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 org.apache.apex.examples.parser.regexparser;
  
  import org.apache.hadoop.conf.Configuration;
  
  import com.datatorrent.api.Context;
  import com.datatorrent.api.DAG;
  import com.datatorrent.api.StreamingApplication;
  import com.datatorrent.api.annotation.ApplicationAnnotation;
  import com.datatorrent.contrib.parser.RegexParser;
  
  @ApplicationAnnotation(name = "RegexParser")
  /**
   * @since 3.8.0
   */
  public class RegexParserApplication implements StreamingApplication
  {
    @Override
    public void populateDAG(DAG dag, Configuration conf)
    {
      ServerLogGenerator logGenerator = dag.addOperator("logGenerator", ServerLogGenerator.class);
      RegexParser regexParser = dag.addOperator("regexParser", RegexParser.class);
      dag.setOutputPortAttribute(regexParser.out, Context.PortContext.TUPLE_CLASS, ServerLog.class);
  
      FileOutputOperator regexWriter = dag.addOperator("regexWriter", FileOutputOperator.class);
      FileOutputOperator regexErrorWriter = dag.addOperator("regexErrorWriter", FileOutputOperator.class);
  
      dag.addStream("regexInput", logGenerator.outputPort, regexParser.in);
      dag.addStream("regexOutput", regexParser.out, regexWriter.input);
      dag.addStream("regexError", regexParser.err, regexErrorWriter.input);
    }
  }
  