Re: (ITS#6666) Feature Request: Triggers implementation

[hyc@symas.com]

nick@eurobjects.com wrote:
> Full_Name: Nick Milas
> Version: 2.3.43
> OS: CentOS 5.5
> URL: ftp://ftp.openldap.org/incoming/
> Submission from: (NULL) (94.65.0.240)
>
>
> Triggers in openldap is a much-desired feature. As mentioned in various places,
> openldap community suggests using the accesslog overlay to log changes and then
> use another process to listen to changes (e.g. back-perl) or back-sock (I saw
> the example in the source tree), feasibly back-shell or even write one's own
> overlay. The problem is that all those methods require low-level programming
> (not to mention various incompatibilities with system components), which makes
> them unusable by administrators, that is by those who mainly install and run
> openldap and directories. As a result, I would suggest to slightly enhance
> future versions by offering minimal trigger support over the accesslog overlay.
>
>
> So I would suggest to support in slapd.conf a statement like:
> "on log attr<attribute name>  call<bash script>" (with obvious meaning).
>
> I consider this would allow the openldap average administrator to use particular
> attributes as triggers to start scripts which in turn offer the advantage of
> full access to script programming, which does not require low-level
> programming.
>
>
Spawning processes is not thread safe. The solution you propose will never be 
implemented. Alternative suggestions are welcome.

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