February 2011 - Zope

Fix for garbled saves of UTF8 TTW PageTemplates and emacs over ftp
by Andreas Elvers 25 Feb '11

25 Feb '11

Hi, if you edit TTW PageTemplates through emacs over ftp, you may encouter your UTF8 String garbled after a save. try adding: <meta tal:replace="nothing" http-equiv="content-type" content="text/html;charset=utf-8" /> at the top of the page. Helped me. - Andreas

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How can I access/use the i18n locales object in Zope 2.13.4?
by Sascha.Boch＠jci.com 24 Feb '11

24 Feb '11

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Re: [Zope] ZODB Key error in root Zope database
by Brian Brinegar 18 Feb '11

18 Feb '11

FYI, I was able to successfully remove the cross storage reference in the root of my main Zope database by explicitly setting the missing database connection to a hacked DummyConnection instance. I probably could have dug deeper to create a real connection, but this worked. from ZODB import FileStorage, DB import transaction storage = FileStorage.FileStorage('Data.fs') app = DB(storage).open().root()['Application'] base_conn = app._p_jar class DummyConnection: """ implements enough of a connection to allow for removing of the cross database reference """ def __init__(self): self.connections = [] self._cache = {} def get(self, key): return None def open(self, **kw): return DummyConnection() base_conn._db.databases['site1'] = DummyConnection() app._objects = tuple([i for i in app._objects if i['id'] != 'badID']) transaction.get().commit() It's quite the hack, but allowed us to get the database back. Brian Brinegar Web Services Coordinator Engineering Computer Network -- Brian Brinegar Web Services Coordinator Engineering Computer Network

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ZODB Key error in root Zope database
by Brian Brinegar 18 Feb '11

18 Feb '11

We've got a bit of a situation... We run Zope 2.11 with a main ZODB and a few dozen separate file storages for sub-sites. Occasionally, we've encountered the problem where a cut-and-paste occurs between storages and upon a pack results in a key error. Normally, we avoid this because the FileStorages represent individual sites. Last night something happened where a script was cut-and-pasted from one of the sub-storages into the main, root-level, database. Upon a restart we encountered a key error: File "/var/local/zope/Zope-2.11.4-1/lib/python/ZODB/Connection.py", line 361, in get_connection new_con = self._db.databases[database_name].open( KeyError: 'site1' Normally, we've encountered these errors when a database is packed and the solution is to revert to a pre-pack database and remove or fix the offending object. In this case, we can't even start Zope or mount the storage in a script to remove the offending items. Before I go on, I found that ZODB 3.9 provides options to disallow cross-database references and we'll work to get to this version during our next upgrade cycle. In the mean time we've reverted to a previous backup prior to the offending object being placed in the root database. This resulted in about 200 MB of data loss. I would like a way to mount the corrupted database and attempt to determine exactly what was lost. What we've tried so far has gone like this: from ZODB import FileStorage, DB from OFS.Folder import Folder storage = FileStorage.FileStorage('BadData.fs') db = DB(storage) conn = db.open() root = conn.root() app = root['Application'] app.manage_deleteObjects(['OffendingObject']) # This throws the same exception so we tried working around the # mechanics of manage_deleteObjects with this. app._objects = tuple([i for i in app._objects if i['id'] != 'OffendingObject']) Same exception. Can't access the database. We've tried using _setOb to replace the object. Any suggestions? It seems as though it needs to be able to access _objects before it mounts the mounted databases. Thanks, -- Brian Brinegar Web Services Coordinator Engineering Computer Network

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Forcing zope to preload objects in cache
by Marco Bizzarri 08 Feb '11

08 Feb '11

Hi all. I've a Zope application; response time in the application is quite different if the cache is already loaded with data from the ZODB (a Data.fs served over ZEO). The Zope/ZEO server is restarted every night, so, the cache is emptied every night, and the first users to access the objects in the morning suffer from longer response times. I'd like to force Zope to reload the cache; of course, I could access various pages using a wget or something liket that; but how can I force Zope to 'fill' all connections, and just one? Regards Marco -- Marco Bizzarri http://code.google.com/p/qt-asterisk/ http://notenotturne.blogspot.com/ http://iliveinpisa.blogspot.com/

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Logo Guidelines for Grok and Bluebream
by Jan Ulrich Hasecke 02 Feb '11

02 Feb '11

Hi all, preparing a brochure about Zope and friends I would like to know whether there are any guidelines for using the Grok- and Bluebream-Logo. Am I right that neither Grok nor Bluebream are trademarks owned by the Zope Foundation? TIA -- Jan Ulrich Hasecke DZUG e.V. (Deutschsprachige Zope User Group)

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