要將Storm集成Dubbo,可以按照以下步驟進行操作:
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.7.8</version>
</dependency>
<!-- 其他依賴項 -->
</dependencies>
@Service
public class MyDubboProvider implements MyDubboService {
@Override
public String sayHello(String name) {
return "Hello, " + name;
}
}
public class MyBolt extends BaseRichBolt {
private MyDubboService dubboService;
@Override
public void prepare(Map<String, Object> topoConf, TopologyContext context, OutputCollector collector) {
// 初始化Dubbo服務引用
dubboService = DubboServiceFactory.getService(MyDubboService.class);
}
@Override
public void execute(Tuple input) {
String name = input.getString(0);
String result = dubboService.sayHello(name);
// 處理Dubbo服務返回的結果
// ...
}
// 其他方法
}
TopologyBuilder builder = new TopologyBuilder();
// 添加Dubbo服務提供者
builder.setBolt("dubboProvider", new MyDubboProviderBolt(), parallelismHint).shuffleGrouping("spout");
// 添加Dubbo服務消費者
builder.setBolt("dubboConsumer", new MyDubboConsumerBolt(), parallelismHint).shuffleGrouping("dubboProvider");
通過以上步驟,就可以在Storm中集成Dubbo,并使用Dubbo提供的服務。