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/*
* Copyright 2018-2024 OVO Energy Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
package fs2.kafka
import scala.concurrent.duration.FiniteDuration
import cats.Show
import org.apache.kafka.clients.producer.ProducerConfig
/**
* [[TransactionalProducerSettings]] contain settings necessary to create a
* [[TransactionalKafkaProducer]]. This includes a transactional ID and any other
* [[ProducerSettings]].
*
* [[TransactionalProducerSettings]] instances are immutable and modification functions return a
* new [[TransactionalProducerSettings]] instance.
*
* Use [[TransactionalProducerSettings.apply]] to create a new instance.
*/
sealed abstract class TransactionalProducerSettings[F[_], K, V] {
/**
* The transactional ID which should be used in transactions. This is the value for the following
* producer property.
*
* {{{
* ProducerConfig.TRANSACTIONAL_ID_CONFIG
* }}}
*/
def transactionalId: String
/**
* The producer settings including transactional properties, as configured by the
* [[TransactionalProducerSettings]].
*/
def producerSettings: ProducerSettings[F, K, V]
/**
* Returns a new [[TransactionalProducerSettings]] instance with the specified transaction
* timeout. This is setting the following producer property, except you can specify it with a
* `FiniteDuration` instead of a `String`.
*
* {{{
* ProducerConfig.TRANSACTION_TIMEOUT_CONFIG
* }}}
*/
def withTransactionTimeout(
transactionTimeout: FiniteDuration
): TransactionalProducerSettings[F, K, V]
}
object TransactionalProducerSettings {
final private[this] case class TransactionalProducerSettingsImpl[F[_], K, V](
override val transactionalId: String,
override val producerSettings: ProducerSettings[F, K, V]
) extends TransactionalProducerSettings[F, K, V] {
override def withTransactionTimeout(
transactionTimeout: FiniteDuration
): TransactionalProducerSettings[F, K, V] =
copy(
producerSettings = producerSettings.withProperty(
ProducerConfig.TRANSACTION_TIMEOUT_CONFIG,
transactionTimeout.toMillis.toString
)
)
override def toString: String =
s"TransactionalProducerSettings(transactionalId = $transactionalId, producerSettings = $producerSettings)"
}
def apply[F[_], K, V](
transactionalId: String,
producerSettings: ProducerSettings[F, K, V]
): TransactionalProducerSettings[F, K, V] =
TransactionalProducerSettingsImpl(
transactionalId = transactionalId,
producerSettings = producerSettings
.withProperty(ProducerConfig.TRANSACTIONAL_ID_CONFIG, transactionalId)
)
implicit def transactionalProducerSettingsShow[F[_], K, V]
: Show[TransactionalProducerSettings[F, K, V]] =
Show.fromToString
}
