perfSONAR User Q&A and Other Discussion

[Maciej Glowiak <>]

Vlada Macek wrote:
> Hi,
>
> during the testing of the new LS client against
> http://loco4.man.poznan.pl:8090/axis/services/LookupService, we've found
> the responses deviate somehow from the specifications on
> wiki.perfsonar.net. Can that mean the LS is old version? I think the
> responses are vague. When the items below get corrected, the responses
> will be better parsable:
>
>    1. Returned the result codes in the form 'result.success' instead of
>       'success.ls.register' for registration operation. Should I fix the
>       client to accept this answer for success? I consider it unclean
>       solution.
>
>    2. 'id' attribute in response's data and metadata get strange "_0"
>       suffix, for example 'resultCodeMetadata_0'. I think unified
>       'resultCodeMetadata' and 'resultCodeData' ids would be great for
>       parsing and I vote for them to be labeled required on the page
>       http://wiki.perfsonar.net/jra1-wiki/index.php/LS_Messages.
>
>    3. Response <nmwg:message> root element does not hold the required
>       'metadataIdRef' attribute referencing the 'id' of the request.
>
>
> My client parses the registration response using this xpath expression,
> which I consider good:
>
> /nmwg:message[@type="LSRegisterResponse"
>  and
> metadataIdRef="ls_client_request"]/nmwg:metadata[@id="resultCodeMetadata"]/nmwg:eventType
>
> The items 2. and 3. above both keep the expression from finding the
> correct <eventType> and item 1. means the string success.ls.register
> cannot be successfully matched to indicate success.

Yes, the LS is quite an old version. I don't know exactly what version 
it is, but most of these things were reported as bugs and corrected. For 
sure 1) and 2). I don't remember if 3) as well, but I'll check it.

So probably loco4 LS is not a good choice. I think after releasing next 
perfSONAR suite we'll be installing the newest version. Until that time 
you should use 1.1RC2 just to avoid inconsistency between functionalities.

Maciej


--

 --------------------------------------------------------------------
| Maciej Glowiak        Network Research and Development            ||
| 

     Poznan Supercomputing and Networking Center ||
| (+48 61) 858 2024          -- skype_id: maciej_psnc   GG: 4526858 ||
 ====================================================================