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调整下路由刷新的算法

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This commit is contained in:
zhangli
2025-09-01 13:59:18 +08:00
parent 132de994b1
commit 03baddbda1
2 changed files with 47 additions and 41 deletions
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2
src/main/java/com/sczx/gateway/component/DynamicRouteScheduler.java
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@ -19,7 +19,7 @@ public class DynamicRouteScheduler {
private DiscoveryClient discoveryClient;
// 延迟5秒后开始执行，避免与启动时的自动刷新冲突，每30秒刷新一次路由（可按需调整）
@Scheduled(fixedRate = 30_000, initialDelay = 5_000)
@Scheduled(fixedRate = 60_000, initialDelay = 10_000)
public void refreshRoutes() {
log.info("refreshRoutes");
publisher.publishEvent(new RefreshRoutesEvent(this));

86
src/main/java/com/sczx/gateway/config/DynamicRouteConfig.java
View File

@ -44,47 +44,53 @@ public class DynamicRouteConfig implements RouteDefinitionLocator {
@Override
public Flux<RouteDefinition> getRouteDefinitions() {
long currentTime = System.currentTimeMillis();
long lastTime = lastRefreshTime.get();
try{
long lastTime = lastRefreshTime.get();
// 防抖处理：如果距离上次刷新时间太短，则不处理
if (currentTime - lastTime < MIN_REFRESH_INTERVAL && refreshCount.get() > 0) {
log.info("刷新过于频繁，跳过本次刷新");
return Flux.empty();
}
lastRefreshTime.set(currentTime);
log.info("开始加载路由定义，第{}次调用", refreshCount.incrementAndGet());
List<RouteDefinition> routeDefinitions = new ArrayList<>();
// 定义需要路由的服务列表
String[] serviceNames = {"sczx-user", "sczx-store", "sczx-car", "sczx-order", "sczx-sync", "sczx-singlepay"};
// 为每个服务添加路由规则（如果服务存在）
for (String serviceName : serviceNames) {
if (hasServiceInstances(serviceName)) {
RouteDefinition routeDefinition = new RouteDefinition();
routeDefinition.setId(serviceName);
// 设置路径断言
routeDefinition.setPredicates(Collections.singletonList(
new PredicateDefinition("Path=/zc/" + serviceName.split("-")[1] + "/**")
));
// 设置过滤器
routeDefinition.setFilters(Collections.singletonList(
new org.springframework.cloud.gateway.filter.FilterDefinition(
"RewritePath=/zc/" + serviceName.split("-")[1] + "/(?<segment>.*), /$\\{segment}")
));
// 设置URI
routeDefinition.setUri(getServiceUri(serviceName));
routeDefinitions.add(routeDefinition);
} else {
log.warn("服务 {} 不存在实例，跳过路由配置", serviceName);
// 防抖处理：如果距离上次刷新时间太短，则不处理
if (currentTime - lastTime < MIN_REFRESH_INTERVAL && refreshCount.get() > 0) {
log.info("刷新过于频繁，跳过本次刷新");
return Flux.empty();
}
lastRefreshTime.set(currentTime);
log.info("开始加载路由定义，第{}次调用", refreshCount.incrementAndGet());
List<RouteDefinition> routeDefinitions = new ArrayList<>();
// 定义需要路由的服务列表
String[] serviceNames = {"sczx-user", "sczx-store", "sczx-car", "sczx-order", "sczx-sync", "sczx-singlepay"};
// 为每个服务添加路由规则（如果服务存在）
for (String serviceName : serviceNames) {
if (hasServiceInstances(serviceName)) {
RouteDefinition routeDefinition = new RouteDefinition();
routeDefinition.setId(serviceName);
// 设置路径断言
routeDefinition.setPredicates(Collections.singletonList(
new PredicateDefinition("Path=/zc/" + serviceName.split("-")[1] + "/**")
));
// 设置过滤器
routeDefinition.setFilters(Collections.singletonList(
new org.springframework.cloud.gateway.filter.FilterDefinition(
"RewritePath=/zc/" + serviceName.split("-")[1] + "/(?<segment>.*), /$\\{segment}")
));
// 设置URI
routeDefinition.setUri(getServiceUri(serviceName));
routeDefinitions.add(routeDefinition);
} else {
log.warn("服务 {} 不存在实例，跳过路由配置", serviceName);
}
}
log.info("路由加载完成，共加载 {} 个路由定义", routeDefinitions.size());
return Flux.fromIterable(routeDefinitions);
}catch (Exception e){
log.error("路由加载失败", e);
}
log.info("路由加载完成，共加载 {} 个路由定义", routeDefinitions.size());
return Flux.fromIterable(routeDefinitions);
return null;
}
/**
@ -114,8 +120,8 @@ public class DynamicRouteConfig implements RouteDefinitionLocator {
log.warn("No available instances for service: {}, returning default URI", serviceName);
return URI.create("http://localhost");
}
ServiceInstance selected = instances.get(Math.abs(index.getAndIncrement()) % instances.size());
int idx = index.getAndIncrement() & Integer.MAX_VALUE;
ServiceInstance selected = instances.get(idx % instances.size());
log.info("Selected instance: {}", selected);
return URI.create("http://" + selected.getHost() + ":" + selected.getPort());
}