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refactor: project
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@@ -43,8 +43,59 @@ export function truncateString(obj: any, maxLength = 500) {
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}
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return obj;
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}
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export function simpleDecorator(target: any, context: any) {
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}
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// export function CacheClassFunc(ttl: number = 3600 * 1000, customKey: string = '') {
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// const cache = new Map<string, { expiry: number; value: any }>();
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// return function CacheClassFuncDecorator(originalMethod: Function, context: ClassMethodDecoratorContext) {
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// async function CacheClassFuncDecoratorInternal(this: any, ...args: any[]) {
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// const key = `${customKey}${String(context.name)}.(${args.map(arg => JSON.stringify(arg)).join(', ')})`;
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// const cachedValue = cache.get(key);
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// if (cachedValue && cachedValue.expiry > Date.now()) {
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// return cachedValue.value;
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// }
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// const result = originalMethod.call(this, ...args);
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// cache.set(key, { expiry: Date.now() + ttl, value: result });
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// return result;
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// }
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// return CacheClassFuncDecoratorInternal;
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// }
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// }
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export function CacheClassFuncAsync(ttl: number = 3600 * 1000, customKey: string = ''): any {
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const cache = new Map<string, { expiry: number; value: any }>();
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// 注意:在JavaScript装饰器中,我们通常不直接处理ClassMethodDecoratorContext这样的类型,
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// 因为装饰器的参数通常是目标类(对于类装饰器)、属性名(对于属性装饰器)等。
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// 对于方法装饰器,我们关注的是方法本身及其描述符。
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// 但这里我们维持原逻辑,假设有一个自定义的处理上下文的方式。
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return function (originalMethod: Function): any {
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// 由于JavaScript装饰器原生不支持异步直接定义,我们保持async定义以便处理异步方法。
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async function decoratorWrapper(this: any, ...args: any[]): Promise<any> {
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const key = `${customKey}${originalMethod.name}.(${args.map(arg => JSON.stringify(arg)).join(', ')})`;
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const cachedValue = cache.get(key);
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// 遍历cache 清除expiry内容
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cache.forEach((value, key) => {
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if (value.expiry < Date.now()) {
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cache.delete(key);
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}
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});
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if (cachedValue && cachedValue.expiry > Date.now()) {
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return cachedValue.value;
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}
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// 直接await异步方法的结果
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const result = await originalMethod.apply(this, args);
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cache.set(key, { expiry: Date.now() + ttl, value: result });
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return result;
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}
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// 返回装饰后的方法,保持与原方法相同的名称和描述符(如果需要更精细的控制,可以考虑使用Object.getOwnPropertyDescriptor等)
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return decoratorWrapper;
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};
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}
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/**
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* 函数缓存装饰器,根据方法名、参数、自定义key生成缓存键,在一定时间内返回缓存结果
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