1 import BaseError from
'../exception/BaseError';
2 import { RequestCommand
} from
'../types/ocpp/Requests';
5 StartTransactionRequest
,
6 StartTransactionResponse
,
8 StopTransactionRequest
,
9 StopTransactionResponse
,
10 } from
'../types/ocpp/Transaction';
12 BroadcastChannelProcedureName
,
13 BroadcastChannelRequest
,
14 BroadcastChannelRequestPayload
,
15 BroadcastChannelResponsePayload
,
17 } from
'../types/WorkerBroadcastChannel';
18 import { ResponseStatus
} from
'../ui/web/src/type/UIProtocol';
19 import logger from
'../utils/Logger';
20 import type ChargingStation from
'./ChargingStation';
21 import WorkerBroadcastChannel from
'./WorkerBroadcastChannel';
23 const moduleName
= 'ChargingStationWorkerBroadcastChannel';
25 type CommandResponse
= StartTransactionResponse
| StopTransactionResponse
;
27 export default class ChargingStationWorkerBroadcastChannel
extends WorkerBroadcastChannel
{
28 private readonly chargingStation
: ChargingStation
;
30 constructor(chargingStation
: ChargingStation
) {
32 this.chargingStation
= chargingStation
;
33 this.onmessage
= this.requestHandler
.bind(this) as (message
: MessageEvent
) => void;
34 this.onmessageerror
= this.messageErrorHandler
.bind(this) as (message
: MessageEvent
) => void;
37 private async requestHandler(messageEvent
: MessageEvent
): Promise
<void> {
38 if (this.isResponse(messageEvent
.data
)) {
41 if (Array.isArray(messageEvent
.data
) === false) {
42 throw new BaseError('Worker broadcast channel protocol request is not an array');
45 const [uuid
, command
, requestPayload
] = messageEvent
.data
as BroadcastChannelRequest
;
47 if (requestPayload
?.hashId
!== this.chargingStation
.hashId
) {
51 let responsePayload
: BroadcastChannelResponsePayload
;
52 let commandResponse
: CommandResponse
;
54 commandResponse
= await this.commandHandler(command
, requestPayload
);
55 if (commandResponse
=== undefined) {
56 responsePayload
= { status: ResponseStatus
.SUCCESS
};
58 responsePayload
= { status: this.commandResponseToResponseStatus(commandResponse
) };
62 `${this.chargingStation.logPrefix()} ${moduleName}.requestHandler: Handle request error:`,
66 status: ResponseStatus
.FAILURE
,
70 errorMessage
: (error
as Error).message
,
71 errorStack
: (error
as Error).stack
,
74 this.sendResponse([uuid
, responsePayload
]);
77 private messageErrorHandler(messageEvent
: MessageEvent
): void {
79 `${this.chargingStation.logPrefix()} ${moduleName}.messageErrorHandler: Error at handling message:`,
80 { messageEvent
, messageEventData
: messageEvent
.data
}
84 private async commandHandler(
85 command
: BroadcastChannelProcedureName
,
86 requestPayload
: BroadcastChannelRequestPayload
87 ): Promise
<CommandResponse
| undefined> {
89 case BroadcastChannelProcedureName
.START_TRANSACTION
:
90 return this.chargingStation
.ocppRequestService
.requestHandler
<
91 StartTransactionRequest
,
92 StartTransactionResponse
93 >(this.chargingStation
, RequestCommand
.START_TRANSACTION
, {
94 connectorId
: requestPayload
.connectorId
,
95 idTag
: requestPayload
.idTag
,
97 case BroadcastChannelProcedureName
.STOP_TRANSACTION
:
98 return this.chargingStation
.ocppRequestService
.requestHandler
<
99 StopTransactionRequest
,
100 StopTransactionResponse
101 >(this.chargingStation
, RequestCommand
.STOP_TRANSACTION
, {
102 transactionId
: requestPayload
.transactionId
,
103 meterStop
: this.chargingStation
.getEnergyActiveImportRegisterByTransactionId(
104 requestPayload
.transactionId
106 idTag
: this.chargingStation
.getTransactionIdTag(requestPayload
.transactionId
),
107 reason
: StopTransactionReason
.NONE
,
109 case BroadcastChannelProcedureName
.START_CHARGING_STATION
:
110 this.chargingStation
.start();
112 case BroadcastChannelProcedureName
.STOP_CHARGING_STATION
:
113 await this.chargingStation
.stop();
115 case BroadcastChannelProcedureName
.OPEN_CONNECTION
:
116 this.chargingStation
.openWSConnection();
118 case BroadcastChannelProcedureName
.CLOSE_CONNECTION
:
119 this.chargingStation
.closeWSConnection();
122 // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
123 throw new BaseError(`Unknown worker broadcast channel command: ${command}`);
127 private commandResponseToResponseStatus(commandResponse
: CommandResponse
): ResponseStatus
{
128 if (commandResponse
?.idTagInfo
?.status === AuthorizationStatus
.ACCEPTED
) {
129 return ResponseStatus
.SUCCESS
;
131 return ResponseStatus
.FAILURE
;