use of com.tencent.polaris.router.api.rpc.ProcessLoadBalanceResponse in project polaris-java by polarismesh.
the class RouterExample method main.
public static void main(String[] args) throws Exception {
InitResult initResult = ExampleUtils.initConsumerConfiguration(args);
String namespace = initResult.getNamespace();
String service = initResult.getService();
try (SDKContext sdkContext = SDKContext.initContext()) {
ConsumerAPI consumerAPI = DiscoveryAPIFactory.createConsumerAPIByContext(sdkContext);
RouterAPI routerAPI = RouterAPIFactory.createRouterAPIByContext(sdkContext);
// 1. 拉取全量服务实例
GetAllInstancesRequest getAllInstancesRequest = new GetAllInstancesRequest();
getAllInstancesRequest.setNamespace(namespace);
getAllInstancesRequest.setService(service);
InstancesResponse allInstanceResp = consumerAPI.getAllInstance(getAllInstancesRequest);
ServiceInstances dstInstances = allInstanceResp.toServiceInstances();
// 2. 执行服务路由
ProcessRoutersRequest processRoutersRequest = new ProcessRoutersRequest();
// 被调服务
System.out.printf("instances count before routing is %s%n", dstInstances.getInstances().size());
// 主调方信息
ServiceInfo srcSourceInfo = new ServiceInfo();
Map<String, String> labels = new HashMap<>();
labels.put("env", "test");
srcSourceInfo.setMetadata(labels);
RouterNamesGroup routerNamesGroup = new RouterNamesGroup();
List<String> coreRouters = new ArrayList<>();
coreRouters.add(ServiceRouterConfig.DEFAULT_ROUTER_RULE);
coreRouters.add(ServiceRouterConfig.DEFAULT_ROUTER_METADATA);
coreRouters.add(ServiceRouterConfig.DEFAULT_ROUTER_NEARBY);
// 设置走规则路由
routerNamesGroup.setCoreRouters(coreRouters);
processRoutersRequest.setDstInstances(dstInstances);
processRoutersRequest.setSourceService(srcSourceInfo);
processRoutersRequest.setRouters(routerNamesGroup);
ProcessRoutersResponse processRoutersResponse = routerAPI.processRouters(processRoutersRequest);
System.out.printf("instances count after routing is %s%n", processRoutersResponse.getServiceInstances().getInstances().size());
// 3. 执行负载均衡
ProcessLoadBalanceRequest processLoadBalanceRequest = new ProcessLoadBalanceRequest();
processLoadBalanceRequest.setDstInstances(processRoutersResponse.getServiceInstances());
processLoadBalanceRequest.setLbPolicy(LoadBalanceConfig.LOAD_BALANCE_WEIGHTED_RANDOM);
ProcessLoadBalanceResponse processLoadBalanceResponse = routerAPI.processLoadBalance(processLoadBalanceRequest);
System.out.printf("instances after lb is %s%n", processLoadBalanceResponse.getTargetInstance());
}
}
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