| /** |
| * 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.heron.examples.eco; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Random; |
| |
| import org.apache.heron.api.Config; |
| import org.apache.heron.api.spout.BaseRichSpout; |
| import org.apache.heron.api.spout.SpoutOutputCollector; |
| import org.apache.heron.api.topology.OutputFieldsDeclarer; |
| import org.apache.heron.api.topology.TopologyContext; |
| import org.apache.heron.api.tuple.Fields; |
| import org.apache.heron.api.tuple.Values; |
| import org.apache.heron.api.utils.Utils; |
| |
| @SuppressWarnings({"serial", "HiddenField"}) |
| public class TestNameSpout extends BaseRichSpout { |
| private boolean isdistributed; |
| private SpoutOutputCollector collector; |
| |
| public TestNameSpout() { |
| this(true); |
| } |
| |
| public TestNameSpout(boolean isDistributed) { |
| isdistributed = isDistributed; |
| } |
| |
| public void open(Map<String, Object> conf, TopologyContext context, |
| SpoutOutputCollector collector) { |
| this.collector = collector; |
| } |
| |
| public void close() { |
| |
| } |
| |
| public void nextTuple() { |
| Utils.sleep(100); |
| final String[] words = new String[] {"marge", "homer", "bart", "simpson", "lisa"}; |
| final Random rand = new Random(); |
| final String word = words[rand.nextInt(words.length)]; |
| collector.emit(new Values(word)); |
| } |
| |
| public void ack(Object msgId) { |
| |
| } |
| |
| public void fail(Object msgId) { |
| |
| } |
| |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| declarer.declare(new Fields("name")); |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| if (!isdistributed) { |
| Map<String, Object> ret = new HashMap<String, Object>(); |
| ret.put(Config.TOPOLOGY_STMGRS, 1); |
| return ret; |
| } else { |
| return null; |
| } |
| } |
| } |