https://github.com/pariola/sched

a simple scheduler (wip)
https://github.com/pariola/sched

priority-queue priority-scheduling scheduler

Last synced: 12 days ago
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a simple scheduler (wip)

• Host: GitHub
• URL: https://github.com/pariola/sched
• Owner: pariola
• Created: 2021-12-11T21:06:27.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2023-02-27T00:11:39.000Z (almost 3 years ago)
• Last Synced: 2024-06-21T16:55:27.445Z (over 1 year ago)
• Topics: priority-queue, priority-scheduling, scheduler
• Language: Go
• Homepage:
• Size: 16.6 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# sched

an attempt at creating a simple scheduler.

It relies on a priority queue (ex. Binary Heap) to maintain all the jobs needed to be scheduled.

### Features

- [ ] state persistence

- [x] cancel pending job

### In Action

```go

func main() {

	s := sched.New(sched.Config{

		N: 10,

		Q: queue.BinaryHeap(),

		Sink: func(id int, job sched.Job) {

			fmt.Printf("by worker: %d | message: %s\n", id, job.Msg)

		},

	})

	now := time.Now()

	// queue messages

	for i := 0; i < 5; i++ {

		msg := fmt.Sprintf("msg %d", i)

		s.Queue([]byte(msg), now.Add(3*time.Second))

	}

	jobOneId := s.Queue([]byte("missing!"), now.Add(2*time.Second))

	s.Queue([]byte("You rock!"), now.Add(2*time.Second))

	// cancel job

	s.CancelJob(jobOneId)

}

```

Result:

```txt

by worker: 9 | message: You rock!

by worker: 4 | message: msg 3

by worker: 5 | message: msg 0

by worker: 6 | message: msg 1

by worker: 7 | message: msg 2

by worker: 8 | message: msg 4

```