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Re: [grouper-users] Information about deleted groups and users

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  • From: Tom Barton <>
  • To: aragorn <>
  • Cc:
  • Subject: Re: [grouper-users] Information about deleted groups and users
  • Date: Tue, 24 Apr 2007 20:40:54 -0500

Grouper indeed does not have an incremental change notification capability at present, though that is the next substantial area for development in the roadmap.

Ldappc can provision grouper groups to an ldap directory. One of its core capabilities is computing a "logical diff" to determine the incremental changes to be made in the target directory. However, its performance in doing so with regard to isMemberOf style of membership information has been found too slow in at least one large scale experiment. Kathryn Huxtable might comment on that, and on an idea for remedying that issue that arose in discussion at the signet-grouper combined working group meeting here at the Internet2 conference last Monday.

I'm very open to ideas on how to extend grouper or associated applications like Ldappc to facilitate incremental provisioning of group changes. Seems like it's just about time to begin those design discussions.


aragorn wrote:

I'd like to ask, why there is now way how to get information from Grouper API about deleted groups or memberships? Do you have some special purpose (performance, size of database, ...) to not implement this functionality?

We need to propagate changes (CRUD of groups and memberships) made in Grouper to other systems (Sun IDM). I have idea how to "simple" solve this task. Just use another DB where will be archived all groups and memberships and set of classes to update this DB from Grouper. Before I start to implement this I'd like to know if you plan to add this functionality to future releases of core Grouper API or if we can contribute this "extension"?

Josef Krupicka
Centre for Information Technology (CIV)
University of West Bohemia in Pilsen

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