rhttpc.client.proxy.FailureResponseHandleStrategyChooser.scala Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package rhttpc.client.proxy
import scala.concurrent.duration._
trait FailureResponseHandleStrategyChooser {
def choose(attemptsSoFar: Int, lastPlannedDelay: Option[FiniteDuration]): ResponseHandleStrategy
}
sealed trait ResponseHandleStrategy
case class Retry(delay: FiniteDuration) extends ResponseHandleStrategy
case object SendToDLQ extends ResponseHandleStrategy
case object Handle extends ResponseHandleStrategy
case object Skip extends ResponseHandleStrategy
object HandleAll extends FailureResponseHandleStrategyChooser {
override def choose(attempt: Int, lastPlannedDelay: Option[FiniteDuration]): ResponseHandleStrategy = Handle
}
object SkipAll extends FailureResponseHandleStrategyChooser {
override def choose(attempt: Int, lastPlannedDelay: Option[FiniteDuration]): ResponseHandleStrategy = Skip
}
case class BackoffRetry(initialDelay: FiniteDuration, multiplier: BigDecimal, maxRetries: Int) extends FailureResponseHandleStrategyChooser {
override def choose(attemptsSoFar: Int, lastPlannedDelay: Option[FiniteDuration]): ResponseHandleStrategy = {
val retriesSoFar = attemptsSoFar - 1
if (retriesSoFar + 1 > maxRetries) {
SendToDLQ
} else if (attemptsSoFar == 1) {
Retry(initialDelay)
} else {
val nextDelay = lastPlannedDelay match {
case Some(lastDelay) =>
(lastDelay.toMillis * multiplier).toLong.millis
case None =>
initialDelay.toMillis.millis
}
Retry(nextDelay)
}
}
}