com.tencent.angel.PartitionKey;
import com.tencent.angel.ml.matrix.psf.get.base.GetParam;
import com.tencent.angel.ml.matrix.psf.get.base.PartitionGetParam;
import com.tencent.angel.psagent.PSAgentContext;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

public class DotParam extends GetParam {

  private byte[] dataBuf;
  private int bufLength;

  public DotParam(int matrixId,
                  int seed,
                  int partitionId,
                  int[] src,
                  int[] dst) {
    super(matrixId);
    this.bufLength = 12 + src.length * 8;
    this.dataBuf = new byte[bufLength];
    ByteBuffer wrapper = ByteBuffer.wrap(this.dataBuf);
    wrapper.putInt(seed);
    wrapper.putInt(partitionId);
    wrapper.putInt(src.length);
    for (int a = 0; a < src.length; a++) {
      wrapper.putInt(src[a]);
      wrapper.putInt(dst[a]);
    }
  }

  @Override
  public List split() {
    List pkeys = PSAgentContext.get().getMatrixMetaManager().getPartitions(matrixId);
    List params = new ArrayList<>();
    for (PartitionKey pkey: pkeys) {
      params.add(new DotPartitionParam(matrixId, pkey, dataBuf, bufLength));
    }
    return params;
  }
}