| /** |
| * 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.api; |
| |
| import java.util.Map; |
| |
| import org.apache.heron.api.Config; |
| import org.apache.heron.api.HeronSubmitter; |
| import org.apache.heron.api.bolt.BaseRichBolt; |
| import org.apache.heron.api.bolt.OutputCollector; |
| import org.apache.heron.api.metric.GlobalMetrics; |
| import org.apache.heron.api.topology.OutputFieldsDeclarer; |
| import org.apache.heron.api.topology.TopologyBuilder; |
| import org.apache.heron.api.topology.TopologyContext; |
| import org.apache.heron.api.tuple.Tuple; |
| import org.apache.heron.api.utils.Utils; |
| import org.apache.heron.common.basics.ByteAmount; |
| import org.apache.heron.examples.api.spout.TestWordSpout; |
| import org.apache.heron.simulator.Simulator; |
| |
| |
| /** |
| * This is a basic example of a Storm topology. |
| */ |
| public final class ComponentConfigTopology { |
| |
| private ComponentConfigTopology() { |
| } |
| |
| public static void main(String[] args) throws Exception { |
| TopologyBuilder builder = new TopologyBuilder(); |
| |
| builder.setSpout("word", new TestWordSpout(), 2) |
| // Set rate limit to 1000 bytes per second (since parallelism is set to 2, |
| // each instance is rate limited as 500 bps). |
| .addConfiguration(Config.TOPOLOGY_COMPONENT_OUTPUT_BPS, 1000); |
| builder.setBolt("exclaim1", new ExclamationBolt(), 2) |
| .shuffleGrouping("word"); |
| |
| Config conf = new Config(); |
| conf.setDebug(true); |
| conf.setMaxSpoutPending(10); |
| |
| // component resource configuration |
| conf.setComponentCpu("word", 0.5); |
| conf.setComponentRam("word", ByteAmount.fromMegabytes(512)); |
| conf.setComponentDisk("word", ByteAmount.fromMegabytes(512)); |
| conf.setComponentCpu("exclaim1", 0.5); |
| conf.setComponentRam("exclaim1", ByteAmount.fromMegabytes(512)); |
| conf.setComponentDisk("exclaim1", ByteAmount.fromMegabytes(512)); |
| |
| // container resource configuration |
| conf.setContainerDiskRequested(ByteAmount.fromGigabytes(2)); |
| conf.setContainerRamRequested(ByteAmount.fromGigabytes(3)); |
| conf.setContainerCpuRequested(2); |
| |
| // Specify the size of RAM padding to per container. |
| // Notice, this config will be considered as a hint, |
| // and it's up to the packing algorithm to determine whether to apply this hint |
| conf.setContainerRamPadding(ByteAmount.fromGigabytes(2)); |
| |
| if (args != null && args.length > 0) { |
| conf.setNumStmgrs(2); |
| HeronSubmitter.submitTopology(args[0], conf, builder.createTopology()); |
| } else { |
| Simulator simulator = new Simulator(); |
| simulator.submitTopology("test", conf, builder.createTopology()); |
| Utils.sleep(10000); |
| simulator.killTopology("test"); |
| simulator.shutdown(); |
| } |
| } |
| |
| public static class ExclamationBolt extends BaseRichBolt { |
| private static final long serialVersionUID = 2165326630789117557L; |
| private long nItems; |
| private long startTime; |
| |
| @Override |
| @SuppressWarnings("rawtypes") |
| public void prepare( |
| Map conf, |
| TopologyContext context, |
| OutputCollector collector) { |
| nItems = 0; |
| startTime = System.currentTimeMillis(); |
| } |
| |
| @Override |
| public void execute(Tuple tuple) { |
| if (++nItems % 100000 == 0) { |
| long latency = System.currentTimeMillis() - startTime; |
| System.out.println("Bolt processed " + nItems + " tuples in " + latency + " ms"); |
| GlobalMetrics.incr("selected_items"); |
| } |
| } |
| |
| @Override |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| } |
| } |
| } |