Message Dispatch Extension

Extension Description

Channel information dispatcher, used to specify thread pool model.

Extension Interface

org.apache.dubbo.remoting.Dispatcher

Extension Configuration

<dubbo:protocol dispatcher="xxx" />
<!-- Default value setting. When <dubbo:protocol> does not configure the dispatcher attribute, this configuration is used -->
<dubbo:provider dispatcher="xxx" />

Known Extensions

• org.apache.dubbo.remoting.transport.dispatcher.all.AllDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.direct.DirectDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.message.MessageOnlyDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.execution.ExecutionDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.connection.ConnectionOrderedDispatcher

Extension Example

Maven project structure:

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxDispatcher.java (implements Dispatcher interface)
    |-resources
        |-META-INF
            |-dubbo
                |-org.apache.dubbo.remoting.Dispatcher (plain text file, content: xxx=com.xxx.XxxDispatcher)

XxxDispatcher.java：

package com.xxx;
 
import org.apache.dubbo.remoting.Dispatcher;
 
public class XxxDispatcher implements Dispatcher {
    public Group lookup(URL url) {
        // ...
    }
}

META-INF/dubbo/org.apache.dubbo.remoting.Dispatcher：

xxx=com.xxx.XxxDispatcher