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.master;
  
  import alluxio.ClientContext;
  
  import com.google.common.base.Preconditions;
  
  /**
   * This class can be used to obtain instances of a {@link MasterClientContext}. This is the
   * preferred method of creating master client configurations.
   */
  public class MasterClientContextBuilder {
    protected ClientContext mContext;
    protected MasterInquireClient mMasterInquireClient;
  
    /**
     * Create an instance of a {@link MasterClientContextBuilder}.
     *
     * @param ctx The {@link ClientContext} to base the configuration on
     */
    public MasterClientContextBuilder(ClientContext ctx) {
      mContext = Preconditions.checkNotNull(ctx, "ctx");
    }
  
    /**
     * Set the {@link MasterInquireClient} that the config will use.
     *
     * @param masterInquireClient the master inquire client
     * @return the builder
     */
    public MasterClientContextBuilder setMasterInquireClient(
        MasterInquireClient masterInquireClient) {
      mMasterInquireClient = masterInquireClient;
      return this;
    }
  
    /**
     * @return an instance of {@link MasterClientContext}
     */
    public MasterClientContext build() {
      if (mMasterInquireClient == null) {
        mMasterInquireClient = MasterInquireClient.Factory.create(mContext.getClusterConf(),
            mContext.getUserState());
      }
      return new MasterClientContext(mContext, mMasterInquireClient);
    }
  }
  