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.alibaba.cloudapp.messaging.kafka;
  
  import org.apache.kafka.clients.consumer.Consumer;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  
  public class CloudAppKafkaConsumerFactory<K, V> extends DefaultKafkaConsumerFactory<K, V> {
  
      private static final Logger logger = LoggerFactory.getLogger(CloudAppKafkaConsumer.class);
      
      private static final List<CloudAppKafkaConsumer<?, ?>> CONSUMERS =
              Collections.synchronizedList(new ArrayList<>());
  
      public CloudAppKafkaConsumerFactory(Map<String, Object> configs) {
          super(configs);
      }
  
      protected Consumer<K, V> createRawConsumer(Map<String, Object> configProps) {
          CloudAppKafkaConsumer<K,V> consumer = new CloudAppKafkaConsumer<>(
                  configProps, getKeyDeserializer(), getValueDeserializer());
          CONSUMERS.add(consumer);
          return consumer;
      }
      
      public void refresh(Map<String, Object> configs) {
          super.updateConfigs(configs);
          CONSUMERS.forEach(CloudAppKafkaConsumer::close);
          CONSUMERS.clear();
      }
  }
  