perfsonar development work

["Vedrin Jeliazkov" <>]

Hi Maxim, Sven,

Error code support has been implemented a few months ago in Java RRD MA and
Java LS, but is not included in the official perfSONAR-1.0 release. Basically,
you'll have to wait for the next release of the services or use a recent SVN
snapshot.

Meanwhile, Sven's problem can be debugged through Axis fault strings and
actualy this is what I've done while running perfsonarUI in debug mode:

AxisFault
 faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
 faultSubcode:
 faultString: org.perfsonar.service.commons.exceptions.SystemException:
[unknown]: RRDStorageManager.rrdFetch: Cannot connect with rrdjtool native
library: no jrrd in java.library.path
 faultActor:
 faultNode:
 faultDetail:
        {http://xml.apache.org/axis/}hostname:perfmonc


Kind regards,
Vedrin

PS: Please note that I haven't been involved in development of Java RRD MA,
neither in the internal discussion about what should be included in the first
official release.

maxim 
<>
 wrote:

> Hi Vedrin,
> May I suggest that it should not be an empty response at all.
> If something is missing then it should be exception catched and reported
> through
> the faultstring  and if it’s the case where there is no data indeed 
> in the database then it should be again fault with "no data" faultstring.
> Any client API should be able to deal with that (catch and ignore "no data"
> with mild warning
> and full debug info in debugging mode). It will help enormously to catch 
> any problems on the server side.
>  Thanks,
>          Maxim Grigoriev.
>  
> 
> > -----Original Message-----
> > From: Vedrin Jeliazkov 
> > [mailto:]
> >  
> > Sent: Tuesday, September 26, 2006 9:32 AM
> > To: Sven Ubik
> > Cc: 
> > 
> > Subject: [pS-dev] Re: [I2G2-Proto] Empty response from RRD MA
> > 
> > Hi Sven,
> > 
> > Sven Ubik 
> > <>
> >  wrote:
> > 
> > > Hi,
> > > 
> > > I am getting empty response from our RRD MA, while rrdtool 
> > fetch with 
> > > the same parameters produces valid data. Does anybody have any 
> > > suggestion where can be the problem?
> > > 
> > > RRD MA configuration, request and response files are in attachments.
> > > 
> > > rrdtool fetch returns the following:
> > > 
> > > # rrdtool fetch /usr/local/snmp_mp/cesnet_gn2.rrd AVERAGE -r 60 -s 
> > > 1159254960 -e 1159255080
> > >                        bytes_in           bytes_out
> > > 
> > > 1159255020: 9.4378377833e+06 8.5923076833e+06
> > > 1159255080: 1.1388552250e+07 1.0209844850e+07
> > > 1159255140: 1.1294331500e+07 9.4089445833e+06
> > > 
> > > Regards,
> > > 
> > > Sven Ubik
> > 
> > This sounds like a linker problem. Java RRD MA uses JNI 
> > (native) library for accessing RRDs. The library must exist 
> > and ld should know where to find it.
> > So, please ensure that the files libjrrd.so and rrdjtool.jar 
> > exist in the $PERFSONAR/contrib/rrdjtool/build folder AND 
> > this location is known to ld (either by setting and exporting 
> > LD_LIBRARY_PATH or by adding a corresponding line in ld.so.conf).
> > 
> > If you're going to use LD_LIBRARY_PATH, don't forget to 
> > re-initialize it on each reboot. Some people have reported 
> > problems with LD_LIBRARY_PATH being unexpectedly changed on 
> > some Linux flavours, so probably it's better to edit ld.so.conf
> > 
> > Best regards,
> > Vedrin
> > 
> > 
> > 
> > 
> > 
> 
> 
>