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• kafka-journal_2.13
• 20210830.1
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• FromAttempt.scala

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com.evolutiongaming.kafka.journal.FromAttempt.scala Maven / Gradle / Ivy

package com.evolutiongaming.kafka.journal

import cats.Applicative
import cats.effect.IO
import cats.syntax.all._
import com.evolutiongaming.kafka.journal.util.Fail
import com.evolutiongaming.kafka.journal.util.Fail.implicits._
import scodec.Attempt

import scala.util.Try

trait FromAttempt[F[_]] {

  def apply[A](fa: Attempt[A]): F[A]
}

object FromAttempt {

  def apply[F[_]](implicit F: FromAttempt[F]): FromAttempt[F] = F


  def lift[F[_] : Applicative : Fail]: FromAttempt[F] = new FromAttempt[F] {

    def apply[A](fa: Attempt[A]) = {
      fa.fold(
        a => s"scodec error ${ a.messageWithContext }".fail[F, A],
        a => a.pure[F])
    }
  }


  implicit val tryFromAttempt: FromAttempt[Try] = lift[Try]

  implicit val ioFromAttempt: FromAttempt[IO] = lift[IO]
}