feat: open-webui playground prototype

packages/backend/src/managers/playgroundV2Manager.ts

@@ -36,6 +36,8 @@ import { getRandomString } from '../utils/randomUtils';
 import type { TaskRegistry } from '../registries/TaskRegistry';
 import type { CancellationTokenRegistry } from '../registries/CancellationTokenRegistry';
 import { getHash } from '../utils/sha';
+import type { ConfigurationRegistry } from '../registries/ConfigurationRegistry';
+import type { PodmanConnection } from './podmanConnection';
 
 export class PlaygroundV2Manager implements Disposable {
   #conversationRegistry: ConversationRegistry;
@@ -46,17 +48,24 @@ export class PlaygroundV2Manager implements Disposable {
     private taskRegistry: TaskRegistry,
     private telemetry: TelemetryLogger,
     private cancellationTokenRegistry: CancellationTokenRegistry,
+    configurationRegistry: ConfigurationRegistry,
+    podmanConnection: PodmanConnection,
   ) {
-    this.#conversationRegistry = new ConversationRegistry(webview);
+    this.#conversationRegistry = new ConversationRegistry(
+      webview,
+      configurationRegistry,
+      taskRegistry,
+      podmanConnection,
+    );
   }
 
-  deleteConversation(conversationId: string): void {
+  async deleteConversation(conversationId: string): Promise<void> {
     const conversation = this.#conversationRegistry.get(conversationId);
     this.telemetry.logUsage('playground.delete', {
       totalMessages: conversation.messages.length,
       modelId: getHash(conversation.modelId),
     });
-    this.#conversationRegistry.deleteConversation(conversationId);
+    await this.#conversationRegistry.deleteConversation(conversationId);
   }
 
   async requestCreatePlayground(name: string, model: ModelInfo): Promise<string> {
@@ -117,11 +126,11 @@ export class PlaygroundV2Manager implements Disposable {
     }
 
     // Create conversation
-    const conversationId = this.#conversationRegistry.createConversation(name, model.id);
+    const conversationId = await this.#conversationRegistry.createConversation(name, model.id);
 
     // create/start inference server if necessary
     const servers = this.inferenceManager.getServers();
-    const server = servers.find(s => s.models.map(mi => mi.id).includes(model.id));
+    let server = servers.find(s => s.models.map(mi => mi.id).includes(model.id));
     if (!server) {
       await this.inferenceManager.createInferenceServer(
         await withDefaultConfiguration({
@@ -131,10 +140,15 @@ export class PlaygroundV2Manager implements Disposable {
           },
         }),
       );
+      server = this.inferenceManager.findServerByModel(model);
     } else if (server.status === 'stopped') {
       await this.inferenceManager.startInferenceServer(server.container.containerId);
     }
 
+    if (server && server.status === 'running') {
+      await this.#conversationRegistry.startConversationContainer(server, trackingId, conversationId);
+    }
+
     return conversationId;
   }
 

packages/backend/src/registries/ConfigurationRegistry.ts

@@ -79,6 +79,10 @@ export class ConfigurationRegistry extends Publisher<ExtensionConfiguration> imp
     return path.join(this.appUserDirectory, 'models');
   }
 
+  public getConversationsPath(): string {
+    return path.join(this.appUserDirectory, 'conversations');
+  }
+
   dispose(): void {
     this.#configurationDisposable?.dispose();
   }

packages/backend/src/registries/ConversationRegistry.ts

@@ -25,14 +25,38 @@ import type {
   Message,
   PendingChat,
 } from '@shared/src/models/IPlaygroundMessage';
-import type { Disposable, Webview } from '@podman-desktop/api';
+import {
+  type Disposable,
+  type Webview,
+  type ContainerCreateOptions,
+  containerEngine,
+  type ContainerProviderConnection,
+  type ImageInfo,
+  type PullEvent,
+} from '@podman-desktop/api';
 import { Messages } from '@shared/Messages';
+import type { ConfigurationRegistry } from './ConfigurationRegistry';
+import path from 'node:path';
+import fs from 'node:fs';
+import type { InferenceServer } from '@shared/src/models/IInference';
+import { getFreeRandomPort } from '../utils/ports';
+import { DISABLE_SELINUX_LABEL_SECURITY_OPTION } from '../utils/utils';
+import { getImageInfo } from '../utils/inferenceUtils';
+import type { TaskRegistry } from './TaskRegistry';
+import type { PodmanConnection } from '../managers/podmanConnection';
+
+const OPEN_WEBUI_IMAGE = 'ghcr.io/open-webui/open-webui:dev';
 
 export class ConversationRegistry extends Publisher<Conversation[]> implements Disposable {
   #conversations: Map<string, Conversation>;
   #counter: number;
 
-  constructor(webview: Webview) {
+  constructor(
+    webview: Webview,
+    private configurationRegistry: ConfigurationRegistry,
+    private taskRegistry: TaskRegistry,
+    private podmanConnection: PodmanConnection,
+  ) {
     super(webview, Messages.MSG_CONVERSATIONS_UPDATE, () => this.getAll());
     this.#conversations = new Map<string, Conversation>();
     this.#counter = 0;
@@ -76,13 +100,32 @@ export class ConversationRegistry extends Publisher<Conversation[]> implements D
     this.notify();
   }
 
-  deleteConversation(id: string): void {
+  async deleteConversation(id: string): Promise<void> {
+    const conversation = this.get(id);
+    if (conversation.container) {
+      await containerEngine.stopContainer(conversation.container?.engineId, conversation.container?.containerId);
+    }
+    await fs.promises.rm(path.join(this.configurationRegistry.getConversationsPath(), id), {
+      recursive: true,
+      force: true,
+    });
     this.#conversations.delete(id);
     this.notify();
   }
 
-  createConversation(name: string, modelId: string): string {
+  async createConversation(name: string, modelId: string): Promise<string> {
     const conversationId = this.getUniqueId();
+    const conversationFolder = path.join(this.configurationRegistry.getConversationsPath(), conversationId);
+    await fs.promises.mkdir(conversationFolder, {
+      recursive: true,
+    });
+    //WARNING: this will not work in production mode but didn't find how to embed binary assets
+    //this code get an initialized database so that default user is not admin thus did not get the initial
+    //welcome modal dialog
+    await fs.promises.copyFile(
+      path.join(__dirname, '..', 'src', 'assets', 'webui.db'),
+      path.join(conversationFolder, 'webui.db'),
+    );
     this.#conversations.set(conversationId, {
       name: name,
       modelId: modelId,
@@ -93,6 +136,77 @@ export class ConversationRegistry extends Publisher<Conversation[]> implements D
     return conversationId;
   }
 
+  async startConversationContainer(server: InferenceServer, trackingId: string, conversationId: string): Promise<void> {
+    const conversation = this.get(conversationId);
+    const port = await getFreeRandomPort('127.0.0.1');
+    const connection = await this.podmanConnection.getConnectionByEngineId(server.container.engineId);
+    await this.pullImage(connection, OPEN_WEBUI_IMAGE, {
+      trackingId: trackingId,
+    });
+    const inferenceServerContainer = await containerEngine.inspectContainer(
+      server.container.engineId,
+      server.container.containerId,
+    );
+    const options: ContainerCreateOptions = {
+      Env: [
+        'DEFAULT_LOCALE=en-US',
+        'WEBUI_AUTH=false',
+        'ENABLE_OLLAMA_API=false',
+        `OPENAI_API_BASE_URL=http://${inferenceServerContainer.NetworkSettings.IPAddress}:8000/v1`,
+        'OPENAI_API_KEY=sk_dummy',
+        `WEBUI_URL=http://localhost:${port}`,
+        `DEFAULT_MODELS=/models/${server.models[0].file?.file}`,
+      ],
+      Image: OPEN_WEBUI_IMAGE,
+      HostConfig: {
+        AutoRemove: true,
+        Mounts: [
+          {
+            Source: path.join(this.configurationRegistry.getConversationsPath(), conversationId),
+            Target: '/app/backend/data',
+            Type: 'bind',
+          },
+        ],
+        PortBindings: {
+          '8080/tcp': [
+            {
+              HostPort: `${port}`,
+            },
+          ],
+        },
+        SecurityOpt: [DISABLE_SELINUX_LABEL_SECURITY_OPTION],
+      },
+    };
+    const c = await containerEngine.createContainer(server.container.engineId, options);
+    conversation.container = { engineId: c.engineId, containerId: c.id, port };
+  }
+
+  protected pullImage(
+    connection: ContainerProviderConnection,
+    image: string,
+    labels: { [id: string]: string },
+  ): Promise<ImageInfo> {
+    // Creating a task to follow pulling progress
+    const pullingTask = this.taskRegistry.createTask(`Pulling ${image}.`, 'loading', labels);
+
+    // get the default image info for this provider
+    return getImageInfo(connection, image, (_event: PullEvent) => {})
+      .catch((err: unknown) => {
+        pullingTask.state = 'error';
+        pullingTask.progress = undefined;
+        pullingTask.error = `Something went wrong while pulling ${image}: ${String(err)}`;
+        throw err;
+      })
+      .then(imageInfo => {
+        pullingTask.state = 'success';
+        pullingTask.progress = undefined;
+        return imageInfo;
+      })
+      .finally(() => {
+        this.taskRegistry.updateTask(pullingTask);
+      });
+  }
+
   /**
    * This method will be responsible for finalizing the message by concatenating all the choices
    * @param conversationId

packages/backend/src/studio-api-impl.ts

@@ -87,9 +87,9 @@ export class StudioApiImpl implements StudioAPI {
     // Do not wait on the promise as the api would probably timeout before the user answer.
     podmanDesktopApi.window
       .showWarningMessage(`Are you sure you want to delete this playground ?`, 'Confirm', 'Cancel')
-      .then((result: string | undefined) => {
+      .then(async (result: string | undefined) => {
         if (result === 'Confirm') {
-          this.playgroundV2.deleteConversation(conversationId);
+          await this.playgroundV2.deleteConversation(conversationId);
         }
       })
       .catch((err: unknown) => {

packages/backend/src/studio.ts

@@ -316,6 +316,8 @@ export class Studio {
       this.#taskRegistry,
       this.#telemetry,
       this.#cancellationTokenRegistry,
+      this.#configurationRegistry,
+      this.#podmanConnection,
     );
     this.#extensionContext.subscriptions.push(this.#playgroundManager);