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• twitter-server_2.10
• 1.20.0
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• FlagAnnouncer.scala

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com.twitter.server.resolver.FlagAnnouncer.scala Maven / Gradle / Ivy

package com.twitter.server

import com.twitter.app.GlobalFlag
import com.twitter.finagle.{Announcer, Announcement, AnnouncerNotFoundException}
import com.twitter.util.Future
import java.net.InetSocketAddress

object announcerMap extends GlobalFlag[Map[String, String]](Map.empty,
  "A list mapping service names to announcers (gizmoduck=zk!/gizmoduck)")

class FlagAnnouncer extends Announcer {
  val scheme = "flag"

  private[this] def announcers = announcerMap()

  def announce(addr: InetSocketAddress, name: String): Future[Announcement] = {
    announcers.get(name) match {
      case Some(target) => Announcer.announce(addr, target)
      case None => Future.exception(new AnnouncerNotFoundException(name))
    }
  }
}