perfsonar development work

[Roman Lapacz <>]

Jason Zurawski wrote:
> Maciej;
>
>
> > Thank you for fast respond and redirecting my email (BTW should I also
> > be signed to developer's mailing list to get the respond and
> > participate in the discussion?)
>
>
> Your messages will be moderated, so signing up is not required (you 
> may do so if you wish).
>
>
> > We need the general answer like: Can PerfSonar initiate SOAP Requests
> > to other Web Services, if so how ?
> > not necessarily to other PerfSonar Services, but also to third party
> > Web Services ? so is  there a way to invoke other Web Service apart
> > from the UI ?
>
>
> I may be missing your question here, but initiating a WS request is 
> not a function that solely exists in perfSONAR, many languages support 
> this.  There are perfSONAR specific client libraries that exist to 
> send messages, but it may be better to start using standard SOAP 
> implementations instead (especially when talking about making requests 
> to other WSs that do not speak the perfSONAR protocol).

As Jason mentioned, perfSONAR web services do not use type mapping but 
simple sending SOAP messages (text) over HTTP. If you want to test some 
already running service you can send Echo request (or any other pS 
request) using command line tool cURL (http://curl.haxx.se/). This tool 
takes a request from text file and sends it to a service. This approach 
could be very useful for someone who is not yet familiar with pS client 
apps.


example use:

 curl --stderr /dev/null -H "SOAPAction: none" --data @soap-message.xml 
$SERVICE_URL > $RESPONSE_FILE


Roman



> In general the perfSONAR services do not have the ability to make an 
> arbitrary request on behalf of someone else, they function as a 
> standalone piece of software that offers a set service (such as 
> delivering some form of measurement data, or answering a discovery 
> query).  Hope this helps;
>
> -jason
>
>
> > 2008/8/11 Jason Zurawski 
> > <>:
> > > Maciej;
> > >
> > >
> > > > We are developing the Mediator which is between two PerfSonars
> > > > "infrastructures" and user.
> > > >
> > > > The infrastructures are established in our lab. We need some
> > > > informations about the queries.We will need PerfSonar to call the
> > > > mediator, then mediator will ask the query to the other PerfSonar to
> > > > get reply and send back to the first perfsonar.
> > > >
> > > > My question is how to create Web Service Request from PerfSonar? and
> > > > how to invoke PerfSonar Services via Web Services ?
> > > >
> > > > I have searched  the website and I couldn't find any helpful 
> > > > information.
> > > > Any help will be appreciate.
> > > >
> > > >
> > > > Kind Regards,
> > > > Maciej Matachowski
> > > >
> > > > P.S. I couldn't find the Developer's mailing list so I don't know if
> > > > this mailing list it a correct one. If not, please redirect my email.
> > >
> > >
> > >  is the developers mailing list (moving the
> > > discussion there).
> > >
> > > First a question: which perfSONAR Services are you dealing with 
> > > specifically
> > > (RRD MA, LS)?
> > >
> > > What you are using will change what the answer regarding what types of
> > > messages to be sent.  The messages in general are sent using SOAP 
> > > over HTTP,
> > > and the foramt is similar to these messages (using the RRD MA as an
> > > example):
> > >
> > > http://anonsvn.internet2.edu/svn/perfsonar/trunk/geant2-java-rrd-ma/samples/requests/ 
> > >
> > >
> > > The LS, SQL MA, Telnet MP, etc. messages would be slightly different in
> > > nature (the respective service authors can point you to examples 
> > > once we
> > > know what you need), but the idea will be the same.
> > >
> > > Let us know some more info, and we should be able to get you further 
> > > in your
> > > project.

<?xml version='1.0' encoding='utf-8'?>
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    xmlns:soapenv='http://schemas.xmlsoap.org/soap/envelope/'
    xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/'>
  <soapenv:Body
      soapenv:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'>
    <nmwg:message type='MetadataKeyRequest'
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                  xmlns:nmwg='http://ggf.org/ns/nmwg/base/2.0/'
                  xmlns:netutil='http://ggf.org/ns/nmwg/characteristic/utilization/2.0/'
                  xmlns:nmwgt="http://ggf.org/ns/nmwg/topology/2.0/";>
      <nmwg:metadata id="meta">
        <netutil:subject id="subj1">
          <nmwgt:interface>
          </nmwgt:interface>
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        <nmwg:eventType>http://ggf.org/ns/nmwg/characteristic/utilization/2.0</nmwg:eventType>
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      <nmwg:data id='data' metadataIdRef='meta'/>
    </nmwg:message>
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</soapenv:Envelope>