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Example 1 with RouterChainGroup

use of com.tencent.polaris.api.plugin.compose.RouterChainGroup in project polaris-java by polarismesh.

the class BaseFlow method commonGetOneInstance.

/**
 * 通用获取单个服务实例的方法,用于SDK内部调用
 *
 * @param extensions 插件上下文
 * @param serviceKey 服务信息
 * @param coreRouterNames 核心路由插件链
 * @param lbPolicy 负载均衡策略
 * @param protocol 协议信息
 * @param hashKey 一致性hash的key
 * @return 过滤后的实例
 */
public static Instance commonGetOneInstance(Extensions extensions, ServiceKey serviceKey, List<String> coreRouterNames, String lbPolicy, String protocol, String hashKey) {
    ServiceEventKey svcEventKey = new ServiceEventKey(serviceKey, EventType.INSTANCE);
    LOG.info("[ConnectionManager]start to discover service {}", svcEventKey);
    DefaultServiceEventKeysProvider provider = new DefaultServiceEventKeysProvider();
    provider.setSvcEventKey(svcEventKey);
    // 为性能考虑,优先使用本地缓存
    provider.setUseCache(true);
    FlowControlParam flowControlParam = new DefaultFlowControlParam();
    APIConfig apiConfig = extensions.getConfiguration().getGlobal().getAPI();
    flowControlParam.setTimeoutMs(apiConfig.getTimeout());
    flowControlParam.setMaxRetry(apiConfig.getMaxRetryTimes());
    flowControlParam.setRetryIntervalMs(apiConfig.getRetryInterval());
    // 执行服务路由
    ServiceInfo dstSvcInfo = new ServiceInfo();
    Map<String, String> metadata = new HashMap<>();
    metadata.put("protocol", protocol);
    dstSvcInfo.setMetadata(metadata);
    RouteInfo routeInfo = new RouteInfo(null, null, dstSvcInfo, null, "");
    ResourcesResponse resourcesResponse = BaseFlow.syncGetResources(extensions, false, provider, flowControlParam);
    LOG.info("[ConnectionManager]success to discover service {}", svcEventKey);
    ServiceInstances serviceInstances = resourcesResponse.getServiceInstances(svcEventKey);
    RouterChainGroup sysRouterChainGroup = extensions.getSysRouterChainGroup();
    List<ServiceRouter> coreRouters = Extensions.loadServiceRouters(coreRouterNames, extensions.getPlugins(), false);
    RouterChainGroup routerChainGroup = new DefaultRouterChainGroup(sysRouterChainGroup.getBeforeRouters(), coreRouters, sysRouterChainGroup.getAfterRouters());
    ServiceInstances instancesAfterRoute = BaseFlow.processServiceRouters(routeInfo, serviceInstances, routerChainGroup);
    // 执行负载均衡
    LoadBalancer loadBalancer = (LoadBalancer) extensions.getPlugins().getPlugin(PluginTypes.LOAD_BALANCER.getBaseType(), lbPolicy);
    Criteria criteria = new Criteria();
    criteria.setHashKey(hashKey);
    return BaseFlow.processLoadBalance(loadBalancer, criteria, instancesAfterRoute);
}
Also used : ServiceRouter(com.tencent.polaris.api.plugin.route.ServiceRouter) DefaultServiceEventKeysProvider(com.tencent.polaris.api.pojo.DefaultServiceEventKeysProvider) HashMap(java.util.HashMap) LoadBalancer(com.tencent.polaris.api.plugin.loadbalance.LoadBalancer) Criteria(com.tencent.polaris.api.rpc.Criteria) ServiceInfo(com.tencent.polaris.api.pojo.ServiceInfo) ServiceInstances(com.tencent.polaris.api.pojo.ServiceInstances) APIConfig(com.tencent.polaris.api.config.global.APIConfig) DefaultRouterChainGroup(com.tencent.polaris.api.plugin.compose.DefaultRouterChainGroup) RouterChainGroup(com.tencent.polaris.api.plugin.compose.RouterChainGroup) ServiceEventKey(com.tencent.polaris.api.pojo.ServiceEventKey) RouteInfo(com.tencent.polaris.api.plugin.route.RouteInfo) DefaultRouterChainGroup(com.tencent.polaris.api.plugin.compose.DefaultRouterChainGroup)

Aggregations

APIConfig (com.tencent.polaris.api.config.global.APIConfig)1 DefaultRouterChainGroup (com.tencent.polaris.api.plugin.compose.DefaultRouterChainGroup)1 RouterChainGroup (com.tencent.polaris.api.plugin.compose.RouterChainGroup)1 LoadBalancer (com.tencent.polaris.api.plugin.loadbalance.LoadBalancer)1 RouteInfo (com.tencent.polaris.api.plugin.route.RouteInfo)1 ServiceRouter (com.tencent.polaris.api.plugin.route.ServiceRouter)1 DefaultServiceEventKeysProvider (com.tencent.polaris.api.pojo.DefaultServiceEventKeysProvider)1 ServiceEventKey (com.tencent.polaris.api.pojo.ServiceEventKey)1 ServiceInfo (com.tencent.polaris.api.pojo.ServiceInfo)1 ServiceInstances (com.tencent.polaris.api.pojo.ServiceInstances)1 Criteria (com.tencent.polaris.api.rpc.Criteria)1 HashMap (java.util.HashMap)1