Invoker Listener Extension

Invoker Listener Extension

Extension Description

This event is triggered when there is a service reference.

Extension Interface

org.apache.dubbo.rpc.InvokerListener

Extension Configuration

<!-- Reference Service Listener -->
<dubbo:reference listener="xxx,yyy" /> 
<!-- Default Listener for Reference Services -->
<dubbo:consumer listener="xxx,yyy" />

Known Extensions

org.apache.dubbo.rpc.listener.DeprecatedInvokerListener

Extension Example

Maven project structure:

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxInvokerListener.java (implements InvokerListener interface)
    |-resources
        |-META-INF
            |-dubbo
                |-org.apache.dubbo.rpc.InvokerListener (text file containing: xxx=com.xxx.XxxInvokerListener)

XxxInvokerListener.java:

package com.xxx;
import org.apache.dubbo.rpc.InvokerListener;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.RpcException;
public class XxxInvokerListener implements InvokerListener {
    public void referred(Invoker<?> invoker) throws RpcException {
        // ...
    }
    public void destroyed(Invoker<?> invoker) throws RpcException {
        // ...
    }
}

META-INF/dubbo/org.apache.dubbo.rpc.InvokerListener:

xxx=com.xxx.XxxInvokerListener

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Last modified September 30, 2024: Update & Translate Overview Docs (#3040) (d37ebceaea7)