Am Freitag 26 Februar 2010 13:30:55 schrieb masarati(a)aero.polimi.it:
> > Hi,
> > while taking up some loose ends on my work on delete support for
> > back- config (enabled with -DSLAP_CONFIG_DELETE) I wondered how we
> > should deal with the deletion of the syncprov overlay when there
> > are active refreshAndPersist sessions. What errorcode should we
> > sent when closing such a connection? To me LDAP_UNAVAILABLE sound
> > like the best choice. LDAP_UNWILLING_TO_PERFORM might also be ok.
> What about an unsolicited notification (RFC 4511, 4.4)?
Hm, yes. A "Notice of Disconneciton" might work as well. But that would
result in the client connection been taken down, which is probably not
desired. For syncrepl connections from slapd-consumers this might be ok.
But other LDAPSync clients might have other operations active on the same
connection which wouldn't be affected by the removal of the syncprov
overlay, I guess.
Returning an error just for the LDAPSync related Search seemed more
logical to me.
In any case, (ab)using an existing error code might not be optimal. as a
consequence of removing slapo-syncprov(5), any consumer using it needs to
be clearly informed that just retrying later is probably not an option.
On the contrary, returning a dedicated error would allow to exactly inform
the consumer about what it can expect from the (former) producer, and
possibly to suggest a strategy (e.g. the message could contain a hint
about some substitute producer, or so).