Hi George Yes I know this is a wide-range topic. I have just started developing with Nevow and I don't have any major problem yet. I'm on planing stage so I just wanted to know what options I have. First maybe I would like to know how to compress response, including javascript files from Nevow/Athena framework. After every request to LivePage there are 3-4 additional requests for Nevow js and I want add my js files too. I was thinking about using dojotoolkit.org, so I can end up with many js static files. Peter On Mon, Feb 9, 2009 at 2:16 PM, George Pauly <george@ringdevelopment.com>wrote:

This is a wide-ranging topic, with possibilities on many levels.

As far as twisted-web itself, my experience is that it can be very rapid in response.

Your solution may lie elsewhere, but can you be more specific as to your situation?

Thanks,

George

On Mon, 2009-02-09 at 13:49 -0800, Piotr Jackowski wrote:

...

Hi Guys,

Do you have any hints how to speed up live page loading time? How to add compression or caching to xhtml and javascript files?

Peter _______________________________________________ Twisted-web mailing list Twisted-web@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web

-- George Pauly Ring Development www.ringdevelopment.com

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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. How can I add a child to the livepage session path? Best regards, Paul

glyph@divmod.com wrote:

On 21 Apr, 08:57 pm, maillists@ivsn.com 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.

How can I add a child to the livepage session path?

The magical hash URL you're referring to is just an alias for your page instance. So all you need to do is, in your LiveElement:

self.page.putChild("your_data", YourDataResource())

That YourDataResource() object (and its attendant URL) will then live as long as your LivePage connection does.

This is an interesting use-case, and it should work fine - but be aware that you're relying on a pretty weird little corner of implementation details here. It certainly never occurred to *me* that somebody would want to do this :).

Particularly, there's no public API for generating this URL; you'll have to rely on the fact that url.here.child(self.clientID) keeps working.

Thank you for that fast answer, I've tried before and now again, but this work only when one instance is running. If you try on i.e. chatterbox, after 2nd user join it is no more reliable, few times it works, but mostly not. I solved the problem by overriding locateChild in the top site instance of WidgetPluginRoot by checking segments[0] against all instances of elementFactory comparing their clientID and on match passing the request to own method added to LiveElement derived class. It is complicated, but seems to work... If there is an easier solution, I'll be happy. 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)? Thanks & regards, Paul

Werner Thie wrote:

Paul Reznicek wrote:

...

glyph@divmod.com wrote:

...

On 21 Apr, 08:57 pm, maillists@ivsn.com 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

Great! Exactly what I needed to remove cleanly user with loosed connection. Together with Glyph's "_self.page.putChild('your_data', YourDataResource())_" all my problems are solved. BTW: How to use *detach* and *detached* in LiveElement? I didn't find out... Many thanks, Paul

CORRECTED PREVIOUS ANSWER glyph@divmod.com wrote:

On 21 Apr, 08:57 pm, maillists@ivsn.com 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.

How can I add a child to the livepage session path?

The magical hash URL you're referring to is just an alias for your page instance. So all you need to do is, in your LiveElement:

self.page.putChild("your_data", YourDataResource())

That YourDataResource() object (and its attendant URL) will then live as long as your LivePage connection does.

This is an interesting use-case, and it should work fine - but be aware that you're relying on a pretty weird little corner of implementation details here. It certainly never occurred to *me* that somebody would want to do this :).

Particularly, there's no public API for generating this URL; you'll have to rely on the fact that url.here.child(self.clientID) keeps working.

Sorry for confusing - your solution WORK FINE, even better than my, I used wrong testing method. Open question is, how to find out, that client is gone. To stay with chatterbox example: ChatRoom().chatters is a list of registered clients How can I check, who of them is still connected and who is invalid, so I can delete them from the list? Thanks again, Paul