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(九十一)java版spring cloud+spring bo

(九十一)java版spring cloud+spring bo

作者: IT达人Q | 来源:发表于2019-06-20 09:48 被阅读0次

    电子商务平台源码请加企鹅求求:三伍三六贰四柒二伍九。在SpringCloud Gateway中,路由定位器是查找请求连接的作用,我们通过源码看下,在SpringCloud Gateway中,路由定位器是如何工作的。

    一、RouteLocator

    SpringCloud gateway的路由定位器,包括CachingRouteLocator,CompositeRouteLocator,RouteDefinitionRouteLocator,他们的关系可以从GatewayAutoConfiguration中的代码看出,

    public RouteLocator routeDefinitionRouteLocator(GatewayProperties properties,
                                       List<GatewayFilterFactory> GatewayFilters,
                                       List<RoutePredicateFactory> predicates,
                                       RouteDefinitionLocator routeDefinitionLocator) {
      return new RouteDefinitionRouteLocator(routeDefinitionLocator, predicates, GatewayFilters, properties);
    }
    @Bean
    @Primary
    //TODO: property to disable composite?
    public RouteLocator cachedCompositeRouteLocator(List<RouteLocator> routeLocators) {
      return new CachingRouteLocator(new CompositeRouteLocator(Flux.fromIterable(routeLocators)));
    }
    

    就是CachingRouteLocator中包含了CompositeRouteLocator,CompositeRouteLocator中包含了RouteDefinitionRouteLocator类型,就是一个请求过来获取Route的入口类型就是CachingRouteLocator的getRoutes方法。同时这个类型还支持监听zk节点变更事件,刷新缓存

    二、RouteDefinitionLocator

    而RouteDefinitionRouteLocator定位器是通过RouteDefinitionLocator的RouteDefinition定位器获取定义的数据的。

    有三种类型的RouteDefinitionLocator:DiscoveryClientRouteDefinitionLocator,DiscoveryClientRoutDefinitionRepository,PropertiesRouteDefinitionLocator。

    其中,DiscoveryClientRoutDefinitionRepository使用的是DiscoveryClientRouteDefinitionLocator定位器,是从注册中心获取路由信息,PropertiesRouteDefinitionLocator是从配置文件中获取路由信息。

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