jms4s.JmsAcknowledgerConsumer.scala Maven / Gradle / Ivy
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/*
* Copyright (c) 2020 Functional Programming in Bologna
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
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* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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*/
package jms4s
import cats.data.NonEmptyList
import cats.effect.{ Async, Sync }
import cats.syntax.all._
import jms4s.JmsAcknowledgerConsumer.AckAction
import jms4s.config.DestinationName
import jms4s.jms._
import scala.concurrent.duration.FiniteDuration
trait JmsAcknowledgerConsumer[F[_]] {
def handle(f: (JmsMessage, MessageFactory[F]) => F[AckAction[F]]): F[Unit]
}
object JmsAcknowledgerConsumer {
private[jms4s] def make[F[_]: Async](rawConsumer: PooledConsumer[F]): JmsAcknowledgerConsumer[F] =
(action: (JmsMessage, MessageFactory[F]) => F[AckAction[F]]) =>
{
rawConsumer.consume {
case (message, context, mf) =>
for {
res <- action(message, mf)
_ <- res.fold(
ifAck = Sync[F].blocking(message.wrapped.acknowledge()),
ifNoAck = Sync[F].unit,
ifSend = send =>
send.messages.messagesAndDestinations.traverse_ {
case (message, (name, Some(delay))) => context.send(name, message, delay)
case (message, (name, None)) => context.send(name, message)
} *> Sync[F].blocking(message.wrapped.acknowledge())
)
} yield ()
}
}.compile.drain
sealed abstract class AckAction[F[_]] extends Product with Serializable {
def fold(ifAck: => F[Unit], ifNoAck: => F[Unit], ifSend: AckAction.Send[F] => F[Unit]): F[Unit]
}
object AckAction {
private[jms4s] case class Ack[F[_]]() extends AckAction[F] {
override def fold(
ifAck: => F[Unit],
ifNoAck: => F[Unit],
ifSend: AckAction.Send[F] => F[Unit]
): F[Unit] = ifAck
}
// if the client wants to ack groups of messages, it'll pass a sequence of NoAck and then a cumulative Ack
private[jms4s] case class NoAck[F[_]]() extends AckAction[F] {
override def fold(
ifAck: => F[Unit],
ifNoAck: => F[Unit],
ifSend: AckAction.Send[F] => F[Unit]
): F[Unit] = ifNoAck
}
case class Send[F[_]](messages: ToSend[F]) extends AckAction[F] {
override def fold(
ifAck: => F[Unit],
ifNoAck: => F[Unit],
ifSend: AckAction.Send[F] => F[Unit]
): F[Unit] =
ifSend(this)
}
private[jms4s] case class ToSend[F[_]](
messagesAndDestinations: NonEmptyList[(JmsMessage, (DestinationName, Option[FiniteDuration]))]
)
def ack[F[_]]: AckAction[F] = Ack()
def noAck[F[_]]: AckAction[F] = NoAck()
def sendN[F[_]](
messages: NonEmptyList[(JmsMessage, DestinationName)]
): AckAction[F] =
Send[F](ToSend[F](messages.map { case (message, name) => (message, (name, None)) }))
def sendNWithDelay[F[_]](
messages: NonEmptyList[(JmsMessage, (DestinationName, Option[FiniteDuration]))]
): AckAction[F] = Send[F](ToSend(messages))
def sendWithDelay[F[_]](
message: JmsMessage,
destination: DestinationName,
duration: Option[FiniteDuration]
): AckAction[F] =
Send[F](ToSend[F](NonEmptyList.one((message, (destination, duration)))))
def send[F[_]](
message: JmsMessage,
destination: DestinationName
): AckAction[F] =
Send[F](ToSend[F](NonEmptyList.one((message, (destination, None)))))
}
}