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1 | // Partial Copyright Jerome Benoit. 2021. All Rights Reserved. |
2 | ||
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3 | import { |
4 | ChargingStationWorkerData, | |
5 | ChargingStationWorkerMessage, | |
6 | ChargingStationWorkerMessageEvents, | |
7 | } from '../types/ChargingStationWorker'; | |
81797102 | 8 | |
ded13d97 | 9 | import Configuration from '../utils/Configuration'; |
717c1e56 | 10 | import { StationTemplateUrl } from '../types/ConfigurationData'; |
c3ee95af | 11 | import Statistics from '../types/Statistics'; |
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12 | import { Storage } from '../performance/storage/Storage'; |
13 | import { StorageFactory } from '../performance/storage/StorageFactory'; | |
383cb2ae | 14 | import { UIServiceUtils } from './ui-websocket-services/UIServiceUtils'; |
4198ad5c | 15 | import UIWebSocketServer from './UIWebSocketServer'; |
ded13d97 | 16 | import Utils from '../utils/Utils'; |
fd1fdf1b | 17 | import WorkerAbstract from '../worker/WorkerAbstract'; |
ded13d97 | 18 | import WorkerFactory from '../worker/WorkerFactory'; |
8eac9a09 | 19 | import chalk from 'chalk'; |
ded13d97 | 20 | import { isMainThread } from 'worker_threads'; |
bf1866b2 | 21 | import path from 'path'; |
84e52c2c | 22 | import { version } from '../../package.json'; |
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23 | |
24 | export default class Bootstrap { | |
535aaa27 | 25 | private static instance: Bootstrap | null = null; |
c3ee95af | 26 | private workerImplementation: WorkerAbstract<ChargingStationWorkerData> | null = null; |
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27 | private readonly uiWebSocketServer!: UIWebSocketServer; |
28 | private readonly storage!: Storage; | |
a4bc2942 | 29 | private numberOfChargingStations: number; |
9e23580d | 30 | private readonly version: string = version; |
eb87fe87 | 31 | private started: boolean; |
9e23580d | 32 | private readonly workerScript: string; |
ded13d97 JB |
33 | |
34 | private constructor() { | |
eb87fe87 | 35 | this.started = false; |
e7aeea18 | 36 | this.workerScript = path.join( |
6fee1791 | 37 | path.resolve(__dirname, '../'), // wouldn't path.resolve(./ChargingStationWorker.js) achieve the same result ? |
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38 | 'charging-station', |
39 | 'ChargingStationWorker.js' | |
40 | ); | |
6fee1791 H |
41 | this.initWorkerImplementation(); |
42 | Configuration.getUIWebSocketServer().enabled && | |
e7aeea18 JB |
43 | (this.uiWebSocketServer = new UIWebSocketServer({ |
44 | ...Configuration.getUIWebSocketServer().options, | |
45 | handleProtocols: UIServiceUtils.handleProtocols, | |
46 | })); | |
6fee1791 | 47 | Configuration.getPerformanceStorage().enabled && |
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48 | (this.storage = StorageFactory.getStorage( |
49 | Configuration.getPerformanceStorage().type, | |
50 | Configuration.getPerformanceStorage().uri, | |
51 | this.logPrefix() | |
52 | )); | |
7874b0b1 | 53 | Configuration.setConfigurationChangeCallback(async () => Bootstrap.getInstance().restart()); |
ded13d97 JB |
54 | } |
55 | ||
56 | public static getInstance(): Bootstrap { | |
57 | if (!Bootstrap.instance) { | |
58 | Bootstrap.instance = new Bootstrap(); | |
59 | } | |
60 | return Bootstrap.instance; | |
61 | } | |
62 | ||
63 | public async start(): Promise<void> { | |
eb87fe87 | 64 | if (isMainThread && !this.started) { |
ded13d97 | 65 | try { |
a4bc2942 | 66 | this.numberOfChargingStations = 0; |
6a49ad23 | 67 | await this.storage?.open(); |
a4bc2942 | 68 | await this.workerImplementation.start(); |
6a49ad23 | 69 | this.uiWebSocketServer?.start(); |
1f5df42a | 70 | const stationTemplateUrls = Configuration.getStationTemplateUrls(); |
ded13d97 | 71 | // Start ChargingStation object in worker thread |
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72 | if (stationTemplateUrls) { |
73 | for (const stationTemplateUrl of stationTemplateUrls) { | |
ded13d97 | 74 | try { |
1f5df42a | 75 | const nbStations = stationTemplateUrl.numberOfStations ?? 0; |
ded13d97 | 76 | for (let index = 1; index <= nbStations; index++) { |
717c1e56 | 77 | await this.startChargingStation(index, stationTemplateUrl); |
ded13d97 JB |
78 | } |
79 | } catch (error) { | |
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80 | console.error( |
81 | chalk.red( | |
82 | 'Charging station start with template file ' + stationTemplateUrl.file + ' error ' | |
83 | ), | |
84 | error | |
85 | ); | |
ded13d97 JB |
86 | } |
87 | } | |
88 | } else { | |
1f5df42a | 89 | console.warn(chalk.yellow('No stationTemplateUrls defined in configuration, exiting')); |
ded13d97 | 90 | } |
a4bc2942 | 91 | if (this.numberOfChargingStations === 0) { |
e7aeea18 JB |
92 | console.warn( |
93 | chalk.yellow('No charging station template enabled in configuration, exiting') | |
94 | ); | |
ded13d97 | 95 | } else { |
e7aeea18 JB |
96 | console.log( |
97 | chalk.green( | |
98 | `Charging stations simulator ${ | |
99 | this.version | |
100 | } started with ${this.numberOfChargingStations.toString()} charging station(s) and ${ | |
101 | Utils.workerDynamicPoolInUse() | |
102 | ? `${Configuration.getWorkerPoolMinSize().toString()}/` | |
103 | : '' | |
104 | }${this.workerImplementation.size}${ | |
105 | Utils.workerPoolInUse() ? `/${Configuration.getWorkerPoolMaxSize().toString()}` : '' | |
106 | } worker(s) concurrently running in '${Configuration.getWorkerProcess()}' mode${ | |
107 | this.workerImplementation.maxElementsPerWorker | |
108 | ? ` (${this.workerImplementation.maxElementsPerWorker} charging station(s) per worker)` | |
109 | : '' | |
110 | }` | |
111 | ) | |
112 | ); | |
ded13d97 | 113 | } |
eb87fe87 | 114 | this.started = true; |
ded13d97 | 115 | } catch (error) { |
8eac9a09 | 116 | console.error(chalk.red('Bootstrap start error '), error); |
ded13d97 | 117 | } |
b322b8b4 JB |
118 | } else { |
119 | console.error(chalk.red('Cannot start an already started charging stations simulator')); | |
ded13d97 JB |
120 | } |
121 | } | |
122 | ||
123 | public async stop(): Promise<void> { | |
eb87fe87 | 124 | if (isMainThread && this.started) { |
a4bc2942 | 125 | await this.workerImplementation.stop(); |
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126 | this.uiWebSocketServer?.stop(); |
127 | await this.storage?.close(); | |
b322b8b4 JB |
128 | } else { |
129 | console.error(chalk.red('Trying to stop the charging stations simulator while not started')); | |
ded13d97 | 130 | } |
eb87fe87 | 131 | this.started = false; |
ded13d97 JB |
132 | } |
133 | ||
134 | public async restart(): Promise<void> { | |
135 | await this.stop(); | |
535aaa27 | 136 | this.initWorkerImplementation(); |
ded13d97 JB |
137 | await this.start(); |
138 | } | |
139 | ||
2a370053 | 140 | private initWorkerImplementation(): void { |
e7aeea18 JB |
141 | this.workerImplementation = WorkerFactory.getWorkerImplementation<ChargingStationWorkerData>( |
142 | this.workerScript, | |
143 | Configuration.getWorkerProcess(), | |
8df3f0a9 | 144 | { |
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145 | workerStartDelay: Configuration.getWorkerStartDelay(), |
146 | elementStartDelay: Configuration.getElementStartDelay(), | |
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147 | poolMaxSize: Configuration.getWorkerPoolMaxSize(), |
148 | poolMinSize: Configuration.getWorkerPoolMinSize(), | |
149 | elementsPerWorker: Configuration.getChargingStationsPerWorker(), | |
150 | poolOptions: { | |
e7aeea18 | 151 | workerChoiceStrategy: Configuration.getWorkerPoolStrategy(), |
ffd71f2c | 152 | }, |
98dc07fa | 153 | messageHandler: async (msg: ChargingStationWorkerMessage) => { |
ee0f106b | 154 | if (msg.id === ChargingStationWorkerMessageEvents.STARTED) { |
c3ee95af | 155 | this.uiWebSocketServer.chargingStations.add(msg.data.id as string); |
ee0f106b | 156 | } else if (msg.id === ChargingStationWorkerMessageEvents.STOPPED) { |
c3ee95af | 157 | this.uiWebSocketServer.chargingStations.delete(msg.data.id as string); |
ee0f106b | 158 | } else if (msg.id === ChargingStationWorkerMessageEvents.PERFORMANCE_STATISTICS) { |
c3ee95af | 159 | await this.storage.storePerformanceStatistics(msg.data as unknown as Statistics); |
ffd71f2c | 160 | } |
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161 | }, |
162 | } | |
163 | ); | |
ded13d97 | 164 | } |
81797102 | 165 | |
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166 | private async startChargingStation( |
167 | index: number, | |
168 | stationTemplateUrl: StationTemplateUrl | |
169 | ): Promise<void> { | |
717c1e56 JB |
170 | const workerData: ChargingStationWorkerData = { |
171 | index, | |
e7aeea18 JB |
172 | templateFile: path.join( |
173 | path.resolve(__dirname, '../'), | |
174 | 'assets', | |
175 | 'station-templates', | |
176 | path.basename(stationTemplateUrl.file) | |
177 | ), | |
717c1e56 JB |
178 | }; |
179 | await this.workerImplementation.addElement(workerData); | |
180 | this.numberOfChargingStations++; | |
181 | } | |
182 | ||
81797102 | 183 | private logPrefix(): string { |
689dca78 | 184 | return Utils.logPrefix(' Bootstrap |'); |
81797102 | 185 | } |
ded13d97 | 186 | } |