lila/modules/relay/src/main/SyncLog.scala

package lila.relay

import org.joda.time.DateTime

case class SyncLog(events: Vector[SyncLog.Event]) extends AnyVal {

  def isOk = events.lastOption.exists(_.isOk)

  def alwaysFails = events.size == SyncLog.historySize && events.forall(_.isKo)

  def justTimedOut = events.lastOption.exists(_.isTimeout)

  def updatedAt = events.lastOption.map(_.at)

  def add(event: SyncLog.Event) = copy(
    events = events.take(SyncLog.historySize - 1) :+ event
  )
}

object SyncLog {

  val historySize = 5

  val empty = SyncLog(Vector.empty)

  case class Event(
      moves: Int,
      error: Option[String],
      at: DateTime
  ) {
    def isOk = error.isEmpty
    def isKo = error.nonEmpty
    def isTimeout = error has SyncResult.Timeout.getMessage
  }

  def event(moves: Int, e: Option[Exception]) = Event(
    moves = moves,
    error = e map {
      case _: java.util.concurrent.TimeoutException => "Request timeout"
      case e: Exception => e.getMessage take 100
    },
    at = DateTime.now
  )
}