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Re: commit: ldap/servers/slapd/overlays pcache.c

masarati@aero.polimi.it wrote:

hyc@OpenLDAP.org wrote:

Update of /repo/OpenLDAP/pkg/ldap/servers/slapd/overlays

Modified Files:
	pcache.c  1.177 ->   1.178

Log Message:
ITS#6251 framework for TTR. refresh not yet implemented.


At the moment the idea for implementing refresh is to refactor
syncrepl_entry() so that we can reuse the bulk of it. (Mainly the code
that
generates an appropriate Modify request based on the difference between
the
local entry and the remote entry.)

Detecting renames will be trickier since the cache typically won't have
any
entryUUIDs. I think we'll simply have to treat it as a Delete / Add...


... which makes sense for a cache, all in all.

Or, as implementing this feature seems to move towards on-demand sync
replication, we could always include entryUUID and entryCSN in the
requested attributes, e.g. by implicitly adding them to the attrsets.
Yes, but that's only viable if the target server supports entryUUID and entryCSN. There are plenty of pcache use cases where this will not be true. 

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