I'm new to scala and lift, and I've been hacking with a LiftActor used
to a local mail server for development based on the post by Ryan
Donahue:
http://groups.google.com/group/liftweb/browse_thread/thread/56002b39aa67aee6/4d3946d145560d3e?lnk=gst&q=test+mail#4d3946d145560d3e
However the code in that post uses ActorPing.scheduledAtFixedRate
which has been removed in the lift 1.1-M8 which I'm using, and it also
looks like LiftActors are now the preferred actor library to use.
Question 1: Given that my LiftActor has to do some cleanup at
shutdown, is a LiftActor even appropriate or should I look at regular
scala actors? If LiftActor is still usable in that scenario, how can
my LiftActor get a notification that it needs to do cleanup? The
particular problem I'm having is that Jetty restarts when I change
code, but the smtp server is still bound to the mail port so the
restart fails. I need to stop the mail server when Jetty restarts.
Question 2: Is there an easier way to configure mail locally for
development? I know I could create a gmail account and put the
credentials in Boot.scala, but I was hoping for something self-
contained on my local machine.
Here's my code if that helps (probably not since I'm new to scala it
is probably pretty bad):
package com.chariotsolutions.liftexpo
import scala.collection.jcl.MutableIterator.Wrapper
import net.liftweb.util._
import net.liftweb.util.Helpers._
import net.liftweb.actor._
import net.liftweb.common._
import com.dumbster.smtp._
object DumbMail extends LiftActor {
private var server : Box[SimpleSmtpServer] = Empty
private var port : Int = 25
implicit def javaIteratorToScalaIterator[A](it : java.util.Iterator
[A]) = new Wrapper(it)
def boot(port:Int) = {
println("DumbMail booting")
this.port = port
restartServer
ActorPing.schedule(this, DumbMailEvent, 5 seconds)
}
private def restartServer {
stopServer
server = Full(SimpleSmtpServer.start(port))
}
private def stopServer {
server.map(_.stop)
server = Empty
}
protected def messageHandler = {
case DumbMailEvent => {
println("DumbMailEvent received")
server match {
case Full(s) => {
if (s.getReceivedEmailSize > 0) {
//val msgs = new Wrapper(s.getReceivedEmail)
//val msgs = new IteratorWrapper
(s.getReceivedEmail.asInstanceOf [java.util.Iterator[SmtpMessage]])
for (anyMsg <- s.getReceivedEmail) {
val msg = anyMsg.asInstanceOf[SmtpMessage]
println("RECEIVED EMAIL
---------------------------------------")
println("From: " + msg.getHeaderValue("From"))
println("To: " + msg.getHeaderValue("To"))
println("Subject: " + msg.getHeaderValue
("Subject"))
println("Body: " + msg.getBody)
println
("------------------------------------------------------")
}
restartServer // reset state
}
}
case _ => // do nothing
}
}
ActorPing.schedule(this, DumbMailEvent, 5 seconds)
case _ => println("Unexpected event received")
}
}
case object DumbMailEvent
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