chore: remove awareness sync since it's not used (#9563)

packages/frontend/core/src/blocksuite/presets/ai/messages/slides-renderer.ts

@@ -226,7 +226,6 @@ export class AISlidesRenderer extends WithDisposable(LitElement) {
       id: 'SLIDES_PREVIEW',
     });
     collection.meta.initialize();
-    collection.start();
     const doc = collection.createDoc();
 
     doc.load(() => {

packages/frontend/core/src/blocksuite/presets/ai/mini-mindmap/mindmap-preview.ts

@@ -102,8 +102,6 @@ export class MiniMindmapPreview extends WithDisposable(LitElement) {
       schema,
     });
     collection.meta.initialize();
-    collection.start();
-
     const doc = collection.createDoc({ id: 'doc:home' }).load();
     const rootId = doc.addBlock('affine:page', {});
     const surfaceId = doc.addBlock('affine:surface', {}, rootId);

packages/frontend/core/src/modules/workspace/impls/doc.ts

@@ -142,10 +142,6 @@ export class DocImpl implements Doc {
     return this._collection;
   }
 
-  get docSync() {
-    return this.workspace.docSync;
-  }
-
   get history() {
     return this._history;
   }

packages/frontend/core/src/modules/workspace/impls/workspace.ts

@@ -17,12 +17,9 @@ import {
   type WorkspaceMeta,
 } from '@blocksuite/affine/store';
 import {
-  AwarenessEngine,
   BlobEngine,
   type BlobSource,
-  DocEngine,
   MemoryBlobSource,
-  NoopDocSource,
 } from '@blocksuite/affine/sync';
 import { Awareness } from 'y-protocols/awareness.js';
 import * as Y from 'yjs';
@@ -61,16 +58,12 @@ export class WorkspaceImpl implements Workspace {
 
   readonly awarenessStore: AwarenessStore;
 
-  readonly awarenessSync: AwarenessEngine;
-
   readonly blobSync: BlobEngine;
 
   readonly blockCollections = new Map<string, Doc>();
 
   readonly doc: Y.Doc;
 
-  readonly docSync: DocEngine;
-
   readonly id: string;
 
   readonly idGenerator: IdGenerator;
@@ -102,11 +95,8 @@ export class WorkspaceImpl implements Workspace {
     });
 
     blobSource = blobSource ?? new MemoryBlobSource();
-    const docSource = new NoopDocSource();
     const logger = new NoopLogger();
 
-    this.awarenessSync = new AwarenessEngine(this.awarenessStore.awareness, []);
-    this.docSync = new DocEngine(this.doc, docSource, [], logger);
     this.blobSync = new BlobEngine(blobSource, [], logger);
 
     this.idGenerator = nanoid;
@@ -129,10 +119,10 @@ export class WorkspaceImpl implements Workspace {
     this.meta.docMetaUpdated.on(() => this.slots.docListUpdated.emit());
 
     this.meta.docMetaRemoved.on(id => {
-      const space = this.getBlockCollection(id);
-      if (!space) return;
+      const doc = this._getDoc(id);
+      if (!doc) return;
       this.blockCollections.delete(id);
-      space.remove();
+      doc.remove();
       this.slots.docRemoved.emit(id);
     });
   }
@@ -141,14 +131,6 @@ export class WorkspaceImpl implements Workspace {
     return this.docs.has(docId);
   }
 
-  /**
-   * Verify that all data has been successfully saved to the primary storage.
-   * Return true if the data transfer is complete and it is secure to terminate the synchronization operation.
-   */
-  canGracefulStop() {
-    this.docSync.canGracefulStop();
-  }
-
   /**
    * By default, only an empty doc will be created.
    * If the `init` parameter is passed, a `surface`, `note`, and `paragraph` block
@@ -177,23 +159,13 @@ export class WorkspaceImpl implements Workspace {
     this.awarenessStore.destroy();
   }
 
-  /**
-   * Terminate the data sync process forcefully, which may cause data loss.
-   * It is advised to invoke `canGracefulStop` before calling this method.
-   */
-  forceStop() {
-    this.docSync.forceStop();
-    this.blobSync.stop();
-    this.awarenessSync.disconnect();
-  }
-
-  getBlockCollection(docId: string): Doc | null {
+  private _getDoc(docId: string): Doc | null {
     const space = this.docs.get(docId) as Doc | undefined;
     return space ?? null;
   }
 
   getDoc(docId: string, options?: GetBlocksOptions): Blocks | null {
-    const collection = this.getBlockCollection(docId);
+    const collection = this._getDoc(docId);
     return collection?.getBlocks(options) ?? null;
   }
 
@@ -206,31 +178,11 @@ export class WorkspaceImpl implements Workspace {
       );
     }
 
-    const blockCollection = this.getBlockCollection(docId);
+    const blockCollection = this._getDoc(docId);
     if (!blockCollection) return;
 
     blockCollection.dispose();
     this.meta.removeDocMeta(docId);
     this.blockCollections.delete(docId);
   }
-
-  /**
-   * Start the data sync process
-   */
-  start() {
-    this.docSync.start();
-    this.blobSync.start();
-    this.awarenessSync.connect();
-  }
-
-  /**
-   * Wait for all data has been successfully saved to the primary storage.
-   */
-  waitForGracefulStop(abort?: AbortSignal) {
-    return this.docSync.waitForGracefulStop(abort);
-  }
-
-  waitForSynced() {
-    return this.docSync.waitForSynced();
-  }
 }