Re: asynchronous event notification?

[Howard Chu <hyc@symas.com>]

Phillip Rhodes wrote:
> Hi all, I have a question regarding OpenLDAP and asynchronous events.  
> Does OpenLDAP currently support
> any form of event notification?  I spent a lot of time
> Google'ing and searching the archives of this list
> and saw some old discussion from back in 1999 on this
> subject, but nothing current.
>
> In case it matters, what I'm seeking is the ability
> to receive notification of events such as: adding
> an entry, deleting an entry, modifying an entry, etc.
> The purpose of this would be for integration with
> other software... ex: I add a "user" to OpenLDAP,
> and want to programatically update the "user" database
> of another application to make it aware of that user, etc.

The typical directory-friendly way of doing this is to write an LDAP 
client that issues a persistent search for all of the events of 
interest. That client can then feed the data into whatever other 
database you're working with. The clever way to do this is to write a 
module for OpenLDAP slapd that uses the foreign database's API on the 
backend and maps it into an LDAP view for the frontend (e.g. back-sql, 
back-passwd, etc...) and use a replication engine to propagate changes 
in the main LDAP database into the foreign database.

--
 -- Howard Chu
 Chief Architect, Symas Corp.  http://www.symas.com
 Director, Highland Sun        http://highlandsun.com/hyc
 OpenLDAP Core Team            http://www.openldap.org/project/