perfsonar development work

[Maciej Glowiak <>]

Verena Venus wrote:
> Am Freitag, 29. Februar 2008 16:17:47 schrieb Jason Zurawski:
> > All;
> >
> > This builds upon: https://bugzilla.perfsonar.net/show_bug.cgi?id=331 But
> > I have not seen the issue brought to the entire list yet.
> >
> > In testing messages to services with the wrong MessageType
> > ('MetadataKeyRequest' is correct, 'MDKeyRequest' is not for example) the
> > service must respond with something.  I propose that in the event that a
> > service does not understand the initial Request it responds with a set
> > Message response.  Currently perfSONAR_PS services will respond with
> > 'response', although it has been suggested that 'perfSONARResponse',
> > 'ExceptionResponse' or 'Response' be used instead.
> >
> > Since this will effect many services in the upcoming releases I suggest
> > we implement something quickly so testing can proceed.
> >
> > Does anyone have any strong opinions?
>
> At the moment our service responds with MessageType "ErrorReturn" and adds a 
> result code "error.common.action_not_supported" with description "Unknown 
> MessageType: $messagetype".
>
> We use "ErrorResponse" in all cases where the parsing of the message content 
> (all below the message tag) is  not done to whatever reason.
>
> My opinion to this is:
> The messagetype can be set to two different modes: 
> 1. the proper response type to the request (which btw should be defined 
> somewhere)
> 2. something else because 1. was not possible
>
> In the second case, obviously something utterly wrong happend so this should 
> be indicated by a meaningful name. Just "Response" is not enough if you ask 
> me. I'm not sure if "perfSONARResponse" is right. There might be 
> implementations which use the schemata without perfSONAR, but I'm not sure 
> about this. In any case, I don't see the benefit of naming 
> it "perfSONARResponse". But someone might have good arguments, so please feel 
> free to convince me.
>
> My favorites are:
>
> "ExceptionResponse" or "ErrorResponse" or somehting along those lines 
>
> Just my two cents,
> Verena

Hi, I agree. I like "ErrorResponse" but will accept any other good name.

Another question - for Release Team is whether we should implement it 
for java services of pS 3.0?

The change won't be complicated, but all developers of Java services 
will need to upgrade ps-base to the newest version supporting this type.

I can do the change very quickly.

Maciej

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| Maciej Glowiak        Network Research and Development            ||
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     Poznan Supercomputing and Networking Center ||
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