-// Copyright Jerome Benoit. 2021. All Rights Reserved.
+// Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
-import fs from 'fs';
+import { closeSync, existsSync, mkdirSync, openSync, writeSync } from 'node:fs'
+import { dirname } from 'node:path'
-import lockfile from 'proper-lockfile';
-
-import { FileType } from '../../types/FileType';
-import type Statistics from '../../types/Statistics';
-import FileUtils from '../../utils/FileUtils';
-import { Storage } from './Storage';
+import { Storage } from './Storage.js'
+import { BaseError } from '../../exception/index.js'
+import { FileType, type Statistics } from '../../types/index.js'
+import {
+ AsyncLock,
+ AsyncLockType,
+ JSONStringifyWithMapSupport,
+ handleFileException
+} from '../../utils/index.js'
export class JsonFileStorage extends Storage {
- private fd: number | null = null;
+ private static performanceRecords: Map<string, Statistics>
+
+ private fd?: number
- constructor(storageUri: string, logPrefix: string) {
- super(storageUri, logPrefix);
- this.dbName = this.storageUri.pathname;
+ constructor (storageUri: string, logPrefix: string) {
+ super(storageUri, logPrefix)
+ this.dbName = this.storageUri.pathname
}
- public storePerformanceStatistics(performanceStatistics: Statistics): void {
- this.checkPerformanceRecordsFile();
- lockfile
- .lock(this.dbName, { stale: 5000, retries: 3 })
- .then(async (release) => {
- try {
- const fileData = fs.readFileSync(this.dbName, 'utf8');
- const performanceRecords: Statistics[] = fileData
- ? (JSON.parse(fileData) as Statistics[])
- : [];
- performanceRecords.push(performanceStatistics);
- fs.writeFileSync(
- this.dbName,
- JSON.stringify(
- performanceRecords,
- (key, value) => {
- if (value instanceof Map) {
- return {
- dataType: 'Map',
- value: [...value],
- };
- }
- return value as Statistics;
- },
- 2
- ),
- 'utf8'
- );
- } catch (error) {
- FileUtils.handleFileException(
- this.logPrefix,
- FileType.PerformanceRecords,
- this.dbName,
- error as NodeJS.ErrnoException
- );
- }
- await release();
- })
- .catch(() => {
- /* This is intentional */
- });
+ public storePerformanceStatistics (performanceStatistics: Statistics): void {
+ this.checkPerformanceRecordsFile()
+ JsonFileStorage.performanceRecords.set(performanceStatistics.id, performanceStatistics)
+ AsyncLock.runExclusive(AsyncLockType.performance, () => {
+ writeSync(
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ this.fd!,
+ JSONStringifyWithMapSupport([...JsonFileStorage.performanceRecords.values()], 2),
+ 0,
+ 'utf8'
+ )
+ }).catch((error) => {
+ handleFileException(
+ this.dbName,
+ FileType.PerformanceRecords,
+ error as NodeJS.ErrnoException,
+ this.logPrefix
+ )
+ })
}
- public open(): void {
+ public open (): void {
+ JsonFileStorage.performanceRecords = new Map<string, Statistics>()
try {
- if (!this?.fd) {
- this.fd = fs.openSync(this.dbName, 'a+');
+ if (this?.fd == null) {
+ if (!existsSync(dirname(this.dbName))) {
+ mkdirSync(dirname(this.dbName), { recursive: true })
+ }
+ this.fd = openSync(this.dbName, 'w')
}
} catch (error) {
- FileUtils.handleFileException(
- this.logPrefix,
- FileType.PerformanceRecords,
+ handleFileException(
this.dbName,
- error as NodeJS.ErrnoException
- );
+ FileType.PerformanceRecords,
+ error as NodeJS.ErrnoException,
+ this.logPrefix
+ )
}
}
- public close(): void {
+ public close (): void {
+ JsonFileStorage.performanceRecords.clear()
try {
- if (this?.fd) {
- fs.closeSync(this.fd);
- this.fd = null;
+ if (this?.fd != null) {
+ closeSync(this.fd)
+ delete this?.fd
}
} catch (error) {
- FileUtils.handleFileException(
- this.logPrefix,
- FileType.PerformanceRecords,
+ handleFileException(
this.dbName,
- error as NodeJS.ErrnoException
- );
+ FileType.PerformanceRecords,
+ error as NodeJS.ErrnoException,
+ this.logPrefix
+ )
}
}
- private checkPerformanceRecordsFile(): void {
- if (!this?.fd) {
- throw new Error(
+ private checkPerformanceRecordsFile (): void {
+ if (this?.fd == null) {
+ throw new BaseError(
`${this.logPrefix} Performance records '${this.dbName}' file descriptor not found`
- );
+ )
}
}
}