eventstore.cluster.ResolveDns.scala Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of eventstore-client_2.11 Show documentation

Event Store JVM Client

The newest version!

package eventstore.cluster

import java.net.InetAddress
import scala.concurrent.duration.FiniteDuration
import scala.concurrent.{ Await, ExecutionContext, Future }
import scala.util.control.NonFatal

object ResolveDns {
  def apply(dns: String, atMost: FiniteDuration)(implicit ec: ExecutionContext): List[InetAddress] = {
    def resolve = InetAddress.getAllByName(dns).toList
    val result = try Await.result(Future(resolve), atMost) catch {
      case NonFatal(e) => throw new ClusterException(s"Error while resolving DNS entry $dns", Some(e))
    }

    if (result.isEmpty) throw new ClusterException(s"DNS entry '$dns' resolved into empty list")
    else result
  }
}