Dubbo源码走读 - 服务本地暴露

Dubbo源码走读

流程图

• 【重点】一句话概括服务暴露流程：

Service->Invoker->Exporter

• 理论基础：
  
  • 动态代理技术
  • JDK SPI & Dubbo SPI

代码走读

1、Dubbo入口，ServiceBean#onApplicationEvent()

2、ServiceBean#export()

3、ServiceBean#doExport()

4、ServiceBean#doExportUrlsFor1Protocol()

5、ServiceBean#exportLocal()

[27/04/18 09:41:37:037 CST] main  INFO config.AbstractConfig:  [DUBBO] Export dubbo service com.alibaba.dubbo.demo.DemoService to local registry, dubbo version: 2.0.0, current host: 192.168.126.102
[27/04/18 09:41:42:042 CST] main  INFO config.AbstractConfig:  [DUBBO] Export dubbo service com.alibaba.dubbo.demo.DemoService to url dubbo://192.168.126.102:20880/com.alibaba.dubbo.demo.DemoService?anyhost=true&application=demo-provider&bind.ip=192.168.126.102&bind.port=20880&dubbo=2.0.0&generic=false&interface=com.alibaba.dubbo.demo.DemoService&methods=sayHello&pid=51129&qos.port=22222&side=provider&timestamp=1524835813911, dubbo version: 2.0.0, current host: 192.168.126.102

6、ServiceBean#doExportUrlsFor1Protocol()

[27/04/18 09:41:42:042 CST] main  INFO config.AbstractConfig:  [DUBBO] Export dubbo service com.alibaba.dubbo.demo.DemoService to url dubbo://192.168.126.102:20880/com.alibaba.dubbo.demo.DemoService?anyhost=true&application=demo-provider&bind.ip=192.168.126.102&bind.port=20880&dubbo=2.0.0&generic=false&interface=com.alibaba.dubbo.demo.DemoService&methods=sayHello&pid=51129&qos.port=22222&side=provider&timestamp=1524835813911, dubbo version: 2.0.0, current host: 192.168.126.102
[27/04/18 09:42:13:013 CST] main  INFO config.AbstractConfig:  [DUBBO] Register dubbo service com.alibaba.dubbo.demo.DemoService url dubbo://192.168.126.102:20880/com.alibaba.dubbo.demo.DemoService?anyhost=true&application=demo-provider&bind.ip=192.168.126.102&bind.port=20880&dubbo=2.0.0&generic=false&interface=com.alibaba.dubbo.demo.DemoService&methods=sayHello&pid=51129&qos.port=22222&side=provider&timestamp=1524835813911 to registry registry://224.5.6.7:1234/com.alibaba.dubbo.registry.RegistryService?application=demo-provider&dubbo=2.0.0&pid=51129&qos.port=22222&registry=multicast&timestamp=1524835801874, dubbo version: 2.0.0, current host: 192.168.126.102

7、Protocol#export()

8、AbstractServer#AbstractServer()

[27/04/18 10:12:35:035 CST] main  INFO transport.AbstractServer:  [DUBBO] Start NettyServer bind /0.0.0.0:20880, export /192.168.126.102:20880, dubbo version: 2.0.0, current host: 192.168.126.102

9、NettyServer#doOpen()