mmollaverdi

def getSystemStatusInfo(id: String): Task[SystemStatusInfo] = {
  map2(fetchSystemTask(id), fetchSystemStatusTask(id))((system, systemStatus) => SystemStatusInfo(system, systemStatus))
}

mmollaverdi

def map2[A, B, C](task1: Task[A], task2: Task[B])(combine: (A, B) => C): Task[C] = {
  Task.mapBoth(task1, task2)(combine)
}

mmollaverdi

def getSystemStatusInfo(id: String): Future[SystemStatusInfo] = {
  map2(fetchSystem(id), fetchSystemStatus(id))((system, systemStatus) => SystemStatusInfo(system, systemStatus))
}

mmollaverdi

def map2[A, B, C](future1: Future[A], future2: Future[B])(combine: (A, B) => C): Future[C] = {
  future1.zip(future2).map {
    case (result1, result2) => combine(result1, result2)
  }
}

mmollaverdi

def getSystemStatusInfo(id: String): Future[SystemStatusInfo] = {
  val systemFuture = fetchSystem(id)
  val systemStatusFuture = fetchSystemStatus(id)
  systemFuture.zip(systemStatusFuture).map {
    case (system, systemStatus) => SystemStatusInfo(system, systemStatus)
  }
}

mmollaverdi

import scala.concurrent.ExecutionContext.Implicits.global

def getSystemStatusInfo(id: String): Future[SystemStatusInfo] = {
  for {
    system <- fetchSystem(id)
    systemStatus <- fetchSystemStatus(id)
  } yield SystemStatusInfo(system, systemStatus)
}

mmollaverdi

def getSystemStatusInfo(id: String): Option[SystemStatusInfo] = {
  for {
    systemStatus <- systemStatusMap.get(id)
    system <- systemsMap.get(id)
  } yield SystemStatusInfo(system, systemStatus)
}

mmollaverdi

def getSystemStatusInfo(id: String): Option[SystemStatusInfo] = {
  for {
    system <- systemsMap.get(id)
    systemStatus <- systemStatusMap.get(id)
  } yield SystemStatusInfo(system, systemStatus)
}

mmollaverdi

scala> getSystemStatusInfo("consumer_desktop")
res20: Option[SystemStatusInfo] = Some(SystemStatusInfo(System(consumer_desktop,realestate.com.au desktop site,consumer_web),Red))

scala> getSystemStatusInfo("no_such_system_id")
res21: Option[SystemStatusInfo] = None

mmollaverdi

def getSystemStatusInfo(id: String): Option[SystemStatusInfo] = {
  val systemOption = systemsMap.get(id)
  systemOption.flatMap(system => {
    val systemStatusOption = systemStatusMap.get(id)
    systemStatusOption.map(systemStatus => SystemStatusInfo(system, systemStatus))
  })
}