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package ch.jodersky.flow
package samples.terminal
import akka.actor.{ Actor, ActorLogging, ActorRef, Props, Terminated, actorRef2Scala }
import akka.io.IO
import akka.util.ByteString
class Terminal(port: String, settings: SerialSettings) extends Actor with ActorLogging {
import Terminal._
import context._
val reader = actorOf(Props[ConsoleReader])
log.info(s"Requesting manager to open port: ${port}, baud: ${settings.baud}")
IO(Serial) ! Serial.Open(port, settings)
override def postStop() = {
system.terminate()
}
def receive = {
case Serial.CommandFailed(cmd, reason) => {
log.error(s"Connection failed, stopping terminal. Reason: ${reason}")
context stop self
}
case Serial.Opened(port) => {
log.info(s"Port ${port} is now open.")
val operator = sender
context become opened(operator)
context watch operator
reader ! ConsoleReader.Read
}
}
def opened(operator: ActorRef): Receive = {
case Serial.Received(data) => {
log.info(s"Received data: ${formatData(data)}")
}
case Terminal.Wrote(data) => log.info(s"Wrote data: ${formatData(data)}")
case Serial.Closed => {
log.info("Operator closed normally, exiting terminal.")
context unwatch operator
context stop self
}
case Terminated(`operator`) => {
log.error("Operator crashed, exiting terminal.")
context stop self
}
case ConsoleReader.EOT => {
log.info("Initiating close.")
operator ! Serial.Close
}
case ConsoleReader.ConsoleInput(input) => {
val data = ByteString(input.getBytes)
operator ! Serial.Write(data, length => Wrote(data.take(length)))
reader ! ConsoleReader.Read
}
}
}
object Terminal {
case class Wrote(data: ByteString) extends Serial.Event
def apply(port: String, settings: SerialSettings) = Props(classOf[Terminal], port, settings)
private def formatData(data: ByteString) = data.mkString("[", ",", "]") + " " + (new String(data.toArray, "UTF-8"))
}
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