Re: IOSP error

[John Caron <caron@xxxxxxxxxxxxxxxx>]

Needham, Sheila wrote:
> Hi John,
>
> I've finally got as far as testing my IOSP in THREDDS and I'm getting
> this error:
>
> ucar.atd.dorade.DoradeSweep$DoradeSweepException: java.io.IOException
>         at ucar.atd.dorade.DoradeSweep.isDoradeSweep(DoradeSweep.java:510)
>         at
> ucar.nc2.iosp.dorade.Doradeheader.isValidFile(Doradeheader.java:48)
>         at ucar.nc2.iosp.dorade.Doradeiosp.isValidFile(Doradeiosp.java:59)
>         at ucar.nc2.NetcdfFile.open(NetcdfFile.java:441)
>         at ucar.nc2.NetcdfFile.open(NetcdfFile.java:261)
>         at ucar.nc2.NetcdfFile.open(NetcdfFile.java:231)
>         at ucar.nc2.NetcdfFile.open(NetcdfFile.java:219)
>         at ucar.nc2.NetcdfFile.open(NetcdfFile.java:207)
>         at test.TestNetcdf.main(TestNetcdf.java:30)
> Caused by: java.io.IOException
>         at ucar.atd.dorade.DoradeSweep.findName(DoradeSweep.java:528)
>         at ucar.atd.dorade.DoradeSweep.isDoradeSweep(DoradeSweep.java:507)
>         ... 8 more
>
> It carries on to find my IOSP and completes successfully.  Can I change
> the order in which IOSPs are tested or disable the ones I know we're not
> going to use?

Hi Sheila:

I think the easiest thing is for us to fix the dorade iosp, which is mistakenly
claiming your file. Can you send me a sample file?

Also, if you are loading your IOSP at runtime, it should be coming first,
before the statndara IOSPs. If not, I will fix that also.

> ---
> On a separate note, have you any thoughts on how to convert data to
> different output formats from the TDS?  For example, we might store data
> as NetCDF but want to retrieve it as GRIB1.  I was thinking along the
> lines of an input service provider sitting between the stored data and
> the CDM (as we've got now), and an output service provider between the
> CDM and the client - but I'm not sure how this would fit with the TDS.

The problem is that GRIB output is only suitable for gridded data. So writing a
generic CDM -> GRIB output service is not possible. However, if you write a
gridded data -> GRIB service, we could define a "GRIB output service" which one
could configure into the TDS for specific datasets.

> We want to move away from the current situation where we have dozens of
> data formats and specific converters for each pair!

Yes, thats the hope!

> Thanks,
> Sheila
>
>
> ============================================
> Sheila Needham  Senior Software Developer
> Infrastructure Development Team   Technology
> *Met Office*  Fitzroy Road Exeter EX1 3PB United Kingdom
> Tel: +44 (0)1626 363489
> E-mail: sheila.needham@xxxxxxxxxxxxxxxx
> _http://www.metoffice.gov.uk_
> ============================================