feat(nbstore): add blob sync

packages/common/nbstore/src/__tests__/sync.spec.ts

@@ -3,11 +3,15 @@ import 'fake-indexeddb/auto';
 import { expect, test } from 'vitest';
 import { Doc as YDoc, encodeStateAsUpdate } from 'yjs';
 
-import { IndexedDBDocStorage, IndexedDBSyncStorage } from '../impls/idb';
+import {
+  IndexedDBBlobStorage,
+  IndexedDBDocStorage,
+  IndexedDBSyncStorage,
+} from '../impls/idb';
 import { SpaceStorage } from '../storage';
 import { SyncEngine } from '../sync';
 
-test('sync', async () => {
+test('doc', async () => {
   const doc = new YDoc();
   doc.getMap('test').set('hello', 'world');
   const update = encodeStateAsUpdate(doc);
@@ -83,3 +87,69 @@ test('sync', async () => {
     expect(c?.bin).toEqual(update2);
   }
 });
+
+test('blob', async () => {
+  const a = new IndexedDBBlobStorage({
+    id: 'ws1',
+    peer: 'a',
+    type: 'workspace',
+  });
+
+  const b = new IndexedDBBlobStorage({
+    id: 'ws1',
+    peer: 'b',
+    type: 'workspace',
+  });
+
+  const c = new IndexedDBBlobStorage({
+    id: 'ws1',
+    peer: 'c',
+    type: 'workspace',
+  });
+
+  await a.set({
+    key: 'test',
+    data: new Uint8Array([1, 2, 3, 4]),
+    mime: 'text/plain',
+    createdAt: new Date(100),
+  });
+
+  await c.set({
+    key: 'test2',
+    data: new Uint8Array([4, 3, 2, 1]),
+    mime: 'text/plain',
+    createdAt: new Date(100),
+  });
+
+  const peerA = new SpaceStorage([a]);
+  const peerB = new SpaceStorage([b]);
+  const peerC = new SpaceStorage([c]);
+
+  await peerA.connect();
+  await peerB.connect();
+  await peerC.connect();
+
+  const sync = new SyncEngine(peerA, [peerB, peerC]);
+  const abort = new AbortController();
+  sync.run(abort.signal);
+
+  await new Promise(resolve => setTimeout(resolve, 1000));
+
+  {
+    const a = await peerA.get('blob').get('test');
+    expect(a).not.toBeNull();
+    expect(a?.data).toEqual(new Uint8Array([1, 2, 3, 4]));
+  }
+
+  {
+    const b = await peerB.get('blob').get('test');
+    expect(b).not.toBeNull();
+    expect(b?.data).toEqual(new Uint8Array([1, 2, 3, 4]));
+  }
+
+  {
+    const c = await peerC.get('blob').get('test2');
+    expect(c).not.toBeNull();
+    expect(c?.data).toEqual(new Uint8Array([4, 3, 2, 1]));
+  }
+});

packages/common/nbstore/src/storage/blob.ts

@@ -21,9 +21,13 @@ export abstract class BlobStorage<
 > extends Storage<Options> {
   override readonly storageType = 'blob';
 
-  abstract get(key: string): Promise<BlobRecord | null>;
-  abstract set(blob: BlobRecord): Promise<void>;
-  abstract delete(key: string, permanently: boolean): Promise<void>;
-  abstract release(): Promise<void>;
-  abstract list(): Promise<ListedBlobRecord[]>;
+  abstract get(key: string, signal?: AbortSignal): Promise<BlobRecord | null>;
+  abstract set(blob: BlobRecord, signal?: AbortSignal): Promise<void>;
+  abstract delete(
+    key: string,
+    permanently: boolean,
+    signal?: AbortSignal
+  ): Promise<void>;
+  abstract release(signal?: AbortSignal): Promise<void>;
+  abstract list(signal?: AbortSignal): Promise<ListedBlobRecord[]>;
 }

packages/common/nbstore/src/sync/blob/index.ts

@@ -0,0 +1,89 @@
+import { difference } from 'lodash-es';
+
+import type { BlobStorage } from '../../storage';
+import { MANUALLY_STOP, throwIfAborted } from '../../utils/throw-if-aborted';
+
+export class BlobSyncEngine {
+  constructor(
+    readonly local: BlobStorage,
+    readonly remotes: BlobStorage[]
+  ) {}
+
+  private async sync(signal?: AbortSignal) {
+    throwIfAborted(signal);
+
+    for (const remote of this.remotes) {
+      let localList: string[] = [];
+      let remoteList: string[] = [];
+
+      try {
+        localList = (await this.local.list(signal)).map(b => b.key);
+        throwIfAborted(signal);
+        remoteList = (await remote.list(signal)).map(b => b.key);
+        throwIfAborted(signal);
+      } catch (err) {
+        if (err === MANUALLY_STOP) {
+          throw err;
+        }
+        console.error(`error when sync`, err);
+        continue;
+      }
+
+      const needUpload = difference(localList, remoteList);
+      for (const key of needUpload) {
+        try {
+          const data = await this.local.get(key, signal);
+          throwIfAborted(signal);
+          if (data) {
+            await remote.set(data, signal);
+            throwIfAborted(signal);
+          }
+        } catch (err) {
+          if (err === MANUALLY_STOP) {
+            throw err;
+          }
+          console.error(
+            `error when sync ${key} from [${this.local.peer}] to [${remote.peer}]`,
+            err
+          );
+        }
+      }
+
+      const needDownload = difference(remoteList, localList);
+
+      for (const key of needDownload) {
+        try {
+          const data = await remote.get(key, signal);
+          throwIfAborted(signal);
+          if (data) {
+            await this.local.set(data, signal);
+            throwIfAborted(signal);
+          }
+        } catch (err) {
+          if (err === MANUALLY_STOP) {
+            throw err;
+          }
+          console.error(
+            `error when sync ${key} from [${remote.peer}] to [${this.local.peer}]`,
+            err
+          );
+        }
+      }
+    }
+  }
+
+  async run(signal?: AbortSignal) {
+    if (signal?.aborted) {
+      return;
+    }
+
+    try {
+      await this.sync(signal);
+    } catch (error) {
+      if (error === MANUALLY_STOP) {
+        return;
+      }
+      console.error('sync blob error', error);
+    }
+  }
+}

packages/common/nbstore/src/sync/doc/peer.ts

@@ -620,7 +620,19 @@ export class DocSyncPeer {
 
   setPriority(docId: string, priority: number) {
     this.prioritySettings.set(docId, priority);
-    this.status.jobDocQueue.updatePriority(docId, priority);
+    return this.status.jobDocQueue.setPriority(docId, priority);
+  }
+
+  addPriority(id: string, priority: number) {
+    const oldPriority = this.prioritySettings.get(id) ?? 0;
+    this.prioritySettings.set(id, priority);
+    this.status.jobDocQueue.setPriority(id, oldPriority + priority);
+
+    return () => {
+      const currentPriority = this.prioritySettings.get(id) ?? 0;
+      this.prioritySettings.set(id, currentPriority - priority);
+      this.status.jobDocQueue.setPriority(id, currentPriority - priority);
+    };
   }
 
   protected mergeUpdates(updates: Uint8Array[]) {

packages/common/nbstore/src/sync/index.ts

@@ -1,4 +1,5 @@
-import type { DocStorage, SpaceStorage } from '../storage';
+import type { BlobStorage, DocStorage, SpaceStorage } from '../storage';
+import { BlobSyncEngine } from './blob';
 import { DocSyncEngine } from './doc';
 
 export class SyncEngine {
@@ -9,15 +10,30 @@ export class SyncEngine {
 
   async run(signal?: AbortSignal) {
     const doc = this.local.tryGet('doc');
+    const blob = this.local.tryGet('blob');
     const sync = this.local.tryGet('sync');
 
-    if (doc && sync) {
-      const peerDocs = this.peers
-        .map(peer => peer.tryGet('doc'))
-        .filter((v): v is DocStorage => !!v);
+    await Promise.allSettled([
+      (async () => {
+        if (doc && sync) {
+          const peerDocs = this.peers
+            .map(peer => peer.tryGet('doc'))
+            .filter((v): v is DocStorage => !!v);
 
-      const engine = new DocSyncEngine(doc, sync, peerDocs);
-      await engine.run(signal);
-    }
+          const engine = new DocSyncEngine(doc, sync, peerDocs);
+          await engine.run(signal);
+        }
+      })(),
+      (async () => {
+        if (blob) {
+          const peerBlobs = this.peers
+            .map(peer => peer.tryGet('blob'))
+            .filter((v): v is BlobStorage => !!v);
+
+          const engine = new BlobSyncEngine(blob, peerBlobs);
+          await engine.run(signal);
+        }
+      })(),
+    ]);
   }
 }

packages/common/nbstore/src/utils/priority-queue.ts

@@ -57,7 +57,7 @@ export class PriorityQueue {
     this.priorityMap.clear();
   }
 
-  updatePriority(id: string, priority: number) {
+  setPriority(id: string, priority: number) {
     if (this.remove(id)) {
       this.push(id, priority);
     }