public Alert(AlertRule rule, Notification notification) {
this.rule = rule;
this.notification = notification;
}
public void check(String api, long requestCount, long errorCount, long durationOfSeconds) {
long tps = requestCount / durationOfSeconds;
if (tps > rule.getMatchedRule(api).getMaxTps()) {
notification.notify(NotificationEmergencyLevel.URGENCY, "...");
}
if (errorCount > rule.getMatchedRule(api).getMaxErrorCount()) {
notification.notify(NotificationEmergencyLevel.SEVERE, "...");
}
}
}
```
// 改动一:添加参数timeoutCount
public void check(String api, long requestCount, long errorCount, long timeoutCount, long durationOfSeconds) {
long tps = requestCount / durationOfSeconds;
if (tps > rule.getMatchedRule(api).getMaxTps()) {
notification.notify(NotificationEmergencyLevel.URGENCY, "...");
}
if (errorCount > rule.getMatchedRule(api).getMaxErrorCount()) {
notification.notify(NotificationEmergencyLevel.SEVERE, "...");
}
// 改动二:添加接口超时处理逻辑
long timeoutTps = timeoutCount / durationOfSeconds;
if (timeoutTps > rule.getMatchedRule(api).getMaxTimeoutTps()) {
notification.notify(NotificationEmergencyLevel.URGENCY, "...");
}
}
}
```
public void addAlertHandler(AlertHandler alertHandler) {
this.alertHandlers.add(alertHandler);
}
public void check(ApiStatInfo apiStatInfo) {
for (AlertHandler handler : alertHandlers) {
handler.check(apiStatInfo);
}
}
}
public class ApiStatInfo {//省略constructor/getter/setter方法
private String api;
private long requestCount;
private long errorCount;
private long durationOfSeconds;
}
public abstract class AlertHandler {
protected AlertRule rule;
protected Notification notification;
public AlertHandler(AlertRule rule, Notification notification) {
this.rule = rule;
this.notification = notification;
}
public abstract void check(ApiStatInfo apiStatInfo);
}
public class TpsAlertHandler extends AlertHandler {
public TpsAlertHandler(AlertRule rule, Notification notification) {
super(rule, notification);
}
@Override
public void check(ApiStatInfo apiStatInfo) {
long tps = apiStatInfo.getRequestCount()/ apiStatInfo.getDurationOfSeconds();
if (tps > rule.getMatchedRule(apiStatInfo.getApi()).getMaxTps()) {
notification.notify(NotificationEmergencyLevel.URGENCY, "...");
}
}
}
public class ErrorAlertHandler extends AlertHandler {
public ErrorAlertHandler(AlertRule rule, Notification notification){
super(rule, notification);
}
@Override
public void check(ApiStatInfo apiStatInfo) {
if (apiStatInfo.getErrorCount() > rule.getMatchedRule(apiStatInfo.getApi()).getMaxErrorCount()) {
notification.notify(NotificationEmergencyLevel.SEVERE, "...");
}
}
}
```
public void initializeBeans() {
alertRule = new AlertRule(/*.省略参数.*/); //省略一些初始化代码
notification = new Notification(/*.省略参数.*/); //省略一些初始化代码
alert = new Alert();
alert.addAlertHandler(new TpsAlertHandler(alertRule, notification));
alert.addAlertHandler(new ErrorAlertHandler(alertRule, notification));
}
public Alert getAlert() { return alert; }
// 饿汉式单例
private static final ApplicationContext instance = new ApplicationContext();
private ApplicationContext() {
instance.initializeBeans();
}
public static ApplicationContext getInstance() {
return instance;
}
}
public class Demo {
public static void main(String[] args) {
ApiStatInfo apiStatInfo = new ApiStatInfo();
// ...省略设置apiStatInfo数据值的代码
ApplicationContext.getInstance().getAlert().check(apiStatInfo);
}
}
```
public class ApplicationContext {
private AlertRule alertRule;
private Notification notification;
private Alert alert;
public void initializeBeans() {
alertRule = new AlertRule(/*.省略参数.*/); //省略一些初始化代码
notification = new Notification(/*.省略参数.*/); //省略一些初始化代码
alert = new Alert();
alert.addAlertHandler(new TpsAlertHandler(alertRule, notification));
alert.addAlertHandler(new ErrorAlertHandler(alertRule, notification));
// 改动三:注册handler
alert.addAlertHandler(new TimeoutAlertHandler(alertRule, notification));
}
//...省略其他未改动代码...
}
public class Demo {
public static void main(String[] args) {
ApiStatInfo apiStatInfo = new ApiStatInfo();
// ...省略apiStatInfo的set字段代码
apiStatInfo.setTimeoutCount(289); // 改动四:设置tiemoutCount值
ApplicationContext.getInstance().getAlert().check(apiStatInfo);
}
```
public interface MessageFormatter { //... }
public class JsonMessageFormatter implements MessageFormatter {//...}
public class MessageFormatter implements MessageFormatter {//...}
public class Demo {
private MessageQueue msgQueue; // 基于接口而非实现编程
public Demo(MessageQueue msgQueue) { // 依赖注入
this.msgQueue = msgQueue;
}
// msgFormatter:多态、依赖注入
public void sendNotification(Notification notification, MessageFormatter msgFormatter) {
//...
}
}
```
interface ServiceProvider{
void service(T extend User user) ;
}
class SlumDogVIPServiceProvider implements ServiceProvider{
void service(T extend User user){
// do somthing
}
}
class RealVIPServiceProvider implements ServiceProvider{
void service(T extend User user) {
// do something
}
}
```
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。