content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.job.plan.replicate;
  
  import alluxio.job.plan.PlanConfig;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.fasterxml.jackson.annotation.JsonTypeName;
  import com.google.common.base.MoreObjects;
  import com.google.common.base.Objects;
  import com.google.common.collect.ImmutableList;
  import org.apache.commons.lang3.StringUtils;
  
  import java.util.Collection;
  import java.util.Collections;
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * Configuration of a job moving a block.
   */
  @ThreadSafe
  @JsonTypeName(MoveConfig.NAME)
  public final class MoveConfig implements PlanConfig {
    private static final long serialVersionUID = -5198319303173120739L;
  
    public static final String NAME = "Move";
  
    private String mPath;
  
    /** Which block to move. */
    private long mBlockId;
  
    /** Which medium to move to. */
    private String mMediumType;
  
    /** worker host containing this block. */
    private String mWorkerHost;
  
    /**
     * Creates a new instance of {@link MoveConfig}.
     *
     * @param path alluxio path involved in this move
     * @param blockId id of the block to move
     * @param workerHost host name of the worker
     * @param mediumType the medium type to move to
     */
    @JsonCreator
    public MoveConfig(@JsonProperty("path") String path,
        @JsonProperty("blockId") long blockId,
        @JsonProperty("workerHost") String workerHost,
        @JsonProperty("mediumType") String mediumType) {
      mPath = path;
      mBlockId = blockId;
      mMediumType = mediumType;
      mWorkerHost = workerHost;
    }
  
    @Override
    public String getName() {
      return NAME;
    }
  
    @Override
    public Collection<String> affectedPaths() {
      if (!StringUtils.isEmpty(mPath)) {
        return ImmutableList.of(mPath);
      }
      return Collections.EMPTY_LIST;
    }
  
    /**
     * @return the block ID for this job
     */
    public long getBlockId() {
      return mBlockId;
    }
  
    /**
     * @return the medium type of this move job
     */
    public String getMediumType() {
      return mMediumType;
    }
  
    /**
     * @return the worker host
     */
    public String getWorkerHost() {
      return mWorkerHost;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (obj == null) {
        return false;
      }
      if (this == obj) {
        return true;
      }
      if (!(obj instanceof MoveConfig)) {
        return false;
      }
      MoveConfig that = (MoveConfig) obj;
      return Objects.equal(mBlockId, that.mBlockId)
          && Objects.equal(mWorkerHost, that.mWorkerHost)
          && Objects.equal(mMediumType, that.mMediumType)
          && Objects.equal(mPath, that.mPath);
    }
  
    @Override
    public int hashCode() {
      return Objects.hashCode(mBlockId, mMediumType, mWorkerHost);
    }
  
    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
          .add("blockId", mBlockId)
          .add("mediumType", mMediumType)
          .add("workerHost", mWorkerHost)
          .add("path", mPath)
          .toString();
    }
  }
  