Juanjo Conti wrote:
2009/6/26 Juanjo Conti <[email protected]>:
Hi, I wonder know if my nevow.athena.LiveElement intances are alive.
This means for example, the web browser was now closed.
I've been checking the API documentation at
http://buildbot.divmod.org/apidocs/nevow.athena.LiveElement.html but
didn't fin any sutable method for asking this.
I thought I could use the LiveElement detached method
http://buildbot.divmod.org/apidocs/nevow.athena._LiveMixin.html#detached
but it semms not to be called when I close the browser where a
LIveElement is living...
Hello,
2 months back I've had same question - working solution from Werner
is in attached message.
Regards, Paul
--- Begin Message ---
Paul Reznicek wrote:
[email protected] wrote:
On 21 Apr, 08:57 pm, [email protected] wrote:
Hello All,
LiveElement is fantastic, but I'm too stupid to find out,
how to put temporary page under sessiop URL...
This work for js modules at start like:
http://localhost:8080/user/<HASH clientID>/jsmodule/athena_test
I'd like to add temporary during run time something like:
http://localhost:8080/user/<HASH clientID>/your_data
page or staticFile, which should exists only few minutes.
Caveat is, that instances of gone clients are keeping in memory. Is there
a way to find out, that a client is gone (closed browser or switched to
other site)?
Welcome to the land of garbage collecting languages... What was the
losing memory of the C++ ages is now the not releasing memory because of
noncollectable garbage and server processes eating all the memory the
machine has. I had to learn it the hard way but NEVER ever store a
reference to something like sessions, mind or the the hierarchy of your
LiveElements unless you're prepared to handle the breakup of the
reference at cleanup time. Also keep in mind that the object hierarchy
of client and server must be in sync or you're risking that the detach
functionality does not work as advertised. Please see the
detach/detached functionality in athena.py
class thePage(athena.LivePage):
def beforeRender(self, ctx):
:
d = self.notifyOnDisconnect()
d.addErrback(self.disconn)
def disconn(self, reason):
"""
we will be called back when the client disconnects, just iterate
over all children and call a disconnected func if available
"""
for child in self.liveFragmentChildren:
if hasattr(child, 'disconnected'):
child.disconnected(reason);
Werner
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