[Css-csts] Updated Service Control CSTS White Book on CWE

[John Pietras]

CSTSWG colleagues --

I've posted an update of the draft Service Control CSTS White Book on
the CWE at URL

http://cwe.ccsds.org/css/docs/CSS-CSTS/CWE%20Private/Future%20Services%2
0using%20Toolkit/Service%20Control%20CSTS/ServiceControlCSTS_W-0.2.doc

or http://tinyurl.com/SC-CSTS-W-0-2

 

This update reflects the comments that were made during the review in
London. Also, the update reflects a new, tentative reformulation of the
directive-identifier and directive-qualifier parameters of the
EXECUTIVE-DIRECTIVE operation of the Throw Event procedure. Yves and I
have been discussing possible changes to simplify these parameters and
remove ambiguity in how they are to be used. The formulation that is
reflected in the latest SC-CSTS update is as follows:

 

The directive-identifier is simply an ASCII text string.

 

The directive-qualifier is a choice among:

- an octet string;

- a null value;

- a parameter list, where each "record" in the list consists of a name
and typed value (that is, it is cast as type TypeAndValue, as defined in
the FW ASN.1);

- an extension parameter of type Embedded (= EMBEDDED PDV).

 

That is, the ASN.1 definition of the EXECUTE-DIRECTIVE invocation looks
like:

 

ExecuteDirectiveInvocation          ::=   SEQUENCE

{     standardInvocationHeader      StandardInvocationHeader

,     directiveIdentifier           VisibleString

,     directiveQualifier            CHOICE

      {           octetString       [0] OCTET STRING

      ,           null              [1] NULL

      ,           parameterList     [2] SEQUENCE OF

                  {     name        PublishedName

                  ,     value       TypeAndValue

                  }

      ,           embedded          [3] Embedded

      }

,     extensionParameter            Extended

}

 

 

As Yves and I have been discussing this, there are still some
ambiguities and this will still require more work. However, the draft
SC-CSTS white book does illustrate how the above definition could be
used  for the SC service.

 

Best regards,

John

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