That's because cleanUpFunc is gone.
You must do:
object sessDirHash extends SessionVar[String]("") {
registerCleanupFunc(session => println("Got hash: " + this.is))
}
On Wed, Feb 4, 2009 at 12:43 PM, Alli <allilis...@gmail.com> wrote:
>
> Hey David,
>
> Two questions this time:
>
> I've been playing with your commit earlier today and cleaning up
> SessionVar's.
> I got:
>
> object sessDirHash extends SessionVar[String]("") {
> def cleanUpFunc(sess: LiftSession) = {
> println("Got hash: " + this.is)
> }
>
> In my test snippet I got:
> sessDirHash("this is a test")
> println("Got var: " + ResizeMyPics.sessDirHash.is)
>
> I can see it printed out correctly after setting it but it's empty in
> the cleanup function.
>
> 2)
> Second question, I submit a form and my flash component starts e.g. 3
> new sessions and POST's to /resize
>
> /resize sets a SessionVar variable but it's like it's only being set
> the first time. I'm printing out right before I register
> the clean up handler in the SessionVar, from my jetty logs:
>
> INFO - Service request (GET) /images/cancelbutton.gif took 9
> Milliseconds
> Rez Gots: 127.0.0.1
> Registering cleanup for: 1uvl5176sdy9r
> Rez Rep Gots: 127.0.0.1
> INFO - Service request (POST) /resize took 270 Milliseconds
> Rez Gots: 127.0.0.1
> Rez Rep Gots: 127.0.0.1
> INFO - Service request (POST) /resize took 91 Milliseconds
> Rez Gots: 127.0.0.1
> Rez Rep Gots: 127.0.0.1
> INFO - Service request (POST) /resize took 481 Milliseconds
>
> I would think it should print out Registering cleanup handler ...
> after each /resize request since they are different sessions.
>
> Then the sessions all timeout and I can see there are 4 sessions
> expiring but there is only message printed out once
> from the clean up handler.
>
> What are your thoughts on this?
>
> Cheers,
> Alfred
>
> On Feb 4, 1:19 am, Alli <allilis...@gmail.com> wrote:
> > Thanks David, I'll get it tomorrow from scala-tools.org and finish up
> > the app.
> > URL will behttp://www.resizemypics.neta free service for people to
> > resize their pictures
> > and view them online. Just a simple, yet convenient service. Gives me
> > a chance to learn
> > more about lift as well. Been following lift for a while but this is
> > the first site I finish, have a
> > half finished blog site in lift. Doing all this stuff outside of work
> > so it's easy to get distracted.
> >
> > Will let you know once the site is in production.
> >
> > Again thanks for your help.
> >
> > Cheers,
> > Alli
> >
> > On Feb 4, 1:12 am, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> >
> > > 0.11-SNAPSHOT is 0.10 with bug fixes. It's very stable and will be 1.0
> on
> > > 2/26.
> > > I'll commit up a fix to this problem in a few minutes.
> >
> > > Also, what's the URL of the site? :-)
> >
> > > On Tue, Feb 3, 2009 at 4:58 PM, Alli <allilis...@gmail.com> wrote:
> >
> > > > 0.10 at the moment, reckon i should upgrade to 0.11? This site is
> > > > going live soon though and I was not sure
> > > > about the status of 0.11-snapshot.
> >
> > > > On Feb 4, 12:56 am, David Pollak <feeder.of.the.be...@gmail.com>
> > > > wrote:
> > > > > Crud. It looks like the session cleanup is done outside of the
> session
> > > > > scope.
> > > > > Are you using 0.11-SNAPSHOT?
> >
> > > > > On Tue, Feb 3, 2009 at 4:35 PM, Alli <allilis...@gmail.com> wrote:
> >
> > > > > > Been testing this stuff and my object is like this:
> >
> > > > > > object ReportAddress extends SessionVar[String]("") {
> > > > > > def cleanUp() = {
> > > > > > println(S.session)
> > > > > > S.session.map { sess =>
> > > > > > println("Session ID: " + sess.uniqueId)
> > > > > > println("REM ADDRESS: " + this.is)
> > > > > > val tempDir = ...
> > > > > > // Remove the temporary dir for this session.
> > > > > > tempDir.destroy()
> > > > > > }
> > > > > > }
> >
> > > > > > registerCleanupFunc(cleanUp _)
> > > > > > }
> >
> > > > > > println(S.session) always gives me "Empty"
> >
> > > > > > Any idea what could cause this?
> >
> > > > > > On Feb 3, 10:38 pm, David Pollak <feeder.of.the.be...@gmail.com>
> > > > > > wrote:
> > > > > > > On Tue, Feb 3, 2009 at 2:13 PM, Alli <allilis...@gmail.com>
> wrote:
> >
> > > > > > > > Makes a lot of sense, thanks David.
> >
> > > > > > > > Always amazes me how good and clean the design of lift is.
> >
> > > > > > > Flattery will get you a lot... :-)
> >
> > > > > > > > On Feb 3, 9:49 pm, David Pollak <
> feeder.of.the.be...@gmail.com>
> > > > wrote:
> > > > > > > > > On Tue, Feb 3, 2009 at 1:06 PM, Alli <allilis...@gmail.com
> >
> > > > wrote:
> >
> > > > > > > > > > Evening,
> >
> > > > > > > > > > During the lifetime of a session, the session may have
> uploaded
> > > > > > bunch
> > > > > > > > > > of files and these need to be able to be
> destroyed/unlinked
> > > > when a
> > > > > > > > > > session ends.
> >
> > > > > > > > > > When user uploads a file it's parent dir is determined by
> the
> > > > > > session
> > > > > > > > > > unique ID and the remote address of the uploader. The
> name is
> > > > e.g.
> > > > > > /
> > > > > > > > > > tmp/sha1 hash of session id and remote address'. This
> means in
> > > > > > order
> > > > > > > > > > to determine what to destroy I need to know what remote
> address
> > > > the
> > > > > > > > > > session belongs to. I am setting that when uploading a
> file has
> > > > > > been
> > > > > > > > > > uploaded successfully.
> >
> > > > > > > > > > In Boot.scala I want to do something like:
> > > > > > > > > > // Set session handler.
> > > > > > > > > > LiftSession.onAboutToShutdownSession =
> List[LiftSession =>
> > > > > > Unit](
> > > > > > > > > > session => {
> > > > > > > > > > var sessId = session.uniqueId
> > > > > > > > > > val remoteIp = session.get("remoteAddress")
> > > > > > > > > > val myTempDir = new TempDirWeb(sessId, remoteIp)
> > > > > > > > > > myTempDir.unlinkall()
> > > > > > > > > > })
> >
> > > > > > > > > > Problem with this is that the LiftSession.get[T]() method
> is
> > > > > > package
> > > > > > > > > > private (liftweb). I can think of some other scenarios
> where
> > > > one
> > > > > > would
> > > > > > > > > > need access to the session variables before destroying
> the
> > > > session.
> >
> > > > > > > > > > Does this make sense or is my design just plain wrong?
> :).
> >
> > > > > > > > > get is typesafe, so exposing it would make it not type
> safe.
> > > > It's
> > > > > > always
> > > > > > > > > accessed via SessionVars.
> >
> > > > > > > > > You can do something like:
> >
> > > > > > > > > object ReportAddress extends SessionVar[String]("") {
> > > > > > > > > def cleanUp() {
> > > > > > > > > S.session.map{ sess =>
> > > > > > > > > val td = new TempDirWeb(sess.uniqueId, this.is)
> > > > > > > > > td.unlinkall()
> > > > > > > > > }
> > > > > > > > > }
> >
> > > > > > > > > registerCleanupFunc(cleanUp _)
> >
> > > > > > > > > }
> >
> > > > > > > > > Each SessionVar (and RequestVar) has a cleanup func that
> will be
> > > > > > called
> > > > > > > > as
> > > > > > > > > the Var is going away.
> >
> > > > > > > > > > Cheers,
> > > > > > > > > > Alfred
> >
> > > > > > > > > --
> > > > > > > > > Lift, the simply functional web frameworkhttp://
> liftweb.net
> > > > > > > > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > > > > > > > Follow me:http://twitter.com/dpp
> > > > > > > > > Git some:http://github.com/dpp
> >
> > > > > > > --
> > > > > > > Lift, the simply functional web frameworkhttp://liftweb.net
> > > > > > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > > > > > Follow me:http://twitter.com/dpp
> > > > > > > Git some:http://github.com/dpp
> >
> > > > > --
> > > > > Lift, the simply functional web frameworkhttp://liftweb.net
> > > > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > > > Follow me:http://twitter.com/dpp
> > > > > Git some:http://github.com/dpp
> >
> > > --
> > > Lift, the simply functional web frameworkhttp://liftweb.net
> > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > Follow me:http://twitter.com/dpp
> > > Git some:http://github.com/dpp
> >
>
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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