Question

我正在尝试在apache-Storm中使用并行概念。我想知道如何通过单一拓扑提交多个spout。

这是我的单一拓扑提交代码

TwitterTopologyCreator topology = new TwitterTopologyCreator();
topology.createTopology(topologyName, clientName);

Answer 1

可以有2个喷口的各种配置。我发布了一些常用的拓扑配置和2个喷口。

public class Test {    
    public static void main(String[] args) throws Exception {           
        /*
         * 
         * topology with 2 spout (configuration 1)
         * 
         * spout-1 -->
         *            |-->  bolt-1
         * spout-2 -->
         * 
         */

        TopologyBuilder configuration1=new TopologyBuilder();
        configuration1.setSpout("spout-1", new Spout1());
        configuration1.setSpout("spout-2", new Spout2());
        configuration1.setBolt("bolt-1", new Bolt1()).shuffleGrouping("spout-1").shuffleGrouping("spout-2");

        /*
         * 
         * topology with 2 spout (configuration 2)
         * 
         * spout-1 --> bolt-1
         *      
         * spout-2 --> bolt-2
         * 
         */

        TopologyBuilder configuration2=new TopologyBuilder();
        configuration2.setSpout("spout-1", new Spout1());
        configuration2.setSpout("spout-2", new Spout2());
        configuration2.setBolt("bolt-1", new Bolt1()).shuffleGrouping("spout-1");
        configuration2.setBolt("bolt-2", new Bolt2()).shuffleGrouping("spout-2");

        /*
         * 
         * topology with 2 spout (configuration 3)
         * 
         * spout-1 --> bolt-1 -->
         *                        |--> bolt-3
         * spout-2 --> bolt-2 -->
         * 
         */
        TopologyBuilder configuration3=new TopologyBuilder();
        configuration2.setSpout("spout-1", new Spout1());
        configuration2.setSpout("spout-2", new Spout2());
        configuration2.setBolt("bolt-1", new Bolt1()).shuffleGrouping("spout-1");
        configuration2.setBolt("bolt-2", new Bolt2()).shuffleGrouping("spout-2");
        configuration2.setBolt("bolt-3", new Bolt3()).shuffleGrouping("bolt-1").shuffleGrouping("bolt-2");                          
    }    
}

Answer 2

您可以通过以下方式在拓扑中使用多个喷口。

$n = 7;
$chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$res = "";
for ($i = 0; $i < $n; $i++) {
    $res .= $chars[mt_rand(0, strlen($chars)-1)];
}

如何在apache风暴中提交单个拓扑中的多个spout？

2 个答案: