feat: dispose extension resources

Signed-off-by: axel7083 <[email protected]>

packages/backend/src/managers/catalogManager.ts

@@ -24,10 +24,10 @@ import type { Category } from '@shared/src/models/ICategory';
 import type { Recipe } from '@shared/src/models/IRecipe';
 import type { ModelInfo } from '@shared/src/models/IModelInfo';
 import { MSG_NEW_CATALOG_STATE } from '@shared/Messages';
-import { fs } from '@podman-desktop/api';
-import type { Webview } from '@podman-desktop/api';
+import { type Disposable, type Webview, fs } from '@podman-desktop/api';
 
-export class CatalogManager {
+export class CatalogManager implements Disposable {
+  private watchers: Map<string, Disposable> = new Map<string, Disposable>();
   private catalog: Catalog;
 
   constructor(
@@ -42,6 +42,10 @@ export class CatalogManager {
     };
   }
 
+  dispose(): void {
+    Array.from(this.watchers.values()).forEach(watcher => watcher.dispose());
+  }
+
   public getCatalog(): Catalog {
     return this.catalog;
   }
@@ -98,7 +102,11 @@ export class CatalogManager {
   }
 
   watchCatalogFile(path: string) {
+    if (this.watchers.has(path)) throw new Error(`A watcher already exist for file ${path}.`);
+
     const watcher = fs.createFileSystemWatcher(path);
+    this.watchers.set(path, watcher);
+
     watcher.onDidCreate(async () => {
       try {
         const cat = await this.readAndAnalyzeCatalog(path);

packages/backend/src/managers/modelsManager.ts

@@ -20,7 +20,7 @@ import type { LocalModelInfo } from '@shared/src/models/ILocalModelInfo';
 import fs from 'fs';
 import * as https from 'node:https';
 import * as path from 'node:path';
-import { type Webview, fs as apiFs } from '@podman-desktop/api';
+import { type Webview, fs as apiFs, Disposable } from '@podman-desktop/api';
 import { MSG_NEW_MODELS_STATE } from '@shared/Messages';
 import type { CatalogManager } from './catalogManager';
 import type { ModelInfo } from '@shared/src/models/IModelInfo';
@@ -40,7 +40,7 @@ interface DownloadModelFailureResult {
   error: string;
 }
 
-export class ModelsManager {
+export class ModelsManager implements Disposable {
   #modelsDir: string;
   #models: Map<string, ModelInfo>;
   #watcher?: podmanDesktopApi.FileSystemWatcher;
@@ -55,6 +55,11 @@ export class ModelsManager {
     this.#models = new Map();
   }
 
+  dispose(): void {
+    this.#models.clear();
+    this.#watcher.dispose();
+  }
+
   async loadLocalModels() {
     this.catalogManager.getModels().forEach(m => this.#models.set(m.id, m));
     const reloadLocalModels = async () => {

packages/backend/src/managers/podmanConnection.ts

@@ -22,6 +22,7 @@ import {
   type UpdateContainerConnectionEvent,
   containerEngine,
   type PodInfo,
+  type Disposable,
 } from '@podman-desktop/api';
 
 export type startupHandle = () => void;
@@ -31,7 +32,7 @@ export type podStartHandle = (pod: PodInfo) => void;
 export type podStopHandle = (pod: PodInfo) => void;
 export type podRemoveHandle = (podId: string) => void;
 
-export class PodmanConnection {
+export class PodmanConnection implements Disposable {
   #firstFound = false;
   #toExecuteAtStartup: startupHandle[] = [];
   #toExecuteAtMachineStop: machineStopHandle[] = [];
@@ -40,12 +41,18 @@ export class PodmanConnection {
   #toExecuteAtPodStop: podStopHandle[] = [];
   #toExecuteAtPodRemove: podRemoveHandle[] = [];
 
+  #onEventDisposable: Disposable | undefined;
+
   init(): void {
     this.listenRegistration();
     this.listenMachine();
     this.watchPods();
   }
 
+  dispose(): void {
+    this.#onEventDisposable?.dispose();
+  }
+
   listenRegistration() {
     // In case the extension has not yet registered, we listen for new registrations
     // and retain the first started podman provider
@@ -111,7 +118,9 @@ export class PodmanConnection {
   }
 
   watchPods() {
-    containerEngine.onEvent(event => {
+    if (this.#onEventDisposable !== undefined) throw new Error('already watching pods.');
+
+    this.#onEventDisposable = containerEngine.onEvent(event => {
       if (event.Type !== 'pod') {
         return;
       }

packages/backend/src/studio.ts

@@ -16,7 +16,8 @@
  * SPDX-License-Identifier: Apache-2.0
  ***********************************************************************/
 
-import type {
+import {
+  Disposable,
   ExtensionContext,
   TelemetryLogger,
   WebviewOptions,
@@ -161,6 +162,9 @@ export class Studio {
 
     // Register the instance
     this.rpcExtension.registerInstance<StudioApiImpl>(StudioApiImpl, this.studioApi);
+    this.#extensionContext.subscriptions.push(this.catalogManager);
+    this.#extensionContext.subscriptions.push(this.modelsManager);
+    this.#extensionContext.subscriptions.push(podmanConnection);
   }
 
   public async deactivate(): Promise<void> {