Yes, I plan on sharing all of the knowledge that I learn from this in
either the wiki or a blog entry. What I'm trying to do is tail my log
files and send them to lift via AMQP. lift will then parse each log
line (which contain some statistical information) and plot them every
5 seconds.
lift has an AMQP listener which sends a message to my Stats actor.
The following is a snippet of code in that Stats object (with that
code snipped out to make this message shorter). This code assumes
that flot can maintain history, so I am trying to push 5 seconds worth
of Map data to the graph every 5 seconds. This is just sample code
and the map won't be empty in actuality, but it will be created with
default keys and values.
def notifyListeners(newStat: Map[String, (Int, Long)]) = {
listeners.foreach(_ ! UpdateStats(newStat))
}
def act = loop(new EmptyMap[String, (Int, Long)])
def loop(map: Map[String, (Int, Long)]) {
react {
// ... snip ...
case Push =>
notifyListeners(map)
ActorPing.schedule(this, Push, 5000L)
loop(new EmptyMap[String, (Int, Long)])
}
}
start
ActorPing.schedule(this, Push, 5000L)
On Sep 21, 9:58 am, "David Pollak" <[EMAIL PROTECTED]>
wrote:
> On Sat, Sep 20, 2008 at 5:16 PM, Bryan <[EMAIL PROTECTED]> wrote:
>
> > I am interested in adding some (almost) real-time charts to a project
> > of mine. I have a couple of questions, though.
>
> > 1) Is there documentation on lift's server and client implementation
> > of comet available online?
>
> None that I'm aware of, but I certainly hope you'll make wiki entries based
> on this exchange.
>
>
>
> > 2) Are there any reasons why dojo's comet client wasn't considered?
>
> Because Dojo is yet another JavaScript library and the goal is to have fewer
> absolute dependencies (Lift can currently be used with YUI and jQuery thanks
> to Marius' work.) Layering Dojo in would have been more complexity for very
> little gain.
>
>
>
> > 3) I see that there is a flot widget that will be integrated into lift
> > soon. What benefits do these widgets offer over a normal JavaScript
> > implementation?
> > 4) I have an immutable Map of data that I need to "push" to the JQuery
> > chart. Where should I begin? Do I send this in JSON format?
>
> Do you want to push the whole map or deltas of the map?
>
> I'll put together some examples when I better understand what you want to
> do.
>
> Thanks,
>
> David
>
>
>
> > A lot of questions, I know!
>
> > p.s. I am loving lift so far. Great work. The CometActor tutorial
> > was very useful as well.
>
> > Thanks,
> > Bryan
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Collaborative Task Managementhttp://much4.us
> Follow me:http://twitter.com/dpp
> Git some:http://github.com/dpp
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