Storm-Kafka模块常用接口分析及使用方式

ZkHosts支持两种创建方式，
public ZkHosts(String brokerZkStr, String brokerZkPath)
//使用默认brokerZkPath:"/brokers"
public ZkHosts(String brokerZkStr)

public KafkaConfig(BrokerHosts hosts, String topic)
//clientId如果不想每次随机生成的话，就自己设置一个
public KafkaConfig(BrokerHosts hosts, String topic, String clientId)

        //这个地方其实就是kafka配置文件里边的zookeeper.connect这个参数，可以去那里拿过来。
        String brokerZkStr = "10.100.90.201:2181/kafka_online_sample";
        String brokerZkPath = "/brokers";
        ZkHosts zkHosts = new ZkHosts(brokerZkStr, brokerZkPath);

        String topic = "mars-wap";
        //以下：将offset汇报到哪个zk集群,相应配置
//        String offsetZkServers = "10.199.203.169";
        String offsetZkServers = "10.100.90.201";
        String offsetZkPort = "2181";
        List<String> zkServersList = new ArrayList<String>();
        zkServersList.add(offsetZkServers);
        //汇报offset信息的root路径
        String offsetZkRoot = "/stormExample";
        //存储该spout id的消费offset信息,譬如以topoName来命名
        String offsetZkId = "storm-example";


        SpoutConfig kafkaConfig = new SpoutConfig(zkHosts, topic, offsetZkRoot, offsetZkId);
        kafkaConfig.zkRoot = offsetZkRoot;
        kafkaConfig.zkPort = Integer.parseInt(offsetZkPort);
        kafkaConfig.zkServers = zkServersList;
        kafkaConfig.id = offsetZkId;
        kafkaConfig.scheme = new SchemeAsMultiScheme(new StringScheme());


        KafkaSpout spout = new KafkaSpout(kafkaConfig);

        TopologyBuilder builder = new TopologyBuilder();
        builder.setSpout("spout", spout, 1);
        builder.setBolt("bolt", new Bolt(), 1).shuffleGrouping("spout");

        Config config = new Config();

        LocalCluster cluster = new LocalCluster();
        cluster.submitTopology("test", config, builder.createTopology());

        // cluster submit.
//        try {
//            StormSubmitter.submitTopology("storm-kafka-example",config,builder.createTopology());
//        } catch (AlreadyAliveException e) {
//            e.printStackTrace();
//        } catch (InvalidTopologyException e) {
//            e.printStackTrace();
//        }