fs2.kafka.internal.WithConsumer.scala Maven / Gradle / Ivy
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/*
* Copyright 2018-2024 OVO Energy Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
package fs2.kafka.internal
import cats.effect.{Async, Resource}
import cats.syntax.all.*
import fs2.kafka.{ConsumerSettings, KafkaByteConsumer}
import fs2.kafka.consumer.MkConsumer
import fs2.kafka.internal.syntax.*
sealed abstract private[kafka] class WithConsumer[F[_]] {
def blocking[A](f: KafkaByteConsumer => A): F[A]
}
private[kafka] object WithConsumer {
def apply[F[_]: Async, K, V](
mk: MkConsumer[F],
settings: ConsumerSettings[F, K, V]
): Resource[F, WithConsumer[F]] = {
val blocking: Resource[F, Blocking[F]] = settings.customBlockingContext match {
case None => Blocking.singleThreaded[F]("fs2-kafka-consumer")
case Some(ec) => Resource.pure(Blocking.fromExecutionContext(ec))
}
blocking.flatMap { b =>
Resource.make {
mk(settings).map { consumer =>
new WithConsumer[F] {
override def blocking[A](f: KafkaByteConsumer => A): F[A] =
b(f(consumer))
}
}
}(_.blocking(_.close(settings.closeTimeout.toJava)))
}
}
}