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 backtype.storm.testing;
  
  import java.util.Map;
  
  import backtype.storm.metric.api.rpc.CountShellMetric;
  import backtype.storm.spout.ShellSpout;
  import backtype.storm.spout.SpoutOutputCollector;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.topology.IRichSpout;
  import backtype.storm.topology.OutputFieldsDeclarer;
  import backtype.storm.tuple.Fields;
  
  public class PythonShellMetricsSpout extends ShellSpout implements IRichSpout {
      private static final long serialVersionUID = 1999209252187463355L;
  
      public PythonShellMetricsSpout(String[] command) {
          super(command);
      }
  
      @Override
      public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
          super.open(conf, context, collector);
  
          CountShellMetric cMetric = new CountShellMetric();
          context.registerMetric("my-custom-shellspout-metric", cMetric, 5);
      }
  
      public void declareOutputFields(OutputFieldsDeclarer declarer) {
          declarer.declare(new Fields("field1"));
      }
  
      public Map<String, Object> getComponentConfiguration() {
          return null;
      }
  }
  