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.jstorm.example.unittests.order;
  
  import backtype.storm.Config;
  import backtype.storm.topology.TopologyBuilder;
  import backtype.storm.tuple.Fields;
  import com.alibaba.jstorm.daemon.worker.JStormDebugger;
  import com.jstorm.example.unittests.utils.JStormUnitTestMetricValidator;
  import com.jstorm.example.unittests.utils.JStormUnitTestRunner;
  import org.junit.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static org.junit.Assert.*;
  
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * @author binyang.dby
   *
   * @Test pass at 2016/7/19
   */
  public class InOrderDeliveryTest {
      private static Logger LOG = LoggerFactory.getLogger(InOrderDeliveryTest.class);
      public final static int SPOUT_PARALLELISM_HINT = 8;
      public final static int BOLT_PARALLELISM_HINT = 8;
      public final static long SPOUT_MAX_SEND_NUM = 1000000;
  
      @Test
      public void testInOrderDelivery() {
          TopologyBuilder topologyBuilder = new TopologyBuilder();
          topologyBuilder.setSpout("spout", new InOrderTestSpout(SPOUT_MAX_SEND_NUM), SPOUT_PARALLELISM_HINT);
          //note that here we use fieldsGrouping, so that the tuples with the same "c1" will be sent to the same bolt.
          //as a result, even though we have BOLT_PARALLELISM_HINT bolts, each bolt maintains a order of tuples from
          //spouts that it can receive.
          topologyBuilder.setBolt("bolt", new InOrderTestBolt(), BOLT_PARALLELISM_HINT).fieldsGrouping("spout", new Fields("c1"));
  
          Map config = new HashMap();
          config.put(Config.TOPOLOGY_NAME, "InOrderDeliveryTest");
          config.put("topology.debug.metric.names", "emit,success,fail");
          config.put("topology.debug", false);
          config.put("topology.enable.metric.debug", true);
  
          //the following is just for the JStormUnitTestMetricValidator to pick the metric data
          //from all the metrics.If you are not using JStormUnitTestMetricValidator, it is useless.
          //The element is the key map with the metric value as a parameter in the callback
          //function validateMetrics().
          Set<String> userDefineMetrics = new HashSet<String>();
          userDefineMetrics.add(InOrderTestMetricsDef.METRIC_SPOUT_EMIT);
          userDefineMetrics.add(InOrderTestMetricsDef.METRIC_BOLT_SUCCESS);
          userDefineMetrics.add(InOrderTestMetricsDef.METRIC_BOLT_FAIL);
  
          JStormUnitTestMetricValidator validator = new JStormUnitTestMetricValidator(userDefineMetrics) {
              @Override
              public boolean validateMetrics(Map<String, Double> metrics) {
                  int spoutEmit = (int) metrics.get(InOrderTestMetricsDef.METRIC_SPOUT_EMIT).doubleValue();
                  int boltSuccess = (int) metrics.get(InOrderTestMetricsDef.METRIC_BOLT_SUCCESS).doubleValue();
                  int boltFail = (int) metrics.get(InOrderTestMetricsDef.METRIC_BOLT_FAIL).doubleValue();
  
                  LOG.info("validateMetrics: " + "spout emit = " + spoutEmit + " bolt success = " + boltSuccess);
                  assertEquals(SPOUT_MAX_SEND_NUM * SPOUT_PARALLELISM_HINT, spoutEmit);
                  assertEquals(spoutEmit, boltSuccess);       //all tuples should be in order
                  assertEquals(0, boltFail);
  
                  return true;
              }
          };
  
          JStormUnitTestRunner.submitTopology(topologyBuilder.createTopology(), config, 120, validator);
      }
  }
  