[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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>
> ------------------------------------------------------------------------
>
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