动态指定 IP 调用

<dependency>
  <groupId>org.apache.dubbo.extensions</groupId>
  <artifactId>dubbo-cluster-specify-address-dubbo3</artifactId>
  <version>1.0.0</version>
</dependency>

<dependency>
  <groupId>org.apache.dubbo.extensions</groupId>
  <artifactId>dubbo-cluster-specify-address-dubbo2</artifactId>
  <version>1.0.0</version>
</dependency>

ReferenceConfig<DemoService> referenceConfig = new ReferenceConfig<>();
// ... init
DemoService demoService = referenceConfig.get();

// for invoke
// 1. find 10.10.10.10:20880 exist
// 2. if not exist, create a invoker to 10.10.10.10:20880 if `needToCreate` is true (only support in Dubbo 3.x's implementation)
UserSpecifiedAddressUtil.setAddress(new Address("10.10.10.10", 20880, true));
demoService.sayHello("world");


// for invoke
// 1. find 10.10.10.10:any exist
// 2. if not exist, create a invoker to 10.10.10.10:20880 if `needToCreate` is true (only support in Dubbo 3.x's implementation)
UserSpecifiedAddressUtil.setAddress(new Address("10.10.10.10", 0, true));
demoService.sayHello("world");

package org.apache.dubbo.rpc.cluster.specifyaddress;

public class Address implements Serializable {
    // ip - priority: 3
    private String ip;

    // ip+port - priority: 2
    private int port;

    // address - priority: 1
    private URL urlAddress;
    
    private boolean needToCreate = false;

    // ignore setter and getter
}

package org.apache.dubbo.rpc.cluster.specifyaddress;

public class UserSpecifiedAddressUtil {
    
    public static void setAddress(Address address) { ... }
    
}