Re: [Zope3-Users] Get a site
On Sunday 28 January 2007 12:23, Florian Lindner wrote: exceptions.ValueError: I/O operation on closed file any idea what caused it? I think you violate the transaction mechanism. I think it would be easier to make a call via the publisher. Regards, Stephan -- Stephan Richter CBU Physics Chemistry (B.S.) / Tufts Physics (Ph.D. student) Web2k - Web Software Design, Development and Training ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Get a site
Am Donnerstag, 8. März 2007 20:10 schrieb Stephan Richter: On Sunday 28 January 2007 12:23, Florian Lindner wrote: exceptions.ValueError: I/O operation on closed file any idea what caused it? I think you violate the transaction mechanism. I think it would be easier to make a call via the publisher. The problem was that I forgot to close the connection, resp. called the close function on the wrong object. Regards, Florian ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Get a site
Am Montag, 22. Januar 2007 08:32 schrieb Christian Theune: Hi, Am Sonntag, den 21.01.2007, 14:44 +0100 schrieb Florian Lindner: Hello, I am in a function that has no context and want to set a site. The function is called periodically from a scheduler: from scheduler import loop def onStartup(event): refresher = loop.LoopTask(releaseRefreshEvent, interval=60) In this function I need to call getUtilitiesFor which needs a site set but I don't know how to get a site: (Pdb) from zope.app.component import hooks (Pdb) from zope.app.zapi import * (Pdb) hooks.setSite(getSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' (Pdb) hooks.setSite(getGlobalSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' You don't set the site managers as a site, but the objects that are sites have site managers (or component registries) attached to them. Also, the global registry is always active, without settinga site. Just getting the root object (which AFAIK always is a site) would be ok. Or the object of static path. You'd have to open a connection to the database, get the root object and use that with setSite(). I don't have the complete spelling for that in my head though. If this is code that runs within Zope 3, then you might not want to talk to the database directly anyway because of the automatic transaction management. Ok, I do it this way now: def releaseRefreshEvent(): Calls all utlities that have a INewsfeed interface registered. print releaseRefreshEvent!! db = getUtility(ZODB.interfaces.IDatabase) conn = db.open() root = conn.root().data['Application'] zope.app.component.hooks.setSite(root) utils = getUtilitiesFor(INewsfeed) for i in utils: print Utility called:, i[0] i[1].sendNotification() db.close() called every 60 seconds. This works a few times but then gives an error: 2007-01-28T18:19:01 INFO root Startup time: 16.079 sec real, 4.780 sec CPU releaseRefreshEvent!! releaseRefreshEvent!! Unhandled error in Deferred: Traceback (most recent call last): File /home/florian/Zope3/src/zope/app/twisted/main.py, line 89, in main reactor.run() File /home/florian/Zope3/src/twisted/internet/posixbase.py, line 206, in run self.mainLoop() File /home/florian/Zope3/src/twisted/internet/posixbase.py, line 214, in mainLoop self.runUntilCurrent() File /home/florian/Zope3/src/twisted/internet/base.py, line 541, in runUntilCurrent call.func(*call.args, **call.kw) --- exception caught here --- File /home/florian/Zope3/src/twisted/internet/task.py, line 84, in __call__ self.f(*self.a, **self.kw) File /home/florian/Desktop/zope/lib/python/CS/centershock/centershock.py, line 21, in releaseRefreshEvent root = conn.root().data['Application'] File /home/florian/Zope3/src/ZODB/Connection.py, line 304, in root return self.get(z64) File /home/florian/Zope3/src/ZODB/Connection.py, line 204, in get p, serial = self._storage.load(oid, self._version) File /home/florian/Zope3/src/ZODB/FileStorage/FileStorage.py, line 549, in load h = self._read_data_header(pos, oid) File /home/florian/Zope3/src/ZODB/FileStorage/format.py, line 187, in _read_data_header self._file.seek(pos) exceptions.ValueError: I/O operation on closed file any idea what caused it? Thanks, Florian ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Get a site
Am Montag, 22. Januar 2007 09:40 schrieb FB: Hi, On Mon, Jan 22, 2007 at 08:32:21AM +0100, Christian Theune wrote: [snip] You'd have to open a connection to the database, get the root object and use that with setSite(). I don't have the complete spelling for that in my head though. db = zapi.getUtility(IDatabase) conn=db.open() root=conn.root().data['Application'] Thanks, this way it works! Regards, Florian ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Get a site
Hi, On Mon, Jan 22, 2007 at 08:32:21AM +0100, Christian Theune wrote: [snip] You'd have to open a connection to the database, get the root object and use that with setSite(). I don't have the complete spelling for that in my head though. db = zapi.getUtility(IDatabase) conn=db.open() root=conn.root().data['Application'] Regards, Frank ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Get a site
Am Montag, 22. Januar 2007 08:32 schrieb Christian Theune: Hi, Am Sonntag, den 21.01.2007, 14:44 +0100 schrieb Florian Lindner: Hello, I am in a function that has no context and want to set a site. The function is called periodically from a scheduler: from scheduler import loop def onStartup(event): refresher = loop.LoopTask(releaseRefreshEvent, interval=60) In this function I need to call getUtilitiesFor which needs a site set but I don't know how to get a site: (Pdb) from zope.app.component import hooks (Pdb) from zope.app.zapi import * (Pdb) hooks.setSite(getSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' (Pdb) hooks.setSite(getGlobalSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' You don't set the site managers as a site, but the objects that are sites have site managers (or component registries) attached to them. Also, the global registry is always active, without settinga site. And how do I get the global registry? Just getting the root object (which AFAIK always is a site) would be ok. Or the object of static path. You'd have to open a connection to the database, get the root object and use that with setSite(). I don't have the complete spelling for that in my head though. If this is code that runs within Zope 3, then you might not want to talk to the database directly anyway because of the automatic transaction management. The code is not being run out of Zope. It's just not part of any class, but it's only called when Zope is app and running. This function is called upon a IProcessStartingEvent event: def onStartup(event): Perform initializations on startup of the server. refresher = loop.LoopTask(releaseRefreshEvent, interval=60) refresher.start() in the releaseRefreshEvent I want to call all registered utilities: def releaseRefreshEvent(): Calls all utlities that have a INewsfeed interface registered. utils = getUtilitiesFor(INewsfeed) for i in utils: print Utility called:, i.__name__ i.sendNotification() but that always returns no utilites at all. IMHO the problem is that a site is not set. How would you do that? (sorry, your answer is somehow too sophisticated for me...) Thanks, Florian ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
[Zope3-Users] Get a site
Hello, I am in a function that has no context and want to set a site. The function is called periodically from a scheduler: from scheduler import loop def onStartup(event): refresher = loop.LoopTask(releaseRefreshEvent, interval=60) In this function I need to call getUtilitiesFor which needs a site set but I don't know how to get a site: (Pdb) from zope.app.component import hooks (Pdb) from zope.app.zapi import * (Pdb) hooks.setSite(getSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' (Pdb) hooks.setSite(getGlobalSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' Just getting the root object (which AFAIK always is a site) would be ok. Or the object of static path. Thanks, Florian ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Get a site
Hi, Am Sonntag, den 21.01.2007, 14:44 +0100 schrieb Florian Lindner: Hello, I am in a function that has no context and want to set a site. The function is called periodically from a scheduler: from scheduler import loop def onStartup(event): refresher = loop.LoopTask(releaseRefreshEvent, interval=60) In this function I need to call getUtilitiesFor which needs a site set but I don't know how to get a site: (Pdb) from zope.app.component import hooks (Pdb) from zope.app.zapi import * (Pdb) hooks.setSite(getSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' (Pdb) hooks.setSite(getGlobalSiteManager()) *** AttributeError: 'BaseGlobalComponents' object has no attribute 'getSiteManager' You don't set the site managers as a site, but the objects that are sites have site managers (or component registries) attached to them. Also, the global registry is always active, without settinga site. Just getting the root object (which AFAIK always is a site) would be ok. Or the object of static path. You'd have to open a connection to the database, get the root object and use that with setSite(). I don't have the complete spelling for that in my head though. If this is code that runs within Zope 3, then you might not want to talk to the database directly anyway because of the automatic transaction management. Christian -- gocept gmbh co. kg - forsterstraße 29 - 06112 halle/saale - germany www.gocept.com - [EMAIL PROTECTED] - phone +49 345 122 9889 7 - fax +49 345 122 9889 1 - zope and plone consulting and development signature.asc Description: Dies ist ein digital signierter Nachrichtenteil ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
