// Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
-import { closeSync, existsSync, mkdirSync, openSync, readFileSync, writeFileSync } from 'node:fs';
-import { dirname } from 'node:path';
+import { closeSync, existsSync, mkdirSync, openSync, writeSync } from 'node:fs'
+import { dirname } from 'node:path'
-import { Storage } from './Storage';
-import { BaseError } from '../../exception';
-import { FileType, type Statistics } from '../../types';
+import { Storage } from './Storage.js'
+import { BaseError } from '../../exception/index.js'
+import { FileType, type Statistics } from '../../types/index.js'
import {
AsyncLock,
AsyncLockType,
- Constants,
JSONStringifyWithMapSupport,
- handleFileException,
- isNullOrUndefined,
-} from '../../utils';
+ handleFileException
+} from '../../utils/index.js'
export class JsonFileStorage extends Storage {
- private fd: number | null = null;
+ private static performanceRecords: Map<string, Statistics>
- constructor(storageUri: string, logPrefix: string) {
- super(storageUri, logPrefix);
- this.dbName = this.storageUri.pathname;
+ private fd?: number
+
+ constructor (storageUri: string, logPrefix: string) {
+ super(storageUri, logPrefix)
+ this.dbName = this.storageUri.pathname
}
- public storePerformanceStatistics(performanceStatistics: Statistics): void {
- this.checkPerformanceRecordsFile();
- AsyncLock.acquire(AsyncLockType.performance)
- .then(() => {
- const fileData = readFileSync(this.dbName, 'utf8');
- const performanceRecords: Statistics[] = fileData
- ? (JSON.parse(fileData) as Statistics[])
- : [];
- performanceRecords.push(performanceStatistics);
- writeFileSync(this.dbName, JSONStringifyWithMapSupport(performanceRecords, 2), 'utf8');
- })
- .catch((error) => {
- handleFileException(
- this.dbName,
- FileType.PerformanceRecords,
- error as NodeJS.ErrnoException,
- this.logPrefix,
- );
- })
- .finally(() => {
- AsyncLock.release(AsyncLockType.performance).catch(Constants.EMPTY_FUNCTION);
- });
+ 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 (isNullOrUndefined(this?.fd)) {
+ if (this?.fd == null) {
if (!existsSync(dirname(this.dbName))) {
- mkdirSync(dirname(this.dbName), { recursive: true });
+ mkdirSync(dirname(this.dbName), { recursive: true })
}
- this.fd = openSync(this.dbName, 'a+');
+ this.fd = openSync(this.dbName, 'w')
}
} catch (error) {
handleFileException(
this.dbName,
FileType.PerformanceRecords,
error as NodeJS.ErrnoException,
- this.logPrefix,
- );
+ this.logPrefix
+ )
}
}
- public close(): void {
+ public close (): void {
+ JsonFileStorage.performanceRecords.clear()
try {
- if (this?.fd) {
- closeSync(this.fd);
- this.fd = null;
+ if (this?.fd != null) {
+ closeSync(this.fd)
+ delete this?.fd
}
} catch (error) {
handleFileException(
this.dbName,
FileType.PerformanceRecords,
error as NodeJS.ErrnoException,
- this.logPrefix,
- );
+ this.logPrefix
+ )
}
}
- private checkPerformanceRecordsFile(): void {
- if (!this?.fd) {
+ private checkPerformanceRecordsFile (): void {
+ if (this?.fd == null) {
throw new BaseError(
- `${this.logPrefix} Performance records '${this.dbName}' file descriptor not found`,
- );
+ `${this.logPrefix} Performance records '${this.dbName}' file descriptor not found`
+ )
}
}
}