com.evolutiongaming.kafka.journal.execution.ThreadFactoryOf.scala Maven / Gradle / Ivy

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package com.evolutiongaming.kafka.journal.execution

import java.util.concurrent.{ThreadFactory, Executors => ExecutorsJ}

import cats.effect.Sync
import cats.syntax.all._

object ThreadFactoryOf {

  def apply[F[_] : Sync](
    prefix: String,
    uncaughtExceptionHandler: Thread.UncaughtExceptionHandler = UncaughtExceptionHandler.default
  ): F[ThreadFactory] = {

    for {
      factory <- Sync[F].delay { ExecutorsJ.defaultThreadFactory() }
    } yield {
      new ThreadFactory {
        def newThread(runnable: Runnable) = {
          val thread = factory.newThread(runnable)
          val threadId = thread.getId
          thread.setName(s"$prefix-$threadId")
          thread.setUncaughtExceptionHandler(uncaughtExceptionHandler)
          thread
        }
      }
    }
  }
}