workbookCache.js•1.86 kB
import { getConfig } from './config.js';
class WorkbookCache {
constructor() {
this.cache = new Map();
const config = getConfig();
// 将小时转换为毫秒
this.maxAge = config.cache.maxAge * 60 * 60 * 1000;
this.cleanupInterval = config.cache.cleanupInterval * 60 * 60 * 1000;
// 创建定时器，定期清理过期缓存
setInterval(() => {
const now = Date.now();
for (const [key, item] of this.cache.entries()) {
if (now - item.timestamp > this.maxAge) {
this.delete(key);
}
}
}, this.cleanupInterval);
}
set(filePathWithName, workbook) {
this.cache.set(filePathWithName, {
workbook,
timestamp: Date.now()
});
}
get(filePathWithName) {
const item = this.cache.get(filePathWithName);
if (!item)
return undefined;
// 检查是否过期
if (Date.now() - item.timestamp > this.maxAge) {
this.delete(filePathWithName);
return undefined;
}
return item.workbook;
}
ensureWorkbook(filePathWithName) {
const workbook = this.get(filePathWithName);
if (!workbook) {
return {
success: false
};
}
return {
success: true,
data: workbook
};
}
// 删除工作簿
delete(filePathWithName) {
if (!this.cache.has(filePathWithName))
return false;
return this.cache.delete(filePathWithName);
}
// 清空缓存
clear() {
this.cache.clear();
}
// 检查是否存在
has(filePathWithName) {
return this.cache.has(filePathWithName);
}
}
export const workbookCache = new WorkbookCache();