content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License 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 org.apache.atlas.util;
  
  import org.apache.atlas.annotation.AtlasService;
  import org.apache.atlas.discovery.SearchContext;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  
  @AtlasService
  public class SearchTracker {
      private final Map<String, SearchContext> activeSearches = new HashMap<>();
  
      /**
       * @param context
       */
      public String add(SearchContext context) {
          String searchId = Thread.currentThread().getName();
  
          activeSearches.put(searchId, context);
  
          return searchId;
      }
  
      /**
       * @param searchId
       * @return
       */
      public SearchContext terminate(String searchId) {
          SearchContext ret = null;
  
          if (activeSearches.containsKey(searchId)) {
              SearchContext pipelineToTerminate = activeSearches.remove(searchId);
  
              pipelineToTerminate.terminateSearch(true);
  
              ret = pipelineToTerminate;
          }
  
          return ret;
      }
  
      public SearchContext remove(String id) {
          return activeSearches.remove(id);
      }
  
      /**
       * @return
       */
      public Set<String> getActiveSearches() {
          return activeSearches.keySet();
      }
  }
  