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.base.Preconditions;
  import com.google.common.collect.ImmutableList;
  
  import java.util.Collection;
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * Configuration of a job replicating a block.
   */
  @ThreadSafe
  @JsonTypeName(SetReplicaConfig.NAME)
  public final class SetReplicaConfig implements PlanConfig {
    private static final long serialVersionUID = 1807931900696165058L;
    public static final String NAME = "Replicate";
  
    /** Which block to replicate. */
    private long mBlockId;
  
    /** Alluxio path of the file to replicate. */
    private String mPath;
  
    /** target replicas to make for this block. */
    private int mReplicas;
  
    /**
     * Creates a new instance of {@link SetReplicaConfig}.
     *
     * @param path Alluxio path of the file whose block to replicate
     * @param blockId id of the block to replicate
     * @param replicas number of additional replicas to create
     */
    @JsonCreator
    public SetReplicaConfig(@JsonProperty("path") String path, @JsonProperty("blockId") long blockId,
        @JsonProperty("replicas") int replicas) {
      Preconditions.checkArgument(replicas >= 0, "replicas must be non-negative.");
      mBlockId = blockId;
      mPath = path;
      mReplicas = replicas;
    }
  
    @Override
    public String getName() {
      return NAME;
    }
  
    @Override
    public Collection<String> affectedPaths() {
      return ImmutableList.of(mPath);
    }
  
    /**
     * @return the id of the block to replicate
     */
    public long getBlockId() {
      return mBlockId;
    }
  
    /**
     * @return the path of the file whose block to replicate
     */
    public String getPath() {
      return mPath;
    }
  
    /**
     * @return number of additional replicas to create
     */
    public int getReplicas() {
      return mReplicas;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (obj == null) {
        return false;
      }
      if (this == obj) {
        return true;
      }
      if (!(obj instanceof SetReplicaConfig)) {
        return false;
      }
      SetReplicaConfig that = (SetReplicaConfig) obj;
      return Objects.equal(mBlockId, that.mBlockId)
          && Objects.equal(mPath, that.mPath)
          && Objects.equal(mReplicas, that.mReplicas);
    }
  
    @Override
    public int hashCode() {
      return Objects.hashCode(mBlockId, mPath, mReplicas);
    }
  
    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
          .add("blockId", mBlockId)
          .add("path", mPath)
          .add("replicas", mReplicas)
          .toString();
    }
  }
  