Java tutorial
/** * 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 bolt; import backtype.storm.Config; import backtype.storm.generated.GlobalStreamId; import backtype.storm.task.OutputCollector; import backtype.storm.task.TopologyContext; import backtype.storm.topology.OutputFieldsDeclarer; import backtype.storm.topology.base.BaseRichBolt; import backtype.storm.tuple.Fields; import backtype.storm.tuple.Tuple; import backtype.storm.utils.TimeCacheMap; import java.util.*; import com.bring.ducksboard.DucksboardDao; import com.bring.ducksboard.DucksboardId; import com.bring.ducksboard.DucksboardService; import org.apache.http.impl.client.DefaultHttpClient; import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.JSONValue; public class DucksBoard extends BaseRichBolt { int count = 0; DucksboardDao dao;// = new DucksboardDao(new DefaultHttpClient(), "XEmNNBQb1M8142xtoi3C20NON2VkcPLuo1FdA1HKZXQGcmh1Nn"); DucksboardService service;// = new DucksboardService(dao); DucksboardId id;// = service.createId("522245"); String idString; String keyString; public DucksBoard(String json) { Object obj = JSONValue.parse(json); JSONArray array = (JSONArray) obj; JSONObject obj2 = (JSONObject) array.get(0); this.idString = obj2.get("id").toString(); this.keyString = obj2.get("key").toString(); } @Override public void prepare(Map conf, TopologyContext context, OutputCollector collector) { dao = new DucksboardDao(new DefaultHttpClient(), keyString); service = new DucksboardService(dao); id = service.createId(idString); } @Override public void execute(Tuple tuple) { // System.out.println(tuple); count++; System.out.println(this.idString + " " + count); service.pushValue(id, count); } @Override public void declareOutputFields(OutputFieldsDeclarer ofd) { } }