code: /*
   * 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.intel.hibench.stormbench.spout;
  
  import com.intel.hibench.stormbench.util.StormBenchConfig;
  
  import kafka.api.OffsetRequest;
  
  import org.apache.storm.kafka.*;
  import org.apache.storm.kafka.trident.OpaqueTridentKafkaSpout;
  import org.apache.storm.kafka.trident.TransactionalTridentKafkaSpout;
  import org.apache.storm.kafka.trident.TridentKafkaConfig;
  import org.apache.storm.topology.base.BaseRichSpout;
  import org.apache.storm.trident.spout.ITridentDataSource;
  
  public class KafkaSpoutFactory {
  
    public static BaseRichSpout getSpout(StormBenchConfig conf) {
      String topic = conf.topic;
      String consumerGroup = conf.consumerGroup;
      String zkHost = conf.zkHost;
      BrokerHosts brokerHosts = new ZkHosts(zkHost);
      SpoutConfig spoutConfig = new SpoutConfig(brokerHosts, topic, "", consumerGroup);
      spoutConfig.scheme = new KeyValueSchemeAsMultiScheme(new StringKeyValueScheme());
      spoutConfig.ignoreZkOffsets = true;
      spoutConfig.startOffsetTime = OffsetRequest.LatestTime();
      return new KafkaSpout(spoutConfig);
    }
  
  
    public static ITridentDataSource getTridentSpout(StormBenchConfig conf, boolean opaque) {
      String topic = conf.topic;
      String consumerGroup = conf.consumerGroup;
      String zkHost = conf.zkHost;
      BrokerHosts brokerHosts = new ZkHosts(zkHost);
      TridentKafkaConfig tridentKafkaConfig = new TridentKafkaConfig(brokerHosts, topic, consumerGroup);
      tridentKafkaConfig.scheme = new KeyValueSchemeAsMultiScheme(new StringKeyValueScheme());
      tridentKafkaConfig.ignoreZkOffsets = true;
      tridentKafkaConfig.startOffsetTime = OffsetRequest.LatestTime();
      if (opaque) {
        return new OpaqueTridentKafkaSpout(tridentKafkaConfig);
      } else {
        return new TransactionalTridentKafkaSpout(tridentKafkaConfig);
      }
    }
  
  }
  