blended.itestsupport.docker.WatchExecActor.scala Maven / Gradle / Ivy

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Define an integration test API for collaborating blended container(s) using docker as a runtime for the container(s) under test and an Akka based Camel framework to perform the integration tests as pure blackbox tests. Container(s) may be prestarted and discovered (for execution speed) or started by the integration test (for reproducability).

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package blended.itestsupport.docker

import java.io.ByteArrayOutputStream

import akka.actor.{Actor, ActorLogging, ActorRef, Props}
import blended.itestsupport.docker.protocol.ExecResult

import scala.concurrent.duration._

case object WatchExec

object WatchExecActor {

  def props(container: DockerContainer, execId: String, out: ByteArrayOutputStream, err: ByteArrayOutputStream) =
    Props(new WatchExecActor(container, execId, out, err))
}

class WatchExecActor(
  container: DockerContainer, execId: String, out: ByteArrayOutputStream, err: ByteArrayOutputStream
) extends Actor with ActorLogging {

  private[this] implicit val eCtxt = context.system.dispatcher

  case object Tick

  override def receive: Receive = {
    case WatchExec =>
      log.info(s"Monitoring exec instance [$execId]")
      context.become(watching(sender()))
      self ! Tick
  }

  def watching(requestor: ActorRef): Receive = {
    case Tick =>
      val inspect = container.inspectExec(execId)
      if (inspect.isRunning()) {
        log.debug(s"Exec instance [$execId] is still running ...")
        context.system.scheduler.scheduleOnce(100.millis, self, Tick)
      } else {
        log.info(s"Exec instance [$execId] has terminated. RC is [${inspect.getExitCode()}]")
        val result = ExecResult(execId, out.toByteArray(), err.toByteArray(), inspect.getExitCode())

        requestor ! result

        context.stop(self)
      }
  }
}