dubbo adaptive 內部適配類 $Adpative

package com.alibaba.dubbo.monitor;
import com.alibaba.dubbo.common.extension.ExtensionLoader;
public class MonitorFactory$Adpative implements com.alibaba.dubbo.monitor.MonitorFactory {
public com.alibaba.dubbo.monitor.Monitor getMonitor(com.alibaba.dubbo.common.URL arg0) {
if (arg0 == null) throw new IllegalArgumentException("url == null");
com.alibaba.dubbo.common.URL url = arg0;
String extName = ( url.getProtocol() == null ? "dubbo" : url.getProtocol() );
   System.out.println(extName );
if(extName == null) throw new IllegalStateException("Fail to get extension(com.alibaba.dubbo.monitor.MonitorFactory) name from url(" + url.toString() + ") use keys([protocol])");
com.alibaba.dubbo.monitor.MonitorFactory extension = (com.alibaba.dubbo.monitor.MonitorFactory)ExtensionLoader.getExtensionLoader(com.alibaba.dubbo.monitor.MonitorFactory.class).getExtension(extName);
return extension.getMonitor(arg0);
}
}