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.jstorm.ons.producer;
  
  import com.aliyun.openservices.ons.api.ONSFactory;
  import com.aliyun.openservices.ons.api.Producer;
  import com.aliyun.openservices.ons.api.PropertyKeyConst;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Properties;
  import org.apache.log4j.Logger;
  
  public class ProducerFactory {
  
      private static final Logger LOG = Logger.getLogger(ProducerFactory.class);
  
      public static Map<String, Producer> producers = new HashMap<String, Producer>();
  
      public static synchronized Producer mkInstance(ProducerConfig producerConfig) throws Exception {
  
          String producerId = producerConfig.getProducerId();
          Producer producer = producers.get(producerId);
          if (producer != null) {
  
              LOG.info("Producer of " + producerId + " has been created, don't recreate it ");
              return producer;
          }
  
          Properties properties = new Properties();
          properties.put(PropertyKeyConst.ProducerId, producerConfig.getProducerId());
          properties.put(PropertyKeyConst.AccessKey, producerConfig.getAccessKey());
          properties.put(PropertyKeyConst.SecretKey, producerConfig.getSecretKey());
  
          producer = ONSFactory.createProducer(properties);
          producer.start();
  
  
          producers.put(producerId, producer);
          LOG.info("Successfully create " + producerId + " producer");
  
          return producer;
  
      }
  
      public static synchronized void rmInstance(String producerId) {
          Producer producer = producers.remove(producerId);
          if (producer == null) {
  
              LOG.info("Producer of " + producerId + " has already been shutdown ");
              return;
          }
  
          producer.shutdown();
          LOG.info("Producer of " + producerId + " has been shutdown ");
      }
  
  }
  