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.hive.hook.utils;
  
  import com.google.common.annotations.VisibleForTesting;
  import org.apache.atlas.hive.hook.HiveHook;
  import org.apache.atlas.model.notification.HookNotification;
  import org.apache.commons.configuration.Configuration;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Arrays;
  import java.util.List;
  
  import static org.apache.atlas.hive.hook.HiveHook.HOOK_HIVE_IGNORE_DDL_OPERATIONS;
  
  public class ActiveEntityFilter {
      private static final Logger LOG = LoggerFactory.getLogger(ActiveEntityFilter.class);
  
      private static EntityFilter entityFilter;
  
      public static void init(Configuration configuration) {
          boolean skipDdlOperations = configuration.getBoolean(HOOK_HIVE_IGNORE_DDL_OPERATIONS, false);
          List<String> additionalTypesToRetain = getConfiguredTypesToRetainForDDLEntityFilter(configuration);
  
          init(skipDdlOperations, additionalTypesToRetain);
          LOG.info("atlas.hook.hive.ignore.ddl.operations={} - {}", skipDdlOperations, entityFilter.getClass().getSimpleName());
      }
  
      @VisibleForTesting
      static void init(boolean lineageOnlyFilter, List<String> additionalTypesToRetain) {
          entityFilter = lineageOnlyFilter ? new HiveDDLEntityFilter(additionalTypesToRetain) : new PassthroughFilter();
      }
  
      public static List<HookNotification> apply(List<HookNotification> incoming) {
          return entityFilter.apply(incoming);
      }
  
      private static List<String> getConfiguredTypesToRetainForDDLEntityFilter(Configuration configuration) {
          try {
              if (configuration.containsKey(HiveHook.HOOK_HIVE_FILTER_ENTITY_ADDITIONAL_TYPES_TO_RETAIN)) {
                  String[] configuredTypes = configuration.getStringArray(HiveHook.HOOK_HIVE_FILTER_ENTITY_ADDITIONAL_TYPES_TO_RETAIN);
  
                  return Arrays.asList(configuredTypes);
              }
          } catch (Exception e) {
              LOG.error("Failed to load application properties", e);
          }
  
          return null;
      }
  }
  