Thanks. I understand. The only "messy" solution I have thusfar is something like this: ...at bottom of module in product... def installConnections(): def install(): #1) get zope app object #2) loop through zope objects and create connections manually ... thread.start_new(install, ()) ThreadedAsync.register_loop_callback(installConnections)

Herman Lbh pna'g gehfg lbhe rlrf vs lbhe vzntvangvba'f bhg bs sbphf. -Znex Gjnva ----- Original Message ----- From: "Tino Wildenhain" <tino@wildenhain.de> To: "Herman Geldenhuys" <hgeldenhuys@gmsonline.co.za> Sent: Monday, July 28, 2003 4:38 PM Subject: Re: [Zope] Running a script at Zope startup

Hi Herman,

Herman Geldenhuys wrote:

...

Hi

My problem is that the client connection must be started as soon as Zope starts up. Ie, the attribute must be initialized prior to accessing it from within the Zope context. As soon as Zope starts, my client connection must be made, so that the remote server via a persistent connection to the client, can invoke callback methods when an event occurs on the server's side. So, the connection attribute is rarely ever called from within the same "process". Is'nt there a "startup" event for Zope(event indication all modules are finished loaded)?

This is not possible this way. Either you change your server to "plant" a method on it which calls via HTTP (for example XMLRPC) zope when the event occurs or you have to create a separate thread which lives outside the ZODB-Connection (somewhat like Zopes FTP server)

Persistent connections from within a published request are impossible. (And make no sense either)

Regards Tino

...

Thanks again.

Herman

Lbh pna'g gehfg lbhe rlrf vs lbhe vzntvangvba'f bhg bs sbphf. -Znex

Gjnva

...

----- Original Message ----- From: "Alexis Roda" <arv@si.urv.es> To: "Herman Geldenhuys" <hgeldenhuys@gmsonline.co.za> Cc: "zope" <zope@zope.org> Sent: Monday, July 28, 2003 1:57 PM Subject: Re: [Zope] Running a script at Zope startup

...

...

---------- From: Alexis Roda[SMTP:ARV@SI.URV.ES] Sent: Monday, July 28, 2003 1:57:09 PM To: Herman Geldenhuys Cc: zope Subject: Re: [Zope] Running a script at Zope startup Auto forwarded by a Rule

Herman Geldenhuys wrote:

...

Thanks Tino!

I understand that I need to initialize a _v_ attribute each time I

create my

...

...

client connection, seeing that it cannot be stored in the ZODB. My

problem

...

...

is that I need a way to initiate that attribute at Zope's startup. Lets

say

...

...

that there are certain ZOPE objects in the hierarchy of ZOPE. I need to initialize all these objects _v_clientConnection attributes at Zope's startup. Does anybody know of a way?

I have not followed the thread, so I may be missing something, but I think that Tino's answer is right. You may achieve this defining a getter method, something like:

def get_client_connection(self) : if not hasattr(self, "_v_clientConnection") : self._v_clientConnection = xxxxx return sef._v_clientConnection

if you access this attribute through the method, and never directly, you'll always get a "valid" client connection.

HTH -- //// (@ @) ---------------------------oOO----(_)----OOo------------------------ Los pecados de los tres mundos desapareceran conmigo. Alexis Roda - Universitat Rovira i Virgili - Reus, Tarragona (Spain) --------------------------------------------------------------------

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