序

当使用zuul作为api网关的时候，默认的ribbon的超时设置是针对整个service的，那么如果想针对某几个url单独设置超时，该怎么办呢？

RibbonRequestCustomizer

package org.springframework.cloud.netflix.ribbon.support;import java.util.List;/** * @author Spencer Gibb */public interface RibbonRequestCustomizer {    boolean accepts(Class builderClass);    void customize(B builder);    class Runner {        @SuppressWarnings("unchecked")        public static void customize(List
     
       customizers, Object builder) {            for (RibbonRequestCustomizer customizer : customizers) {                if (customizer.accepts(builder.getClass())) {                    customizer.customize(builder);                }            }        }    }}
     

使用

@Bean    @ConditionalOnClass(name = "org.apache.http.client.methods.RequestBuilder")    public RibbonRequestCustomizer
    
      apacheHttpRibbonRequestCustomizer() {        return new ApacheHttpClientRibbonRequestCustomizer();    }
    

ApacheHttpClientRibbonRequestCustomizer

public class ApacheHttpClientRibbonRequestCustomizer implements RibbonRequestCustomizer
    
      {    @Override    public boolean accepts(Class builderClass) {        return builderClass.equals(RequestBuilder.class);    }    @Override    public void customize(RequestBuilder builder) {        URI uri = builder.getUri();        String path = uri.getPath(); //"/review/timeout"        System.out.println("request customizer uri:"+path);        RequestConfig.Builder configBuilder = builder.getConfig() == null ? RequestConfig.custom():RequestConfig.copy(builder.getConfig());        if(path.equals("/review/timeout")){            configBuilder.setConnectionRequestTimeout(30*1000);            configBuilder.setConnectTimeout(30*1000);            configBuilder.setSocketTimeout(30*1000);            builder.setConfig(configBuilder.build());        }        //todo 这里设置没有用,最后还是会被重置        //org/springframework/cloud/netflix/ribbon/apache/RibbonApacheHttpRequest.java 76        //read config    }}
    

结论

这种方式目前还不能个性化timeout参数，因为最后在RibbonApacheHttpRequest会被重置回来，但是可以添加一些header之类的。