Custom router

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Update time: 2024-04-10

The route service address in SOFARPC is abstracted into a processing chain, and is processed by each router. Like filter, SOFARPC provides the same extensibility for router.

@Extension(value = "customerRouter")
@AutoActive(consumerSide = true)
public class CustomerRouter extends Router {
   
    @Override
    public void init(ConsumerBootstrap consumerBootstrap) {
        
    }
    @Override
    public boolean needToLoad(ConsumerBootstrap consumerBootstrap) {
       return true;
    }
    @Override
    public List<ProviderInfo> route(SofaRequest request, List<ProviderInfo> providerInfos) {
        return providerInfos;
    }

Create a extension file META-INF/services/sofa-rpc/com.alipay.sofa.rpc.client.Router with the following content:

customerRouter=com.alipay.sofa.rpc.custom.CustomRouter

This file customized a CustomerRouter, which takes effect in all consumers. The parameter ConsumerBootstrap in init method is a wrapper class of the referenced service, and can get objects such as ConsumerConfig, proxy class, and service address pool. needToLoad indicates whether the Router is valid, and the route method is the method for filtering addresses.