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b4d34251 JB |
1 | // Partial Copyright Jerome Benoit. 2021. All Rights Reserved. |
2 | ||
98dc07fa | 3 | import { ChargingStationWorkerData, ChargingStationWorkerMessage, ChargingStationWorkerMessageEvents } from '../types/ChargingStationWorker'; |
81797102 | 4 | |
ded13d97 | 5 | import Configuration from '../utils/Configuration'; |
a6b3c6c3 JB |
6 | import { Storage } from '../performance/storage/Storage'; |
7 | import { StorageFactory } from '../performance/storage/StorageFactory'; | |
ded13d97 | 8 | import Utils from '../utils/Utils'; |
8244f5f0 | 9 | import WebSocketServer from './WebSocketServer'; |
fd1fdf1b | 10 | import WorkerAbstract from '../worker/WorkerAbstract'; |
ded13d97 | 11 | import WorkerFactory from '../worker/WorkerFactory'; |
8eac9a09 | 12 | import chalk from 'chalk'; |
ded13d97 | 13 | import { isMainThread } from 'worker_threads'; |
bf1866b2 | 14 | import path from 'path'; |
84e52c2c | 15 | import { version } from '../../package.json'; |
ded13d97 JB |
16 | |
17 | export default class Bootstrap { | |
535aaa27 | 18 | private static instance: Bootstrap | null = null; |
a4bc2942 | 19 | private workerImplementation: WorkerAbstract | null = null; |
8244f5f0 | 20 | private readonly webSocketServer: WebSocketServer; |
a4bc2942 JB |
21 | private readonly storage: Storage; |
22 | private numberOfChargingStations: number; | |
9e23580d | 23 | private readonly version: string = version; |
eb87fe87 | 24 | private started: boolean; |
9e23580d | 25 | private readonly workerScript: string; |
ded13d97 JB |
26 | |
27 | private constructor() { | |
eb87fe87 | 28 | this.started = false; |
07f35004 | 29 | this.workerScript = path.join(path.resolve(__dirname, '../'), 'charging-station', 'ChargingStationWorker.js'); |
8df3f0a9 | 30 | this.initWorkerImplementation(); |
8244f5f0 | 31 | this.webSocketServer = new WebSocketServer(); |
a4bc2942 | 32 | this.storage = StorageFactory.getStorage(Configuration.getPerformanceStorage().type, Configuration.getPerformanceStorage().URI, this.logPrefix()); |
7874b0b1 | 33 | Configuration.setConfigurationChangeCallback(async () => Bootstrap.getInstance().restart()); |
ded13d97 JB |
34 | } |
35 | ||
36 | public static getInstance(): Bootstrap { | |
37 | if (!Bootstrap.instance) { | |
38 | Bootstrap.instance = new Bootstrap(); | |
39 | } | |
40 | return Bootstrap.instance; | |
41 | } | |
42 | ||
43 | public async start(): Promise<void> { | |
eb87fe87 | 44 | if (isMainThread && !this.started) { |
ded13d97 | 45 | try { |
a4bc2942 JB |
46 | this.numberOfChargingStations = 0; |
47 | await this.storage.open(); | |
48 | await this.workerImplementation.start(); | |
8244f5f0 | 49 | this.webSocketServer.start(); |
ded13d97 JB |
50 | // Start ChargingStation object in worker thread |
51 | if (Configuration.getStationTemplateURLs()) { | |
52 | for (const stationURL of Configuration.getStationTemplateURLs()) { | |
53 | try { | |
c63c21bc | 54 | const nbStations = stationURL.numberOfStations ?? 0; |
ded13d97 | 55 | for (let index = 1; index <= nbStations; index++) { |
07f35004 | 56 | const workerData: ChargingStationWorkerData = { |
ded13d97 | 57 | index, |
bf1866b2 | 58 | templateFile: path.join(path.resolve(__dirname, '../'), 'assets', 'station-templates', path.basename(stationURL.file)) |
ded13d97 | 59 | }; |
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60 | await this.workerImplementation.addElement(workerData); |
61 | this.numberOfChargingStations++; | |
ded13d97 JB |
62 | } |
63 | } catch (error) { | |
8eac9a09 | 64 | console.error(chalk.red('Charging station start with template file ' + stationURL.file + ' error '), error); |
ded13d97 JB |
65 | } |
66 | } | |
67 | } else { | |
8eac9a09 | 68 | console.warn(chalk.yellow('No stationTemplateURLs defined in configuration, exiting')); |
ded13d97 | 69 | } |
a4bc2942 | 70 | if (this.numberOfChargingStations === 0) { |
8eac9a09 | 71 | console.warn(chalk.yellow('No charging station template enabled in configuration, exiting')); |
ded13d97 | 72 | } else { |
a4bc2942 | 73 | console.log(chalk.green(`Charging stations simulator ${this.version} started with ${this.numberOfChargingStations.toString()} charging station(s) and ${Utils.workerDynamicPoolInUse() ? `${Configuration.getWorkerPoolMinSize().toString()}/` : ''}${this.workerImplementation.size}${Utils.workerPoolInUse() ? `/${Configuration.getWorkerPoolMaxSize().toString()}` : ''} worker(s) concurrently running in '${Configuration.getWorkerProcess()}' mode${this.workerImplementation.maxElementsPerWorker ? ` (${this.workerImplementation.maxElementsPerWorker} charging station(s) per worker)` : ''}`)); |
ded13d97 | 74 | } |
eb87fe87 | 75 | this.started = true; |
ded13d97 | 76 | } catch (error) { |
8eac9a09 | 77 | console.error(chalk.red('Bootstrap start error '), error); |
ded13d97 | 78 | } |
b322b8b4 JB |
79 | } else { |
80 | console.error(chalk.red('Cannot start an already started charging stations simulator')); | |
ded13d97 JB |
81 | } |
82 | } | |
83 | ||
84 | public async stop(): Promise<void> { | |
eb87fe87 | 85 | if (isMainThread && this.started) { |
a4bc2942 | 86 | await this.workerImplementation.stop(); |
8244f5f0 | 87 | this.webSocketServer.stop(); |
a4bc2942 | 88 | await this.storage.close(); |
b322b8b4 JB |
89 | } else { |
90 | console.error(chalk.red('Trying to stop the charging stations simulator while not started')); | |
ded13d97 | 91 | } |
eb87fe87 | 92 | this.started = false; |
ded13d97 JB |
93 | } |
94 | ||
95 | public async restart(): Promise<void> { | |
96 | await this.stop(); | |
535aaa27 | 97 | this.initWorkerImplementation(); |
ded13d97 JB |
98 | await this.start(); |
99 | } | |
100 | ||
2a370053 | 101 | private initWorkerImplementation(): void { |
a4bc2942 | 102 | this.workerImplementation = WorkerFactory.getWorkerImplementation<ChargingStationWorkerData>(this.workerScript, Configuration.getWorkerProcess(), |
8df3f0a9 JB |
103 | { |
104 | startDelay: Configuration.getWorkerStartDelay(), | |
105 | poolMaxSize: Configuration.getWorkerPoolMaxSize(), | |
106 | poolMinSize: Configuration.getWorkerPoolMinSize(), | |
107 | elementsPerWorker: Configuration.getChargingStationsPerWorker(), | |
108 | poolOptions: { | |
109 | workerChoiceStrategy: Configuration.getWorkerPoolStrategy() | |
ffd71f2c | 110 | }, |
98dc07fa | 111 | messageHandler: async (msg: ChargingStationWorkerMessage) => { |
ee0f106b JB |
112 | if (msg.id === ChargingStationWorkerMessageEvents.STARTED) { |
113 | this.webSocketServer.webSocketServerService.chargingStations.add(msg.data.id); | |
114 | } else if (msg.id === ChargingStationWorkerMessageEvents.STOPPED) { | |
115 | this.webSocketServer.webSocketServerService.chargingStations.delete(msg.data.id); | |
116 | } else if (msg.id === ChargingStationWorkerMessageEvents.PERFORMANCE_STATISTICS) { | |
a4bc2942 | 117 | await this.storage.storePerformanceStatistics(msg.data); |
ffd71f2c | 118 | } |
81797102 | 119 | } |
535aaa27 | 120 | }); |
ded13d97 | 121 | } |
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122 | |
123 | private logPrefix(): string { | |
689dca78 | 124 | return Utils.logPrefix(' Bootstrap |'); |
81797102 | 125 | } |
ded13d97 | 126 | } |