Plugin.__init__() now checks that subclass hasn't defined attributes that conflict with the logger methods; added corresponding unit test

ipalib/frontend.py

@@ -1087,7 +1087,6 @@ class Property(Attribute):
             rules=self.rules,
             normalize=self.normalize,
         )
-        super(Property, self).__init__()
 
     def __rules_iter(self):
         """

ipalib/plugable.py

@@ -263,8 +263,13 @@ class Plugin(ReadOnly):
             self.summary = '<%s>' % self.fullname
         else:
             self.summary = self.doc.split('\n\n', 1)[0]
-        log = logging.getLogger('ipa')
-        for name in ('debug', 'info', 'warning', 'error', 'critical'):
+        log = logging.getLogger(self.fullname)
+        for name in ('debug', 'info', 'warning', 'error', 'critical', 'exception'):
+            if hasattr(self, name):
+                raise StandardError(
+                    '%s.%s attribute (%r) conflicts with Plugin logger' % (
+                        self.name, name, getattr(self, name))
+                )
             setattr(self, name, getattr(log, name))
 
     def __get_api(self):

tests/test_ipalib/test_plugable.py

@@ -337,6 +337,14 @@ class test_Plugin(ClassChecker):
         assert o.doc is None
         assert o.summary == '<%s>' % o.fullname
 
+        # Test that Plugin makes sure the subclass hasn't defined attributes
+        # whose names conflict with the logger methods set in Plugin.__init__():
+        class check(self.cls):
+            info = 'whatever'
+        e = raises(StandardError, check)
+        assert str(e) == \
+            "check.info attribute ('whatever') conflicts with Plugin logger"
+
     def test_implements(self):
         """
         Test the `ipalib.plugable.Plugin.implements` classmethod.