batman✅ Posts - Answer Overflow

batman✅

•Created by batman✅ on 3/9/2025 in #support

Running BullMQ worker (background process) from a SolidStart project

I have a solidstart project with Redis as its backend. I'm trying to use BullMQ worker: sandboxed processor as the consumer. I'm trying to initialise it during server startup from entry-middleware.js as below:

import { createMiddleware } from "@solidjs/start/middleware";
import { authMiddleware } from "~/lib/auth/auth.middleware";
import logger from "~/lib/logger";
import { initializeAllWorkers, shutdownAllWorkers } from "~/lib/queue/bull/workers/worker.client";

// Flag to ensure we only initialize once
let workersInitialized = false;

// Store worker references for shutdown
let shutdownRegistered = false;

export default createMiddleware({
 // some logging
      
      await authMiddleware(event);
      
      // Only initialize workers once
      if (!workersInitialized && typeof window === 'undefined') {
        workersInitialized = true;
        
        logger.info('Initializing BullMQ workers from middleware...');
        
        try {
          await initializeAllWorkers();
          logger.info('BullMQ workers initialized successfully');
          
          // Register shutdown handlers (only once)
          if (!shutdownRegistered) {
            shutdownRegistered = true;
// rest of the code

import { createMiddleware } from "@solidjs/start/middleware";
import { authMiddleware } from "~/lib/auth/auth.middleware";
import logger from "~/lib/logger";
import { initializeAllWorkers, shutdownAllWorkers } from "~/lib/queue/bull/workers/worker.client";

// Flag to ensure we only initialize once
let workersInitialized = false;

// Store worker references for shutdown
let shutdownRegistered = false;

export default createMiddleware({
 // some logging
      
      await authMiddleware(event);
      
      // Only initialize workers once
      if (!workersInitialized && typeof window === 'undefined') {
        workersInitialized = true;
        
        logger.info('Initializing BullMQ workers from middleware...');
        
        try {
          await initializeAllWorkers();
          logger.info('BullMQ workers initialized successfully');
          
          // Register shutdown handlers (only once)
          if (!shutdownRegistered) {
            shutdownRegistered = true;
// rest of the code

The file worker.client.js is calling various other modules which has use server directive set. And, I'm getting the below error. I tried a similar approach from entry-server.js with the same outcome!!

 "message": "Cannot call server function outside of a request",

 "message": "Cannot call server function outside of a request",

I did some digging and it seems running background process is a bit of a pain. Has anyone tried doing anything similar? May you please help.

2 replies

SSolidJS

•Created by batman✅ on 12/27/2024 in #support

Need help debugging this error: Client-only API called on the server side. Run client-only code in

My solid start project works fine in dev mode, but when I try to do vinxi build followed by vinxi start I get the below error:

npm run start

> [email protected] start
> NODE_ENV=development DEBUG=vinxi:* vinxi start


[6:09:20 am]  ERROR  Client-only API called on the server side. Run client-only code in onMount, or conditionally run client-only component with <Show>.

  at notSup (.output/server/node_modules/solid-js/web/dist/server.js:1136:9)
  at .output/server/chunks/nitro/nitro.mjs:7177:17797
  at ModuleJob.run (node:internal/modules/esm/module_job:272:25)
  at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:552:26)
  at async Object.run (node_modules/vinxi/bin/cli.mjs:278:7)
  at async runCommand (node_modules/citty/dist/index.mjs:316:16)
  at async runCommand (node_modules/citty/dist/index.mjs:307:11)
  at async runMain (node_modules/citty/dist/index.mjs:445:7)



[6:09:20 am]  ERROR  Client-only API called on the server side. Run client-only code in onMount, or conditionally run client-only component with <Show>.

npm run start

> [email protected] start
> NODE_ENV=development DEBUG=vinxi:* vinxi start


[6:09:20 am]  ERROR  Client-only API called on the server side. Run client-only code in onMount, or conditionally run client-only component with <Show>.

  at notSup (.output/server/node_modules/solid-js/web/dist/server.js:1136:9)
  at .output/server/chunks/nitro/nitro.mjs:7177:17797
  at ModuleJob.run (node:internal/modules/esm/module_job:272:25)
  at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:552:26)
  at async Object.run (node_modules/vinxi/bin/cli.mjs:278:7)
  at async runCommand (node_modules/citty/dist/index.mjs:316:16)
  at async runCommand (node_modules/citty/dist/index.mjs:307:11)
  at async runMain (node_modules/citty/dist/index.mjs:445:7)



[6:09:20 am]  ERROR  Client-only API called on the server side. Run client-only code in onMount, or conditionally run client-only component with <Show>.

I tried addressing the problem by wrapping browser specific API calls with onMount and Show, but I have had no luck so far. My main issue is this error does not tell me which is the offending file and I end up playing the guessing game. Please guide me about how do I resolve this. OS: macOS 15.2 Node: 23.5.0 "@solidjs/start": "^1.0.10", "solid-js": "^1.9.2", "vinxi": "^0.5.1" What have I tried so far? - Tried running vinxi in debug mode. Probably not doing it right. - From the above trace: - .output/server/node_modules/solid-js/web/dist/server.js: 1136:9 this is most likely framework code. .output/server/chunks/nitro/nitro.mjs:7177:17797 : minified server code too

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