| 1 | // Copyright Jerome Benoit. 2021. All Rights Reserved. |
| 2 | |
| 3 | import Constants from '../../utils/Constants'; |
| 4 | import { MongoClient } from 'mongodb'; |
| 5 | import Statistics from '../../types/Statistics'; |
| 6 | import { Storage } from './Storage'; |
| 7 | import { StorageType } from '../../types/Storage'; |
| 8 | |
| 9 | export class MongoDBStorage extends Storage { |
| 10 | private client: MongoClient | null; |
| 11 | private connected: boolean; |
| 12 | |
| 13 | constructor(storageURI: string, logPrefix: string) { |
| 14 | super(storageURI, logPrefix); |
| 15 | this.client = new MongoClient(this.storageURI.toString()); |
| 16 | this.connected = false; |
| 17 | this.dbName = this.storageURI.pathname.replace(/(?:^\/)|(?:\/$)/g, '') ?? Constants.DEFAULT_PERFORMANCE_RECORDS_DB_NAME; |
| 18 | } |
| 19 | |
| 20 | public async storePerformanceStatistics(performanceStatistics: Statistics): Promise<void> { |
| 21 | try { |
| 22 | this.checkDBConnection(); |
| 23 | await this.client.db(this.dbName).collection<Statistics>(Constants.PERFORMANCE_RECORDS_TABLE).insertOne(performanceStatistics); |
| 24 | } catch (error) { |
| 25 | this.handleDBError(StorageType.MONGO_DB, error, Constants.PERFORMANCE_RECORDS_TABLE); |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | public async open(): Promise<void> { |
| 30 | try { |
| 31 | if (!this.connected && this?.client) { |
| 32 | await this.client.connect(); |
| 33 | this.connected = true; |
| 34 | } |
| 35 | } catch (error) { |
| 36 | this.handleDBError(StorageType.MONGO_DB, error); |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | public async close(): Promise<void> { |
| 41 | try { |
| 42 | if (this.connected && this?.client) { |
| 43 | await this.client.close(); |
| 44 | this.connected = false; |
| 45 | } |
| 46 | } catch (error) { |
| 47 | this.handleDBError(StorageType.MONGO_DB, error); |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | private checkDBConnection() { |
| 52 | if (!this?.client) { |
| 53 | throw new Error(`${this.logPrefix} ${this.getDBNameFromStorageType(StorageType.MONGO_DB)} client initialization failed while trying to issue a request`); |
| 54 | } |
| 55 | if (!this.connected) { |
| 56 | throw new Error(`${this.logPrefix} ${this.getDBNameFromStorageType(StorageType.MONGO_DB)} connection not opened while trying to issue a request`); |
| 57 | } |
| 58 | } |
| 59 | } |