Cloudflare Pages Cron and Queues

[bringking]

To take full advantage of Cloudflare, workers can export other handlers besides fetch for things like consuming a Queue message, or getting triggered by a Cron. The docs show something like this -

export default {
  async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
  },
  async queue(batch: MessageBatch<any>, env: Env): Promise<void> {
  },
  async scheduled(event, env, ctx) {
  },
}

With Remix/Cloudflare, it makes sense to let the Remix build handle fetch, but how can we also specify handlers for the other entrypoints? I'm specifically using the Remix Cloudflare Pages runtime

[tavoyne]

Did you find a workaround, @bringking?

I'm also super interested in being able to schedule cron jobs in a Remix + CF Pages app.

[hi-ogawa]

I think what's your asking is a limitation of Cloudflare Pages in general.
Essentially Cloudflare pages uses Cloudflare workers for their "Function", but I think they don't expose all the feature from workers to pages. https://developers.cloudflare.com/pages/platform/functions/api-reference/ Also from their point of view, it doesn't necessary make sense to say "handle queue in this function" since their function works based on http request route.

If you use Cloudflare Workers directly, then I believe it's just a matter adding an extra code for queue, scheduled handler etc... to existing template around here:

remix/templates/cloudflare-workers/server.ts

Lines 14 to 15 in 1a8a521

	export default {
	async fetch(

While looking around their doc, I found this "Advanced mode" https://developers.cloudflare.com/pages/platform/functions/advanced-mode/ which seems to give you a full control over worker script. This might allow setting up queue handler etc... but I haven't tried.
(Note that Remix's current template use functions/[[path]].js to handle all requests as "function" which is not "advanced mode")

Either way, I think this kind of question might be better asked on cloudflare/wrangler side since people here might not be familiar with this subtle nuance.

---

EDIT: Extra note. It seems sveltekit uses "advanced mode" (_worker.js instead of functions/[[path]].js) for their cloudflare adapter, but the worker code is generated by adapter anyways, so I don't think users have control over it either https://github.com/sveltejs/kit/blob/3d98c37c09aa53d1bf8e5dcf12aef62a43afcae8/packages/adapter-cloudflare/index.js#L41

[candidia]

I'm also curious about this because the vercel remix integration allows making any route a cron if I remember right.

[hyusetiawan]

im curious to know how to accomplish this but it seems there is no way to do this currently?