content: /*
   * Copyright 2014-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License").
   * You may not use this file except in compliance with the License.
   * A copy of the License is located at
   *
   *  http://aws.amazon.com/apache2.0
   *
   * or in the "license" file accompanying this file. This file 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 com.amazon.janusgraph.diskstorage.dynamodb;
  
  import java.util.concurrent.Callable;
  
  import org.janusgraph.diskstorage.StaticBuffer;
  
  import com.amazonaws.services.dynamodbv2.model.GetItemRequest;
  import com.amazonaws.services.dynamodbv2.model.GetItemResult;
  
  /**
   * Worker class used to execute a GetItem request as a callable.
   * Used to allow multiqueries against SINGLE stores to execute across many threads.
   */
  public class GetItemWorker implements Callable<GetItemResultWrapper> {
  
      private final GetItemRequest request;
      private final DynamoDbDelegate dynamoDbDelegate;
      private final StaticBuffer hashKey;
  
      public GetItemWorker(final StaticBuffer hashKey, final GetItemRequest request, final DynamoDbDelegate dynamoDbDelegate) {
          this.hashKey = hashKey;
          this.request = request;
          this.dynamoDbDelegate = dynamoDbDelegate;
      }
  
      @Override
      public GetItemResultWrapper call() throws Exception {
          final GetItemResult result = new ExponentialBackoff.GetItem(request, dynamoDbDelegate).runWithBackoff();
          return new GetItemResultWrapper(hashKey, result);
      }
  
  }
  