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From Francesco Chicchiriccò (JIRA) <>
Subject [jira] [Created] (SYNCOPE-1182) Use Remote Key in the Mapping to fetch external entities
Date Tue, 01 Aug 2017 13:42:00 GMT
Francesco Chicchiriccò created SYNCOPE-1182:

             Summary: Use Remote Key in the Mapping to fetch external entities
                 Key: SYNCOPE-1182
             Project: Syncope
          Issue Type: Improvement
          Components: core
            Reporter: Francesco Chicchiriccò
            Assignee: Francesco Chicchiriccò
             Fix For: 2.0.5, 2.1.0

For several operations, but in particular *before* and *after* executing a Propagation Task,
Syncope queries the External Resource to see if a matching item is found, and it does that
via ConnId's [GetApiOp|].
Such operation is implemented at Framework level, e.g. before reaching out any effective Connector,
via a [plain search|]
where the key is the special {{\_\_UID__}} attribute and the value is the one passed as argument,
alongside with ObjectClass.

Using {{GetApiOp}} used to make entirely sense in the old days of ConnId 1.3 and Syncope 1.1,
when the Mapping Item identified as {{AccountId}} (now {{Remote Key}}) was forced to [blank
the external attribute name|]: in such cases, in fact, {{\_\_UID__}}
was used as external attribute.

ConnId 1.4 slightly changed the way how the {{\_\_UID__}} attribute is managed: as a result,
since Syncope 1.2, it is mandatory to [specify an external attribute name for the Remote Key|].

To give an idea, the 1.1 sample would result in querying the External Resource for

{{\_\_UID__ == 'ilgrosso'}}

while the 2.0 sample from *should* result in

{{uid == 'ilgrosso'}}

but will instead produce the same query as in the past.

The problem here is that what actually {{\_\_UID__}} means is left to any Connector's implementation:
LDAP configures that via the {{UidAttribute}} property (and {{GidAttribute}} in 1.5.2-SNAPSHOT),
AD does something similar, others do differently.

>From one side, in fact, the {{Remote Key}} is defined in Syncope at high level (e.g. as
part of the Resource configuration, in the Mapping), while the raw {{\_\_UID__}} is still
used under the hoods in some cases (before executing a Propagation Task, as said above, for
example), hence it is the low level configuration (not Resource's but Connector's) that comes
into play.

The improvement is to get rid of {{GetApiOp}} and replace its usage in Syncope with search,
using as key the External attribute name defined in the mapping, rather than {{\_\_UID__}}.

With reference to LDAP, in fact, with such change Users will be looked up by {{uid}}, Groups
by {{cn}} and Realms by {{ou}} (if respective Mappings were set in these ways).

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