92 lines
2.8 KiB
TypeScript
92 lines
2.8 KiB
TypeScript
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import * as localForage from 'localforage';
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export interface IRequestCache {
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url: string; // 匹配 url，必填
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retry?: number; // 错误重试次数，非必填，默认为 0
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method?: 'get' | 'post' | 'put' | 'delete'; // 接口请求方法，默认为 'get'
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maxAge?: number; // 接口存储保留时间，默认为无限制
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maxRows?: number; // 接口存储规格上限配置，默认 10 条
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timeout?: number; // 前端判断接口超时时间，非必填，默认为无限制
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degradedTime?: number; // 接口熔断时间，非必填，默认为30秒
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withHeaders?: string[]; // 需要识别的 header，非必填，默认为空
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ignoreUrlParams?: string[]; // 需要忽略的 url 参数，非必填，默认为空，即会保存携带不同参数的所有url
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withBodys?: string[]; // 区分请求体不同的请求
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excludeStatusCode?: number[]; // 忽略的http状态码
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}
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export class StorageService {
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instanceName = '';
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instanceMap:any = {};
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requestCacheList: IRequestCache[] = [];
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SINGLE_SIZE_LIMIT = 1024 * 1024; //单条数据大小限制1M
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TOTAL_NUMBER_LIMIT = 200; //单数据库实例存储条数不超过200
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setRequestCacheList(requestCacheList: IRequestCache[]) {
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this.requestCacheList = requestCacheList;
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}
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getRequestCacheList() {
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return this.requestCacheList;
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}
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setInstanceName(name: string) {
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this.instanceName = name;
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}
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getInstance(name: string) {
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if (!this.instanceMap[name]) {
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this.instanceMap[name] = localForage.createInstance({
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name: `GitcodeDB_${name}`,
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storeName: `GitcodeStore_${name}`,
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});
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}
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return this.instanceMap[name];
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}
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setItem(key: string, value: any, instanceName = this.instanceName) {
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const store = this.getInstance(instanceName);
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this.chkAndCtlIntSize(store);
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store.setItem(key, value);
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}
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getItem(key: string, instanceName = this.instanceName) {
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const store = this.getInstance(instanceName);
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return store.getItem(key);
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}
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removeItem(key: string, instanceName = this.instanceName) {
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const store = this.getInstance(instanceName);
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store.removeItem(key);
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}
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// 控制数据库总条数，超过后删除最早的一条
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chkAndCtlIntSize(store: any, size = this.TOTAL_NUMBER_LIMIT) {
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store.keys().then((keys: any) => {
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const len = keys.length;
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if (len > size) {
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store.removeItem(keys[0]);
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}
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});
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}
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// 获取字符串占用存储大小
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sizeOf(str: any) {
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let total = 0;
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let charCode;
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str.split('').forEach((element: any, index: any) => {
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charCode = str.charCodeAt(index);
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if (charCode <= 0x007f) {
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total += 1;
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} else if (charCode <= 0x07ff) {
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total += 2;
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} else if (charCode <= 0xffff) {
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total += 3;
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} else {
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total += 4;
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}
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});
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return total;
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}
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}
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export const storageService = new StorageService();
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