feat(nbstore): new doc sync engine (#8918)

2026-07-13 08:06:24 +08:00 · 2024-12-07 08:05:02 +00:00
parent fafacdb265
commit f54f6e88cb
23 changed files with 1252 additions and 43 deletions
@@ -0,0 +1,43 @@
+import { PriorityQueue } from './priority-queue';
+
+export class AsyncPriorityQueue extends PriorityQueue {
+  private _resolveUpdate: (() => void) | null = null;
+  private _waitForUpdate: Promise<void> | null = null;
+
+  async asyncPop(abort?: AbortSignal): Promise<string> {
+    const update = this.pop();
+    if (update) {
+      return update;
+    } else {
+      if (!this._waitForUpdate) {
+        this._waitForUpdate = new Promise(resolve => {
+          this._resolveUpdate = resolve;
+        });
+      }
+
+      await Promise.race([
+        this._waitForUpdate,
+        new Promise((_, reject) => {
+          if (abort?.aborted) {
+            reject(abort?.reason);
+          }
+          abort?.addEventListener('abort', () => {
+            reject(abort.reason);
+          });
+        }),
+      ]);
+
+      return this.asyncPop(abort);
+    }
+  }
+
+  override push(id: string, priority: number = 0) {
+    super.push(id, priority);
+    if (this._resolveUpdate) {
+      const resolve = this._resolveUpdate;
+      this._resolveUpdate = null;
+      this._waitForUpdate = null;
+      resolve();
+    }
+  }
+}