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1 | // Partial Copyright Jerome Benoit. 2021. All Rights Reserved. |
2 | ||
8114d10e JB |
3 | import path from 'path'; |
4 | import { fileURLToPath } from 'url'; | |
5 | import { isMainThread } from 'worker_threads'; | |
6 | ||
7 | import chalk from 'chalk'; | |
8 | ||
9 | import { version } from '../../package.json'; | |
32de5a57 | 10 | import BaseError from '../exception/BaseError'; |
8114d10e JB |
11 | import { Storage } from '../performance/storage/Storage'; |
12 | import { StorageFactory } from '../performance/storage/StorageFactory'; | |
e7aeea18 | 13 | import { |
32de5a57 | 14 | ChargingStationData, |
e7aeea18 JB |
15 | ChargingStationWorkerData, |
16 | ChargingStationWorkerMessage, | |
17 | ChargingStationWorkerMessageEvents, | |
18 | } from '../types/ChargingStationWorker'; | |
717c1e56 | 19 | import { StationTemplateUrl } from '../types/ConfigurationData'; |
c3ee95af | 20 | import Statistics from '../types/Statistics'; |
8114d10e JB |
21 | import { ApplicationProtocol } from '../types/UIProtocol'; |
22 | import Configuration from '../utils/Configuration'; | |
32de5a57 | 23 | import logger from '../utils/Logger'; |
ded13d97 | 24 | import Utils from '../utils/Utils'; |
fd1fdf1b | 25 | import WorkerAbstract from '../worker/WorkerAbstract'; |
ded13d97 | 26 | import WorkerFactory from '../worker/WorkerFactory'; |
8114d10e JB |
27 | import { ChargingStationUtils } from './ChargingStationUtils'; |
28 | import { AbstractUIServer } from './ui-server/AbstractUIServer'; | |
29 | import { UIServiceUtils } from './ui-server/ui-services/UIServiceUtils'; | |
30 | import UIServerFactory from './ui-server/UIServerFactory'; | |
ded13d97 | 31 | |
32de5a57 LM |
32 | const moduleName = 'Bootstrap'; |
33 | ||
ded13d97 | 34 | export default class Bootstrap { |
535aaa27 | 35 | private static instance: Bootstrap | null = null; |
c3ee95af | 36 | private workerImplementation: WorkerAbstract<ChargingStationWorkerData> | null = null; |
fe94fce0 | 37 | private readonly uiServer!: AbstractUIServer; |
6a49ad23 | 38 | private readonly storage!: Storage; |
7c72977b JB |
39 | private numberOfChargingStationTemplates!: number; |
40 | private numberOfChargingStations!: number; | |
89b7a234 | 41 | private numberOfStartedChargingStations!: number; |
9e23580d | 42 | private readonly version: string = version; |
eb87fe87 | 43 | private started: boolean; |
9e23580d | 44 | private readonly workerScript: string; |
ded13d97 JB |
45 | |
46 | private constructor() { | |
eb87fe87 | 47 | this.started = false; |
e7aeea18 | 48 | this.workerScript = path.join( |
0d8140bd | 49 | path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../'), |
e7aeea18 | 50 | 'charging-station', |
44a95b7f | 51 | 'ChargingStationWorker' + path.extname(fileURLToPath(import.meta.url)) |
e7aeea18 | 52 | ); |
7c72977b | 53 | this.initialize(); |
675fa8e3 | 54 | Configuration.getUIServer().enabled && |
fe94fce0 | 55 | (this.uiServer = UIServerFactory.getUIServerImplementation(ApplicationProtocol.WS, { |
675fa8e3 | 56 | ...Configuration.getUIServer().options, |
e7aeea18 JB |
57 | handleProtocols: UIServiceUtils.handleProtocols, |
58 | })); | |
59 | Configuration.getPerformanceStorage().enabled && | |
60 | (this.storage = StorageFactory.getStorage( | |
61 | Configuration.getPerformanceStorage().type, | |
62 | Configuration.getPerformanceStorage().uri, | |
63 | this.logPrefix() | |
64 | )); | |
7874b0b1 | 65 | Configuration.setConfigurationChangeCallback(async () => Bootstrap.getInstance().restart()); |
ded13d97 JB |
66 | } |
67 | ||
68 | public static getInstance(): Bootstrap { | |
1ca780f9 | 69 | if (Bootstrap.instance === null) { |
ded13d97 JB |
70 | Bootstrap.instance = new Bootstrap(); |
71 | } | |
72 | return Bootstrap.instance; | |
73 | } | |
74 | ||
75 | public async start(): Promise<void> { | |
eb87fe87 | 76 | if (isMainThread && !this.started) { |
ded13d97 | 77 | try { |
7c72977b | 78 | this.initialize(); |
6a49ad23 | 79 | await this.storage?.open(); |
a4bc2942 | 80 | await this.workerImplementation.start(); |
675fa8e3 | 81 | this.uiServer?.start(); |
1f5df42a | 82 | const stationTemplateUrls = Configuration.getStationTemplateUrls(); |
7c72977b | 83 | this.numberOfChargingStationTemplates = stationTemplateUrls.length; |
ded13d97 | 84 | // Start ChargingStation object in worker thread |
45bd0627 | 85 | if (!Utils.isEmptyArray(stationTemplateUrls)) { |
1f5df42a | 86 | for (const stationTemplateUrl of stationTemplateUrls) { |
ded13d97 | 87 | try { |
1f5df42a | 88 | const nbStations = stationTemplateUrl.numberOfStations ?? 0; |
ded13d97 | 89 | for (let index = 1; index <= nbStations; index++) { |
717c1e56 | 90 | await this.startChargingStation(index, stationTemplateUrl); |
ded13d97 JB |
91 | } |
92 | } catch (error) { | |
e7aeea18 JB |
93 | console.error( |
94 | chalk.red( | |
3d25cc86 JB |
95 | 'Error at starting charging station with template file ' + |
96 | stationTemplateUrl.file + | |
97 | ': ' | |
e7aeea18 JB |
98 | ), |
99 | error | |
100 | ); | |
ded13d97 JB |
101 | } |
102 | } | |
103 | } else { | |
45bd0627 JB |
104 | console.warn( |
105 | chalk.yellow("'stationTemplateUrls' not defined or empty in configuration, exiting") | |
106 | ); | |
ded13d97 | 107 | } |
a4bc2942 | 108 | if (this.numberOfChargingStations === 0) { |
e7aeea18 JB |
109 | console.warn( |
110 | chalk.yellow('No charging station template enabled in configuration, exiting') | |
111 | ); | |
32de5a57 | 112 | process.exit(); |
ded13d97 | 113 | } else { |
32de5a57 | 114 | console.info( |
e7aeea18 JB |
115 | chalk.green( |
116 | `Charging stations simulator ${ | |
117 | this.version | |
7c72977b | 118 | } started with ${this.numberOfChargingStations.toString()} charging station(s) from ${this.numberOfChargingStationTemplates.toString()} configured charging station template(s) and ${ |
17ac262c | 119 | ChargingStationUtils.workerDynamicPoolInUse() |
cf2a5d9b | 120 | ? `${Configuration.getWorker().poolMinSize.toString()}/` |
e7aeea18 JB |
121 | : '' |
122 | }${this.workerImplementation.size}${ | |
17ac262c | 123 | ChargingStationUtils.workerPoolInUse() |
cf2a5d9b | 124 | ? `/${Configuration.getWorker().poolMaxSize.toString()}` |
17ac262c | 125 | : '' |
cf2a5d9b | 126 | } worker(s) concurrently running in '${Configuration.getWorker().processType}' mode${ |
e7aeea18 JB |
127 | this.workerImplementation.maxElementsPerWorker |
128 | ? ` (${this.workerImplementation.maxElementsPerWorker} charging station(s) per worker)` | |
129 | : '' | |
130 | }` | |
131 | ) | |
132 | ); | |
ded13d97 | 133 | } |
eb87fe87 | 134 | this.started = true; |
ded13d97 | 135 | } catch (error) { |
8eac9a09 | 136 | console.error(chalk.red('Bootstrap start error '), error); |
ded13d97 | 137 | } |
b322b8b4 JB |
138 | } else { |
139 | console.error(chalk.red('Cannot start an already started charging stations simulator')); | |
ded13d97 JB |
140 | } |
141 | } | |
142 | ||
143 | public async stop(): Promise<void> { | |
eb87fe87 | 144 | if (isMainThread && this.started) { |
a4bc2942 | 145 | await this.workerImplementation.stop(); |
b19021e2 | 146 | this.workerImplementation = null; |
675fa8e3 | 147 | this.uiServer?.stop(); |
6a49ad23 | 148 | await this.storage?.close(); |
b322b8b4 JB |
149 | } else { |
150 | console.error(chalk.red('Trying to stop the charging stations simulator while not started')); | |
ded13d97 | 151 | } |
eb87fe87 | 152 | this.started = false; |
ded13d97 JB |
153 | } |
154 | ||
155 | public async restart(): Promise<void> { | |
156 | await this.stop(); | |
7c72977b | 157 | this.initialize(); |
ded13d97 JB |
158 | await this.start(); |
159 | } | |
160 | ||
ec7f4dce JB |
161 | private initializeWorkerImplementation(): void { |
162 | !this.workerImplementation && | |
163 | (this.workerImplementation = WorkerFactory.getWorkerImplementation<ChargingStationWorkerData>( | |
164 | this.workerScript, | |
cf2a5d9b | 165 | Configuration.getWorker().processType, |
ec7f4dce | 166 | { |
cf2a5d9b JB |
167 | workerStartDelay: Configuration.getWorker().startDelay, |
168 | elementStartDelay: Configuration.getWorker().elementStartDelay, | |
169 | poolMaxSize: Configuration.getWorker().poolMaxSize, | |
170 | poolMinSize: Configuration.getWorker().poolMinSize, | |
171 | elementsPerWorker: Configuration.getWorker().elementsPerWorker, | |
ec7f4dce | 172 | poolOptions: { |
cf2a5d9b | 173 | workerChoiceStrategy: Configuration.getWorker().poolStrategy, |
ec7f4dce | 174 | }, |
32de5a57 LM |
175 | messageHandler: this.messageHandler.bind(this) as ( |
176 | msg: ChargingStationWorkerMessage<ChargingStationData | Statistics> | |
177 | ) => void, | |
ec7f4dce JB |
178 | } |
179 | )); | |
ded13d97 | 180 | } |
81797102 | 181 | |
32de5a57 LM |
182 | private messageHandler( |
183 | msg: ChargingStationWorkerMessage<ChargingStationData | Statistics> | |
184 | ): void { | |
185 | // logger.debug( | |
186 | // `${this.logPrefix()} ${moduleName}.messageHandler: Worker channel message received: ${JSON.stringify( | |
187 | // msg, | |
188 | // null, | |
189 | // 2 | |
190 | // )}` | |
191 | // ); | |
192 | try { | |
193 | switch (msg.id) { | |
194 | case ChargingStationWorkerMessageEvents.STARTED: | |
195 | this.workerEventStarted(msg.data as ChargingStationData); | |
196 | break; | |
197 | case ChargingStationWorkerMessageEvents.STOPPED: | |
198 | this.workerEventStopped(msg.data as ChargingStationData); | |
199 | break; | |
200 | case ChargingStationWorkerMessageEvents.UPDATED: | |
201 | this.workerEventUpdated(msg.data as ChargingStationData); | |
202 | break; | |
203 | case ChargingStationWorkerMessageEvents.PERFORMANCE_STATISTICS: | |
204 | this.workerEventPerformanceStatistics(msg.data as Statistics); | |
205 | break; | |
206 | default: | |
207 | throw new BaseError( | |
208 | `Unknown event type: '${msg.id}' for data: ${JSON.stringify(msg.data, null, 2)}` | |
209 | ); | |
210 | } | |
211 | } catch (error) { | |
212 | logger.error( | |
213 | `${this.logPrefix()} ${moduleName}.messageHandler: Error occurred while handling '${ | |
214 | msg.id | |
215 | }' event:`, | |
216 | error | |
217 | ); | |
218 | } | |
219 | } | |
220 | ||
221 | private workerEventStarted(data: ChargingStationData) { | |
222 | this.uiServer?.chargingStations.set(data.hashId, data); | |
89b7a234 | 223 | ++this.numberOfStartedChargingStations; |
32de5a57 LM |
224 | } |
225 | ||
226 | private workerEventStopped(data: ChargingStationData) { | |
89b7a234 JB |
227 | this.uiServer?.chargingStations.set(data.hashId, data); |
228 | --this.numberOfStartedChargingStations; | |
32de5a57 LM |
229 | } |
230 | ||
231 | private workerEventUpdated(data: ChargingStationData) { | |
232 | this.uiServer?.chargingStations.set(data.hashId, data); | |
233 | } | |
234 | ||
235 | private workerEventPerformanceStatistics = (data: Statistics) => { | |
236 | this.storage.storePerformanceStatistics(data) as void; | |
237 | }; | |
238 | ||
7c72977b | 239 | private initialize() { |
7c72977b | 240 | this.numberOfChargingStationTemplates = 0; |
89b7a234 JB |
241 | this.numberOfChargingStations = 0; |
242 | this.numberOfStartedChargingStations = 0; | |
ec7f4dce | 243 | this.initializeWorkerImplementation(); |
7c72977b JB |
244 | } |
245 | ||
e7aeea18 JB |
246 | private async startChargingStation( |
247 | index: number, | |
248 | stationTemplateUrl: StationTemplateUrl | |
249 | ): Promise<void> { | |
717c1e56 JB |
250 | const workerData: ChargingStationWorkerData = { |
251 | index, | |
e7aeea18 | 252 | templateFile: path.join( |
0d8140bd | 253 | path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../'), |
e7aeea18 JB |
254 | 'assets', |
255 | 'station-templates', | |
ee5f26a2 | 256 | stationTemplateUrl.file |
e7aeea18 | 257 | ), |
717c1e56 JB |
258 | }; |
259 | await this.workerImplementation.addElement(workerData); | |
89b7a234 | 260 | ++this.numberOfChargingStations; |
717c1e56 JB |
261 | } |
262 | ||
81797102 | 263 | private logPrefix(): string { |
689dca78 | 264 | return Utils.logPrefix(' Bootstrap |'); |
81797102 | 265 | } |
ded13d97 | 266 | } |