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[LDM #ICO-204104]: Filing products with non-unique ldm metadata



Robert,

The product-identifier of an LDM data-product is supposed to uniquely identify 
the
product. Are you saying this is *not* the case for the products in question? If
so, what kind of products are they and where do they come from?

I can't decode the "XOUS5." T1T2A1A2ii identifier using the WMO 386 tables at
<http://www.nws.noaa.gov/tg/headef.php>.

Can you work with the data-product provider to fix the product-identifier?

String-substitution in the output file name based on the creation-time of a
data-product uses the function strftime(3). That function doesn't
do fractional seconds. Adding that ability would require modifying the code.

Theoretically, one could PIPE data-products to a script using the "-close"
option that would create a unique time-based output file name for the data-
product. I'm not sure, however, that that solution could keep-up with multiple
arrivals per second. It would depend on the actual rate and the speed of the
computer.

I hope this helps.

> I'm trying to file products from ldm where the LDM metadata is not unique
> enough to guarantee a unique file name and products come in quite often in
> sub-second intervals.  I'd like to be able to name them with a base file
> name plus time, down to the millisecond in pqact.  Is this possible?  I'm
> looking at the reference docs here
> https://www.unidata.ucar.edu/software/ldm/ldm-current/basics/pqact.conf.html 
> on
> "Replacement Strings Derived from the Data-Product Creation-Time" and it
> appears to only go down to the second?  Do you recommend another way to go
> about this?
> 
> HDS     (XOUS5.) (KWBC) (......) /p(...)(...)
> FILE    -strip
> /data/ldm/newproducts/cap/HDS.\1.\2.\3.XML.CAP-PRODUCT.\4.\5..%d%H%M%S
> 
> Thanks for any feedback you can provide.
> 
> 
> --
> Rob Sallee
> Software Engineer, Contractor (Ace Info Solutions, Inc.)
> National Weather Service
> National Centers for Environmental Prediction
> Central Operations, Infrastructure and Web Services Branch
> http://weather.gov/
> 
> 

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: ICO-204104
Department: Support LDM
Priority: Normal
Status: Closed
===================
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