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.scheduler.job;
  
  import alluxio.client.block.stream.BlockWorkerClient;
  import alluxio.exception.runtime.AlluxioRuntimeException;
  import alluxio.resource.CloseableResource;
  import alluxio.wire.WorkerInfo;
  import alluxio.wire.WorkerNetAddress;
  
  import java.util.List;
  
  /**
   * Interface for providing worker information and client.
   */
  public interface WorkerProvider {
  
    /**
     * Gets a list of worker information.
     *
     * @return a list of worker information
     * @throws AlluxioRuntimeException if failed to get worker information
     */
    List<WorkerInfo> getWorkerInfos();
  
    /**
     * Gets a worker client.
     *
     * @param address the worker address
     * @return a worker client
     * @throws AlluxioRuntimeException if failed to get worker client
     */
    CloseableResource<BlockWorkerClient> getWorkerClient(WorkerNetAddress address);
  }
  