Examples with DefaultRouterChainGroup com.tencent.polaris.api.plugin.compose.DefaultRouterChainGroup used on opensource projects

Example 1 with DefaultRouterChainGroup

use of com.tencent.polaris.api.plugin.compose.DefaultRouterChainGroup 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);
}

Example 2 with DefaultRouterChainGroup

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

the class DefaultRouterAPI method processRouters.

@Override
public ProcessRoutersResponse processRouters(ProcessRoutersRequest request) throws PolarisException {
    checkAvailable("RouterAPI");
    RouterValidator.validateProcessRouterRequest(request);
    RouterNamesGroup requestRouterGroup = request.getRouters();
    List<ServiceRouter> beforeRouters;
    if (null != requestRouterGroup && CollectionUtils.isNotEmpty(requestRouterGroup.getBeforeRouters())) {
        beforeRouters = Extensions.loadServiceRouters(requestRouterGroup.getBeforeRouters(), extensions.getPlugins(), true);
    } else {
        beforeRouters = extensions.getConfigRouterChainGroup().getBeforeRouters();
    }
    List<ServiceRouter> afterRouters;
    if (null != requestRouterGroup && CollectionUtils.isNotEmpty(requestRouterGroup.getAfterRouters())) {
        afterRouters = Extensions.loadServiceRouters(requestRouterGroup.getAfterRouters(), extensions.getPlugins(), true);
    } else {
        afterRouters = extensions.getConfigRouterChainGroup().getAfterRouters();
    }
    List<ServiceRouter> coreRouters;
    if (null != requestRouterGroup && CollectionUtils.isNotEmpty(requestRouterGroup.getCoreRouters())) {
        coreRouters = Extensions.loadServiceRouters(requestRouterGroup.getCoreRouters(), extensions.getPlugins(), true);
    } else {
        coreRouters = extensions.getConfigRouterChainGroup().getCoreRouters();
    }
    ServiceInstances dstInstances = request.getDstInstances();
    RouteInfo routeInfo = new RouteInfo(request.getSourceService(), dstInstances, request.getMethod());
    // 获取路由规则
    DefaultFlowControlParam engineFlowControlParam = new DefaultFlowControlParam();
    BaseFlow.buildFlowControlParam(request, config, engineFlowControlParam);
    Set<ServiceEventKey> routerKeys = new HashSet<>();
    ServiceEventKey dstSvcEventKey = new ServiceEventKey(new ServiceKey(dstInstances.getNamespace(), dstInstances.getService()), EventType.ROUTING);
    routerKeys.add(dstSvcEventKey);
    ServiceEventKey srcSvcEventKey = null;
    if (null != routeInfo.getSourceService() && StringUtils.isNotBlank(routeInfo.getSourceService().getNamespace()) && StringUtils.isNotBlank(routeInfo.getSourceService().getService())) {
        srcSvcEventKey = new ServiceEventKey(new ServiceKey(routeInfo.getSourceService().getNamespace(), routeInfo.getSourceService().getService()), EventType.ROUTING);
        routerKeys.add(srcSvcEventKey);
    }
    DefaultServiceEventKeysProvider svcKeysProvider = new DefaultServiceEventKeysProvider();
    svcKeysProvider.setSvcEventKeys(routerKeys);
    ResourcesResponse resourcesResponse = BaseFlow.syncGetResources(extensions, false, svcKeysProvider, engineFlowControlParam);
    routeInfo.setDestRouteRule(resourcesResponse.getServiceRule(dstSvcEventKey));
    if (null != srcSvcEventKey) {
        routeInfo.setSourceRouteRule(resourcesResponse.getServiceRule(srcSvcEventKey));
    }
    // 执行路由
    DefaultRouterChainGroup routerChainGroup = new DefaultRouterChainGroup(beforeRouters, coreRouters, afterRouters);
    ServiceInstances svcInstances = BaseFlow.processServiceRouters(routeInfo, dstInstances, routerChainGroup);
    return new ProcessRoutersResponse(svcInstances);
}