Dieter Maurer wrote:
Max M wrote at 2005-6-27 15:53 +0200:
...
So in a external method/module I have a function like this:
BUSY_STATE = 0
def sync_in_progress(busy=None):
global BUSY_STATE
if busy is None:
return BUSY_STATE
else:
BUSY_STATE = busy
Note that this is likely to fail.
The module containing an External Method is maintained in the
ZODB cache. As a consequence, each worker gets its own copy
and you cannot synchronize via global variables of such modules.
Use a true Python module (note that Zope does not import
the source file of an External Method; therefore, it is
not inside a module in the Python sense) when you need
synchronization via global module level variables.
I wrote a small tool and ended up with this:
BUSY_STATE = 0
def sync_in_progress(busy=None):
global BUSY_STATE
print '----------------'
print 'BUSY_STATE:', BUSY_STATE, 'busy:', busy
print ''
if not busy is None:
BUSY_STATE = busy
return BUSY_STATE
class Syncer(UniqueObject, PropertyManager,
SimpleItem.SimpleItem, ActionProviderBase):
def redirect(self, url):
self.REQUEST.RESPONSE.redirect(url)
def reset(self):
"reset"
return repr(sync_in_progress(0))
def sync(self):
"Syncs"
print '##################'
print 'sync start'
if not sync_in_progress():
sync_in_progress(1)
self.redirect('%s/sync_action' % self.absolute_url())
else:
return 'SYNC: in progress'
def sync_action(self):
"sync_action"
# do stuff
sync_in_progress(1)
self.sync_calendar()
self.sync_email()
sync_in_progress(0)
return 'SYNC: done'
It doesn't seem to work without the redirect. Which is the reason for
having both a sync and a sync_action method.
--
hilsen/regards Max M, Denmark
http://www.mxm.dk/
IT's Mad Science
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