On Tue, Jan 5, 2010 at 8:56 AM, Jcon <javarad...@gmail.com> wrote: > 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?
With a Scala Actor, you can only exit from the current Actor, so you must
send some sort of ShutDown message to the Actor and the Actor would do its
cleanup and then call this.exit().
It's the same scenario with Lift, except you don't do the this.exit() call
> If LiftActor is still usable in that scenario, how can
> my LiftActor get a notification that it needs to do cleanup?
You send a "ShutDown" message.
> 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.
>
Personally, I run Ubuntu and sendmail on my dev box.
>
> 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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>
--
Lift, the simply functional web framework http://liftweb.net
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