feat: watch models and engines update for proper data retrieval

Author: louis-jan

cortex-js/src/infrastructure/controllers/chat.controller.ts

@@ -33,7 +33,7 @@ export class ChatController {
     @Body() createChatDto: CreateChatCompletionDto,
     @Res() res: Response,
   ) {
-    let { stream } = createChatDto;
+    const { stream } = createChatDto;
     this.chatService
       .inference(createChatDto, extractCommonHeaders(headers))
       .then((response) => {

cortex-js/src/infrastructure/repositories/extensions/extension.repository.ts

@@ -4,7 +4,7 @@ import { Extension } from '@/domain/abstracts/extension.abstract';
 import { readdir, lstat } from 'fs/promises';
 import { join } from 'path';
 import { FileManagerService } from '@/infrastructure/services/file-manager/file-manager.service';
-import { existsSync } from 'fs';
+import { existsSync, watch } from 'fs';
 import { Engines } from '@/infrastructure/commanders/types/engine.interface';
 import { OAIEngineExtension } from '@/domain/abstracts/oai.abstract';
 import { HttpService } from '@nestjs/axios';
@@ -27,6 +27,15 @@ export class ExtensionRepositoryImpl implements ExtensionRepository {
   ) {
     this.loadCoreExtensions();
     this.loadExternalExtensions();
+    
+    // Watch engine folder only for now 
+    fileService.getCortexCppEnginePath().then(path => 
+      watch(path, (eventType, filename) => {
+        this.extensions.clear();
+        this.loadCoreExtensions();
+        this.loadExternalExtensions();
+      })
+    )
   }
   /**
    * Persist extension to the extensions map

cortex-js/src/infrastructure/repositories/models/model.repository.ts

@@ -10,6 +10,7 @@ import {
   readdirSync,
   rmSync,
   writeFileSync,
+  watch,
 } from 'fs';
 import { load, dump } from 'js-yaml';
 import { isLocalModel, normalizeModelId } from '@/utils/normalize-model-id';
@@ -25,6 +26,12 @@ export class ModelRepositoryImpl implements ModelRepository {
 
   constructor(private readonly fileService: FileManagerService) {
     this.loadModels();
+
+    fileService.getModelsPath().then((path) =>
+      watch(path, (eventType, filename) => {
+        this.loadModels(true);
+      }),
+    );
   }
 
   /**
@@ -121,11 +128,14 @@ export class ModelRepositoryImpl implements ModelRepository {
    * This would load all the models from the models folder
    * @returns the list of models
    */
-  private async loadModels(): Promise<Model[]> {
-    if (this.loaded) return Array.from(this.models.values());
+  private async loadModels(forceReload: boolean = false): Promise<Model[]> {
+    if (this.loaded && !forceReload) return Array.from(this.models.values());
     const modelsPath =
       process.env.EXTENSIONS_PATH ?? (await this.fileService.getModelsPath());
 
+    this.models.clear();
+    this.fileModel.clear();
+
     if (!existsSync(modelsPath)) return [];
 
     const modelFiles = readdirSync(modelsPath)