X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fcharging-station%2Fui-server%2FUIHttpServer.ts;h=ce1a6ed88d085038d639b01d2f5fbbaece8c9f6f;hb=66a7748ddeda8c94d7562a1ce58d440319654a4c;hp=822244f96081305ef939ae7f107d67f9c840c1a4;hpb=b2e2c274c2f60fb80857640f0399f76cf65e169f;p=e-mobility-charging-stations-simulator.git

diff --git a/src/charging-station/ui-server/UIHttpServer.ts b/src/charging-station/ui-server/UIHttpServer.ts
index 822244f9..ce1a6ed8 100644
--- a/src/charging-station/ui-server/UIHttpServer.ts
+++ b/src/charging-station/ui-server/UIHttpServer.ts
@@ -1,140 +1,161 @@
-import type { IncomingMessage, RequestListener, ServerResponse } from 'http';
+import type { IncomingMessage, RequestListener, ServerResponse } from 'node:http'
 
-import { StatusCodes } from 'http-status-codes';
+import { StatusCodes } from 'http-status-codes'
 
-import BaseError from '../../exception/BaseError';
-import type { UIServerConfiguration } from '../../types/ConfigurationData';
+import { AbstractUIServer } from './AbstractUIServer.js'
+import { UIServerUtils } from './UIServerUtils.js'
+import { BaseError } from '../../exception/index.js'
 import {
-  ProcedureName,
-  Protocol,
-  ProtocolRequest,
-  ProtocolResponse,
-  ProtocolVersion,
-  RequestPayload,
+  ApplicationProtocolVersion,
+  type ProcedureName,
+  type Protocol,
+  type ProtocolRequest,
+  type ProtocolResponse,
+  type ProtocolVersion,
+  type RequestPayload,
   ResponseStatus,
-} from '../../types/UIProtocol';
-import logger from '../../utils/Logger';
-import Utils from '../../utils/Utils';
-import { AbstractUIServer } from './AbstractUIServer';
-import { UIServiceUtils } from './ui-services/UIServiceUtils';
+  type UIServerConfiguration
+} from '../../types/index.js'
+import { Constants, generateUUID, isNotEmptyString, logPrefix, logger } from '../../utils/index.js'
 
-const moduleName = 'UIHttpServer';
+const moduleName = 'UIHttpServer'
 
-export default class UIHttpServer extends AbstractUIServer {
-  public constructor(protected readonly uiServerConfiguration: UIServerConfiguration) {
-    super(uiServerConfiguration);
+enum HttpMethods {
+  GET = 'GET',
+  PUT = 'PUT',
+  POST = 'POST',
+  PATCH = 'PATCH'
+}
+
+export class UIHttpServer extends AbstractUIServer {
+  public constructor (protected readonly uiServerConfiguration: UIServerConfiguration) {
+    super(uiServerConfiguration)
   }
 
-  public start(): void {
-    this.httpServer.on('request', this.requestListener.bind(this) as RequestListener);
-    if (this.httpServer.listening === false) {
-      this.httpServer.listen(this.uiServerConfiguration.options);
-    }
+  public start (): void {
+    this.httpServer.on('request', this.requestListener.bind(this) as RequestListener)
+    this.startHttpServer()
   }
 
-  // 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;
+  public sendResponse (response: ProtocolResponse): void {
+    const [uuid, payload] = response
     try {
-      if (this.responseHandlers.has(uuid) === true) {
-        const res = this.responseHandlers.get(uuid) as ServerResponse;
+      if (this.hasResponseHandler(uuid)) {
+        const res = this.responseHandlers.get(uuid) as ServerResponse
         res
           .writeHead(this.responseStatusToStatusCode(payload.status), {
-            'Content-Type': 'application/json',
+            'Content-Type': 'application/json'
           })
-          .end(JSON.stringify(payload));
-        this.responseHandlers.delete(uuid);
+          .end(JSON.stringify(payload))
       } else {
         logger.error(
           `${this.logPrefix(moduleName, 'sendResponse')} Response for unknown request id: ${uuid}`
-        );
+        )
       }
     } catch (error) {
       logger.error(
         `${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) {
+      if (err != null) {
         res
           .writeHead(StatusCodes.UNAUTHORIZED, {
             'Content-Type': 'text/plain',
-            'WWW-Authenticate': 'Basic realm=users',
+            'WWW-Authenticate': 'Basic realm=users'
           })
           .end(`${StatusCodes.UNAUTHORIZED} Unauthorized`)
-          .destroy();
-        req.destroy();
+          .destroy()
+        req.destroy()
       }
-    });
+    })
     // Expected request URL pathname: /ui/:version/:procedureName
     const [protocol, version, procedureName] = req.url?.split('/').slice(1) as [
       Protocol,
       ProtocolVersion,
       ProcedureName
-    ];
-    const uuid = Utils.generateUUID();
-    this.responseHandlers.set(uuid, res);
+    ]
+    const uuid = generateUUID()
+    this.responseHandlers.set(uuid, res)
     try {
-      if (UIServiceUtils.isProtocolAndVersionSupported(protocol, version) === false) {
-        throw new BaseError(`Unsupported UI protocol version: '/${protocol}/${version}'`);
+      const fullProtocol = `${protocol}${version}`
+      if (!UIServerUtils.isProtocolAndVersionSupported(fullProtocol)) {
+        throw new BaseError(`Unsupported UI protocol version: '${fullProtocol}'`)
       }
-      this.registerProtocolVersionUIService(version);
+      this.registerProtocolVersionUIService(version)
       req.on('error', (error) => {
         logger.error(
           `${this.logPrefix(moduleName, 'requestListener.req.onerror')} Error on HTTP request:`,
           error
-        );
-      });
-      if (req.method === 'POST') {
-        const bodyBuffer = [];
+        )
+      })
+      if (req.method === HttpMethods.POST) {
+        const bodyBuffer: Uint8Array[] = []
         req
-          .on('data', (chunk) => {
-            bodyBuffer.push(chunk);
+          .on('data', (chunk: Uint8Array) => {
+            bodyBuffer.push(chunk)
           })
           .on('end', () => {
-            const body = JSON.parse(Buffer.concat(bodyBuffer).toString()) as RequestPayload;
+            const body = JSON.parse(Buffer.concat(bodyBuffer).toString()) as RequestPayload
             this.uiServices
               .get(version)
-              .requestHandler(this.buildProtocolRequest(uuid, procedureName, body ?? {}))
-              .catch(() => {
-                /* Error caught by AbstractUIService */
-              });
-          });
+              ?.requestHandler(
+                this.buildProtocolRequest(
+                  uuid,
+                  procedureName,
+                  body ?? Constants.EMPTY_FROZEN_OBJECT
+                )
+              )
+              .then((protocolResponse?: ProtocolResponse) => {
+                if (protocolResponse != null) {
+                  this.sendResponse(protocolResponse)
+                }
+              })
+              .catch(Constants.EMPTY_FUNCTION)
+          })
       } else {
-        throw new BaseError(`Unsupported HTTP method: '${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
     }
   }
 }