RE: [Exim] Why no plugin architecture for exim?

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Autor: Nigel Metheringham
Data:  
Para: exim-users
Asunto: RE: [Exim] Why no plugin architecture for exim?
On Tue, 2004-03-23 at 13:28, Dickenson, Steven wrote:
> There was a patch a while ago that made the local_scan function dynamically
> loadable. I'm not sure if it's since been included in the base source, but
> the Debian package has it applied.


Its packaged with the SA-Exim releases - see
    http://marc.merlins.org/linux/exim/sa.html


> Beyond local_scan, where do you see a need for a plugin? Just about every
> other aspect of Exim is so easily extensible, using some external resource
> or program is trivial.


This is actually more a question for the exim-dev list, although a
little premature in that we need to nail down the how things should be
done before we commit to what should be done...

A potential answer would be that the stuff with a defined linkage
interface - ie
      * routers
      * transports
      * lookups
      * authenticators
      * acls
      * local_scan (which is sort of the odd one out here)


could all be dynamically loaded. This would allow better binary
packaging for example - ie you don't end up having to make a tailored
exim for each potential situation, or making a fat daemon which then has
other dependencies such as requiring 3 lots of sql support libraries.

    Nigel.
--
[ Nigel Metheringham           Nigel.Metheringham@??? ]
[ - Comments in this message are my own and not ITO opinion/policy - ]