// Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
-import { PerformanceEntry, PerformanceObserver, performance } from 'perf_hooks';
-import type { URL } from 'url';
-import { parentPort } from 'worker_threads';
+import { type PerformanceEntry, PerformanceObserver, performance } from 'node:perf_hooks';
+import type { URL } from 'node:url';
+import { parentPort } from 'node:worker_threads';
-import { MessageChannelUtils } from '../charging-station/MessageChannelUtils';
-import { MessageType } from '../types/ocpp/MessageType';
-import type { IncomingRequestCommand, RequestCommand } from '../types/ocpp/Requests';
-import type { Statistics, TimeSeries } from '../types/Statistics';
-import { CircularArray, DEFAULT_CIRCULAR_ARRAY_SIZE } from '../utils/CircularArray';
-import Configuration from '../utils/Configuration';
-import logger from '../utils/Logger';
-import Utils from '../utils/Utils';
+import { MessageChannelUtils } from '../charging-station';
+import {
+ type IncomingRequestCommand,
+ MessageType,
+ type RequestCommand,
+ type Statistics,
+ type TimeSeries,
+} from '../types';
+import { CircularArray, Configuration, Constants, Utils, logger } from '../utils';
-export default class PerformanceStatistics {
+export class PerformanceStatistics {
private static readonly instances: Map<string, PerformanceStatistics> = new Map<
string,
PerformanceStatistics
private readonly objId: string;
private readonly objName: string;
- private performanceObserver: PerformanceObserver;
+ private performanceObserver!: PerformanceObserver;
private readonly statistics: Statistics;
- private displayInterval: NodeJS.Timeout;
+ private displayInterval!: NodeJS.Timeout;
private constructor(objId: string, objName: string, uri: URL) {
this.objId = objId;
) {
this.statistics.statisticsData.get(command).countRequest++;
} else {
- this.statistics.statisticsData.set(
- command,
- Object.assign({ countRequest: 1 }, this.statistics.statisticsData.get(command))
- );
+ this.statistics.statisticsData.set(command, {
+ ...this.statistics.statisticsData.get(command),
+ countRequest: 1,
+ });
}
break;
case MessageType.CALL_RESULT_MESSAGE:
) {
this.statistics.statisticsData.get(command).countResponse++;
} else {
- this.statistics.statisticsData.set(
- command,
- Object.assign({ countResponse: 1 }, this.statistics.statisticsData.get(command))
- );
+ this.statistics.statisticsData.set(command, {
+ ...this.statistics.statisticsData.get(command),
+ countResponse: 1,
+ });
}
break;
case MessageType.CALL_ERROR_MESSAGE:
) {
this.statistics.statisticsData.get(command).countError++;
} else {
- this.statistics.statisticsData.set(
- command,
- Object.assign({ countError: 1 }, this.statistics.statisticsData.get(command))
- );
+ this.statistics.statisticsData.set(command, {
+ ...this.statistics.statisticsData.get(command),
+ countError: 1,
+ });
}
break;
default:
}
public stop(): void {
- if (this.displayInterval) {
- clearInterval(this.displayInterval);
- }
+ this.stopLogStatisticsInterval();
performance.clearMarks();
performance.clearMeasures();
this.performanceObserver?.disconnect();
}
private initializePerformanceObserver(): void {
- this.performanceObserver = new PerformanceObserver(performanceObserverList => {
+ this.performanceObserver = new PerformanceObserver((performanceObserverList) => {
const lastPerformanceEntry = performanceObserverList.getEntries()[0];
// logger.debug(
// `${this.logPrefix()} '${lastPerformanceEntry.name}' performance entry: %j`,
}
private startLogStatisticsInterval(): void {
- if (Configuration.getLogStatisticsInterval() > 0) {
+ const logStatisticsInterval = Configuration.getLogStatisticsInterval();
+ if (logStatisticsInterval > 0 && !this.displayInterval) {
this.displayInterval = setInterval(() => {
this.logStatistics();
- }, Configuration.getLogStatisticsInterval() * 1000);
+ }, logStatisticsInterval * 1000);
logger.info(
- `${this.logPrefix()} logged every ${Utils.formatDurationSeconds(
- Configuration.getLogStatisticsInterval()
+ `${this.logPrefix()} logged every ${Utils.formatDurationSeconds(logStatisticsInterval)}`
+ );
+ } else if (this.displayInterval) {
+ logger.info(
+ `${this.logPrefix()} already logged every ${Utils.formatDurationSeconds(
+ logStatisticsInterval
)}`
);
} else {
logger.info(
- `${this.logPrefix()} log interval is set to ${Configuration.getLogStatisticsInterval().toString()}. Not logging statistics`
+ `${this.logPrefix()} log interval is set to ${logStatisticsInterval?.toString()}. Not logging statistics`
);
}
}
+ private stopLogStatisticsInterval(): void {
+ if (this.displayInterval) {
+ clearInterval(this.displayInterval);
+ delete this.displayInterval;
+ }
+ }
+
private median(dataSet: number[]): number {
if (Array.isArray(dataSet) === true && dataSet.length === 1) {
return dataSet[0];
this.statistics.statisticsData.get(entryName).avgTimeMeasurement =
this.statistics.statisticsData.get(entryName).totalTimeMeasurement /
this.statistics.statisticsData.get(entryName).countTimeMeasurement;
- Array.isArray(this.statistics.statisticsData.get(entryName).timeMeasurementSeries) === true
+ this.statistics.statisticsData.get(entryName)?.timeMeasurementSeries instanceof CircularArray
? this.statistics.statisticsData
.get(entryName)
- .timeMeasurementSeries.push({ timestamp: entry.startTime, value: entry.duration })
+ ?.timeMeasurementSeries?.push({ timestamp: entry.startTime, value: entry.duration })
: (this.statistics.statisticsData.get(entryName).timeMeasurementSeries =
- new CircularArray<TimeSeries>(DEFAULT_CIRCULAR_ARRAY_SIZE, {
+ new CircularArray<TimeSeries>(Constants.DEFAULT_CIRCULAR_BUFFER_CAPACITY, {
timestamp: entry.startTime,
value: entry.duration,
}));
)
);
if (Configuration.getPerformanceStorage().enabled) {
- parentPort.postMessage(
+ parentPort?.postMessage(
MessageChannelUtils.buildPerformanceStatisticsMessage(this.statistics)
);
}
}
private extractTimeSeriesValues(timeSeries: CircularArray<TimeSeries>): number[] {
- return timeSeries.map(timeSeriesItem => timeSeriesItem.value);
+ return timeSeries.map((timeSeriesItem) => timeSeriesItem.value);
}
- private logPrefix(): string {
+ private logPrefix = (): string => {
return Utils.logPrefix(` ${this.objName} | Performance statistics`);
- }
+ };
}