Grouper Developers Forum

[Peter DiCamillo <>]

At Brown we're using group types to indicate which systems need to be 
provisioned with a given group. For example, we have a type 
"GoogleGroup" which is assigned to groups we want to provision into 
Google Groups. We've started to work on doing that provisioning in near 
real-time using the change log. When we get a group type assign event, 
we create the group in the corresponding system. For group membership 
changes, we can lookup the types for the group and determine which 
systems are affected. For a group type unassign event we delete the 
group in the corresponding system. The only problem I've found is that 
when a group is deleted, we have no way of knowing which systems are 
affected. Since the group has been deleted, the change log consumer has 
 no way to determine which types it had.

I've experimented with a solution where the group deletion code 
generates group type unassign events for the types a group has before 
deleting the group. That works well for my needs, and I attached the svn 
diff for the code change. Could something along those lines be included 
in Grouper, or maybe some other solution?

Peter
Index: Group.java
===================================================================
--- Group.java  (revision 7442)
+++ Group.java  (working copy)
@@ -1198,6 +1198,18 @@
                 attributeAssign.delete();
               }
 
+              // generate an unassign event for each type the group has
+              Set<GroupType> groupTypes = Group.this.getTypes();
+              for (GroupType groupType : groupTypes) {
+                //change log into temp table
+                new ChangeLogEntry(true, 
ChangeLogTypeBuiltin.GROUP_TYPE_UNASSIGN,
+                  ChangeLogLabels.GROUP_TYPE_UNASSIGN.id.name(), "",
+                  ChangeLogLabels.GROUP_TYPE_UNASSIGN.groupId.name(), 
Group.this.getUuid(),
+                  ChangeLogLabels.GROUP_TYPE_UNASSIGN.groupName.name(), 
Group.this.getName(),
+                  ChangeLogLabels.GROUP_TYPE_UNASSIGN.typeId.name(), 
groupType.getUuid(),
+                  ChangeLogLabels.GROUP_TYPE_UNASSIGN.typeName.name(), 
groupType.getName()).save();
+              }
+              
               //deletes.add(this);            // ... And add the group last 
for good luck    
               String name = Group.this.getName(); // Preserve name for 
logging
               GrouperDAOFactory.getFactory().getGroup().delete(Group.this);