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Barry Pearce
barry.pearce at copyrightwitness.net
Sat Apr 9 13:36:04 EDT 2005
Hi Jim, >> This is an interesting issue - I have my own handler but I have a >> problem where mod_python does NOT cause modules to be reloaded - >> despite having changed on the disk I would have expected the module to >> reload...but it stays the same until I restart the web server - >> perhaps there is something Im doing wrong!! >> >> I really dont want to restart the apache server to upgrade my software >> - it kills all current sessions and downloads.... >> >> Any ideas? > > > My impression is that the handler specified in the apache PythonHandler > directive does not get reloaded when changed. Of course I may be > completely off the mark here. Ah. OK....thats why everything that it in turn imports also remains fixed in memory...its just a pain in the bum when I change something that the re-import does not take place. > For my code, the PythonHandler cms.publisher is just a stub that does a > little pre-processing and then uses apache.import_module() to get my > real handler. It's apache.import_module that does the reloading magic, > and so I avoid restarting apache when my handler code changes. I figure > once my code has pretty much settled down, I can change the > PythonHandler to specify the real handler. The issue comes during upgrade of live sites with many users with concurrent sessions and no 'quiet' period per say where a restart could be sensibly placed. Interestingly I have been using a large number of python files and using the standard python import - however, if the top level module is not reimported it will never execute any of the other import statements. Interesting...sorry im rambling... Perhaps I need to re-evaluate my import strategy and call apache.import_module() instead of just relying on the python import... Now I dont want it all checked on each request - but maybe I can write a handler that I can send a request to which re-evalutes all imported modules and then appropriately reloads them... hmmm...? any ideas? Cheers, Barry
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