| 1 | // Copyright Jerome Benoit. 2021-2023. All Rights Reserved. |
| 2 | |
| 3 | import { closeSync, existsSync, mkdirSync, openSync, writeSync } from 'node:fs'; |
| 4 | import { dirname } from 'node:path'; |
| 5 | |
| 6 | import { Storage } from './Storage'; |
| 7 | import { BaseError } from '../../exception'; |
| 8 | import { FileType, type Statistics } from '../../types'; |
| 9 | import { |
| 10 | AsyncLock, |
| 11 | AsyncLockType, |
| 12 | JSONStringifyWithMapSupport, |
| 13 | handleFileException, |
| 14 | isNullOrUndefined, |
| 15 | } from '../../utils'; |
| 16 | |
| 17 | export class JsonFileStorage extends Storage { |
| 18 | private static performanceRecords: Map<string, Statistics>; |
| 19 | |
| 20 | private fd?: number; |
| 21 | |
| 22 | constructor(storageUri: string, logPrefix: string) { |
| 23 | super(storageUri, logPrefix); |
| 24 | this.dbName = this.storageUri.pathname; |
| 25 | } |
| 26 | |
| 27 | public storePerformanceStatistics(performanceStatistics: Statistics): void { |
| 28 | this.checkPerformanceRecordsFile(); |
| 29 | JsonFileStorage.performanceRecords.set(performanceStatistics.id, performanceStatistics); |
| 30 | AsyncLock.runExclusive(AsyncLockType.performance, () => { |
| 31 | writeSync( |
| 32 | this.fd!, |
| 33 | JSONStringifyWithMapSupport([...JsonFileStorage.performanceRecords.values()], 2), |
| 34 | 0, |
| 35 | 'utf8', |
| 36 | ); |
| 37 | }).catch((error) => { |
| 38 | handleFileException( |
| 39 | this.dbName, |
| 40 | FileType.PerformanceRecords, |
| 41 | error as NodeJS.ErrnoException, |
| 42 | this.logPrefix, |
| 43 | ); |
| 44 | }); |
| 45 | } |
| 46 | |
| 47 | public open(): void { |
| 48 | JsonFileStorage.performanceRecords = new Map<string, Statistics>(); |
| 49 | try { |
| 50 | if (isNullOrUndefined(this?.fd)) { |
| 51 | if (!existsSync(dirname(this.dbName))) { |
| 52 | mkdirSync(dirname(this.dbName), { recursive: true }); |
| 53 | } |
| 54 | this.fd = openSync(this.dbName, 'w'); |
| 55 | } |
| 56 | } catch (error) { |
| 57 | handleFileException( |
| 58 | this.dbName, |
| 59 | FileType.PerformanceRecords, |
| 60 | error as NodeJS.ErrnoException, |
| 61 | this.logPrefix, |
| 62 | ); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | public close(): void { |
| 67 | JsonFileStorage.performanceRecords.clear(); |
| 68 | try { |
| 69 | if (this?.fd) { |
| 70 | closeSync(this.fd); |
| 71 | delete this?.fd; |
| 72 | } |
| 73 | } catch (error) { |
| 74 | handleFileException( |
| 75 | this.dbName, |
| 76 | FileType.PerformanceRecords, |
| 77 | error as NodeJS.ErrnoException, |
| 78 | this.logPrefix, |
| 79 | ); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | private checkPerformanceRecordsFile(): void { |
| 84 | if (!this?.fd) { |
| 85 | throw new BaseError( |
| 86 | `${this.logPrefix} Performance records '${this.dbName}' file descriptor not found`, |
| 87 | ); |
| 88 | } |
| 89 | } |
| 90 | } |