// Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
-import fs from 'node:fs';
-import path 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 { AsyncLock, AsyncLockType, Constants, Utils, handleFileException } from '../../utils';
+import {
+ AsyncLock,
+ AsyncLockType,
+ JSONStringifyWithMapSupport,
+ handleFileException,
+ isNullOrUndefined,
+} from '../../utils';
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);
public storePerformanceStatistics(performanceStatistics: Statistics): void {
this.checkPerformanceRecordsFile();
- AsyncLock.acquire(AsyncLockType.performance)
- .then(() => {
- const fileData = fs.readFileSync(this.dbName, 'utf8');
- const performanceRecords: Statistics[] = fileData
- ? (JSON.parse(fileData) as Statistics[])
- : [];
- performanceRecords.push(performanceStatistics);
- fs.writeFileSync(
- this.dbName,
- Utils.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);
- });
+ JsonFileStorage.performanceRecords.set(performanceStatistics.id, performanceStatistics);
+ AsyncLock.runExclusive(AsyncLockType.performance, () => {
+ writeSync(
+ 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 {
+ JsonFileStorage.performanceRecords = new Map<string, Statistics>();
try {
- if (Utils.isNullOrUndefined(this?.fd)) {
- if (!fs.existsSync(path.dirname(this.dbName))) {
- fs.mkdirSync(path.dirname(this.dbName), { recursive: true });
+ if (isNullOrUndefined(this?.fd)) {
+ if (!existsSync(dirname(this.dbName))) {
+ mkdirSync(dirname(this.dbName), { recursive: true });
}
- this.fd = fs.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 {
+ JsonFileStorage.performanceRecords.clear();
try {
if (this?.fd) {
- fs.closeSync(this.fd);
- 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) {
throw new BaseError(
- `${this.logPrefix} Performance records '${this.dbName}' file descriptor not found`
+ `${this.logPrefix} Performance records '${this.dbName}' file descriptor not found`,
);
}
}