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7dde0b73 JB |
1 | const Configuration = require('../utils/Configuration'); |
2 | const logger = require('../utils/Logger'); | |
3 | const WebSocket = require('ws'); | |
f7869514 | 4 | const Constants = require('../utils/Constants'); |
7dde0b73 JB |
5 | const Utils = require('../utils/Utils'); |
6 | const OCPPError = require('./OcppError'); | |
7dde0b73 JB |
7 | const AutomaticTransactionGenerator = require('./AutomaticTransactionGenerator'); |
8 | const Statistics = require('../utils/Statistics'); | |
9 | const fs = require('fs'); | |
10 | const {performance, PerformanceObserver} = require('perf_hooks'); | |
11 | ||
12 | class ChargingStation { | |
2e6f5966 JB |
13 | constructor(index, stationTemplateFile) { |
14 | this._index = index; | |
15 | this._stationTemplateFile = stationTemplateFile; | |
16 | this._initialize(); | |
17 | ||
7dde0b73 JB |
18 | this._autoReconnectRetryCount = 0; |
19 | this._autoReconnectMaxRetries = Configuration.getAutoReconnectMaxRetries(); // -1 for unlimited | |
20 | this._autoReconnectTimeout = Configuration.getAutoReconnectTimeout() * 1000; // ms, zero for disabling | |
2e6f5966 JB |
21 | |
22 | this._requests = {}; | |
23 | this._messageQueue = []; | |
24 | ||
7dde0b73 | 25 | this._isSocketRestart = false; |
34dcb3b5 | 26 | |
83045896 | 27 | this._authorizedTags = this._loadAndGetAuthorizedTags(); |
2e6f5966 JB |
28 | } |
29 | ||
30 | _initialize() { | |
31 | this._stationInfo = this._buildStationInfo(); | |
32 | this._bootNotificationMessage = { | |
33 | chargePointModel: this._stationInfo.chargePointModel, | |
34 | chargePointVendor: this._stationInfo.chargePointVendor, | |
6958152c | 35 | chargePointSerialNumber: this._stationInfo.chargePointSerialNumberPrefix ? this._stationInfo.chargePointSerialNumberPrefix : '', |
34dcb3b5 | 36 | firmwareVersion: this._stationInfo.firmwareVersion ? this._stationInfo.firmwareVersion : '', |
2e6f5966 JB |
37 | }; |
38 | this._configuration = this._getConfiguration(); | |
2e6f5966 | 39 | this._supervisionUrl = this._getSupervisionURL(); |
7dde0b73 JB |
40 | this._statistics = new Statistics(this._stationInfo.name); |
41 | this._performanceObserver = new PerformanceObserver((list) => { | |
42 | const entry = list.getEntries()[0]; | |
43 | this._statistics.logPerformance(entry, 'ChargingStation'); | |
44 | this._performanceObserver.disconnect(); | |
45 | }); | |
7dde0b73 JB |
46 | } |
47 | ||
48 | _basicFormatLog() { | |
49 | return Utils.basicFormatLog(` ${this._stationInfo.name}:`); | |
50 | } | |
51 | ||
2e6f5966 JB |
52 | _getConfiguration() { |
53 | return this._stationInfo.Configuration ? this._stationInfo.Configuration : {}; | |
7dde0b73 JB |
54 | } |
55 | ||
2e6f5966 JB |
56 | _getAuthorizationFile() { |
57 | return this._stationInfo.authorizationFile ? this._stationInfo.authorizationFile : ''; | |
7dde0b73 JB |
58 | } |
59 | ||
83045896 | 60 | _loadAndGetAuthorizedTags() { |
2e6f5966 JB |
61 | let authorizedTags = []; |
62 | const authorizationFile = this._getAuthorizationFile(); | |
63 | if (authorizationFile) { | |
64 | try { | |
65 | // Load authorization file | |
66 | const fileDescriptor = fs.openSync(authorizationFile, 'r'); | |
67 | authorizedTags = JSON.parse(fs.readFileSync(fileDescriptor, 'utf8')); | |
68 | fs.closeSync(fileDescriptor); | |
69 | } catch (error) { | |
70 | logger.error(this._basicFormatLog() + ' Authorization file loading error: ' + error); | |
71 | } | |
72 | } else { | |
73 | logger.info(this._basicFormatLog() + ' No authorization file given in template file ' + this._stationTemplateFile); | |
74 | } | |
75 | return authorizedTags; | |
76 | } | |
77 | ||
78 | _startAuthorizationFileMonitoring() { | |
79 | // eslint-disable-next-line no-unused-vars | |
80 | fs.watchFile(this._getAuthorizationFile(), (current, previous) => { | |
81 | try { | |
82 | logger.debug(this._basicFormatLog() + ' Authorization file ' + this._getAuthorizationFile() + ' have changed, reload'); | |
83 | // Initialize _authorizedTags | |
83045896 | 84 | this._authorizedTags = this._loadAndGetAuthorizedTags(); |
2e6f5966 JB |
85 | } catch (error) { |
86 | logger.error(this._basicFormatLog() + ' Authorization file monitoring error: ' + error); | |
87 | } | |
88 | }); | |
89 | } | |
90 | ||
91 | _startStationTemplateFileMonitoring() { | |
92 | // eslint-disable-next-line no-unused-vars | |
93 | fs.watchFile(this._stationTemplateFile, (current, previous) => { | |
94 | try { | |
95 | logger.debug(this._basicFormatLog() + ' Template file ' + this._stationTemplateFile + ' have changed, reload'); | |
96 | // Initialize | |
97 | this._initialize(); | |
adf3e648 JB |
98 | this._addConfigurationKey('HeartBeatInterval', Utils.convertToInt(this._heartbeatInterval ? this._heartbeatInterval : 0)); |
99 | this._addConfigurationKey('HeartbeatInterval', Utils.convertToInt(this._heartbeatInterval ? this._heartbeatInterval : 0), false, false); | |
100 | this._addConfigurationKey('NumberOfConnectors', this._getMaxConnectors(), true); | |
2e6f5966 JB |
101 | } catch (error) { |
102 | logger.error(this._basicFormatLog() + ' Charging station template file monitoring error: ' + error); | |
103 | } | |
104 | }); | |
105 | } | |
106 | ||
107 | _getSupervisionURL() { | |
108 | const supervisionUrls = Utils.cloneJSonDocument(this._stationInfo.supervisionURL ? this._stationInfo.supervisionURL : Configuration.getSupervisionURLs()); | |
7dde0b73 JB |
109 | let indexUrl = 0; |
110 | if (Array.isArray(supervisionUrls)) { | |
2e6f5966 JB |
111 | if (Configuration.getDistributeStationToTenantEqually()) { |
112 | indexUrl = this._index % supervisionUrls.length; | |
7dde0b73 JB |
113 | } else { |
114 | // Get a random url | |
115 | indexUrl = Math.floor(Math.random() * supervisionUrls.length); | |
116 | } | |
117 | return supervisionUrls[indexUrl]; | |
118 | } | |
119 | return supervisionUrls; | |
120 | } | |
121 | ||
2e6f5966 JB |
122 | _getStationName(stationTemplate) { |
123 | return stationTemplate.fixedName ? stationTemplate.baseName : stationTemplate.baseName + '-' + ('000000000' + this._index).substr(('000000000' + this._index).length - 4); | |
7dde0b73 JB |
124 | } |
125 | ||
126 | _getAuthorizeRemoteTxRequests() { | |
61c2e33d | 127 | const authorizeRemoteTxRequests = this._getConfigurationKey('AuthorizeRemoteTxRequests'); |
a6e68f34 | 128 | return authorizeRemoteTxRequests ? Utils.convertToBoolean(authorizeRemoteTxRequests.value) : false; |
7dde0b73 JB |
129 | } |
130 | ||
def3d48e | 131 | _getLocalAuthListEnabled() { |
61c2e33d | 132 | const localAuthListEnabled = this._getConfigurationKey('LocalAuthListEnabled'); |
def3d48e JB |
133 | return localAuthListEnabled ? Utils.convertToBoolean(localAuthListEnabled.value) : false; |
134 | } | |
135 | ||
2e6f5966 JB |
136 | _buildStationInfo() { |
137 | let stationTemplateFromFile; | |
138 | try { | |
139 | // Load template file | |
140 | const fileDescriptor = fs.openSync(this._stationTemplateFile, 'r'); | |
141 | stationTemplateFromFile = JSON.parse(fs.readFileSync(fileDescriptor, 'utf8')); | |
142 | fs.closeSync(fileDescriptor); | |
143 | } catch (error) { | |
144 | logger.error(this._basicFormatLog() + ' Template file loading error: ' + error); | |
145 | } | |
146 | const stationTemplate = stationTemplateFromFile || {}; | |
147 | if (Array.isArray(stationTemplateFromFile.power)) { | |
148 | stationTemplate.maxPower = stationTemplateFromFile.power[Math.floor(Math.random() * stationTemplateFromFile.power.length)]; | |
7dde0b73 | 149 | } else { |
2e6f5966 | 150 | stationTemplate.maxPower = stationTemplateFromFile.power; |
7dde0b73 | 151 | } |
2e6f5966 | 152 | stationTemplate.name = this._getStationName(stationTemplateFromFile); |
7dde0b73 JB |
153 | return stationTemplate; |
154 | } | |
155 | ||
156 | async start() { | |
34dcb3b5 JB |
157 | this._url = this._supervisionUrl + '/' + this._stationInfo.name; |
158 | this._wsConnection = new WebSocket(this._url, 'ocpp1.6'); | |
7dde0b73 | 159 | logger.info(this._basicFormatLog() + ' Will communicate with ' + this._supervisionUrl); |
2e6f5966 JB |
160 | // Monitor authorization file |
161 | this._startAuthorizationFileMonitoring(); | |
162 | // Monitor station template file | |
163 | this._startStationTemplateFileMonitoring(); | |
7dde0b73 JB |
164 | // Handle Socket incoming messages |
165 | this._wsConnection.on('message', this.onMessage.bind(this)); | |
166 | // Handle Socket error | |
167 | this._wsConnection.on('error', this.onError.bind(this)); | |
168 | // Handle Socket close | |
169 | this._wsConnection.on('close', this.onClose.bind(this)); | |
170 | // Handle Socket opening connection | |
171 | this._wsConnection.on('open', this.onOpen.bind(this)); | |
172 | // Handle Socket ping | |
173 | this._wsConnection.on('ping', this.onPing.bind(this)); | |
174 | } | |
175 | ||
176 | onOpen() { | |
177 | logger.info(`${this._basicFormatLog()} Is connected to server through ${this._url}`); | |
0bbcb3dc JB |
178 | if (!this._heartbeatInterval) { |
179 | // Send BootNotification | |
180 | try { | |
181 | this.sendMessage(Utils.generateUUID(), this._bootNotificationMessage, Constants.OCPP_JSON_CALL_MESSAGE, 'BootNotification'); | |
182 | } catch (error) { | |
183 | logger.error(this._basicFormatLog() + ' Send boot notification error: ' + error); | |
184 | } | |
185 | } | |
7dde0b73 | 186 | if (this._isSocketRestart) { |
027b409a | 187 | this._basicStartMessageSequence(); |
7dde0b73 JB |
188 | if (this._messageQueue.length > 0) { |
189 | this._messageQueue.forEach((message) => { | |
190 | if (this._wsConnection.readyState === WebSocket.OPEN) { | |
191 | this._wsConnection.send(message); | |
192 | } | |
193 | }); | |
194 | } | |
7dde0b73 JB |
195 | } |
196 | this._autoReconnectRetryCount = 0; | |
197 | this._isSocketRestart = false; | |
198 | } | |
199 | ||
200 | onError(error) { | |
201 | switch (error) { | |
202 | case 'ECONNREFUSED': | |
203 | this._isSocketRestart = true; | |
204 | this._reconnect(error); | |
205 | break; | |
206 | default: | |
207 | logger.error(this._basicFormatLog() + ' Socket error: ' + error); | |
208 | break; | |
209 | } | |
210 | } | |
211 | ||
212 | onClose(error) { | |
213 | switch (error) { | |
214 | case 1000: // Normal close | |
215 | case 1005: | |
216 | logger.info(this._basicFormatLog() + ' Socket normally closed ' + error); | |
217 | this._autoReconnectRetryCount = 0; | |
218 | break; | |
219 | default: // Abnormal close | |
220 | this._isSocketRestart = true; | |
221 | this._reconnect(error); | |
222 | break; | |
223 | } | |
224 | } | |
225 | ||
226 | onPing() { | |
027b409a | 227 | logger.debug(this._basicFormatLog() + ' Has received a WS ping (rfc6455) from the server'); |
7dde0b73 JB |
228 | } |
229 | ||
230 | async onMessage(message) { | |
2d8cee5a | 231 | let [messageType, messageId, commandName, commandPayload, errorDetails] = [0, '', Constants.ENTITY_CHARGING_STATION, '', '']; |
7dde0b73 | 232 | try { |
2d8cee5a JB |
233 | // Parse the message |
234 | [messageType, messageId, commandName, commandPayload, errorDetails] = JSON.parse(message); | |
235 | ||
7dde0b73 JB |
236 | // Check the Type of message |
237 | switch (messageType) { | |
238 | // Incoming Message | |
f7869514 | 239 | case Constants.OCPP_JSON_CALL_MESSAGE: |
7dde0b73 | 240 | // Process the call |
7dde0b73 JB |
241 | await this.handleRequest(messageId, commandName, commandPayload); |
242 | break; | |
243 | // Outcome Message | |
f7869514 | 244 | case Constants.OCPP_JSON_CALL_RESULT_MESSAGE: |
7dde0b73 JB |
245 | // Respond |
246 | // eslint-disable-next-line no-case-declarations | |
247 | let responseCallback; let requestPayload; | |
248 | if (Utils.isIterable(this._requests[messageId])) { | |
249 | [responseCallback, , requestPayload] = this._requests[messageId]; | |
250 | } else { | |
251 | throw new Error(`Response request for unknown message id ${messageId} is not iterable`); | |
252 | } | |
253 | if (!responseCallback) { | |
254 | // Error | |
255 | throw new Error(`Response for unknown message id ${messageId}`); | |
256 | } | |
257 | delete this._requests[messageId]; | |
7dde0b73 JB |
258 | responseCallback(commandName, requestPayload); |
259 | break; | |
260 | // Error Message | |
f7869514 | 261 | case Constants.OCPP_JSON_CALL_ERROR_MESSAGE: |
7dde0b73 JB |
262 | if (!this._requests[messageId]) { |
263 | // Error | |
264 | throw new Error(`Error for unknown message id ${messageId}`); | |
265 | } | |
266 | // eslint-disable-next-line no-case-declarations | |
267 | let rejectCallback; | |
268 | if (Utils.isIterable(this._requests[messageId])) { | |
269 | [, rejectCallback] = this._requests[messageId]; | |
270 | } else { | |
271 | throw new Error(`Error request for unknown message id ${messageId} is not iterable`); | |
272 | } | |
273 | delete this._requests[messageId]; | |
274 | rejectCallback(new OCPPError(commandName, commandPayload, errorDetails)); | |
275 | break; | |
276 | // Error | |
277 | default: | |
278 | throw new Error(`Wrong message type ${messageType}`); | |
279 | } | |
280 | } catch (error) { | |
281 | // Log | |
282 | logger.error('%s Incoming message %j processing error %s on request content %s', this._basicFormatLog(), message, error, this._requests[messageId]); | |
283 | // Send error | |
284 | // await this.sendError(messageId, error); | |
285 | } | |
286 | } | |
287 | ||
027b409a JB |
288 | // eslint-disable-next-line class-methods-use-this |
289 | async _startHeartbeat(self) { | |
290 | if (self._heartbeatInterval && !self._heartbeatSetInterval) { | |
027b409a JB |
291 | self._heartbeatSetInterval = setInterval(() => { |
292 | try { | |
293 | const payload = { | |
294 | currentTime: new Date().toISOString(), | |
295 | }; | |
296 | self.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'Heartbeat'); | |
297 | } catch (error) { | |
298 | logger.error(self._basicFormatLog() + ' Send heartbeat error: ' + error); | |
299 | } | |
300 | }, self._heartbeatInterval); | |
0bbcb3dc | 301 | logger.info(self._basicFormatLog() + ' Heartbeat started every ' + self._heartbeatInterval + 'ms'); |
027b409a JB |
302 | } else { |
303 | logger.error(self._basicFormatLog() + ' Heartbeat interval undefined, not starting the heartbeat'); | |
304 | } | |
305 | } | |
306 | ||
7dde0b73 JB |
307 | _reconnect(error) { |
308 | logger.error(this._basicFormatLog() + ' Socket: abnormally closed', error); | |
5c68da4d | 309 | // Stop heartbeat |
7dde0b73 JB |
310 | if (this._heartbeatSetInterval) { |
311 | clearInterval(this._heartbeatSetInterval); | |
312 | this._heartbeatSetInterval = null; | |
313 | } | |
34dcb3b5 JB |
314 | // Stop the ATG if needed |
315 | if (Utils.convertToBoolean(this._stationInfo.AutomaticTransactionGenerator.enable) && | |
316 | Utils.convertToBoolean(this._stationInfo.AutomaticTransactionGenerator.stopOnConnectionFailure) && | |
317 | this._automaticTransactionGeneration && | |
318 | !this._automaticTransactionGeneration.timeToStop) { | |
7dde0b73 JB |
319 | this._automaticTransactionGeneration.stop(); |
320 | } | |
321 | if (this._autoReconnectTimeout !== 0 && | |
322 | (this._autoReconnectRetryCount < this._autoReconnectMaxRetries || this._autoReconnectMaxRetries === -1)) { | |
323 | logger.error(`${this._basicFormatLog()} Socket: connection retry with timeout ${this._autoReconnectTimeout}ms`); | |
324 | this._autoReconnectRetryCount++; | |
325 | setTimeout(() => { | |
326 | logger.error(this._basicFormatLog() + ' Socket: reconnecting try #' + this._autoReconnectRetryCount); | |
327 | this.start(); | |
328 | }, this._autoReconnectTimeout); | |
329 | } else if (this._autoReconnectTimeout !== 0 || this._autoReconnectMaxRetries !== -1) { | |
330 | logger.error(`${this._basicFormatLog()} Socket: max retries reached (${this._autoReconnectRetryCount}) or retry disabled (${this._autoReconnectTimeout})`); | |
331 | } | |
332 | } | |
333 | ||
7dde0b73 JB |
334 | sendError(messageId, err) { |
335 | // Check exception: only OCPP error are accepted | |
72766a82 | 336 | const error = err instanceof OCPPError ? err : new OCPPError(Constants.OCPP_ERROR_INTERNAL_ERROR, err.message); |
7dde0b73 | 337 | // Send error |
f7869514 | 338 | return this.sendMessage(messageId, error, Constants.OCPP_JSON_CALL_ERROR_MESSAGE); |
7dde0b73 JB |
339 | } |
340 | ||
027b409a JB |
341 | async sendStatusNotification(connectorId, status, errorCode = 'NoError') { |
342 | try { | |
343 | const payload = { | |
344 | connectorId, | |
345 | errorCode, | |
346 | status, | |
347 | }; | |
348 | await this.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'StatusNotification'); | |
349 | } catch (error) { | |
350 | logger.error(this._basicFormatLog() + ' Send status error: ' + error); | |
351 | } | |
352 | } | |
353 | ||
354 | async sendStatusNotificationWithTimeout(connectorId, status, errorCode = 'NoError', timeout = Constants.STATUS_NOTIFICATION_TIMEOUT) { | |
355 | setTimeout(() => this.sendStatusNotification(connectorId, status, errorCode), timeout); | |
356 | } | |
357 | ||
f7869514 | 358 | sendMessage(messageId, command, messageType = Constants.OCPP_JSON_CALL_RESULT_MESSAGE, commandName = '') { |
7dde0b73 JB |
359 | // Send a message through wsConnection |
360 | const self = this; | |
361 | // Create a promise | |
362 | return new Promise((resolve, reject) => { | |
363 | let messageToSend; | |
364 | // Type of message | |
365 | switch (messageType) { | |
366 | // Request | |
f7869514 | 367 | case Constants.OCPP_JSON_CALL_MESSAGE: |
7dde0b73 JB |
368 | this._statistics.addMessage(commandName); |
369 | // Build request | |
370 | this._requests[messageId] = [responseCallback, rejectCallback, command]; | |
371 | messageToSend = JSON.stringify([messageType, messageId, commandName, command]); | |
372 | break; | |
373 | // Response | |
f7869514 | 374 | case Constants.OCPP_JSON_CALL_RESULT_MESSAGE: |
d3a7883e | 375 | this._statistics.addMessage(commandName); |
7dde0b73 JB |
376 | // Build response |
377 | messageToSend = JSON.stringify([messageType, messageId, command]); | |
378 | break; | |
379 | // Error Message | |
f7869514 | 380 | case Constants.OCPP_JSON_CALL_ERROR_MESSAGE: |
7dde0b73 | 381 | // Build Message |
7de604f9 | 382 | this._statistics.addMessage(`Error ${command.code ? command.code : Constants.OCPP_ERROR_GENERIC_ERROR} on ${commandName || ''}`); |
894a1780 | 383 | messageToSend = JSON.stringify([messageType, messageId, command.code ? command.code : Constants.OCPP_ERROR_GENERIC_ERROR, command.message ? command.message : '', command.details ? command.details : {}]); |
7dde0b73 JB |
384 | break; |
385 | } | |
2e6f5966 | 386 | // Check if wsConnection is ready |
7dde0b73 JB |
387 | if (this._wsConnection.readyState === WebSocket.OPEN) { |
388 | // Yes: Send Message | |
389 | this._wsConnection.send(messageToSend); | |
390 | } else { | |
391 | // Buffer message until connection is back | |
392 | this._messageQueue.push(messageToSend); | |
393 | } | |
394 | // Request? | |
f7869514 | 395 | if (messageType !== Constants.OCPP_JSON_CALL_MESSAGE) { |
7dde0b73 JB |
396 | // Yes: send Ok |
397 | resolve(); | |
398 | } else if (this._wsConnection.readyState === WebSocket.OPEN) { | |
399 | // Send timeout in case connection is open otherwise wait for ever | |
400 | // FIXME: Handle message on timeout | |
f7869514 | 401 | setTimeout(() => rejectCallback(`Timeout for message ${messageId}`), Constants.OCPP_SOCKET_TIMEOUT); |
7dde0b73 JB |
402 | } |
403 | ||
404 | // Function that will receive the request's response | |
405 | function responseCallback(payload, requestPayload) { | |
406 | self._statistics.addMessage(commandName, true); | |
407 | const responseCallbackFn = 'handleResponse' + commandName; | |
408 | if (typeof self[responseCallbackFn] === 'function') { | |
409 | self[responseCallbackFn](payload, requestPayload, self); | |
410 | } else { | |
61c2e33d | 411 | logger.debug(self._basicFormatLog() + ' Trying to call an undefined response callback function: ' + responseCallbackFn); |
7dde0b73 JB |
412 | } |
413 | // Send the response | |
414 | resolve(payload); | |
415 | } | |
416 | ||
417 | // Function that will receive the request's rejection | |
418 | function rejectCallback(reason) { | |
7de604f9 | 419 | self._statistics.addMessage(`Error ${command.code ? command.code : Constants.OCPP_ERROR_GENERIC_ERROR} on ${commandName || ''}`, true); |
7dde0b73 JB |
420 | // Build Exception |
421 | // eslint-disable-next-line no-empty-function | |
422 | self._requests[messageId] = [() => { }, () => { }, '']; // Properly format the request | |
423 | const error = reason instanceof OCPPError ? reason : new Error(reason); | |
424 | // Send error | |
425 | reject(error); | |
426 | } | |
427 | }); | |
428 | } | |
429 | ||
027b409a | 430 | async _basicStartMessageSequence() { |
5c68da4d | 431 | // Start heartbeat |
7dde0b73 | 432 | this._startHeartbeat(this); |
61c2e33d | 433 | // Build connectors |
2e6f5966 | 434 | if (!this._connectors) { |
7dde0b73 | 435 | this._connectors = {}; |
2e6f5966 | 436 | const connectorsConfig = Utils.cloneJSonDocument(this._stationInfo.Connectors); |
61c2e33d | 437 | // Determine number of customized connectors |
7dde0b73 JB |
438 | let lastConnector; |
439 | for (lastConnector in connectorsConfig) { | |
61c2e33d JB |
440 | // Add connector 0, OCPP specification violation that for example KEBA have |
441 | if (Utils.convertToInt(lastConnector) === 0 && Utils.convertToBoolean(this._stationInfo.useConnectorId0) && | |
d3a7883e | 442 | connectorsConfig[lastConnector]) { |
7dde0b73 JB |
443 | this._connectors[lastConnector] = connectorsConfig[lastConnector]; |
444 | } | |
445 | } | |
adf3e648 | 446 | const maxConnectors = this._getMaxConnectors(); |
61c2e33d JB |
447 | this._addConfigurationKey('NumberOfConnectors', maxConnectors, true); |
448 | // Generate all connectors | |
7dde0b73 | 449 | for (let index = 1; index <= maxConnectors; index++) { |
34dcb3b5 | 450 | const randConnectorID = Utils.convertToBoolean(this._stationInfo.randomConnectors) ? Utils.getRandomInt(lastConnector, 1) : index; |
7dde0b73 JB |
451 | this._connectors[index] = connectorsConfig[randConnectorID]; |
452 | } | |
453 | } | |
454 | ||
455 | for (const connector in this._connectors) { | |
456 | if (!this._connectors[connector].transactionStarted) { | |
457 | if (this._connectors[connector].bootStatus) { | |
027b409a | 458 | this.sendStatusNotificationWithTimeout(connector, this._connectors[connector].bootStatus); |
7dde0b73 | 459 | } else { |
027b409a | 460 | this.sendStatusNotificationWithTimeout(connector, 'Available'); |
7dde0b73 JB |
461 | } |
462 | } else { | |
027b409a | 463 | this.sendStatusNotificationWithTimeout(connector, 'Charging'); |
7dde0b73 JB |
464 | } |
465 | } | |
466 | ||
34dcb3b5 | 467 | if (Utils.convertToBoolean(this._stationInfo.AutomaticTransactionGenerator.enable)) { |
7dde0b73 JB |
468 | if (!this._automaticTransactionGeneration) { |
469 | this._automaticTransactionGeneration = new AutomaticTransactionGenerator(this); | |
470 | } | |
34dcb3b5 JB |
471 | if (this._automaticTransactionGeneration.timeToStop) { |
472 | this._automaticTransactionGeneration.start(); | |
473 | } | |
7dde0b73 JB |
474 | } |
475 | this._statistics.start(); | |
476 | } | |
477 | ||
027b409a JB |
478 | _resetTransactionOnConnector(connectorID) { |
479 | this._connectors[connectorID].transactionStarted = false; | |
480 | this._connectors[connectorID].transactionId = null; | |
d3a7883e | 481 | this._connectors[connectorID].idTag = null; |
027b409a JB |
482 | this._connectors[connectorID].lastConsumptionValue = -1; |
483 | this._connectors[connectorID].lastSoC = -1; | |
d3a7883e JB |
484 | if (this._connectors[connectorID].transactionSetInterval) { |
485 | clearInterval(this._connectors[connectorID].transactionSetInterval); | |
027b409a JB |
486 | } |
487 | } | |
488 | ||
489 | handleResponseBootNotification(payload) { | |
490 | if (payload.status === 'Accepted') { | |
491 | this._heartbeatInterval = payload.interval * 1000; | |
5c68da4d JB |
492 | this._addConfigurationKey('HeartBeatInterval', Utils.convertToInt(payload.interval)); |
493 | this._addConfigurationKey('HeartbeatInterval', Utils.convertToInt(payload.interval), false, false); | |
027b409a JB |
494 | this._basicStartMessageSequence(); |
495 | } else { | |
496 | logger.info(this._basicFormatLog() + ' Boot Notification rejected'); | |
497 | } | |
498 | } | |
499 | ||
7dde0b73 | 500 | handleResponseStartTransaction(payload, requestPayload) { |
d3a7883e JB |
501 | if (this._connectors[requestPayload.connectorId].transactionStarted) { |
502 | logger.debug(this._basicFormatLog() + ' Try to start a transaction on an already used connector ' + requestPayload.connectorId + ' by transaction ' + this._connectors[requestPayload.connectorId].transactionId); | |
503 | } | |
84393381 | 504 | |
7de604f9 JB |
505 | let transactionConnectorId; |
506 | for (const connector in this._connectors) { | |
507 | if (Utils.convertToInt(connector) === Utils.convertToInt(requestPayload.connectorId)) { | |
508 | transactionConnectorId = connector; | |
509 | break; | |
7dde0b73 | 510 | } |
7de604f9 JB |
511 | } |
512 | if (!transactionConnectorId) { | |
513 | logger.error(this._basicFormatLog() + ' Try to start a transaction on a non existing connector Id ' + requestPayload.connectorId); | |
514 | return; | |
515 | } | |
516 | if (payload.idTagInfo && payload.idTagInfo.status === 'Accepted') { | |
517 | this._connectors[transactionConnectorId].transactionStarted = true; | |
518 | this._connectors[transactionConnectorId].transactionId = payload.transactionId; | |
519 | this._connectors[transactionConnectorId].idTag = requestPayload.idTag; | |
520 | this._connectors[transactionConnectorId].lastConsumptionValue = 0; | |
521 | this._connectors[transactionConnectorId].lastSoC = 0; | |
522 | this.sendStatusNotification(requestPayload.connectorId, 'Charging'); | |
523 | logger.info(this._basicFormatLog() + ' Transaction ' + this._connectors[transactionConnectorId].transactionId + ' STARTED on ' + this._stationInfo.name + '#' + requestPayload.connectorId + ' for idTag ' + requestPayload.idTag); | |
524 | const configuredMeterValueSampleInterval = this._getConfigurationKey('MeterValueSampleInterval'); | |
525 | this.startMeterValues(requestPayload.connectorId, | |
526 | configuredMeterValueSampleInterval ? configuredMeterValueSampleInterval.value * 1000 : 60000); | |
7dde0b73 JB |
527 | } else { |
528 | logger.error(this._basicFormatLog() + ' Starting transaction id ' + payload.transactionId + ' REJECTED with status ' + payload.idTagInfo.status + ', idTag ' + requestPayload.idTag); | |
7de604f9 | 529 | this._resetTransactionOnConnector(transactionConnectorId); |
7dde0b73 JB |
530 | this.sendStatusNotification(requestPayload.connectorId, 'Available'); |
531 | } | |
532 | } | |
533 | ||
34dcb3b5 | 534 | handleResponseStopTransaction(payload, requestPayload) { |
d3a7883e JB |
535 | let transactionConnectorId; |
536 | for (const connector in this._connectors) { | |
537 | if (this._connectors[connector].transactionId === requestPayload.transactionId) { | |
538 | transactionConnectorId = connector; | |
539 | break; | |
540 | } | |
541 | } | |
542 | if (!transactionConnectorId) { | |
7de604f9 JB |
543 | logger.error(this._basicFormatLog() + ' Try to stop a non existing transaction ' + requestPayload.transactionId); |
544 | return; | |
d3a7883e JB |
545 | } |
546 | if (payload.idTagInfo && payload.idTagInfo.status === 'Accepted') { | |
547 | this.sendStatusNotification(transactionConnectorId, 'Available'); | |
548 | logger.info(this._basicFormatLog() + ' Transaction ' + this._connectors[transactionConnectorId].transactionId + ' STOPPED on ' + this._stationInfo.name + '#' + transactionConnectorId); | |
549 | this._resetTransactionOnConnector(transactionConnectorId); | |
34dcb3b5 | 550 | } else { |
d3a7883e | 551 | logger.error(this._basicFormatLog() + ' Stopping transaction id ' + this._connectors[transactionConnectorId].transactionId + ' REJECTED with status ' + payload.idTagInfo.status); |
34dcb3b5 JB |
552 | } |
553 | } | |
554 | ||
facd8ebd JB |
555 | handleResponseStatusNotification(payload, requestPayload) { |
556 | logger.debug(this._basicFormatLog() + ' Status notification response received: %j to status notification request: %j', payload, requestPayload); | |
7dde0b73 JB |
557 | } |
558 | ||
facd8ebd JB |
559 | handleResponseMeterValues(payload, requestPayload) { |
560 | logger.debug(this._basicFormatLog() + ' MeterValues response received: %j to MeterValues request: %j', payload, requestPayload); | |
027b409a JB |
561 | } |
562 | ||
facd8ebd JB |
563 | handleResponseHeartbeat(payload, requestPayload) { |
564 | logger.debug(this._basicFormatLog() + ' Heartbeat response received: %j to Heartbeat request: %j', payload, requestPayload); | |
7dde0b73 JB |
565 | } |
566 | ||
567 | async handleRequest(messageId, commandName, commandPayload) { | |
568 | let result; | |
569 | this._statistics.addMessage(commandName, true); | |
570 | // Call | |
571 | if (typeof this['handle' + commandName] === 'function') { | |
572 | try { | |
573 | // Call the method | |
574 | result = await this['handle' + commandName](commandPayload); | |
575 | } catch (error) { | |
576 | // Log | |
577 | logger.error(this._basicFormatLog() + ' Handle request error: ' + error); | |
facd8ebd | 578 | // Send back response to inform backend |
7dde0b73 JB |
579 | await this.sendError(messageId, error); |
580 | } | |
581 | } else { | |
84393381 | 582 | // Throw exception |
f7869514 | 583 | await this.sendError(messageId, new OCPPError(Constants.OCPP_ERROR_NOT_IMPLEMENTED, 'Not implemented', {})); |
7dde0b73 JB |
584 | throw new Error(`${commandName} is not implemented ${JSON.stringify(commandPayload, null, ' ')}`); |
585 | } | |
84393381 | 586 | // Send response |
f7869514 | 587 | await this.sendMessage(messageId, result, Constants.OCPP_JSON_CALL_RESULT_MESSAGE); |
7dde0b73 JB |
588 | } |
589 | ||
61c2e33d JB |
590 | _getConfigurationKey(key) { |
591 | return this._configuration.configurationKey.find((configElement) => configElement.key === key); | |
592 | } | |
593 | ||
3497da01 | 594 | _addConfigurationKey(key, value, readonly = false, visible = true, reboot = false) { |
61c2e33d JB |
595 | const keyFound = this._getConfigurationKey(key); |
596 | if (!keyFound) { | |
597 | this._configuration.configurationKey.push({ | |
598 | key, | |
599 | readonly, | |
600 | value, | |
601 | visible, | |
3497da01 | 602 | reboot, |
61c2e33d JB |
603 | }); |
604 | } | |
605 | } | |
606 | ||
607 | _setConfigurationKeyValue(key, value) { | |
608 | const keyFound = this._getConfigurationKey(key); | |
609 | if (keyFound) { | |
d3a7883e JB |
610 | const keyIndex = this._configuration.configurationKey.indexOf(keyFound); |
611 | this._configuration.configurationKey[keyIndex].value = value; | |
61c2e33d JB |
612 | } |
613 | } | |
614 | ||
34dcb3b5 | 615 | async handleGetConfiguration(commandPayload) { |
facd8ebd JB |
616 | const configurationKey = []; |
617 | const unknownKey = []; | |
61c2e33d JB |
618 | if (Utils.isEmptyArray(commandPayload.key)) { |
619 | for (const configuration of this._configuration.configurationKey) { | |
620 | if (Utils.isUndefined(configuration.visible)) { | |
621 | configuration.visible = true; | |
622 | } else { | |
623 | configuration.visible = Utils.convertToBoolean(configuration.visible); | |
624 | } | |
625 | if (!configuration.visible) { | |
626 | continue; | |
627 | } | |
628 | configurationKey.push({ | |
629 | key: configuration.key, | |
630 | readonly: configuration.readonly, | |
631 | value: configuration.value, | |
632 | }); | |
facd8ebd | 633 | } |
61c2e33d | 634 | } else { |
d20c21a0 JB |
635 | for (const configurationKey of commandPayload.key) { |
636 | const keyFound = this._getConfigurationKey(configurationKey); | |
61c2e33d JB |
637 | if (keyFound) { |
638 | if (Utils.isUndefined(keyFound.visible)) { | |
639 | keyFound.visible = true; | |
640 | } else { | |
d20c21a0 | 641 | keyFound.visible = Utils.convertToBoolean(configurationKey.visible); |
61c2e33d JB |
642 | } |
643 | if (!keyFound.visible) { | |
644 | continue; | |
645 | } | |
646 | configurationKey.push({ | |
647 | key: keyFound.key, | |
648 | readonly: keyFound.readonly, | |
649 | value: keyFound.value, | |
650 | }); | |
651 | } else { | |
d20c21a0 | 652 | unknownKey.push(configurationKey); |
61c2e33d | 653 | } |
facd8ebd | 654 | } |
facd8ebd JB |
655 | } |
656 | return { | |
657 | configurationKey, | |
658 | unknownKey, | |
659 | }; | |
7dde0b73 JB |
660 | } |
661 | ||
662 | async handleChangeConfiguration(commandPayload) { | |
61c2e33d | 663 | const keyToChange = this._getConfigurationKey(commandPayload.key); |
7d887a1b JB |
664 | if (!keyToChange) { |
665 | return {status: Constants.OCPP_ERROR_NOT_SUPPORTED}; | |
666 | } else if (keyToChange && Utils.convertToBoolean(keyToChange.readonly)) { | |
667 | return Constants.OCPP_RESPONSE_REJECTED; | |
668 | } else if (keyToChange && !Utils.convertToBoolean(keyToChange.readonly)) { | |
a6e68f34 JB |
669 | const keyIndex = this._configuration.configurationKey.indexOf(keyToChange); |
670 | this._configuration.configurationKey[keyIndex].value = commandPayload.value; | |
d3a7883e JB |
671 | let triggerHeartbeatRestart = false; |
672 | if (keyToChange.key === 'HeartBeatInterval') { | |
673 | this._setConfigurationKeyValue('HeartbeatInterval', commandPayload.value); | |
674 | triggerHeartbeatRestart = true; | |
675 | } | |
676 | if (keyToChange.key === 'HeartbeatInterval') { | |
677 | this._setConfigurationKeyValue('HeartBeatInterval', commandPayload.value); | |
678 | triggerHeartbeatRestart = true; | |
679 | } | |
680 | if (triggerHeartbeatRestart) { | |
5c68da4d JB |
681 | this._heartbeatInterval = Utils.convertToInt(commandPayload.value) * 1000; |
682 | // Stop heartbeat | |
683 | if (this._heartbeatSetInterval) { | |
684 | clearInterval(this._heartbeatSetInterval); | |
685 | this._heartbeatSetInterval = null; | |
686 | } | |
687 | // Start heartbeat | |
688 | this._startHeartbeat(this); | |
689 | } | |
7d887a1b JB |
690 | if (Utils.convertToBoolean(keyToChange.reboot)) { |
691 | return Constants.OCPP_RESPONSE_REBOOT_REQUIRED; | |
692 | } | |
dcab13bd | 693 | return Constants.OCPP_RESPONSE_ACCEPTED; |
7dde0b73 | 694 | } |
7dde0b73 JB |
695 | } |
696 | ||
697 | async handleRemoteStartTransaction(commandPayload) { | |
72766a82 | 698 | const transactionConnectorID = commandPayload.connectorId ? commandPayload.connectorId : '1'; |
2e6f5966 | 699 | if (this.hasAuthorizedTags() && this._getLocalAuthListEnabled() && this._getAuthorizeRemoteTxRequests()) { |
dcab13bd | 700 | // Check if authorized |
2e6f5966 | 701 | if (this._authorizedTags.find((value) => value === commandPayload.idTag)) { |
7dde0b73 | 702 | // Authorization successful start transaction |
61c2e33d | 703 | this.sendStartTransactionWithTimeout(transactionConnectorID, commandPayload.idTag, Constants.START_TRANSACTION_TIMEOUT); |
027b409a | 704 | logger.debug(this._basicFormatLog() + ' Transaction remotely STARTED on ' + this._stationInfo.name + '#' + transactionConnectorID + ' for idTag ' + commandPayload.idTag); |
dcab13bd | 705 | return Constants.OCPP_RESPONSE_ACCEPTED; |
7dde0b73 | 706 | } |
84393381 | 707 | logger.error(this._basicFormatLog() + ' Remote starting transaction REJECTED with status ' + commandPayload.idTagInfo.status + ', idTag ' + commandPayload.idTag); |
dcab13bd | 708 | return Constants.OCPP_RESPONSE_REJECTED; |
7dde0b73 | 709 | } |
dcab13bd | 710 | // No local authorization check required => start transaction |
61c2e33d | 711 | this.sendStartTransactionWithTimeout(transactionConnectorID, commandPayload.idTag, Constants.START_TRANSACTION_TIMEOUT); |
027b409a JB |
712 | logger.debug(this._basicFormatLog() + ' Transaction remotely STARTED on ' + this._stationInfo.name + '#' + transactionConnectorID + ' for idTag ' + commandPayload.idTag); |
713 | return Constants.OCPP_RESPONSE_ACCEPTED; | |
714 | } | |
715 | ||
716 | async handleRemoteStopTransaction(commandPayload) { | |
717 | for (const connector in this._connectors) { | |
718 | if (this._connectors[connector].transactionId === commandPayload.transactionId) { | |
d3a7883e JB |
719 | this.sendStopTransaction(commandPayload.transactionId); |
720 | return Constants.OCPP_RESPONSE_ACCEPTED; | |
027b409a JB |
721 | } |
722 | } | |
d3a7883e JB |
723 | logger.info(this._basicFormatLog() + ' Try to stop remotely a non existing transaction ' + commandPayload.transactionId); |
724 | return Constants.OCPP_RESPONSE_REJECTED; | |
7dde0b73 JB |
725 | } |
726 | ||
727 | async sendStartTransaction(connectorID, idTag) { | |
728 | try { | |
729 | const payload = { | |
730 | connectorId: connectorID, | |
731 | idTag, | |
732 | meterStart: 0, | |
733 | timestamp: new Date().toISOString(), | |
734 | }; | |
027b409a | 735 | return await this.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'StartTransaction'); |
7dde0b73 JB |
736 | } catch (error) { |
737 | logger.error(this._basicFormatLog() + ' Send start transaction error: ' + error); | |
7dde0b73 JB |
738 | throw error; |
739 | } | |
740 | } | |
61c2e33d JB |
741 | async sendStartTransactionWithTimeout(connectorID, idTag, timeout) { |
742 | setTimeout(() => this.sendStartTransaction(connectorID, idTag), timeout); | |
743 | } | |
7dde0b73 | 744 | |
d3a7883e | 745 | async sendStopTransaction(transactionId) { |
7dde0b73 JB |
746 | try { |
747 | const payload = { | |
748 | transactionId, | |
749 | meterStop: 0, | |
750 | timestamp: new Date().toISOString(), | |
751 | }; | |
027b409a | 752 | await this.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'StopTransaction'); |
7dde0b73 JB |
753 | } catch (error) { |
754 | logger.error(this._basicFormatLog() + ' Send stop transaction error: ' + error); | |
755 | throw error; | |
7dde0b73 JB |
756 | } |
757 | } | |
758 | ||
7dde0b73 | 759 | // eslint-disable-next-line class-methods-use-this |
7de604f9 | 760 | async sendMeterValues(connectorID, interval, self, debug = false) { |
7dde0b73 JB |
761 | try { |
762 | const sampledValueLcl = { | |
763 | timestamp: new Date().toISOString(), | |
764 | }; | |
2e6f5966 | 765 | const meterValuesClone = Utils.cloneJSonDocument(self._getConnector(connectorID).MeterValues); |
7dde0b73 JB |
766 | if (Array.isArray(meterValuesClone)) { |
767 | sampledValueLcl.sampledValue = meterValuesClone; | |
768 | } else { | |
769 | sampledValueLcl.sampledValue = [meterValuesClone]; | |
770 | } | |
771 | for (let index = 0; index < sampledValueLcl.sampledValue.length; index++) { | |
7de604f9 | 772 | const connector = self._connectors[connectorID]; |
7dde0b73 | 773 | if (sampledValueLcl.sampledValue[index].measurand && sampledValueLcl.sampledValue[index].measurand === 'SoC') { |
61c2e33d | 774 | sampledValueLcl.sampledValue[index].value = Utils.getRandomInt(100); |
7de604f9 JB |
775 | if (sampledValueLcl.sampledValue[index].value > 100 || debug) { |
776 | logger.error(`${self._basicFormatLog()} MeterValues measurand ${sampledValueLcl.sampledValue[index].measurand ? sampledValueLcl.sampledValue[index].measurand : 'Energy.Active.Import.Register'}: connectorID ${connectorID}, transaction ${connector.transactionId}, value: ${sampledValueLcl.sampledValue[index].value}`); | |
7dde0b73 JB |
777 | } |
778 | } else { | |
779 | // Persist previous value in connector | |
7de604f9 | 780 | const consumption = Utils.getRandomInt(self._stationInfo.maxPower / 3600000 * interval); |
7dde0b73 JB |
781 | if (connector && connector.lastConsumptionValue >= 0) { |
782 | connector.lastConsumptionValue += consumption; | |
783 | } else { | |
784 | connector.lastConsumptionValue = 0; | |
785 | } | |
7de604f9 JB |
786 | const maxConsumption = self._stationInfo.maxPower * 3600 / interval; |
787 | logger.info(`${self._basicFormatLog()} MeterValues measurand ${sampledValueLcl.sampledValue[index].measurand ? sampledValueLcl.sampledValue[index].measurand : 'Energy.Active.Import.Register'}: connectorID ${connectorID}, transaction ${connector.transactionId}, value ${connector.lastConsumptionValue}`); | |
7dde0b73 | 788 | sampledValueLcl.sampledValue[index].value = connector.lastConsumptionValue; |
7de604f9 JB |
789 | if (sampledValueLcl.sampledValue[index].value > maxConsumption || debug) { |
790 | logger.error(`${self._basicFormatLog()} MeterValues measurand ${sampledValueLcl.sampledValue[index].measurand ? sampledValueLcl.sampledValue[index].measurand : 'Energy.Active.Import.Register'}: connectorID ${connectorID}, transaction ${connector.transactionId}, value: ${sampledValueLcl.sampledValue[index].value}/${maxConsumption}`); | |
7dde0b73 JB |
791 | } |
792 | } | |
793 | } | |
794 | ||
795 | const payload = { | |
796 | connectorId: connectorID, | |
797 | transactionId: self._connectors[connectorID].transactionId, | |
798 | meterValue: [sampledValueLcl], | |
799 | }; | |
027b409a | 800 | await self.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'MeterValues'); |
7dde0b73 | 801 | } catch (error) { |
34dcb3b5 | 802 | logger.error(self._basicFormatLog() + ' Send MeterValues error: ' + error); |
7dde0b73 JB |
803 | } |
804 | } | |
805 | ||
7de604f9 | 806 | async startMeterValues(connectorID, interval) { |
84393381 | 807 | if (!this._connectors[connectorID].transactionStarted) { |
7de604f9 JB |
808 | logger.error(`${this._basicFormatLog()} Trying to start MeterValues on connector ID ${connectorID} with no transaction started`); |
809 | return; | |
84393381 | 810 | } else if (this._connectors[connectorID].transactionStarted && !this._connectors[connectorID].transactionId) { |
7de604f9 JB |
811 | logger.error(`${this._basicFormatLog()} Trying to start MeterValues on connector ID ${connectorID} with no transaction id`); |
812 | return; | |
84393381 | 813 | } |
d3a7883e | 814 | this._connectors[connectorID].transactionSetInterval = setInterval(async () => { |
7dde0b73 JB |
815 | const sendMeterValues = performance.timerify(this.sendMeterValues); |
816 | this._performanceObserver.observe({ | |
817 | entryTypes: ['function'], | |
818 | }); | |
7de604f9 | 819 | await sendMeterValues(connectorID, interval, this); |
7dde0b73 JB |
820 | }, interval); |
821 | } | |
822 | ||
2e6f5966 | 823 | hasAuthorizedTags() { |
4a56deef | 824 | return !Utils.isEmptyArray(this._authorizedTags); |
7dde0b73 JB |
825 | } |
826 | ||
827 | getRandomTagId() { | |
61c2e33d | 828 | const index = Math.floor(Math.random() * this._authorizedTags.length); |
2e6f5966 | 829 | return this._authorizedTags[index]; |
7dde0b73 JB |
830 | } |
831 | ||
832 | _getConnector(number) { | |
833 | return this._stationInfo.Connectors[number]; | |
834 | } | |
adf3e648 JB |
835 | |
836 | _getMaxConnectors() { | |
837 | let maxConnectors = 0; | |
838 | if (Array.isArray(this._stationInfo.numberOfConnectors)) { | |
839 | // Generate some connectors | |
840 | maxConnectors = this._stationInfo.numberOfConnectors[(this._index - 1) % this._stationInfo.numberOfConnectors.length]; | |
841 | } else { | |
842 | maxConnectors = this._stationInfo.numberOfConnectors; | |
843 | } | |
844 | return maxConnectors; | |
845 | } | |
7dde0b73 JB |
846 | } |
847 | ||
848 | module.exports = ChargingStation; |