+import Configuration from './Configuration';
+import { WebSocketCloseEventStatusString } from '../types/WebSocket';
+import { WorkerProcessType } from '../types/Worker';
import { v4 as uuid } from 'uuid';
export default class Utils {
+ static logPrefix(prefixString = ''): string {
+ return new Date().toLocaleString() + prefixString;
+ }
+
static generateUUID(): string {
return uuid();
}
}
static secondsToHHMMSS(seconds: number): string {
- return new Date(seconds * 1000).toISOString().substr(11, 8);
+ return Utils.milliSecondsToHHMMSS(seconds * 1000);
}
static milliSecondsToHHMMSS(milliSeconds: number): string {
return new Date(milliSeconds).toISOString().substr(11, 8);
}
- static removeExtraEmptyLines(tab): void {
+ static removeExtraEmptyLines(tab: string[]): void {
// Start from the end
for (let i = tab.length - 1; i > 0; i--) {
// Two consecutive empty lines?
}
}
- static convertToDate(value): Date {
+ static convertToDate(value: any): Date {
// Check
if (!value) {
return value;
return value;
}
- static convertToInt(value): number {
+ static convertToInt(value: any): number {
let changedValue = value;
if (!value) {
return 0;
return changedValue;
}
- static convertToFloat(value): number {
+ static convertToFloat(value: any): number {
let changedValue = value;
if (!value) {
return 0;
return changedValue;
}
- static convertToBoolean(value): boolean {
+ static convertToBoolean(value: any): boolean {
let result = false;
// Check boolean
if (value) {
return Math.floor(Math.random() * max + 1);
}
- static roundTo(number: number, scale: number): number {
- return Utils.convertToFloat(number.toFixed(scale));
+ static roundTo(numberValue: number, scale: number): number {
+ const roundPower = Math.pow(10, scale);
+ return Math.round(numberValue * roundPower) / roundPower;
+ }
+
+ static truncTo(numberValue: number, scale: number): number {
+ const truncPower = Math.pow(10, scale);
+ return Math.trunc(numberValue * truncPower) / truncPower;
}
static getRandomFloatRounded(max: number, min = 0, scale = 2): number {
return Utils.roundTo(Utils.getRandomFloat(max), scale);
}
- static logPrefix(prefixString = ''): string {
- const date = new Date();
- return date.toLocaleString() + prefixString;
- }
-
- static objectHasOwnProperty(object, property): boolean {
- return Object.prototype.hasOwnProperty.call(object, property);
+ static getRandomFloatFluctuatedRounded(staticValue: number, fluctuationPercent: number, scale = 2): number {
+ if (fluctuationPercent === 0) {
+ return Utils.roundTo(staticValue, scale);
+ }
+ const fluctuationRatio = fluctuationPercent / 100;
+ return Utils.getRandomFloatRounded(staticValue * (1 + fluctuationRatio), staticValue * (1 - fluctuationRatio), scale);
}
- static cloneObject(object) {
- return JSON.parse(JSON.stringify(object));
+ static cloneObject<T>(object: T): T {
+ return JSON.parse(JSON.stringify(object)) as T;
}
- static isIterable(obj): boolean {
+ static isIterable<T>(obj: T): boolean {
if (obj) {
return typeof obj[Symbol.iterator] === 'function';
}
return false;
}
- static isEmptyJSon(document): boolean {
+ static isEmptyJSon(document: any): boolean {
// Empty?
if (!document) {
return true;
return Object.keys(document).length === 0;
}
- static isString(value): boolean {
+ static isString(value: any): boolean {
return typeof value === 'string';
}
- static isUndefined(value): boolean {
+ static isUndefined(value: any): boolean {
return typeof value === 'undefined';
}
- static isNullOrUndefined(value): boolean {
- // eslint-disable-next-line no-eq-null
+ static isNullOrUndefined(value: any): boolean {
+ // eslint-disable-next-line no-eq-null, eqeqeq
if (value == null) {
return true;
}
return false;
}
- static isEmptyArray(object): boolean {
+ static isEmptyArray(object: any): boolean {
if (!object) {
return true;
}
return true;
}
- static isEmptyObject(obj): boolean {
+ static isEmptyObject(obj: any): boolean {
return !Object.keys(obj).length;
}
static insertAt = (str: string, subStr: string, pos: number): string => `${str.slice(0, pos)}${subStr}${str.slice(pos)}`;
/**
- * @param {number} [retryNumber=0]
- * @return {number} - delay in milliseconds
+ * @param {number} [retryNumber=0]
+ * @returns {number} delay in milliseconds
*/
static exponentialDelay(retryNumber = 0): number {
const delay = Math.pow(2, retryNumber) * 100;
const randomSum = delay * 0.2 * Math.random(); // 0-20% of the delay
return delay + randomSum;
}
+
+ /**
+ * Convert websocket error code to human readable string message
+ *
+ * @param {number} code websocket error code
+ * @returns {string} human readable string message
+ */
+ static getWebSocketCloseEventStatusString(code: number): string {
+ if (code >= 0 && code <= 999) {
+ return '(Unused)';
+ } else if (code >= 1016) {
+ if (code <= 1999) {
+ return '(For WebSocket standard)';
+ } else if (code <= 2999) {
+ return '(For WebSocket extensions)';
+ } else if (code <= 3999) {
+ return '(For libraries and frameworks)';
+ } else if (code <= 4999) {
+ return '(For applications)';
+ }
+ }
+ if (!Utils.isUndefined(WebSocketCloseEventStatusString[code])) {
+ return WebSocketCloseEventStatusString[code] as string;
+ }
+ return '(Unknown)';
+ }
+
+ static workerPoolInUse(): boolean {
+ return [WorkerProcessType.DYNAMIC_POOL, WorkerProcessType.STATIC_POOL].includes(Configuration.getWorkerProcess());
+ }
+
+ static workerDynamicPoolInUse(): boolean {
+ return Configuration.getWorkerProcess() === WorkerProcessType.DYNAMIC_POOL;
+ }
}