How can I add cron job to `wrangler.json` file?

sithu · 2025-02-02T04:46:25.614Z

I used svelitekit framework template and hosted to workers. I see this in my `wrangler.json` file: ```json "main": ".svelte-kit/cloudflare/_worker.js" ``` How can I add cron job to that file? How can I extand that file to cron job?

W

Walshy•2/2/25, 5:21 AM

https://developers.cloudflare.com/workers/examples/cron-trigger/

Cloudflare Docs

Setting Cron Triggers · Cloudflare Workers docs

Set a Cron Trigger for your Worker.

W

Walshy•2/2/25, 5:21 AM

https://i.walshy.dev/vZ6vbY0TKxMluJ4bMv.png

WWalshy https://developers.cloudflare.com/workers/examples/cron-trigger/

S

sithuOP•2/2/25, 6:15 AM

where can I place this code?

interface Env {}
export default {
  async scheduled(
    controller: ScheduledController,
    env: Env,
    ctx: ExecutionContext,
  ) {
    console.log("cron processed");
  },
};

interface Env {}
export default {
  async scheduled(
    controller: ScheduledController,
    env: Env,
    ctx: ExecutionContext,
  ) {
    console.log("cron processed");
  },
};

interface Env {}
export default {
  async scheduled(
    controller: ScheduledController,
    env: Env,
    ctx: ExecutionContext,
  ) {
    console.log("cron processed");
  },
};

interface Env {}
export default {
  async scheduled(
    controller: ScheduledController,
    env: Env,
    ctx: ExecutionContext,
  ) {
    console.log("cron processed");
  },
};

W

Walshy•2/2/25, 6:16 AM

Probably a question for SvelteKit people, I don't know if they allow setting things like cron triggers and from the original post, it seems they control the whole worker

Ssithu where can I place this code? ``` interface Env {} export default { async sched...

H

Hello, I’m Allie!•2/2/25, 6:25 AM

I shim it in manually, but note that this only works with deployed Workers/wrangler dev

H

Hello, I’m Allie!•2/2/25, 6:25 AM

It won’t run when using Svelte’s own Dev Process

H

Hello, I’m Allie!•2/2/25, 6:26 AM

https://github.com/helloimalastair/authrora/blob/main/src/worker.ts

GitHub

authrora/src/worker.ts at main · helloimalastair/authrora

Authentication and Authorization at the Edge. Contribute to helloimalastair/authrora development by creating an account on GitHub.

S

sithuOP•2/2/25, 6:26 AM

How about like this?
I got this from gpt:

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

// Merge SvelteKit's worker with our cron handler
export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event));
  }
};

async function handleCronJob(event: ScheduledEvent) {
  console.log(`Cron ${event.cron} triggered at ${new Date().toISOString()}`);
  // Add your cron logic here
}

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

// Merge SvelteKit's worker with our cron handler
export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event));
  }
};

async function handleCronJob(event: ScheduledEvent) {
  console.log(`Cron ${event.cron} triggered at ${new Date().toISOString()}`);
  // Add your cron logic here
}

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

// Merge SvelteKit's worker with our cron handler
export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event));
  }
};

async function handleCronJob(event: ScheduledEvent) {
  console.log(`Cron ${event.cron} triggered at ${new Date().toISOString()}`);
  // Add your cron logic here
}

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

// Merge SvelteKit's worker with our cron handler
export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event));
  }
};

async function handleCronJob(event: ScheduledEvent) {
  console.log(`Cron ${event.cron} triggered at ${new Date().toISOString()}`);
  // Add your cron logic here
}

Ssithu How about like this? I got this from gpt: ```ts import worker from "./../../../....

H

Hello, I’m Allie!•2/2/25, 6:27 AM

That looks like it might work? Then you just need to point your main towards that, instead of the sveltekit output

HHello, I’m Allie!https://github.com/helloimalastair/authrora/blob/main/src/worker.ts

S

sithuOP•2/2/25, 6:27 AM

Is this working?

Ssithu Is this working?

H

Hello, I’m Allie!•2/2/25, 6:29 AM

Yes, I have this deployed right now

S

sithuOP•2/2/25, 6:30 AM

Then I might use that method

S

sithuOP•2/2/25, 6:56 AM

@HardlyWorkin', hey just a suggestion, this method works too:

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

interface Env {
  DB: D1Database;
}

export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event)); // Pass env if needed
  }
};

async function handleCronJob(event: ScheduledEvent) {
  const cron = event.cron;
  const time = new Date(event.scheduledTime).toISOString();

  console.log(`Cron ${cron} triggered at ${time}`);

  switch (cron) {
    case "* * * * *":
      await minuteJob();
      break;
    case "0 * * * *":
      await hourlyJob();
      break;
    case "0 0 * * *":
      await dailyJob();
      break;
    default:
      console.warn("Unknown cron pattern:", cron);
  }
}

// Example jobs
async function minuteJob() {
  // Every minute logic
  console.log("Minute job...");
}

async function hourlyJob() {
  // Hourly logic (at :00)
}

async function dailyJob() {
  // Daily midnight logic
}

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

interface Env {
  DB: D1Database;
}

export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event)); // Pass env if needed
  }
};

async function handleCronJob(event: ScheduledEvent) {
  const cron = event.cron;
  const time = new Date(event.scheduledTime).toISOString();

  console.log(`Cron ${cron} triggered at ${time}`);

  switch (cron) {
    case "* * * * *":
      await minuteJob();
      break;
    case "0 * * * *":
      await hourlyJob();
      break;
    case "0 0 * * *":
      await dailyJob();
      break;
    default:
      console.warn("Unknown cron pattern:", cron);
  }
}

// Example jobs
async function minuteJob() {
  // Every minute logic
  console.log("Minute job...");
}

async function hourlyJob() {
  // Hourly logic (at :00)
}

async function dailyJob() {
  // Daily midnight logic
}

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

interface Env {
  DB: D1Database;
}

export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event)); // Pass env if needed
  }
};

async function handleCronJob(event: ScheduledEvent) {
  const cron = event.cron;
  const time = new Date(event.scheduledTime).toISOString();

  console.log(`Cron ${cron} triggered at ${time}`);

  switch (cron) {
    case "* * * * *":
      await minuteJob();
      break;
    case "0 * * * *":
      await hourlyJob();
      break;
    case "0 0 * * *":
      await dailyJob();
      break;
    default:
      console.warn("Unknown cron pattern:", cron);
  }
}

// Example jobs
async function minuteJob() {
  // Every minute logic
  console.log("Minute job...");
}

async function hourlyJob() {
  // Hourly logic (at :00)
}

async function dailyJob() {
  // Daily midnight logic
}

import worker from "./../../../../.svelte-kit/cloudflare/_worker.js";

interface Env {
  DB: D1Database;
}

export default {
  ...worker,
  async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
    ctx.waitUntil(handleCronJob(event)); // Pass env if needed
  }
};

async function handleCronJob(event: ScheduledEvent) {
  const cron = event.cron;
  const time = new Date(event.scheduledTime).toISOString();

  console.log(`Cron ${cron} triggered at ${time}`);

  switch (cron) {
    case "* * * * *":
      await minuteJob();
      break;
    case "0 * * * *":
      await hourlyJob();
      break;
    case "0 0 * * *":
      await dailyJob();
      break;
    default:
      console.warn("Unknown cron pattern:", cron);
  }
}

// Example jobs
async function minuteJob() {
  // Every minute logic
  console.log("Minute job...");
}

async function hourlyJob() {
  // Hourly logic (at :00)
}

async function dailyJob() {
  // Daily midnight logic
}

S

sithuOP•2/2/25, 6:57 AM

after multiple trial failed, it is working now

S

sithuOP•2/2/25, 11:38 AM

@Hello, I’m Allie! you are the svelte guy, right? Do you know how to setup trpc?

Ssithu @Hello, I’m Allie! you are the svelte guy, right? Do you know how to setup trpc?

H

Hello, I’m Allie!•2/2/25, 11:51 AM

I mean, I do use Svelte in my own projects, but I wouldn’t say I’m an expert at it. As for tRPC, I’m afraid I haven’t used it before, so I wouldn’t know any more about setting it up than you

HHello, I’m Allie!I mean, I do use Svelte in my own projects, but I wouldn’t say I’m an expert at ...

S

sithuOP•2/2/25, 11:52 AM

it is oaky, I mean I looked up the project you provided, you seems have experiences in Svelte a lot

Ssithu it is oaky, I mean I looked up the project you provided, you seems have experien...

H

Hello, I’m Allie!•2/2/25, 12:43 PM

Not really, other than a few sandbox projects with 1-2 files, this was actually my first larger project with Svelte(Kit). But thank you for the vote of confidence!

H

Hello, I’m Allie!•2/2/25, 12:51 PM

Actually, nvm, WDOL is also written in SvelteKit… point still stands though, I’m definitely no expert!

HHello, I’m Allie!Actually, nvm, WDOL is also written in SvelteKit… point still stands though, I’m...

S

sithuOP•2/2/25, 12:59 PM

hey I found this one: https://github.com/ottomated/create-o7-app

GitHub

GitHub - ottomated/create-o7-app: An opinionated CLI for creating t...

An opinionated CLI for creating type-safe Svelte apps. - ottomated/create-o7-app

How can I add cron job to `wrangler.json` file?

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