refactor(queue): wrap ioredis as bullmq adapter behind QueueAdapter interface

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/queue/src/adapters/bullmq.ts

@@ -0,0 +1,50 @@
+import Redis from 'ioredis';
+
+import type { QueueAdapter, QueueConfig, TaskPayload } from '../types.js';
+
+const DEFAULT_VALKEY_URL = 'redis://localhost:6380';
+
+export function createBullMQAdapter(config: QueueConfig): QueueAdapter {
+  if (config.type !== 'bullmq') {
+    throw new Error(`Expected config type "bullmq", got "${config.type}"`);
+  }
+
+  const url = config.url ?? process.env['VALKEY_URL'] ?? DEFAULT_VALKEY_URL;
+  const redis = new Redis(url, { maxRetriesPerRequest: 3 });
+
+  return {
+    name: 'bullmq',
+
+    async enqueue(queueName: string, payload: TaskPayload): Promise<void> {
+      await redis.lpush(queueName, JSON.stringify(payload));
+    },
+
+    async dequeue(queueName: string): Promise<TaskPayload | null> {
+      const item = await redis.rpop(queueName);
+      if (!item) return null;
+      return JSON.parse(item) as TaskPayload;
+    },
+
+    async length(queueName: string): Promise<number> {
+      return redis.llen(queueName);
+    },
+
+    async publish(channel: string, message: string): Promise<void> {
+      await redis.publish(channel, message);
+    },
+
+    subscribe(channel: string, handler: (message: string) => void): () => void {
+      const sub = redis.duplicate();
+      sub.subscribe(channel).catch(() => {});
+      sub.on('message', (_ch: string, msg: string) => handler(msg));
+      return () => {
+        sub.unsubscribe(channel).catch(() => {});
+        sub.disconnect();
+      };
+    },
+
+    async close(): Promise<void> {
+      await redis.quit();
+    },
+  };
+}

packages/queue/src/index.ts

@@ -9,3 +9,9 @@ export {
 
 export { type QueueAdapter, type QueueConfig as QueueAdapterConfig } from './types.js';
 export { createQueueAdapter, registerQueueAdapter } from './factory.js';
+export { createBullMQAdapter } from './adapters/bullmq.js';
+
+import { registerQueueAdapter } from './factory.js';
+import { createBullMQAdapter } from './adapters/bullmq.js';
+
+registerQueueAdapter('bullmq', createBullMQAdapter);