Send slack alert on job fail

[trail basin]

Whats the best way to send an alert when a workflow fails? Should I wrap the entire thing in a try catch? Thanks for the help

[sullen halo]

Currently the best way is to use try catch. Like this:

try {
//...code
} catch (error) {
  if (isTriggerError(error)) throw error;

  //do slack alert, e.g.
  io.slack.postMessage("error alert", {
      channel: process.env.SLACK_CHANNEL_ID!,
      // Include text for notifications and blocks to get a rich Slack message in the channel
      text: `Run failed (${ctx.environment.type}).\n${error instanceof Error ? error.message : JSON.stringify(error}`,
}

Make sure you do this:
if (isTriggerError(error)) throw error;

More info here: https://trigger.dev/docs/sdk/istriggererror

We're going to add some callback to the Job definition like onSuccess, onError to make this easier

[scarlet otter]

@trail basin we've just released run notifications to make this much easier: https://trigger.dev/changelog/run-notifications

[small hearth]

Hi @scarlet otter . I don't really understand what happens after subscribing to these notifications.
let's say I want to run another task to send an email using resend, I don't seem to have access to anything else than notification:

onFailure: async (notification) => { console.log("Job failed", notification); },
How could I "react" to those?

Thanks in advance!

[scarlet otter]

I would invoke a job to do that, just make sure you aren’t causing an infinite loop by invoking the “send email” job when the “send email” job itself fails

[small hearth]

thanks! I'll try that 🙂

[mortal sparrow]

@sullen halo any chance I can get custom slack notifications like this in v3?

failed slack alerts are pretty cool already, but I'd love to send a link to an internal log as well

[sullen halo]

What are we missing from our Slack alerts that you want? The investigate button?

We have alert webhooks with a really nice SDK experience thats like the Stripe webhook experience

[mortal sparrow]

@sullen halo I love it. I just want to add additional info to a failed run.

Like the investigate button pointing to trigger, I want to have another link pointing to my internal log tool (just a link on the internet) with url search params of timerange of the run that failed

so the alert webhooks you're saying, I can config them in my trigger task to send out to my slack channel?

[sullen halo]

No, you add them from the dashboard "Alerts" page. Select webhook, then you receive it on your server somewhere.