[Nsi-wg] Overly complex discovery WSDL
Henrik Thostrup Jensen
htj at nordu.net
Tue Nov 27 04:50:52 EST 2012
Hi
I've been looking at the discovery WSDL, and was a bit amazed with how
complicated it turned up being. Now I have not been very active in NSI for
the last couple of months, and have missed a couple of meeting, but I
think we've ended up with something a lot more complex than what we
discussed in Oxford and the mailing lists.
For the request it looks like this:
queryNsaRequest :: QueryNsaRequestType
queryNsaRequest :: RequestType
filter :: FilterType *
nsaId :: NsaIdType *
serviceType :: xsd:string *
This is my own notation. Sorry if it is tricky to read. For the request it
possibly to define summary of detailed request, but I haven't found any
documentation on what should be returned for what. Secondly it is possible
to have multiple filters, each specifying multiple nsaIds and
serviceTypes. The parameters for each filter should be ORed, however there
does not appear to be any documentation for how to deal with multiple
filters. It also appears to be complete and utterly overkill as most NSAs
will host 2 or 3 services.
Now, for the response:
queryNsaResponse :: QueryNsaResponseType
discovery :: NsaDiscoveryType *
# nsaId
# softwareVersion
# startTime
# currentTime
services :: ServicesType *
service :: ServiceType
#other :: any
description :: xsd:string
versions :: VersionsType *
version :: VersionType
# name
# version
# endpoint
# wsdl
# url
# other :: any
other :: any *
capabilities :: CapabilitiesType *
capability ft:TypeValuePairType
# type :: xsd:string !
# targetNamespace :: xsd:anyURI
value :: xsd:string *
other :: any *
Here we are dealing with a datastructure potentially 9 levels deep.
Arguably, some of this is due to the ackward way XML/WSDL handles lists,
but there are still 4 levels of nested lists. I won't go into any details
here.
I am not trying to do a witch-hunt on John here. In fact he may just have
been listening to everyone, but what we ended up with here is pretty bad,
and is in my opion very far from what we discussed in Oxford. I think we
need to setup some review of WSDLs as well in order to ensure that these
things do not spin out of control like this.
Anyways, something to talk about tomorrow :-).
Best regards, Henrik
Henrik Thostrup Jensen <htj at nordu.net>
Software Developer, NORDUnet
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