697 lines
26 KiB
JavaScript
697 lines
26 KiB
JavaScript
import { Feature } from '../types/Feature';
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import { set, pull, intersection, unset, union } from 'oak-domain/lib/utils/lodash';
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import { CacheStore } from '../cacheStore/CacheStore';
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import { OakRowUnexistedException, OakException, OakUserException } from 'oak-domain/lib/types/Exception';
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import { assert } from 'oak-domain/lib/utils/assert';
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import { RelationAuth as BaseRelationAuth } from 'oak-domain/lib/store/RelationAuth';
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import { LOCAL_STORAGE_KEYS } from '../constant/constant';
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import { checkFilterContains, combineFilters } from 'oak-domain/lib/store/filter';
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const DEFAULT_KEEP_FRESH_PERIOD = 600 * 1000; // 10分钟不刷新
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;
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export class Cache extends Feature {
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cacheStore;
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syncEventsCallbacks;
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contextBuilder;
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refreshing = 0;
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savedEntities;
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keepFreshPeriod;
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localStorage;
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refreshRecords = {};
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context;
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initPromise;
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attrUpdateMatrix;
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connector;
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baseRelationAuth;
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// 缓存在某一时间戳状态下，对某行进行某个action的判断结果
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entityActionAuthDict;
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registerSelectionRewriter(rewriter) {
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this.cacheStore.registerSelectionRewriter(rewriter);
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}
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registerOperationRewriter(rewriter) {
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this.cacheStore.registerOperationRewriter(rewriter);
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}
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constructor(storageSchema, connector, frontendContextBuilder, checkers, localStorage, common) {
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super();
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this.syncEventsCallbacks = [];
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this.connector = connector;
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this.cacheStore = new CacheStore(storageSchema);
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this.contextBuilder = () => frontendContextBuilder(this.cacheStore);
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this.savedEntities = ['actionAuth', 'i18n', 'path', ...(common.cacheSavedEntities || [])];
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this.keepFreshPeriod = common.cacheKeepFreshPeriod || DEFAULT_KEEP_FRESH_PERIOD;
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this.localStorage = localStorage;
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this.attrUpdateMatrix = common.attrUpdateMatrix;
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this.baseRelationAuth = new BaseRelationAuth(storageSchema, common.authDeduceRelationMap, common.selectFreeEntities, common.updateFreeDict);
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checkers.forEach((checker) => this.cacheStore.registerChecker(checker));
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// 现在这个init变成了异步行为，不知道有没有影响。by Xc 20231126
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this.initPromise = new Promise((resolve) => this.initSavedLogic(resolve));
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this.buildEntityGraph();
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this.entityActionAuthDict = {};
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}
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/**
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* 处理cache中需要缓存的数据
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*/
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async initSavedLogic(complete) {
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const data = {};
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await Promise.all(this.savedEntities.map(async (entity) => {
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// 加载缓存的数据项
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const key = `${LOCAL_STORAGE_KEYS.cacheSaved}:${entity}`;
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const cached = await this.localStorage.load(key);
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if (cached) {
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data[entity] = cached;
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}
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// 加载缓存的时间戳项
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const key2 = `${LOCAL_STORAGE_KEYS.cacheRefreshRecord}:${entity}`;
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const cachedTs = await this.localStorage.load(key2);
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if (cachedTs) {
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this.refreshRecords[entity] = cachedTs;
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}
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}));
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this.cacheStore.resetInitialData(data);
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this.cacheStore.onCommit(async (result) => {
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const entities = Object.keys(result);
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const referenced = intersection(entities, this.savedEntities);
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if (referenced.length > 0) {
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const saved = this.cacheStore.getCurrentData(referenced);
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for (const entity in saved) {
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const key = `${LOCAL_STORAGE_KEYS.cacheSaved}:${entity}`;
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await this.localStorage.save(key, saved[entity]);
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}
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}
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});
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complete();
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}
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async onInitialized() {
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await this.initPromise;
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}
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getSchema() {
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return this.cacheStore.getSchema();
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}
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/* getCurrentUserId(allowUnloggedIn?: boolean) {
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const context = this.contextBuilder && this.contextBuilder();
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return context?.getCurrentUserId(allowUnloggedIn);
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} */
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async exec(name, params, callback, dontPublish, ignoreContext) {
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try {
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this.refreshing++;
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const { result, opRecords, message } = await this.connector.callAspect(name, params, ignoreContext ? undefined : this.context || this.contextBuilder());
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callback && callback(result, opRecords);
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if (opRecords?.length) {
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this.syncInner(opRecords);
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}
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this.refreshing--;
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if (opRecords && opRecords.length > 0 && !dontPublish) {
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this.publish();
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}
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return {
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result: result,
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message,
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};
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}
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catch (e) {
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// 如果是数据不一致错误，这里可以让用户知道
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this.refreshing--;
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if (e instanceof OakException) {
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const { opRecords } = e;
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if (opRecords.length) {
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this.syncInner(opRecords);
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this.publish();
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}
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}
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throw e;
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}
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}
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saveRefreshRecord(entity) {
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const records = this.refreshRecords[entity];
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assert(records);
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const key2 = `${LOCAL_STORAGE_KEYS.cacheRefreshRecord}:${entity}`;
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this.localStorage.save(key2, records);
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}
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addRefreshRecord(entity, key, now) {
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const originTimestamp = this.refreshRecords[entity] && this.refreshRecords[entity][key];
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if (this.refreshRecords[entity]) {
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Object.assign(this.refreshRecords[entity], {
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[key]: now,
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});
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}
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else {
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Object.assign(this.refreshRecords, {
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[entity]: {
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[key]: now,
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}
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});
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}
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if (originTimestamp) {
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return () => this.addRefreshRecord(entity, key, originTimestamp);
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}
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return () => unset(this.refreshRecords[entity], key);
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}
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/**
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* 向服务器刷新数据
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* @param entity 要刷新的实体
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* @param selection 查询映射
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* @param option 选项
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* @param callback 回调函数
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* @param refreshOption 刷新选项
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* @returns 返回查询结果
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* @description 支持增量更新，可以使用useLocalCache来将一些metadata级的数据本地缓存，减少更新次数。
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* 使用增量更新这里要注意，传入的keys如果有一个key是首次更新，会导致所有的keys全部更新。使用模块自己保证这种情况不要出现
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*/
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async refresh(entity, selection, option, callback, refreshOption) {
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// todo 还要判定没有aggregation
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const { dontPublish, useLocalCache, ignoreContext } = refreshOption || {};
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const onlyReturnFresh = refreshOption?.useLocalCache?.onlyReturnFresh;
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let undoFns = [];
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const originFilter = selection.filter;
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if (useLocalCache) {
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assert(!selection.indexFrom && !selection.count, '用cache的查询不能使用分页');
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assert(this.savedEntities.includes(entity), `${entity}不在系统设置的应缓存对象当中`);
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const { keys, gap } = useLocalCache;
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let oldest = Number.MAX_SAFE_INTEGER;
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keys.forEach((k) => {
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const last = this.refreshRecords[entity] && this.refreshRecords[entity][k];
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if (typeof last === 'number') {
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if (last < oldest) {
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oldest = last;
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}
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}
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else {
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// 说明这个key没有取过，直接赋0
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oldest = 0;
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}
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});
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const gap2 = gap || this.keepFreshPeriod;
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const now = Date.now();
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if (oldest < Number.MAX_SAFE_INTEGER && oldest > now - gap2) {
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// 说明可以用localCache的数据，不用去请求
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if (process.env.NODE_ENV === 'development') {
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// console.warn('根据keepFresh规则，省略了一次请求数据的行为', entity, selection);
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}
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if (onlyReturnFresh) {
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return {
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data: [],
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};
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}
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const data = this.get(entity, selection);
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return {
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data,
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};
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}
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else {
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if (oldest > 0) {
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// 说明key曾经都取过了，只取updateAt在oldest之后的数据
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selection.filter = selection.filter ? combineFilters(entity, this.getSchema(), [selection.filter, {
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$$updateAt$$: {
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$gte: oldest,
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}
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}]) : {
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$$updateAt$$: {
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$gte: oldest,
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}
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};
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}
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undoFns = keys.map((k) => this.addRefreshRecord(entity, k, now));
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}
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}
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try {
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const { result: { data: sr, total } } = await this.exec('select', {
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entity,
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selection,
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option,
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}, callback, dontPublish, ignoreContext);
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let filter2 = {
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id: {
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$in: Object.keys(sr),
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}
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};
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if (undoFns.length > 0 && !onlyReturnFresh) {
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filter2 = originFilter;
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}
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const selection2 = Object.assign({}, selection, {
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filter: filter2,
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// 因为id已经确定，这里不能再有indexFrom和count了
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indexFrom: undefined,
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count: undefined,
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});
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const data = this.get(entity, selection2, sr);
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if (useLocalCache) {
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this.saveRefreshRecord(entity);
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}
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return {
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data,
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total,
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};
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}
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catch (err) {
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undoFns && undoFns.forEach((fn) => fn());
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throw err;
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}
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}
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/**
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* 聚合查询
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* @param entity 实体
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* @param aggregation 聚合条件
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* @param option 选项
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* @returns 返回查询结果
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*/
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async aggregate(entity, aggregation, option) {
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const { result } = await this.connector.callAspect('aggregate', {
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entity,
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aggregation,
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option,
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}, this.context || this.contextBuilder());
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return result;
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}
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/**
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* 操作
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* @param entity 实体
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* @param operation 操作名
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* @param option 选项
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* @param callback 回调函数
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* @returns 返回操作结果
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*/
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async operate(entity, operation, option, callback) {
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const result = await this.exec('operate', {
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entity,
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operation,
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option,
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}, callback);
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return result;
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}
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async count(entity, selection, option, callback) {
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const { result } = await this.exec('count', {
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entity,
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selection,
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option,
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}, callback);
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return result;
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}
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syncInner(records) {
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this.begin();
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try {
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this.cacheStore.sync(records, this.context);
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// 同步以后，当前所有缓存的action结果都不成立了
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this.entityActionAuthDict = {};
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// 唤起同步注册的回调
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this.syncEventsCallbacks.map((ele) => ele(records));
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this.context.commit();
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this.context = undefined;
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}
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catch (err) {
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this.context.rollback();
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this.context = undefined;
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throw err;
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}
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}
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sync(records) {
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if (records.length) {
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this.syncInner(records);
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this.publish();
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}
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}
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/**
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* 前端缓存做operation只可能是测试权限，必然回滚
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* @param entity
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* @param operation
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* @returns
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*/
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tryRedoOperations(operations) {
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const rollback = this.begin();
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try {
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for (const oper of operations) {
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const { entity, operation } = oper;
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this.context.operate(entity, operation, {
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dontCollect: true,
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});
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}
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rollback();
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return true;
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}
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catch (err) {
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rollback();
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// 现在如果cache中属性缺失会报OakRowUnexistedException，待进一步细化
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if (!(err instanceof OakUserException) && !(err instanceof OakRowUnexistedException)) {
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throw err;
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}
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return err;
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}
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}
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/**
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* 根据初始化定义的attrUpdateMatrix，检查当前entity是否支持用action去更新Attrs属性
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* 返回通过合法性检查的Attrs
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* @param entity
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* @param action
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* @param attrs
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* @returns
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*/
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getLegalUpdateAttrs(entity, action, attrs, id) {
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if (!this.attrUpdateMatrix) {
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return [...attrs];
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}
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const matrix = this.attrUpdateMatrix[entity];
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if (!matrix) {
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return [...attrs];
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}
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const result = [];
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// 当前这个函数的调用一定是在reRender过程中，无需要额外处理上下文
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assert(this.context);
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// const rollback = this.begin(true);
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for (const attr of attrs) {
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const def = matrix[attr];
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if (def) {
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const { actions, filter } = def;
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if (actions && !actions.includes(action)) {
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continue;
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}
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const filter2 = typeof filter === 'function' ? filter({
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action,
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data: {
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[attr]: 'void', // 这里里面应该不会用到更新的值，这样写不要紧……
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},
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filter: { id }
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}, this.context) : filter;
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if (!filter2 || this.checkFilterContains(entity, filter2, { id }, true)) {
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result.push(attr);
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}
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}
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}
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return result;
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}
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checkOperation(entity, operation, checkerTypes, cacheInsensative) {
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// 缓存同一id对同一action的判断，避免性能低下
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const { action, data, filter } = operation;
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let id;
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let ts;
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const checkTypeString = checkerTypes ? checkerTypes.join('-') : '$$all';
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if (!cacheInsensative) {
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if (filter && !data && typeof filter.id === 'string') {
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id = filter.id;
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ts = this.cacheStore.getLastUpdateTs();
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if (this.entityActionAuthDict[ts]?.[entity]?.[id]?.[checkTypeString]?.hasOwnProperty(action)) {
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return this.entityActionAuthDict[ts][entity][id][checkTypeString][action];
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}
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}
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}
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let rollback = this.begin(true);
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try {
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this.cacheStore.check(entity, operation, this.context, checkerTypes);
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rollback && rollback();
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if (checkerTypes?.includes('relation')) {
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rollback = this.begin(true);
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this.baseRelationAuth.checkRelationSync(entity, operation, this.context);
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rollback && rollback();
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}
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if (id && ts) {
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set(this.entityActionAuthDict, `${ts}.${entity}.${id}.${checkTypeString}.${action}`, true);
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}
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return true;
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}
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catch (err) {
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rollback && rollback();
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if (err instanceof OakRowUnexistedException) {
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// 有外键缺失，尝试发一下请求
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this.fetchRows(err.getRows());
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if (id && ts) {
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set(this.entityActionAuthDict, `${ts}.${entity}.${id}.${checkTypeString}.${action}`, false);
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}
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return false;
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}
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/**
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* 这里逻辑有问题，tryExecute这个动作前，是需要把父亲结点上的动作先执行掉才有意义。
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* 后面再改，现在先容错 by Xc 20240712
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*/
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/* if (!(err instanceof OakUserException)) {
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throw err;
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} */
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if (id && ts) {
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set(this.entityActionAuthDict, `${ts}.${entity}.${id}.${checkTypeString}.${action}`, err);
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}
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return err;
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}
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}
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redoOperation(opers) {
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assert(this.context);
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opers.forEach((oper) => {
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const { entity, operation } = oper;
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this.cacheStore.operate(entity, operation, this.context, {
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checkerTypes: ['logical'], // 这里不能检查data，不然在数据没填完前会有大量异常
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dontCollect: true,
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});
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});
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return;
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}
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fetchRows(missedRows) {
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if (!this.refreshing) {
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if (process.env.NODE_ENV === 'development') {
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console.warn('缓存被动去获取数据，请查看页面行为并加以优化', missedRows);
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}
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this.exec('fetchRows', missedRows, async (result, opRecords) => {
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// missedRows理论上一定要取到，不能为空集。否则就是程序员有遗漏
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for (const record of opRecords) {
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const { d } = record;
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assert(Object.keys(d).length > 0, '在通过fetchRow取不一致数据时返回了空数据，请拿该程序员祭天。');
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for (const mr of missedRows) {
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assert(Object.keys(d[mr.entity]).length > 0, `在通过fetchRow取不一致数据时返回了空数据，请拿该程序员祭天。entity是${mr.entity}`);
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}
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}
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});
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}
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}
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getInner(entity, selection) {
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const rollback = this.begin(true);
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try {
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const result = this.cacheStore.select(entity, selection, this.context, {
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dontCollect: true,
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includedDeleted: true,
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warnWhenAttributeMiss: !this.refreshing && process.env.NODE_ENV === 'development',
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});
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rollback && rollback();
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return result;
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}
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catch (err) {
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rollback && rollback();
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if (err instanceof OakRowUnexistedException) {
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// 现在只有外键缺失会抛出RowUnexisted异常，前台在modi中连接了其它表的外键时会出现
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this.fetchRows(err.getRows());
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return [];
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}
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throw err;
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}
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}
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/**
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* 把select的结果merge到sr中，因为select有可能存在aggr数据，在这里必须要使用合并后的结果
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* sr的数据结构不好规范化描述，参见common-aspect中的select接口
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* @param entity
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* @param rows
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* @param sr
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*/
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mergeSelectResult(entity, rows, sr) {
|
||
const mergeSingleRow = (e, r, sr2) => {
|
||
for (const k in sr2) {
|
||
if (k.endsWith('$$aggr')) {
|
||
Object.assign(r, {
|
||
[k]: sr2[k],
|
||
});
|
||
}
|
||
else if (r[k]) {
|
||
const rel = this.judgeRelation(e, k);
|
||
if (rel === 2) {
|
||
mergeSingleRow(k, r[k], sr2[k]);
|
||
}
|
||
else if (typeof rel === 'string') {
|
||
mergeSingleRow(rel, r[k], sr2[k]);
|
||
}
|
||
else {
|
||
assert(rel instanceof Array);
|
||
assert(r[k] instanceof Array);
|
||
const { data } = sr2[k];
|
||
this.mergeSelectResult(rel[0], r[k], data);
|
||
}
|
||
}
|
||
}
|
||
};
|
||
const unwanted = [];
|
||
rows.forEach((row) => {
|
||
const { id } = row;
|
||
if (sr[id]) {
|
||
mergeSingleRow(entity, row, sr[id]);
|
||
}
|
||
else {
|
||
unwanted.push(row);
|
||
}
|
||
});
|
||
pull(rows, ...unwanted);
|
||
// assert(rows.length === Object.keys(sr).length);
|
||
}
|
||
get(entity, selection, sr) {
|
||
const rows = this.getInner(entity, selection);
|
||
if (sr) {
|
||
this.mergeSelectResult(entity, rows, sr);
|
||
}
|
||
return rows;
|
||
}
|
||
judgeRelation(entity, attr) {
|
||
return this.cacheStore.judgeRelation(entity, attr);
|
||
}
|
||
bindOnSync(callback) {
|
||
this.syncEventsCallbacks.push(callback);
|
||
}
|
||
unbindOnSync(callback) {
|
||
pull(this.syncEventsCallbacks, callback);
|
||
}
|
||
getCachedData() {
|
||
return this.cacheStore.getCurrentData();
|
||
}
|
||
getFullData() {
|
||
return this.connector.getFullData();
|
||
}
|
||
makeBridgeUrl(url, headers) {
|
||
return this.connector.makeBridgeUrl(url, headers);
|
||
}
|
||
begin(allowInTxn) {
|
||
if (this.context) {
|
||
assert(allowInTxn);
|
||
return;
|
||
}
|
||
this.context = this.contextBuilder();
|
||
this.context.begin();
|
||
return () => {
|
||
this.context.rollback();
|
||
this.context = undefined;
|
||
};
|
||
}
|
||
checkFilterContains(entity, contained, filter, dataCompare) {
|
||
assert(this.context);
|
||
return checkFilterContains(entity, this.context, contained, filter, dataCompare);
|
||
}
|
||
entityGraph;
|
||
buildEntityGraph() {
|
||
const schema = this.getSchema();
|
||
// 构建出一张图来
|
||
const data = [];
|
||
const links = [];
|
||
const nodeOutSet = {};
|
||
const nodeInSet = {};
|
||
const ExcludeEntities = ['modi', 'modiEntity', 'oper', 'operEntity', 'relation', 'relationAuth', 'actionAuth', 'userRelation'];
|
||
for (const entity in schema) {
|
||
if (ExcludeEntities.includes(entity)) {
|
||
continue;
|
||
}
|
||
const { attributes } = schema[entity];
|
||
for (const attr in attributes) {
|
||
const { ref } = attributes[attr];
|
||
if (ref instanceof Array) {
|
||
ref.forEach((reff) => {
|
||
if (reff === entity || ExcludeEntities.includes(reff) || nodeOutSet[entity]?.includes(reff)) {
|
||
return;
|
||
}
|
||
if (nodeInSet[reff]) {
|
||
nodeInSet[reff].push(entity);
|
||
}
|
||
else {
|
||
nodeInSet[reff] = [entity];
|
||
}
|
||
if (nodeOutSet[entity]) {
|
||
nodeOutSet[entity].push(reff);
|
||
}
|
||
else {
|
||
nodeOutSet[entity] = [reff];
|
||
}
|
||
});
|
||
}
|
||
else if (ref && ref !== entity && !ExcludeEntities.includes(ref) && !nodeOutSet[entity]?.includes(ref)) {
|
||
if (nodeInSet[ref]) {
|
||
nodeInSet[ref].push(entity);
|
||
}
|
||
else {
|
||
nodeInSet[ref] = [entity];
|
||
}
|
||
if (nodeOutSet[entity]) {
|
||
nodeOutSet[entity].push(ref);
|
||
}
|
||
else {
|
||
nodeOutSet[entity] = [ref];
|
||
}
|
||
}
|
||
}
|
||
}
|
||
// 把完全独立的对象剥离
|
||
const entities = union(Object.keys(nodeOutSet), Object.keys(nodeInSet));
|
||
entities.forEach((entity) => data.push({ name: entity }));
|
||
// link上的value代表其长度。出入度越多的结点，其关联的边的value越大，以便于上层用引力布局渲染
|
||
for (const entity in nodeOutSet) {
|
||
const fromValue = nodeOutSet[entity].length + nodeInSet[entity]?.length || 0;
|
||
for (const target of nodeOutSet[entity]) {
|
||
const toValue = nodeOutSet[target]?.length || 0 + nodeInSet[target]?.length || 0;
|
||
links.push({
|
||
source: entity,
|
||
target,
|
||
value: fromValue + toValue,
|
||
});
|
||
}
|
||
}
|
||
this.entityGraph = {
|
||
data,
|
||
links,
|
||
};
|
||
}
|
||
getEntityGraph() {
|
||
const { data, links } = this.entityGraph;
|
||
return {
|
||
data,
|
||
links,
|
||
};
|
||
}
|
||
async getRelationIdByName(entity, name, entityId) {
|
||
const filter = {
|
||
entity: entity,
|
||
name,
|
||
};
|
||
if (entityId) {
|
||
filter.$or = [
|
||
{
|
||
entityId,
|
||
},
|
||
{
|
||
entityId: {
|
||
$exists: false,
|
||
},
|
||
}
|
||
];
|
||
}
|
||
else {
|
||
filter.entityId = {
|
||
$exists: false,
|
||
};
|
||
}
|
||
const { data: relations } = await this.refresh('relation', {
|
||
data: {
|
||
id: 1,
|
||
entity: 1,
|
||
entityId: 1,
|
||
name: 1,
|
||
display: 1,
|
||
actionAuth$relation: {
|
||
$entity: 'actionAuth',
|
||
data: {
|
||
id: 1,
|
||
pathId: 1,
|
||
deActions: 1,
|
||
path: {
|
||
id: 1,
|
||
destEntity: 1,
|
||
value: 1,
|
||
sourceEntity: 1,
|
||
recursive: 1,
|
||
}
|
||
},
|
||
},
|
||
},
|
||
filter,
|
||
});
|
||
if (relations.length === 2) {
|
||
return relations.find(ele => ele.entityId).id;
|
||
}
|
||
return relations[0].id;
|
||
}
|
||
}
|