[389-devel] Entry USN (pushed to master)

[Noriko Hosoi]

Reviewed by Nathan (Thank you!!)

Pushed to master.

--noriko

On 07/21/2009 01:08 PM, Noriko Hosoi wrote:
>  Regarding the first question from Andrey:
>
>     The USNs seem to be unique within a suffix/backend. Should we enable
>     the uniqueness plug-in for them? If not can we be sure that a manual
>     change of entryUSN will not interfere with the correct functioning
>     of the plug-in?
>
>  Nathan suggested to set SLAPI_ATTR_FLAG_NOUSERMOD to the attribute 
>  entryusn as follows.
>
>     diff --git a/ldap/servers/slapd/back-ldbm/init.c
>     b/ldap/servers/slapd/back-ldbm/
>     index a4ff79c..be9c114 100644
>     --- a/ldap/servers/slapd/back-ldbm/init.c
>     +++ b/ldap/servers/slapd/back-ldbm/init.c
>     @@ -86,7 +86,7 @@ ldbm_back_add_schema( Slapi_PBlock *pb )
>                 rc |= add_ldbm_internal_attr_syntax( "entryusn",
>                             LDBM_ENTRYUSN_OID, INTEGER_SYNTAX_OID,
>     INTFIRSTCOMPMATCH
>     -                       SLAPI_ATTR_FLAG_SINGLE );
>     +                         
>  SLAPI_ATTR_FLAG_SINGLE|SLAPI_ATTR_FLAG_NOUSERMOD );
>                 return rc;
>      }
>
>  The flag nicely prevents the manual update on EntryUSN.
>
>     ldapmodify -D "cn=Directory Manager" -w /password/
>     dn: uid=tuserX,dc=example,dc=com
>     changetype: modify
>     replace: entryusn
>     entryusn: 100
>
>     modifying entry uid=tuserX,dc=example,dc=com
>     ldap_modify: DSA is unwilling to perform
>     ldap_modify: additional info: no modifiable attributes specified
>
>  Nathan also pointed out several typos as well as an issue of internal 
>  deletion.  Currently, if the delete is initiated internally, the entry 
>  is not converted to a tombstone unless the backend is replicated.  I'm 
>  adding this issue to ToDo list for now.
>  Attached patch includes the above diff and typo fixes.
>
>  Thanks so much to Nathan for his reviews and suggestions.
>  --noriko
>
>  Noriko Hosoi wrote:
> > First cut for implementing Entry USN.
> > See http://directory.fedoraproject.org/wiki/Entry_USN for the design 
> > details.
> > This change includes a bug fix for "db2ldif -r"; event queue system 
> > was not
> > shutdown before the plugins are closed, which could have crashed the 
> > command
> > line utility.
> >
> > Thanks,
> > --noriko
> > ------------------------------------------------------------------------
> >
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