/*
 * Licensed to the University of California, Berkeley under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You 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
 *
 * http://www.apache.org/licenses/LICENSE-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 tachyon.worker.block.evictor;

import java.util.List;

import com.google.common.base.Preconditions;

import tachyon.Pair;

/**
 * This class provides information about the blocks that need to be moved when evicting.
 */
public class EvictionPlan {
  /** A list of pairs of blockId and tierAlias **/
  private final List<Pair<Long, Integer>> mToTransfer;
  private final List<Long> mToEvict;

  public EvictionPlan(List<Pair<Long, Integer>> toTransfer, List<Long> toEvict) {
    mToTransfer = Preconditions.checkNotNull(toTransfer);
    mToEvict = Preconditions.checkNotNull(toEvict);
  }

  public List<Pair<Long, Integer>> toTransfer() {
    return mToTransfer;
  }

  public List<Long> toEvict() {
    return mToEvict;
  }

  @Override
  public String toString() {
    return "toTransfer: " + mToTransfer.toString() + ", toEvict: " + mToEvict.toString();
  }
}

/*
 * Licensed to the University of California, Berkeley under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You 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
 *
 * http://www.apache.org/licenses/LICENSE-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 tachyon.worker.block.evictor;

import java.util.List;

import com.google.common.base.Preconditions;

import tachyon.Pair;
import tachyon.worker.BlockStoreLocation;

/**
 * This class provides information about the blocks that need to be moved when evicting.
 */
public class EvictionPlan {
  /** A list of pairs of blockId and its location to move to */
  private final List<Pair<Long, BlockStoreLocation>> mToMove;
  /** A list of blockId to remove */
  private final List<Long> mToEvict;

  public EvictionPlan(List<Pair<Long, BlockStoreLocation>> toTransfer, List<Long> toEvict) {
    mToMove = Preconditions.checkNotNull(toTransfer);
    mToEvict = Preconditions.checkNotNull(toEvict);
  }

  public List<Pair<Long, BlockStoreLocation>> toTransfer() {
    return mToMove;
  }

  public List<Long> toEvict() {
    return mToEvict;
  }

  @Override
  public String toString() {
    return "toTransfer: " + mToMove.toString() + ", toEvict: " + mToEvict.toString();
  }
}

Update EvictionPlan to return BlockStoreLocation for blocks to move