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edd13439 | 1 | // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved. |
953d6b02 | 2 | |
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3 | import fs from 'fs'; |
4 | import path from 'path'; | |
5 | import { fileURLToPath } from 'url'; | |
6 | ||
953d6b02 JB |
7 | import type { JSONSchemaType } from 'ajv'; |
8 | ||
78202038 | 9 | import { OCPP20ServiceUtils } from './OCPP20ServiceUtils'; |
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10 | import OCPPError from '../../../exception/OCPPError'; |
11 | import type { JsonObject, JsonType } from '../../../types/JsonType'; | |
d270cc87 | 12 | import { |
96a52d08 | 13 | type OCPP20BootNotificationRequest, |
81533a20 | 14 | type OCPP20HeartbeatRequest, |
d270cc87 | 15 | OCPP20RequestCommand, |
6e939d9e | 16 | type OCPP20StatusNotificationRequest, |
d270cc87 | 17 | } from '../../../types/ocpp/2.0/Requests'; |
953d6b02 | 18 | import { ErrorType } from '../../../types/ocpp/ErrorType'; |
d270cc87 | 19 | import { OCPPVersion } from '../../../types/ocpp/OCPPVersion'; |
953d6b02 | 20 | import type { RequestParams } from '../../../types/ocpp/Requests'; |
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21 | import Utils from '../../../utils/Utils'; |
22 | import type ChargingStation from '../../ChargingStation'; | |
4d20f040 | 23 | import OCPPConstants from '../OCPPConstants'; |
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24 | import OCPPRequestService from '../OCPPRequestService'; |
25 | import type OCPPResponseService from '../OCPPResponseService'; | |
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26 | |
27 | const moduleName = 'OCPP20RequestService'; | |
28 | ||
29 | export default class OCPP20RequestService extends OCPPRequestService { | |
b3fc3ff5 | 30 | protected jsonSchemas: Map<OCPP20RequestCommand, JSONSchemaType<JsonObject>>; |
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31 | |
32 | public constructor(ocppResponseService: OCPPResponseService) { | |
33 | if (new.target?.name === moduleName) { | |
34 | throw new TypeError(`Cannot construct ${new.target?.name} instances directly`); | |
35 | } | |
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36 | super(OCPPVersion.VERSION_20, ocppResponseService); |
37 | this.jsonSchemas = new Map<OCPP20RequestCommand, JSONSchemaType<JsonObject>>([ | |
38 | [ | |
39 | OCPP20RequestCommand.BOOT_NOTIFICATION, | |
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40 | this.parseJsonSchemaFile<OCPP20BootNotificationRequest>( |
41 | '../../../assets/json-schemas/ocpp/2.0/BootNotificationRequest.json' | |
42 | ), | |
d270cc87 | 43 | ], |
81533a20 JB |
44 | [ |
45 | OCPP20RequestCommand.HEARTBEAT, | |
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46 | this.parseJsonSchemaFile<OCPP20HeartbeatRequest>( |
47 | '../../../assets/json-schemas/ocpp/2.0/HeartbeatRequest.json' | |
48 | ), | |
81533a20 | 49 | ], |
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50 | [ |
51 | OCPP20RequestCommand.STATUS_NOTIFICATION, | |
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52 | this.parseJsonSchemaFile<OCPP20StatusNotificationRequest>( |
53 | '../../../assets/json-schemas/ocpp/2.0/StatusNotificationRequest.json' | |
54 | ), | |
6e939d9e | 55 | ], |
d270cc87 | 56 | ]); |
953d6b02 | 57 | this.buildRequestPayload.bind(this); |
953d6b02 JB |
58 | } |
59 | ||
60 | public async requestHandler<RequestType extends JsonType, ResponseType extends JsonType>( | |
61 | chargingStation: ChargingStation, | |
62 | commandName: OCPP20RequestCommand, | |
63 | commandParams?: JsonType, | |
64 | params?: RequestParams | |
65 | ): Promise<ResponseType> { | |
66 | if (OCPP20ServiceUtils.isRequestCommandSupported(chargingStation, commandName) === true) { | |
953d6b02 JB |
67 | return (await this.sendMessage( |
68 | chargingStation, | |
69 | Utils.generateUUID(), | |
18bf8274 | 70 | this.buildRequestPayload<RequestType>(chargingStation, commandName, commandParams), |
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71 | commandName, |
72 | params | |
73 | )) as unknown as ResponseType; | |
74 | } | |
75 | // OCPPError usage here is debatable: it's an error in the OCPP stack but not targeted to sendError(). | |
76 | throw new OCPPError( | |
77 | ErrorType.NOT_SUPPORTED, | |
78 | `Unsupported OCPP command '${commandName}'`, | |
79 | commandName, | |
80 | commandParams | |
81 | ); | |
82 | } | |
83 | ||
84 | private buildRequestPayload<Request extends JsonType>( | |
85 | chargingStation: ChargingStation, | |
86 | commandName: OCPP20RequestCommand, | |
87 | commandParams?: JsonType | |
88 | ): Request { | |
89 | commandParams = commandParams as JsonObject; | |
90 | switch (commandName) { | |
d270cc87 | 91 | case OCPP20RequestCommand.BOOT_NOTIFICATION: |
36c462a4 | 92 | return commandParams as unknown as Request; |
81533a20 | 93 | case OCPP20RequestCommand.HEARTBEAT: |
4d20f040 | 94 | return OCPPConstants.OCPP_RESPONSE_EMPTY as unknown as Request; |
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95 | case OCPP20RequestCommand.STATUS_NOTIFICATION: |
96 | return { | |
36c462a4 JB |
97 | timestamp: new Date(), |
98 | ...commandParams, | |
6e939d9e | 99 | } as unknown as Request; |
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100 | default: |
101 | // OCPPError usage here is debatable: it's an error in the OCPP stack but not targeted to sendError(). | |
102 | throw new OCPPError( | |
103 | ErrorType.NOT_SUPPORTED, | |
104 | // eslint-disable-next-line @typescript-eslint/restrict-template-expressions | |
105 | `Unsupported OCPP command '${commandName}'`, | |
106 | commandName, | |
107 | commandParams | |
108 | ); | |
109 | } | |
110 | } | |
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111 | |
112 | private parseJsonSchemaFile<T extends JsonType>(relativePath: string): JSONSchemaType<T> { | |
113 | return JSON.parse( | |
114 | fs.readFileSync( | |
115 | path.resolve(path.dirname(fileURLToPath(import.meta.url)), relativePath), | |
116 | 'utf8' | |
117 | ) | |
118 | ) as JSONSchemaType<T>; | |
119 | } | |
953d6b02 | 120 | } |