Jobs

A Job defines what event triggers it and what should happen when it is run.

For example, you can create a Job that will send an email to a user when they sign up for your app.

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Anatomy of a Job

A Job is made up of a few things:

1. Metadata
2. A Trigger (what event should cause this job to run)
3. The Run function (what should happen when this job runs)

//Job definition – uses the client
client.defineJob({
  // 1. Metadata
  id: "event-1",
  name: "Run when the foo.bar event happens",
  version: "0.0.1",
  // 2. Trigger
  trigger: eventTrigger({
    name: "foo.bar",
  }),
  // 3. Run function
  run: async (payload, io, ctx) => {
    // do something
  },
});

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Jobs, Triggers, Runs and Tasks

A more complicated Job

When a GitHub issue is modified: If the issue has been labelled “critical” send a Slack message and sync the issue to Linear.

This can be visualized like this:

Events trigger Jobs. Jobs generate a Run for every event. A Run is a single execution of a Job. A Run can have multiple Tasks which are the individual steps of a Run.

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References