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.flinkbench.datasource;
  
  import com.intel.hibench.flinkbench.util.KeyedTupleSchema;
  import com.intel.hibench.flinkbench.util.FlinkBenchConfig;
  
  import org.apache.flink.api.java.tuple.Tuple2;
  import org.apache.flink.streaming.api.functions.source.SourceFunction;
  import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer08;
  
  import java.util.Properties;
  
  public abstract class StreamBase {
  
    private SourceFunction<Tuple2<String, String>> dataStream;
  
    public SourceFunction<Tuple2<String, String>> getDataStream() {
      return this.dataStream;
    }
  
    public void createDataStream(FlinkBenchConfig config) throws Exception {
  
      Properties properties = new Properties();
      properties.setProperty("zookeeper.connect", config.zkHost);
      properties.setProperty("group.id", config.consumerGroup);
      properties.setProperty("bootstrap.servers", config.brokerList);
      properties.setProperty("auto.offset.reset", config.offsetReset);
  
      this.dataStream = new FlinkKafkaConsumer08<Tuple2<String, String>>(
          config.topic,
          new KeyedTupleSchema(),
          properties);
    }
  
    public void processStream(FlinkBenchConfig config) throws Exception {
    }
  }
  