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Telnet 命令扩展

扩展说明

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