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Minutes of MW MoM meeting 27 of June

Present: Alessandro, Marc, Francois, Francesco, Vito, Kris and Stefan

- Comments to the Previous minutes:
        - Softwired will come on Friday 30 June aroud 10h. Marc will make sure
that the latest tests are sent to them and organise a small meeting
before to discuss the agenda.
        - Stefan, The IUT student just arrived. Francois will organise his
work.

- Continuation of MoM tests
        After the discussion round with IBUS we will spend summer on further
tests with the MW prototype. Talarian has been contacted for the state
of work on JMS API. No decision on product selection will be taken
before autumn. Francesco said that there is no worry of selecting a
product because we have been using it for tests.  The API's are really
compatible. This is not the same for features such as wild cards in
topic name.

- Relation Of MW project to the LHC Data Interchange Working Group
(LDIWG).
        Marc reported that at the last Controls Board it has been proposed that
the Middleware Project provides the transport solution for LDIWG. This
proposition is related to our efforts of seeking a common solution with
ST. It is planned that the MW project will make a presentation to the
Controls Board in September. The decision about Phase II of LDIWG will
be postponed until then. The final report of LDIWG (Phase I) is to be
published soon.

- Collaboration with ST.
        This is "second priority" at the present time and this activity should
not delay the delivery of the MW prototype. Nevertheless we have to keep
the speed for the collaboration and profit from the resources which can
be envolved at ST. Kris will organise a meeting with them on Tuesday in
2 weeks time. On the Agenda: ST naming space and use of naming services,
public and private API's, our strategy of integrating MoMs. Proposed
time 9h.

- MoM integration.
        Francois and Vito came to the conclusion that the API proposed by
Nikolai can be used as "private MoM API" as well. They will continue on
this track.

        Francesco explained on a sequence diagram how JMS is used together with
JNDI to establish a session with the broker and publish or subscribe on
a subject. He also made a simple pub/sub interface which is using both
JMS and JNDI. This could evolve to the official MW interface for
pub/sub.
It has been requested to compare the cost of using predefined topic
objects with JNDI to the cost of making a default mapping from
device/property name and creating topic objects on-the-fly.

        Vito distributed the Rose drawings with class and sequence diagrams
for the public MW API. He is asking for rapid comments.

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Dr. Kris Kostro                 | Tel:   +41 22 767 5437
CERN SL/CO Controls Group       | Fax:   +41 22 767 5800
CH-1211 Geneva 23               | GSM:   +41 79 201 4124
Switzerland                     | mailto:Kris.Kostro@cern.ch
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