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.alipay.dw.jstorm.example.newindow;
  
  import backtype.storm.Config;
  import backtype.storm.StormSubmitter;
  import backtype.storm.spout.SpoutOutputCollector;
  import backtype.storm.task.OutputCollector;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.topology.IRichBolt;
  import backtype.storm.topology.IRichSpout;
  import backtype.storm.topology.OutputFieldsDeclarer;
  import backtype.storm.tuple.Fields;
  import backtype.storm.tuple.Tuple;
  import backtype.storm.tuple.Values;
  
  import com.alibaba.jstorm.transactional.TransactionTopologyBuilder;
  import com.alibaba.jstorm.transactional.bolt.ITransactionBoltExecutor;
  import com.alibaba.jstorm.transactional.spout.ITransactionSpoutExecutor;
  import com.alibaba.jstorm.transactional.state.IKvState;
  import com.alibaba.jstorm.utils.JStormUtils;
  import com.alibaba.jstorm.window.BaseWindowedBolt;
  import com.alibaba.jstorm.window.Time;
  import com.alibaba.jstorm.window.TimeWindow;
  import com.alibaba.jstorm.window.TransactionalWindowedBolt;
  import com.alibaba.starter.utils.JStormHelper;
  import com.alipay.dw.jstorm.example.performance.test.FastWordCountTopology.FastRandomSentenceSpout;
  import com.alipay.dw.jstorm.transcation.TransactionTestTopology.TxSplitSentence;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Random;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * WordCount but teh spout does not stop, and the bolts are implemented in java.
   * This can show how fast the word count can run.
   */
  public class TransactionFastWordCountWindowedState {
      private static Logger LOG = LoggerFactory.getLogger(TransactionFastWordCountWindowedState.class);
  
      public final static String TOPOLOGY_SPOUT_PARALLELISM_HINT = "spout.parallel";
      public final static String TOPOLOGY_SPLIT_PARALLELISM_HINT = "split.parallel";
      public final static String TOPOLOGY_COUNT_PARALLELISM_HINT = "count.parallel";
  
      public static class TxFastRandomSentenceSpout extends FastRandomSentenceSpout implements ITransactionSpoutExecutor {
          @Override
          public void initState(Object state) {
              if (state != null) {
                  index = (Integer) state;
              }
              LOG.info("initState, index=" + index);
          }
  
          @Override
          public Object finishBatch(long batchId) {
              return index;
          }
  
          @Override
          public void rollBack(Object state) {
              if (state != null) {
                  index = (Integer) state;
              }
              LOG.info("rollback! index=" + index);
          }
  
          @Override
          public Object commit(long batchId, Object stateData) {
              /* If any failure happened during committing, just return "fail" flag
               * return TransactionCommon.COMMIT_FAIL;
               */
              return stateData;
          }
  
          @Override
          public void ackCommit(long batchId, long ts) {
  
          }
      }
  
      public static class WordCount extends TransactionalWindowedBolt<Tuple, String, Integer> {
          private static final long serialVersionUID = 1L;
  
          transient OutputCollector collector;
  
          @Override
          public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
              this.collector = collector;
          }
  
          @Override
          public void execute(Tuple tuple, IKvState<String, Integer> state, TimeWindow window) {
              String word = (String) tuple.getValue(0);
              Integer count = state.get(word);
              if (count == null)
                  count = 0;
              state.put(word, ++count);
          }
  
          @Override
          public void purgeWindow(IKvState<String, Integer> state, TimeWindow window) {
              LOG.info("purging window: {}", window);
              LOG.info("word counts: {}", state.getBatch());
          }
  
          @Override
          public void declareOutputFields(OutputFieldsDeclarer declarer) {
              
          }
  
          @Override
          public Map<java.lang.String, Object> getComponentConfiguration() {
              return null;
          }
      }
  
      static Config conf = JStormHelper.getConfig(null);
      static boolean isLocal = true;
  
      public static void test() throws Exception {
          TransactionTopologyBuilder builder = new TransactionTopologyBuilder();
          if (isLocal) {
              conf.put("tuple.num.per.batch", 100);
              conf.put("transaction.scheduler.spout", false);
              conf.put("transaction.exactly.cache.type", "default");
              conf.put("transaction.topology", true);
          }
  
          int spoutParallelismHint = JStormUtils.parseInt(conf.get(TOPOLOGY_SPOUT_PARALLELISM_HINT), 1);
          int splitParallelismHint = JStormUtils.parseInt(conf.get(TOPOLOGY_SPLIT_PARALLELISM_HINT), 1);
          int countParallelismHint = JStormUtils.parseInt(conf.get(TOPOLOGY_COUNT_PARALLELISM_HINT), 1);
  
          builder.setSpout("spout", new TxFastRandomSentenceSpout(), spoutParallelismHint);
          builder.setBolt("split", new TxSplitSentence(), splitParallelismHint).localOrShuffleGrouping("spout");
          WordCount wordCount = new WordCount();
          builder.setBolt("count", wordCount
                          .timeWindow(Time.seconds(60L))
                          .withTransactionStateOperator(wordCount),
                  countParallelismHint).fieldsGrouping("split", new Fields("word"));
          builder.enableHdfs();
  
          String[] className = Thread.currentThread().getStackTrace()[1].getClassName().split("\\.");
          String topologyName = className[className.length - 1];
          StormSubmitter.submitTopology(topologyName, conf, builder.createTopology());
      }
  
      public static void main(String[] args) throws Exception {
          conf = JStormHelper.getConfig(args);
          test();
      }
  }
  