HI We are using kotlin with ktor server side Is there a simp kotlinlang #server

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alon shoshani.86

12/23/2021, 8:57 AM

HI, We are using kotlin with ktor server side. Is there a simple way to schedule a task? In spring I just use @scheduler annotation. any examples?

simon.vergauwen

12/23/2021, 8:58 AM

You could use Arrow Fx Schedule, and Coroutines.

fun Application.task(): Job = launch {
   Schedule.spaced<Unit>(1.minutes).repeat {
     // Run task
   }
}

It has a wide set of operators for building complex Schedules. https://arrow-kt.io/docs/apidocs/arrow-fx-coroutines/arrow.fx.coroutines/-schedule/

alon shoshani.86

12/23/2021, 9:35 AM

I'll check. thx

Do I have to wrap it in run blocking?

runBlocking {
            Schedule.spaced<Unit>(5.minutes).repeat {
                <http://log.info|log.info> { "here" }
            }
        }

Is it good practice?

simon.vergauwen

12/23/2021, 10:52 AM

You should use

Application

from

Ktor

which is a

CoroutineScope

, and then you can

launch

the

Job

with the same lifecycle as your Ktor server.

👍 1

fun Application.task(): Job = launch {
   Schedule.spaced<Unit>(1.minutes).repeat {
     // Run task
   }
}

Application

here is

Ktor

Application

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