| /** |
| * 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.hbase.topology; |
| |
| 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; |
| import backtype.storm.tuple.Values; |
| |
| import java.util.Map; |
| import java.util.Random; |
| import java.util.UUID; |
| |
| public class WordSpout implements IRichSpout { |
| boolean isDistributed; |
| SpoutOutputCollector collector; |
| public static final String[] words = new String[] { "apple", "orange", "pineapple", "banana", "watermelon" }; |
| |
| public WordSpout() { |
| this(true); |
| } |
| |
| public WordSpout(boolean isDistributed) { |
| this.isDistributed = isDistributed; |
| } |
| |
| public boolean isDistributed() { |
| return this.isDistributed; |
| } |
| |
| @SuppressWarnings("rawtypes") |
| public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) { |
| this.collector = collector; |
| } |
| |
| public void close() { |
| |
| } |
| |
| public void nextTuple() { |
| final Random rand = new Random(); |
| final String word = words[rand.nextInt(words.length)]; |
| this.collector.emit(new Values(word), UUID.randomUUID()); |
| Thread.yield(); |
| } |
| |
| public void ack(Object msgId) { |
| |
| } |
| |
| public void fail(Object msgId) { |
| |
| } |
| |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| declarer.declare(new Fields("word")); |
| } |
| |
| @Override |
| public void activate() { |
| } |
| |
| @Override |
| public void deactivate() { |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| return null; |
| } |
| } |