Dubbo 源码阅读（六）ServiceBean

服务暴露的过程

源码

过长的源码省略了，看重点

afterPropertiesSet() -> export()

@Override
public void export() {
    super.export();
    // Publish ServiceBeanExportedEvent
    publishExportEvent();
}

跟 export：
类 ServiceConfig

public synchronized void export() {
   if (provider != null) {
       if (export == null) {
           export = provider.getExport();
       }
       if (delay == null) {
           delay = provider.getDelay();
       }
   }
   if (export != null && !export) {
       return;
   }

   if (delay != null && delay > 0) {
       delayExportExecutor.schedule(new Runnable() {
           @Override
           public void run() {
               doExport();
           }
       }, delay, TimeUnit.MILLISECONDS);
   } else {
       doExport();
   }
}

跟 doExport() -> doExportUrls()

private void doExportUrls() {
    List<URL> registryURLs = loadRegistries(true);
    //对每一个协议暴露
    for (ProtocolConfig protocolConfig : protocols) {
        doExportUrlsFor1Protocol(protocolConfig, registryURLs);
    }
}

跟 doExportUrlsFor1Protocol：

//...
//包装成服务实例                               ServiceBean的目标属性        网络协议的URL
Invoker<?> invoker = proxyFactory.getInvoker(ref, (Class) interfaceClass, registryURL.addParameterAndEncoded(Constants.EXPORT_KEY, url.toFullString()));
DelegateProviderMetaDataInvoker wrapperInvoker = new DelegateProviderMetaDataInvoker(invoker, this);
Exporter<?> exporter = protocol.export(wrapperInvoker);//暴露服务
exporters.add(exporter);
//...