-import { IncomingMessage, RequestListener, Server, ServerResponse } from 'http';
+import type { IncomingMessage, ServerResponse } from 'node:http'
-import { StatusCodes } from 'http-status-codes';
+import { StatusCodes } from 'http-status-codes'
-import BaseError from '../../exception/BaseError';
-import type { ServerOptions } from '../../types/ConfigurationData';
+import { BaseError } from '../../exception/index.js'
import {
- ProcedureName,
- Protocol,
- ProtocolRequest,
- ProtocolResponse,
- ProtocolVersion,
- RequestPayload,
+ ApplicationProtocolVersion,
+ MapStringifyFormat,
+ type ProcedureName,
+ type Protocol,
+ type ProtocolRequest,
+ type ProtocolResponse,
+ type ProtocolVersion,
+ type RequestPayload,
ResponseStatus,
-} from '../../types/UIProtocol';
-import Configuration from '../../utils/Configuration';
-import logger from '../../utils/Logger';
-import Utils from '../../utils/Utils';
-import { AbstractUIServer } from './AbstractUIServer';
-import UIServiceFactory from './ui-services/UIServiceFactory';
-import { UIServiceUtils } from './ui-services/UIServiceUtils';
-
-const moduleName = 'UIHttpServer';
+ type UIServerConfiguration
+} from '../../types/index.js'
+import {
+ Constants,
+ generateUUID,
+ isNotEmptyString,
+ JSONStringify,
+ logger,
+ logPrefix
+} from '../../utils/index.js'
+import { AbstractUIServer } from './AbstractUIServer.js'
+import { isProtocolAndVersionSupported } from './UIServerUtils.js'
-type responseHandler = { procedureName: ProcedureName; res: ServerResponse };
+const moduleName = 'UIHttpServer'
-export default class UIHttpServer extends AbstractUIServer {
- private readonly responseHandlers: Map<string, responseHandler>;
+enum HttpMethods {
+ GET = 'GET',
+ PUT = 'PUT',
+ POST = 'POST',
+ PATCH = 'PATCH'
+}
- public constructor(private options?: ServerOptions) {
- super();
- this.server = new Server(this.requestListener.bind(this) as RequestListener);
- this.responseHandlers = new Map<string, responseHandler>();
+export class UIHttpServer extends AbstractUIServer {
+ public constructor (protected readonly uiServerConfiguration: UIServerConfiguration) {
+ super(uiServerConfiguration)
}
- public start(): void {
- if ((this.server as Server).listening === false) {
- (this.server as Server).listen(this.options ?? Configuration.getUIServer().options);
- }
+ public start (): void {
+ this.httpServer.on('request', this.requestListener.bind(this))
+ this.startHttpServer()
}
- public stop(): void {
- this.chargingStations.clear();
- this.responseHandlers.clear();
- }
-
- // eslint-disable-next-line @typescript-eslint/no-unused-vars
- public sendRequest(request: ProtocolRequest): void {
- // This is intentionally left blank
+ public sendRequest (request: ProtocolRequest): void {
+ switch (this.uiServerConfiguration.version) {
+ case ApplicationProtocolVersion.VERSION_20:
+ this.httpServer.emit('request', request)
+ break
+ }
}
- public sendResponse(response: ProtocolResponse): void {
- const [uuid, payload] = response;
- const statusCode = this.responseStatusToStatusCode(payload.status);
- if (this.responseHandlers.has(uuid) === true) {
- const { res } = this.responseHandlers.get(uuid);
- res.writeHead(statusCode, { 'Content-Type': 'application/json' });
- res.write(JSON.stringify(payload));
- res.end();
- this.responseHandlers.delete(uuid);
- } else {
+ public sendResponse (response: ProtocolResponse): void {
+ const [uuid, payload] = response
+ try {
+ if (this.hasResponseHandler(uuid)) {
+ const res = this.responseHandlers.get(uuid) as ServerResponse
+ res
+ .writeHead(this.responseStatusToStatusCode(payload.status), {
+ 'Content-Type': 'application/json'
+ })
+ .end(JSONStringify(payload, undefined, MapStringifyFormat.object))
+ } else {
+ logger.error(
+ `${this.logPrefix(moduleName, 'sendResponse')} Response for unknown request id: ${uuid}`
+ )
+ }
+ } catch (error) {
logger.error(
- `${this.logPrefix(moduleName, 'sendResponse')} Response for unknown request id: ${uuid}`
- );
+ `${this.logPrefix(moduleName, 'sendResponse')} Error at sending response id '${uuid}':`,
+ error
+ )
+ } finally {
+ this.responseHandlers.delete(uuid)
}
}
- public logPrefix(modName?: string, methodName?: string, prefixSuffix?: string): string {
- const logMsgPrefix = prefixSuffix ? `UI HTTP Server ${prefixSuffix}` : 'UI HTTP Server';
+ public logPrefix = (modName?: string, methodName?: string, prefixSuffix?: string): string => {
+ const logMsgPrefix = prefixSuffix != null ? `UI HTTP Server ${prefixSuffix}` : 'UI HTTP Server'
const logMsg =
- modName && methodName ? ` ${logMsgPrefix} | ${modName}.${methodName}:` : ` ${logMsgPrefix} |`;
- return Utils.logPrefix(logMsg);
+ isNotEmptyString(modName) && isNotEmptyString(methodName)
+ ? ` ${logMsgPrefix} | ${modName}.${methodName}:`
+ : ` ${logMsgPrefix} |`
+ return logPrefix(logMsg)
}
- private requestListener(req: IncomingMessage, res: ServerResponse): void {
+ private requestListener (req: IncomingMessage, res: ServerResponse): void {
+ this.authenticate(req, err => {
+ if (err != null) {
+ res
+ .writeHead(StatusCodes.UNAUTHORIZED, {
+ 'Content-Type': 'text/plain',
+ 'WWW-Authenticate': 'Basic realm=users'
+ })
+ .end(`${StatusCodes.UNAUTHORIZED} Unauthorized`)
+ res.destroy()
+ req.destroy()
+ }
+ })
// Expected request URL pathname: /ui/:version/:procedureName
const [protocol, version, procedureName] = req.url?.split('/').slice(1) as [
Protocol,
ProtocolVersion,
ProcedureName
- ];
- const uuid = Utils.generateUUID();
- this.responseHandlers.set(uuid, { procedureName, res });
+ ]
+ const uuid = generateUUID()
+ this.responseHandlers.set(uuid, res)
try {
- if (UIServiceUtils.isProtocolAndVersionSupported(protocol, version) === false) {
- throw new BaseError(`Unsupported UI protocol version: '/${protocol}/${version}'`);
+ const fullProtocol = `${protocol}${version}`
+ if (!isProtocolAndVersionSupported(fullProtocol)) {
+ throw new BaseError(`Unsupported UI protocol version: '${fullProtocol}'`)
}
- req.on('error', (error) => {
+ this.registerProtocolVersionUIService(version)
+ req.on('error', error => {
logger.error(
`${this.logPrefix(moduleName, 'requestListener.req.onerror')} Error on HTTP request:`,
error
- );
- });
- if (this.uiServices.has(version) === false) {
- this.uiServices.set(version, UIServiceFactory.getUIServiceImplementation(version, this));
- }
- if (req.method === 'POST') {
- const bodyBuffer = [];
+ )
+ })
+ if (req.method === HttpMethods.POST) {
+ const bodyBuffer: Uint8Array[] = []
req
- .on('data', (chunk) => {
- bodyBuffer.push(chunk);
+ .on('data', (chunk: Uint8Array) => {
+ bodyBuffer.push(chunk)
})
.on('end', () => {
- const body = JSON.parse(Buffer.concat(bodyBuffer).toString()) as RequestPayload;
+ let requestPayload: RequestPayload | undefined
+ try {
+ requestPayload = JSON.parse(Buffer.concat(bodyBuffer).toString()) as RequestPayload
+ } catch (error) {
+ this.sendResponse(
+ this.buildProtocolResponse(uuid, {
+ status: ResponseStatus.FAILURE,
+ errorMessage: (error as Error).message,
+ errorStack: (error as Error).stack
+ })
+ )
+ return
+ }
this.uiServices
.get(version)
- .requestHandler(this.buildProtocolRequest(uuid, procedureName, body ?? {}))
- .catch(() => {
- this.sendResponse(
- this.buildProtocolResponse(uuid, { status: ResponseStatus.FAILURE })
- );
- });
- });
+ ?.requestHandler(this.buildProtocolRequest(uuid, procedureName, requestPayload))
+ .then((protocolResponse?: ProtocolResponse) => {
+ if (protocolResponse != null) {
+ this.sendResponse(protocolResponse)
+ }
+ })
+ .catch(Constants.EMPTY_FUNCTION)
+ })
} else {
- throw new BaseError(`Unsupported HTTP method: '${req.method}'`);
+ throw new BaseError(`Unsupported HTTP method: '${req.method}'`)
}
} catch (error) {
logger.error(
`${this.logPrefix(moduleName, 'requestListener')} Handle HTTP request error:`,
error
- );
- this.sendResponse(this.buildProtocolResponse(uuid, { status: ResponseStatus.FAILURE }));
+ )
+ this.sendResponse(this.buildProtocolResponse(uuid, { status: ResponseStatus.FAILURE }))
}
}
- private responseStatusToStatusCode(status: ResponseStatus): StatusCodes {
+ private responseStatusToStatusCode (status: ResponseStatus): StatusCodes {
switch (status) {
case ResponseStatus.SUCCESS:
- return StatusCodes.OK;
+ return StatusCodes.OK
case ResponseStatus.FAILURE:
- return StatusCodes.BAD_REQUEST;
+ return StatusCodes.BAD_REQUEST
default:
- return StatusCodes.INTERNAL_SERVER_ERROR;
+ return StatusCodes.INTERNAL_SERVER_ERROR
}
}
}
repositories / e-mobility-charging-stations-simulator.git / blobdiff