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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | 4x 4x 4x 4x 4x 4x 4x 56x 4x 30x 30x 30x 38x 38x 38x 38x 33x 8x 8x 8x 8x 1x 2x 5x 3x 3x 2x 2x 2x 2x 48x 48x 47x 46x 46x 46x 46x 45x 45x 41x 43x 10x 4x 10x 2x 2x 2x 2x 3x 3x 4x 3x 3x 2x 2x 2x 1x 22x 3x 2x 2x | 'use strict'; import * as _ from 'lodash'; import {asyncScheduler} from 'rxjs'; import {filter, throttleTime} from 'rxjs/operators'; import AStore from './a.store'; import EStoreType from '../enums/store.type.enum'; import observableModel from '../mongodb/functions/observable.model'; import getHrtimeAsNumber from '../functions/performance/get.hrtime.as.number'; // tslint:disable-next-line:variable-name const _getIdFromQuery = (query: any): string => (_.isString(query) ? query : _.get(query, '_id', '').toString()); export default class DocumentStore extends AStore { constructor(model: any, target: string) { super(model, target); this._type = EStoreType.DOCUMENT; Object.setPrototypeOf(this, DocumentStore.prototype); } protected extractFromConfig(): void { super.extractFromConfig(); const {skip = 0} = this._config; this._paging = skip ? {} : {skip, limit: 1}; } public restartSubscription(): void { this.subscription = observableModel(this.model) // .pipe(throttleTime(this._delay, asyncScheduler, {leading: true, trailing: true})) .pipe(filter((change) => this._pipeFilter(change))) .subscribe({ next: (change: any): void => { this.load(change) // .then((): null => null) .catch((e: any): void => this.error(e)); }, error: (e: any): void => this.error(e), complete: (): void => this.complete() }); } protected shouldReload(change: any): boolean { if (this.isInitialSubscription(change)) return true; const id: string = _getIdFromQuery(this._query); const {operationType: type, documentKey, updateDescription: description} = change; const key = _.get(documentKey, '_id', '').toString(); switch (type) { case 'delete': return true; case 'insert': return !id; case 'replace': case 'update': { if (id && id === key) return true; Iif (!description) return true; if (!this.shouldConsiderFields()) return true; const {updatedFields, removedFields} = description; const us: any[] = _.concat(removedFields, _.keys(updatedFields)); const qs: string[] = _.keys(this._fields); return !_.isEmpty(_.intersection(qs, us)); } } return false; } protected async load(change: any): Promise<void> { const startTime: number = getHrtimeAsNumber(); if (_.isEmpty(this._config)) return this.emitOne(startTime, this._subscriptionId); if (!this.shouldReload(change)) return; const id: string = _getIdFromQuery(this._query); const {operationType: type, documentKey} = change; const key = _.get(documentKey, '_id', '').toString(); if (type === 'delete' && id === key) return this.emitDelete(startTime, this._subscriptionId, key); // console.log('[@owservable] -> DB Reload Document for query:', this._query); try { let data; if (!_.isEmpty(this._sort)) data = await this._loadSortedFirstDocument(); else data = id ? await this._loadDocumentById(id) : await this._loadDocument(); if (!data) return this.emitOne(startTime, this._subscriptionId); for (const populate of this._populates) { Eif (data?.populate) await data.populate(populate); } if (_.isEmpty(this._virtuals)) return this.emitOne(startTime, this._subscriptionId, data.toJSON()); const jsonData: any = _.cloneDeep(_.omit(data.toJSON(), this._virtuals)); for (const virtual of this._virtuals) { jsonData[virtual] = await Promise.resolve(data[virtual]); } this.emitOne(startTime, this._subscriptionId, jsonData); } catch (error) { console.error('[@owservable] -> DocumentStore::load Error:', {change, error}); this.emitError(startTime, this._subscriptionId, error); } } private _pipeFilter(change: any): boolean { if (!_.isEmpty(this._sort)) return true; const {operationType: type} = change; if ('delete' === type) return true; const {documentKey, fullDocument: document} = change; const key = _.get(documentKey, '_id', '').toString(); if (key === _getIdFromQuery(this._query)) return true; return this.testDocument(document); } private async _loadDocumentById(id: string): Promise<any> { return this._model.findById(id, this._fields); } private async _loadSortedFirstDocument(): Promise<any> { const docs: any = await this._model // .find(this._query, this._fields, this._paging) // .collation({locale: 'en'}) .sort(this._sort) // @ts-ignore .setOptions({allowDiskUse: true}); return _.first(docs); } private async _loadDocument(): Promise<any> { return this._model.findOne(this._query, this._fields); } } |