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
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * 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 com.ververica.field.dynamicrules.functions;
  
  import com.ververica.field.dynamicrules.Rule;
  import java.util.HashSet;
  import java.util.Set;
  import org.apache.flink.api.common.state.BroadcastState;
  import org.apache.flink.api.common.state.MapState;
  
  class ProcessingUtils {
  
    static void handleRuleBroadcast(Rule rule, BroadcastState<Integer, Rule> broadcastState)
        throws Exception {
      switch (rule.getRuleState()) {
        case ACTIVE:
        case PAUSE:
          broadcastState.put(rule.getRuleId(), rule);
          break;
        case DELETE:
          broadcastState.remove(rule.getRuleId());
          break;
      }
    }
  
    static <K, V> Set<V> addToStateValuesSet(MapState<K, Set<V>> mapState, K key, V value)
        throws Exception {
  
      Set<V> valuesSet = mapState.get(key);
  
      if (valuesSet != null) {
        valuesSet.add(value);
      } else {
        valuesSet = new HashSet<>();
        valuesSet.add(value);
      }
      mapState.put(key, valuesSet);
      return valuesSet;
    }
  }
  