[PubSub] Question: best way to receive affiliation of subscription

[Tuomas Koski]

Cheers for all,

What do you think what could the best way for an entity "to know" it's
affiliation state after it has subscribed to a node?

Step 1: entity subscribes to a node:

<iq type='set'
    from='franci...@denmark.lit/barracks'
    to='pubsub.shakespeare.lit'
    id='sub1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <subscribe
        node='princely_musings'
        jid='franci...@denmark.lit'/>
  </pubsub>
</iq>


Step 2: Service replies with success

<iq type='result'
    from='pubsub.shakespeare.lit'
    to='franci...@denmark.lit/barracks'
    id='sub1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <subscription
        node='princely_musings'
        jid='franci...@denmark.lit'
        subscription='subscribed'/>
  </pubsub>
</iq>

In this point the entity does not yet know if it is a publisher, a
member, (or something else) in the node so it needs to retrieve it's
affiliation list
(http://xmpp.org/extensions/xep-0060.html#owner-affiliations-retrieve).
Same situation will happens with "Subscription Requests" with possible
Subscription approval notification.

Would it be completely silly idea to add the current affiliation state
of an entity to the success/event replies of above examples? Also what
is the reason to support "Retrieve Subscriptions" and "Retrieve
Affiliations" in separate stanzas?  Both must exists for an entity,
right? Would the workflow be more simply by adding the affiliation
state information to the "Retrieve Subscriptions" result set?

For example, Entity requests all current subscriptions

<iq type='get'
    from='franci...@denmark.lit/barracks'
    to='pubsub.shakespeare.lit'
    id='subscriptions1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <subscriptions/>
  </pubsub>
</iq>


Service returns all current subscriptions with affiliation state:

<iq type='result'
    from='pubsub.shakespeare.lit'
    to='franci...@denmark.lit'
    id='subscriptions1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <subscriptions>
      <subscription node='node1'
                           jid='franci...@denmark.lit'
                           subscription='subscribed'
                           affiliation='publisher' />
    </subscriptions>
  </pubsub>
</iq>


Br,
--
Tuomas
xmpp:tuo...@xmpp.lobstermonster.org