perfsonar development work

[ulisses <>]

Hi all

using the following xml sample as a base [0]:

  <nmwg:metadata id="meta1-in" metadataIdRef="meta4">
    <netutil:subject id="iusub1">
      <nmwgt:interface>
        <nmwgt:direction>out</nmwgt:direction>
      </nmwgt:interface>
    </netutil:subject>
    <nmwg:eventType>utilization</nmwg:eventType>
  </nmwg:metadata>


  <nmwg:metadata id="meta2">
    <select:subject id="iusub2" metadataIdRef="meta1-in"/>

    <select:parameters id="param1">
      <nmwg:parameter name="startTime">1121644800</nmwg:parameter>
      <nmwg:parameter name="endTime">1121904000</nmwg:parameter>
      <nmwg:parameter name="consolidationFunction">AVERAGE</nmwg:parameter>
      <nmwg:parameter name="resolution">300</nmwg:parameter>
    </select:parameters>

    <nmwg:eventType>select</nmwg:eventType>

  </nmwg:metadata>

I see that the select element has a reference to metadata that describes an 
xml document.

In the topology service, it will be interesting for future versions to 
retrieve only a a set of
elements of the topology, for instance the links that have an specified 
capacity.

An example of link element is the follwing:

        <nmwgtopo3:link  
id="localhost.localdomain.-4b42ecf6:10d5e1bdbe3:-6b38" 
xmlns:nmwgtopo3="http://ggf.org/ns/nmwg/topology/l3/3.0/";>
            <nmwgtopo3:interface
                id="localhost.localdomain.-4b42ecf6:10d5e1bdbe3:-6b39" 
interfaceIdRef="51479">
                <nmwgtopo3:ifDescription>FastEthernet0/0.2-ISL vLAN 
subif</nmwgtopo3:ifDescription>
                <nmwgtopo3:type>other</nmwgtopo3:type>
                <nmwgtopo3:capacity>100000000</nmwgtopo3:capacity>
                <nmwgtopo3:ipAddress value="158.38.108.1"/>
            </nmwgtopo3:interface>
            <nmwgtopo3:type>lan</nmwgtopo3:type>
            <nmwgtopo3:name>levanger.levanger-fag</nmwgtopo3:name>
        </nmwgtopo3:link>


And a template of links that have interfaces with a capacity of 155 Mbps 
could be [1]:

     <nmwgtopo3:link>
           <nmwgtopo3:interface>
                      <nmwgtopo3:capacity>155000000</nmwgtopo3:capacity>
           </nmwgtopo3:interface>
    </nmwgtopo3:link>

I don't have clear that I can specify such template inside a <select> 
parameters so I believe
that the correct way to indicate the template is like in the example [0], 
that is referencing a 
metadata that has the template element [1]

A full example could be:

  <nmwg:metadata id="meta1">
    <netutil:subject id="sub1">
     <nmwgtopo3:link>
           <nmwgtopo3:interface>
                      <nmwgtopo3:capacity>155000000</nmwgtopo3:capacity>
           </nmwgtopo3:interface>
    </nmwgtopo3:link>
    </netutil:subject>
  </nmwg:metadata>

  <nmwg:metadata id="meta2">
    <select:subject id="sub2" metadataIdRef="meta1"/>

    <select:parameters id="param1">
      <nmwg:parameter name="Time">0</nmwg:parameter>
    </select:parameters>

    <nmwg:eventType>select</nmwg:eventType>

  </nmwg:metadata>


Am I right?

Thanks so much

        Ulisses