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diff --git a/roundup/instance.py b/roundup/instance.py
index 77dbb26dcf6013cb5826b8911f3e6c2e6ab51b6a..81c946167c6e7a8c0c6815ff2f10a35d288aaf0c 100644 (file)
--- a/roundup/instance.py
+++ b/roundup/instance.py
# BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
#
-# $Id: instance.py,v 1.3 2001-08-07 00:24:42 richard Exp $
+# $Id: instance.py,v 1.12 2004-02-11 23:55:08 richard Exp $
-''' Currently this module provides one function: open. This function opens
-an instance.
+'''Tracker handling (open tracker).
+
+Backwards compatibility for the old-style "imported" trackers.
'''
+__docformat__ = 'restructuredtext'
+
+import os
+
+class Vars:
+ ''' I'm just a container '''
+
+class Tracker:
+ def __init__(self, tracker_home):
+ self.tracker_home = tracker_home
+ self.select_db = self._load_python('select_db.py')
+ self.config = self._load_config('config.py')
+ raise NotImplemented, 'this is *so* not finished'
+ self.init = XXX
+ self.Client = XXX
+ self.MailGW = XXX
+
+ def open(self):
+ return self._load_config('schema.py').db
+ self._load_config('security.py', db=db)
-import imp
-class Opener:
+ def _load_python(self, file):
+ file = os.path.join(tracker_home, file)
+ vars = Vars()
+ execfile(file, vars.__dict__)
+ return vars
+
+
+class TrackerError(Exception):
+ pass
+
+
+class OldStyleTrackers:
def __init__(self):
self.number = 0
- self.instances = {}
+ self.trackers = {}
+
+ def open(self, tracker_home):
+ ''' Open the tracker.
- def open(self, instance_home):
- if self.instances.has_key(instance_home):
- return imp.load_package(self.instances[instance_home],
- instance_home)
+ Raise ValueError if the tracker home doesn't exist.
+ '''
+ import imp
+ # sanity check existence of tracker home
+ if not os.path.exists(tracker_home):
+ raise ValueError, 'no such directory: "%s"'%tracker_home
+
+ # sanity check tracker home contents
+ for reqd in 'config dbinit select_db interfaces'.split():
+ if not os.path.exists(os.path.join(tracker_home, '%s.py'%reqd)):
+ raise TrackerError, 'File "%s.py" missing from tracker '\
+ 'home "%s"'%(reqd, tracker_home)
+
+ if self.trackers.has_key(tracker_home):
+ return imp.load_package(self.trackers[tracker_home],
+ tracker_home)
self.number = self.number + 1
- modname = '_roundup_instance_%s'%self.number
- self.instances[instance_home] = modname
- return imp.load_package(modname, instance_home)
+ modname = '_roundup_tracker_%s'%self.number
+ self.trackers[tracker_home] = modname
-opener = Opener()
-open = opener.open
+ # load the tracker
+ tracker = imp.load_package(modname, tracker_home)
-del Opener
-del opener
+ # ensure the tracker has all the required bits
+ for required in 'config open init Client MailGW'.split():
+ if not hasattr(tracker, required):
+ raise TrackerError, \
+ 'Required tracker attribute "%s" missing'%required
+ return tracker
+
+OldStyleTrackers = OldStyleTrackers()
+def open(tracker_home):
+ if os.path.exists(os.path.join(tracker_home, 'dbinit.py')):
+ # user should upgrade...
+ return OldStyleTrackers.open(tracker_home)
+
+ return Tracker(tracker_home)
-#
-# $Log: not supported by cvs2svn $
-# Revision 1.2 2001/08/07 00:15:51 richard
-# Added the copyright/license notice to (nearly) all files at request of
-# Bizar Software.
-#
-# Revision 1.1 2001/08/05 07:43:52 richard
-# Instances are now opened by a special function that generates a unique
-# module name for the instances on import time.
-#
-#
-#
# vim: set filetype=python ts=4 sw=4 et si