fix(v3): eagerly dequeue messages from a queue when that queue is added to or removed from (v4 backport)

Author: ericallam

apps/webapp/app/env.server.ts

@@ -413,6 +413,14 @@ const EnvironmentSchema = z.object({
   MARQS_SHARED_WORKER_QUEUE_CONSUMER_INTERVAL_MS: z.coerce.number().int().default(250),
   MARQS_SHARED_WORKER_QUEUE_MAX_MESSAGE_COUNT: z.coerce.number().int().default(10),
 
+  MARQS_SHARED_WORKER_QUEUE_EAGER_DEQUEUE_ENABLED: z.string().default("0"),
+  MARQS_WORKER_ENABLED: z.string().default("0"),
+  MARQS_WORKER_CONCURRENCY_LIMIT: z.coerce.number().int().default(10),
+  MARQS_WORKER_CONCURRENCY_TASKS_PER_WORKER: z.coerce.number().int().default(10),
+  MARQS_WORKER_POLL_INTERVAL_MS: z.coerce.number().int().default(100),
+  MARQS_WORKER_IMMEDIATE_POLL_INTERVAL_MS: z.coerce.number().int().default(100),
+  MARQS_WORKER_SHUTDOWN_TIMEOUT_MS: z.coerce.number().int().default(60_000),
+
   PROD_TASK_HEARTBEAT_INTERVAL_MS: z.coerce.number().int().optional(),
 
   VERBOSE_GRAPHILE_LOGGING: z.string().default("false"),

apps/webapp/app/v3/marqs/index.server.ts

@@ -44,6 +44,9 @@ import {
 } from "./constants.server";
 import { setInterval } from "node:timers/promises";
 import { tryCatch } from "@trigger.dev/core/utils";
+import { Worker, type WorkerConcurrencyOptions } from "@trigger.dev/redis-worker";
+import z from "zod";
+import { Logger } from "@trigger.dev/core/logger";
 
 const KEY_PREFIX = "marqs:";
 
@@ -74,6 +77,24 @@ export type MarQSOptions = {
   subscriber?: MessageQueueSubscriber;
   sharedWorkerQueueConsumerIntervalMs?: number;
   sharedWorkerQueueMaxMessageCount?: number;
+  eagerDequeuingEnabled?: boolean;
+  workerOptions: {
+    pollIntervalMs?: number;
+    immediatePollIntervalMs?: number;
+    shutdownTimeoutMs?: number;
+    concurrency?: WorkerConcurrencyOptions;
+    enabled?: boolean;
+  };
+};
+
+const workerCatalog = {
+  processQueueForWorkerQueue: {
+    schema: z.object({
+      queueKey: z.string(),
+      parentQueueKey: z.string(),
+    }),
+    visibilityTimeoutMs: 30_000,
+  },
 };
 
 /**
@@ -83,6 +104,7 @@ export class MarQS {
   private redis: Redis;
   public keys: MarQSKeyProducer;
   #rebalanceWorkers: Array<AsyncWorker> = [];
+  private worker: Worker<typeof workerCatalog>;
 
   constructor(private readonly options: MarQSOptions) {
     this.redis = options.redis;
@@ -91,6 +113,29 @@ export class MarQS {
 
     this.#startRebalanceWorkers();
     this.#registerCommands();
+
+    this.worker = new Worker({
+      name: "marqs-worker",
+      redisOptions: {
+        ...options.redis.options,
+        keyPrefix: `${options.redis.options.keyPrefix}:worker`,
+      },
+      catalog: workerCatalog,
+      concurrency: options.workerOptions?.concurrency,
+      pollIntervalMs: options.workerOptions?.pollIntervalMs ?? 1000,
+      immediatePollIntervalMs: options.workerOptions?.immediatePollIntervalMs ?? 100,
+      shutdownTimeoutMs: options.workerOptions?.shutdownTimeoutMs ?? 10_000,
+      logger: new Logger("MarQSWorker", "info"),
+      jobs: {
+        processQueueForWorkerQueue: async (job) => {
+          await this.#processQueueForWorkerQueue(job.payload.queueKey, job.payload.parentQueueKey);
+        },
+      },
+    });
+
+    if (options.workerOptions?.enabled) {
+      this.worker.start();
+    }
   }
 
   get name() {
@@ -280,6 +325,21 @@ export class MarQS {
           span.setAttribute("reserve_recursive_queue", reserve.recursiveQueue);
         }
 
+        if (env.type !== "DEVELOPMENT" && this.options.eagerDequeuingEnabled) {
+          // This will move the message to the worker queue so it can be dequeued
+          await this.worker.enqueueOnce({
+            id: messageQueue, // dedupe by environment, queue, and concurrency key
+            job: "processQueueForWorkerQueue",
+            payload: {
+              queueKey: messageQueue,
+              parentQueueKey: parentQueue,
+            },
+            // Add a small delay to dedupe messages so at most one of these will processed,
+            // every 500ms per queue, concurrency key, and environment
+            availableAt: new Date(Date.now() + 500), // 500ms from now
+          });
+        }
+
         const result = await this.#callEnqueueMessage(messagePayload, reserve);
 
         if (result) {
@@ -870,6 +930,64 @@ export class MarQS {
     );
   }
 
+  async #processQueueForWorkerQueue(queueKey: string, parentQueueKey: string) {
+    return this.#trace("processQueueForWorkerQueue", async (span) => {
+      span.setAttributes({
+        [SemanticAttributes.QUEUE]: queueKey,
+        [SemanticAttributes.PARENT_QUEUE]: parentQueueKey,
+      });
+
+      const maxCount = this.options.sharedWorkerQueueMaxMessageCount ?? 10;
+
+      const dequeuedMessages = await this.#callDequeueMessages({
+        messageQueue: queueKey,
+        parentQueue: parentQueueKey,
+        maxCount,
+      });
+
+      if (!dequeuedMessages || dequeuedMessages.length === 0) {
+        return;
+      }
+
+      await this.#trace(
+        "addToWorkerQueue",
+        async (addToWorkerQueueSpan) => {
+          const workerQueueKey = this.keys.sharedWorkerQueueKey();
+
+          addToWorkerQueueSpan.setAttributes({
+            message_count: dequeuedMessages.length,
+            [SemanticAttributes.PARENT_QUEUE]: workerQueueKey,
+          });
+
+          await this.redis.rpush(
+            workerQueueKey,
+            ...dequeuedMessages.map((message) => message.messageId)
+          );
+        },
+        {
+          kind: SpanKind.INTERNAL,
+          attributes: {
+            [SEMATTRS_MESSAGING_OPERATION]: "receive",
+            [SEMATTRS_MESSAGING_SYSTEM]: "marqs",
+          },
+        }
+      );
+
+      // If we dequeued the max count, we need to enqueue another job to dequeue the next batch
+      if (dequeuedMessages.length === maxCount) {
+        await this.worker.enqueueOnce({
+          id: queueKey,
+          job: "processQueueForWorkerQueue",
+          payload: {
+            queueKey,
+            parentQueueKey,
+          },
+          availableAt: new Date(Date.now() + 500), // 500ms from now
+        });
+      }
+    });
+  }
+
   public async acknowledgeMessage(messageId: string, reason: string = "unknown") {
     return this.#trace(
       "acknowledgeMessage",
@@ -901,6 +1019,20 @@ export class MarQS {
           messageId,
         });
 
+        const sharedQueueKey = this.keys.sharedQueueKey();
+
+        if (this.options.eagerDequeuingEnabled && message.parentQueue === sharedQueueKey) {
+          await this.worker.enqueueOnce({
+            id: message.queue,
+            job: "processQueueForWorkerQueue",
+            payload: {
+              queueKey: message.queue,
+              parentQueueKey: message.parentQueue,
+            },
+            availableAt: new Date(Date.now() + 500), // 500ms from now
+          });
+        }
+
         await this.options.subscriber?.messageAcked(message);
       },
       {
@@ -2482,5 +2614,17 @@ function getMarQSClient() {
     subscriber: concurrencyTracker,
     sharedWorkerQueueConsumerIntervalMs: env.MARQS_SHARED_WORKER_QUEUE_CONSUMER_INTERVAL_MS,
     sharedWorkerQueueMaxMessageCount: env.MARQS_SHARED_WORKER_QUEUE_MAX_MESSAGE_COUNT,
+    eagerDequeuingEnabled: env.MARQS_SHARED_WORKER_QUEUE_EAGER_DEQUEUE_ENABLED === "1",
+    workerOptions: {
+      enabled: env.MARQS_WORKER_ENABLED === "1",
+      pollIntervalMs: env.MARQS_WORKER_POLL_INTERVAL_MS,
+      immediatePollIntervalMs: env.MARQS_WORKER_IMMEDIATE_POLL_INTERVAL_MS,
+      shutdownTimeoutMs: env.MARQS_WORKER_SHUTDOWN_TIMEOUT_MS,
+      concurrency: {
+        workers: env.MARQS_WORKER_CONCURRENCY_LIMIT,
+        tasksPerWorker: env.MARQS_WORKER_CONCURRENCY_TASKS_PER_WORKER,
+        limit: env.MARQS_WORKER_CONCURRENCY_LIMIT,
+      },
+    },
   });
 }