所有服务器均支持 telnet 访问,用于人工干预。
扩展接口
org.apache.dubbo.remoting.telnet.TelnetHandler
扩展配置
<dubbo:protocol telnet="xxx,yyy" />
<!-- 缺省值设置,当<dubbo:protocol>没有配置telnet属性时,使用此配置 -->
<dubbo:provider telnet="xxx,yyy" />
已知扩展
org.apache.dubbo.remoting.telnet.support.ClearTelnetHandler
org.apache.dubbo.remoting.telnet.support.ExitTelnetHandler
org.apache.dubbo.remoting.telnet.support.HelpTelnetHandler
org.apache.dubbo.remoting.telnet.support.StatusTelnetHandler
org.apache.dubbo.rpc.dubbo.telnet.ListTelnetHandler
org.apache.dubbo.rpc.dubbo.telnet.ChangeTelnetHandler
org.apache.dubbo.rpc.dubbo.telnet.CurrentTelnetHandler
org.apache.dubbo.rpc.dubbo.telnet.InvokeTelnetHandler
org.apache.dubbo.rpc.dubbo.telnet.TraceTelnetHandler
org.apache.dubbo.rpc.dubbo.telnet.CountTelnetHandler
org.apache.dubbo.rpc.dubbo.telnet.PortTelnetHandler
扩展示例
- Maven 项目结构:
src |-main |-java |-com |-xxx |-XxxTelnetHandler.java (实现TelnetHandler接口) |-resources |-META-INF |-dubbo |-org.apache.dubbo.remoting.telnet.TelnetHandler (纯文本文件,内容为:xxx=com.xxx.XxxTelnetHandler)
- XxxTelnetHandler.java:
package com.xxx; import org.apache.dubbo.remoting.telnet.TelnetHandler; @Help(parameter="...", summary="...", detail="...") public class XxxTelnetHandler implements TelnetHandler { public String telnet(Channel channel, String message) throws RemotingException { // ... } }
- META-INF/dubbo/org.apache.dubbo.remoting.telnet.TelnetHandler:
xxx=com.xxx.XxxTelnetHandler
用法
telnet 127.0.0.1 20880
dubbo> xxx args
下一节:检查服务依赖各种资源的状态,此状态检查可同时用于 telnet 的 status 命令和 hosting 的 status 页面。