_commitResources() and _cleanup(): When an exception occurs during

the former, remember it and raise it after calling _cleanup.  If
abort_sub() or tpc_abort() in _cleanup() also raise exceptions, log
them but don't propagate them.

This stops stray output produced by tests testExceptionInTpcAbort and
testExceptionInSubAbortSub.

Grrrrr:  I haven't yet been able to figure out how to get logging to work
in ZODB, so haven't yet been able to check that the new logging is
reasonable.

src/ZODB/tests/testTransaction.py

@@ -36,7 +36,7 @@ TODO
     add in tests for objects which are modified multiple times,
     for example an object that gets modified in multiple sub txns.
 
-$Id: testTransaction.py,v 1.22 2004/04/02 19:48:22 tim_one Exp $
+$Id: testTransaction.py,v 1.23 2004/04/06 01:06:41 tim_one Exp $
 """
 
 import unittest
@@ -385,9 +385,6 @@ class TransactionTests(unittest.TestCase):
         self.sub1.modify(nojar=1)
 
         try:
-            # XXX Transaction._cleanup() prints a stray "error tpc_abort"
-            # XXX (the string value of the TestTxnException instance raised)
-            # XXX to stdout.
             get_transaction().commit()
         except TestTxnException:
             pass

src/transaction/_transaction.py

@@ -305,6 +305,7 @@ class Transaction(object):
             # to revert the changes in each of the resource managers.
             # For top-level transactions, it must be freed from the
             # txn manager.
+            t, v, tb = sys.exc_info()
             try:
                 self._cleanup(L)
             finally:
@@ -312,7 +313,7 @@ class Transaction(object):
                     self.status = Status.FAILED
                     if self._manager:
                         self._manager.free(self)
-            raise
+            raise t, v, tb
 
     def _cleanup(self, L):
         # Called when an exception occurs during tpc_vote or tpc_finish.
@@ -323,15 +324,15 @@ class Transaction(object):
             if id(rm) in self._sub:
                 try:
                     rm.abort_sub(self)
-                except Exception, err:
-                    # XXX Just printing the error doesn't seem good enough.
-                    print err
+                except Exception:
+                    self.log.error("Error in abort_sub() on manager %s",
+                                   rm, exc_info=sys.exc_info())
             else:
                 try:
                     rm.tpc_abort(self)
-                except Exception, err:
-                    # XXX Just printing the error doesn't seem good enough.
-                    print err
+                except Exception:
+                    self.log.error("Error in tpc_abort() on manager %s",
+                                   rm, exc_info=sys.exc_info())
 
     def _getResourceManagers(self, subtransaction):
         L = []