dubbo-samples-triple/src/main/java/com/apache/dubbo/sample/basic/BizErrorCodeClientFilter.java

package com.apache.dubbo.sample.basic;

import org.apache.dubbo.common.constants.CommonConstants;
import org.apache.dubbo.common.extension.Activate;
import org.apache.dubbo.rpc.BaseFilter;
import org.apache.dubbo.rpc.Filter;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.Result;
import org.apache.dubbo.rpc.RpcException;
import org.apache.dubbo.rpc.cluster.filter.ClusterFilter;

@Activate(group = {CommonConstants.CONSUMER})
public class BizErrorCodeClientFilter implements ClusterFilter, BaseFilter.Listener {
    @Override
    public Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException {
        return invoker.invoke(invocation);
    }

    @Override
    public void onResponse(Result appResponse, Invoker<?> invoker, Invocation invocation) {
        appResponse.getObjectAttachment("biz-err-code");
    }

    @Override
    public void onError(Throwable t, Invoker<?> invoker, Invocation invocation) {
    }
}