| /** |
| * 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.storm.starter; |
| |
| import java.util.Map; |
| import org.apache.storm.Config; |
| import org.apache.storm.StormSubmitter; |
| import org.apache.storm.task.OutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.testing.TestWordSpout; |
| import org.apache.storm.topology.OutputFieldsDeclarer; |
| import org.apache.storm.topology.TopologyBuilder; |
| import org.apache.storm.topology.base.BaseRichBolt; |
| import org.apache.storm.tuple.Fields; |
| import org.apache.storm.tuple.Tuple; |
| import org.apache.storm.tuple.Values; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * This is a basic example of a Storm topology. |
| */ |
| public class MultipleLoggerTopology { |
| public static void main(String[] args) throws Exception { |
| TopologyBuilder builder = new TopologyBuilder(); |
| |
| builder.setSpout("word", new TestWordSpout(), 10); |
| builder.setBolt("exclaim1", new ExclamationLoggingBolt(), 3).shuffleGrouping("word"); |
| builder.setBolt("exclaim2", new ExclamationLoggingBolt(), 2).shuffleGrouping("exclaim1"); |
| |
| Config conf = new Config(); |
| conf.setDebug(true); |
| String topoName = MultipleLoggerTopology.class.getName(); |
| if (args != null && args.length > 0) { |
| topoName = args[0]; |
| } |
| conf.setNumWorkers(2); |
| StormSubmitter.submitTopologyWithProgressBar(topoName, conf, builder.createTopology()); |
| } |
| |
| public static class ExclamationLoggingBolt extends BaseRichBolt { |
| OutputCollector collector; |
| Logger rootLogger = LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME); |
| // ensure the loggers are configured in the worker.xml before |
| // trying to use them here |
| Logger logger = LoggerFactory.getLogger("com.myapp"); |
| Logger subLogger = LoggerFactory.getLogger("com.myapp.sub"); |
| |
| @Override |
| public void prepare(Map<String, Object> conf, TopologyContext context, OutputCollector collector) { |
| this.collector = collector; |
| } |
| |
| @Override |
| public void execute(Tuple tuple) { |
| rootLogger.debug("root: This is a DEBUG message"); |
| rootLogger.info("root: This is an INFO message"); |
| rootLogger.warn("root: This is a WARN message"); |
| rootLogger.error("root: This is an ERROR message"); |
| |
| logger.debug("myapp: This is a DEBUG message"); |
| logger.info("myapp: This is an INFO message"); |
| logger.warn("myapp: This is a WARN message"); |
| logger.error("myapp: This is an ERROR message"); |
| |
| subLogger.debug("myapp.sub: This is a DEBUG message"); |
| subLogger.info("myapp.sub: This is an INFO message"); |
| subLogger.warn("myapp.sub: This is a WARN message"); |
| subLogger.error("myapp.sub: This is an ERROR message"); |
| |
| collector.emit(tuple, new Values(tuple.getString(0) + "!!!")); |
| collector.ack(tuple); |
| } |
| |
| @Override |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| declarer.declare(new Fields("word")); |
| } |
| } |
| } |