perfsonar development work

[Maciej Glowiak <>]

Hi again, let me correct one mistake (in two places):

> The solution with _number has been used for more than 2 months.
>
> 1. As you remember, we didn't have generic Message Handler, so everybody 
> wrote his own MH. I had to write one for Lookup Service and tried to 
> make it quite generic. Then Roman used it for his MAs, but of course 
> everybody may use his own MH for his own service.
>
> 2. Your case with one common metadata:
>
>    --------------------------------------------------
>    <message>
>
>       <metadata id="a"/>
>       <metadata id="b" metadataIdRef="a"/>


>       <metadata id="c" metadataIdRef="c"/>
====>   <metadata id="c" metadataIdRef="a"/>



>       <data metadataIdRef="b"/>
>       <data metadataIdRef="c"/>
>
>    </message>
>    --------------------------------------------------
>
>    must be split for two sub-requests if we want to run Service Engine
>    separate for each data trigger. That's work for both MAs now and for
>    LS (except LSRegister which has its own simple Message Handler)
>
> 3. Service output is not divided into pieces, so request message from
>    pt.2 will cause running Service Engine two times:
>
>    a) request to SE
>    --------------------------------------------------
>    <message>
>       <metadata id="a"/>
>       <metadata id="b" metadataIdRef="a"/>
>       <data metadataIdRef="b"/>
>    </message>
>    --------------------------------------------------
>
>    b) request to SE
>    --------------------------------------------------
>    <message>
>       <metadata id="a"/>



>       <metadata id="c" metadataIdRef="c"/>
====>   <metadata id="c" metadataIdRef="a"/>






--

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| Maciej Glowiak        Network Research and Development            ||
| 

     Poznan Supercomputing and Networking Center ||
| (+48 61) 858 2024     http://monstera.man.poznan.pl/              ||
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