| /* |
| * 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.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Random; |
| |
| import org.apache.storm.Config; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.trident.operation.TridentCollector; |
| import org.apache.storm.trident.spout.IBatchSpout; |
| import org.apache.storm.tuple.Fields; |
| |
| /** |
| * BatchSpout implementation for metrics generation. |
| */ |
| public class MetricGenBatchSpout implements IBatchSpout { |
| |
| private int batchSize; |
| private final Map<Long, List<List<Object>>> batches = new HashMap<>(); |
| |
| public MetricGenBatchSpout(int batchSize) { |
| this.batchSize = batchSize; |
| } |
| |
| @Override |
| public void open(Map<String, Object> conf, TopologyContext context) { |
| |
| } |
| |
| @Override |
| public void emitBatch(long batchId, TridentCollector collector) { |
| List<List<Object>> values; |
| if (batches.containsKey(batchId)) { |
| values = batches.get(batchId); |
| } else { |
| values = new ArrayList<>(); |
| for (int i = 0; i < batchSize; i++) { |
| // tuple values are mapped with |
| // metric, timestamp, value, Map of tagK/tagV respectively. |
| values.add(Lists.newArrayList(Lists.newArrayList("device.temp", System.currentTimeMillis(), new Random().nextLong(), |
| Collections.singletonMap("loc.id", new Random().nextInt() % 64 + "")))); |
| } |
| batches.put(batchId, values); |
| } |
| for (List<Object> value : values) { |
| collector.emit(value); |
| } |
| |
| } |
| |
| @Override |
| public void ack(long batchId) { |
| batches.remove(batchId); |
| } |
| |
| @Override |
| public void close() { |
| |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| Config conf = new Config(); |
| conf.setMaxTaskParallelism(1); |
| return conf; |
| } |
| |
| @Override |
| public Fields getOutputFields() { |
| return MetricGenSpout.DEFAULT_METRIC_FIELDS; |
| } |
| } |