| /* |
| * 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.opentsdb; |
| |
| import com.google.common.collect.Lists; |
| |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.Random; |
| |
| import org.apache.storm.opentsdb.bolt.TupleOpenTsdbDatapointMapper; |
| import org.apache.storm.spout.SpoutOutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.topology.OutputFieldsDeclarer; |
| import org.apache.storm.topology.base.BaseRichSpout; |
| import org.apache.storm.tuple.Fields; |
| |
| /** |
| * Spout to generate tuples containing metric data. |
| */ |
| public class MetricGenSpout extends BaseRichSpout { |
| |
| public static final Fields DEFAULT_METRIC_FIELDS = |
| new Fields(TupleOpenTsdbDatapointMapper.DEFAULT_MAPPER.getMetricField(), |
| TupleOpenTsdbDatapointMapper.DEFAULT_MAPPER.getTimestampField(), |
| TupleOpenTsdbDatapointMapper.DEFAULT_MAPPER.getValueField(), |
| TupleOpenTsdbDatapointMapper.DEFAULT_MAPPER.getTagsField()); |
| |
| private Map<String, Object> conf; |
| private TopologyContext context; |
| private SpoutOutputCollector collector; |
| |
| @Override |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| declarer.declare(DEFAULT_METRIC_FIELDS); |
| } |
| |
| @Override |
| public void open(Map<String, Object> conf, TopologyContext context, SpoutOutputCollector collector) { |
| this.conf = conf; |
| this.context = context; |
| this.collector = collector; |
| } |
| |
| @Override |
| public void nextTuple() { |
| try { |
| Thread.sleep(100); |
| } catch (InterruptedException e) { |
| // ignore |
| } |
| // tuple values are mapped with |
| // metric, timestamp, value, Map of tagK/tagV respectively. |
| collector.emit(Lists.newArrayList("device.temp", System.currentTimeMillis(), new Random().nextLong(), |
| Collections.singletonMap("loc.id", new Random().nextInt() % 64 + ""))); |
| } |
| } |