[CONDUIT #ZRX-794011]: 20150728: help with regex patterns help

Hi Donna,

Sorry for the slow reply, things have been quite hectic around
Unidata given the number of things going on at the same time
(workshop, me writing a GOES-R proposal, the addition of 0.25 degree
GFS to CONDUIT, and a number of other things).

re:
> With the announcement that the gfs 0p25 data will be added to the
> CONDUIT feed tomorrow, I would like to know how to change our CONDUIT
> request to not allow .*pgrb2.0p25.* files while still allowing all other
> CONDUIT products. This is to be a temporary measure (until next week).

We included the URL for a page that has some REQUEST examples in 
the CONDUIT announcement blog post.  Here it is again:

http://www.unidata.ucar.edu/blogs/news/entry/gfs-0-25-176-model

re:
> My initial reaction was to change:
> 
> request                CONDUIT "([09]$)" idd.unidata.ucar.edu
> request                CONDUIT "([18]$)" idd.unidata.ucar.edu
> request                CONDUIT "([27]$)" idd.unidata.ucar.edu
> request                CONDUIT "([36]$)" idd.unidata.ucar.edu
> request                CONDUIT "([45]$)" idd.unidata.ucar.edu
> 
> to
> 
> request         CONDUIT "([^pgrb2.0p25].*[09]$)" idd.unidata.ucar.edu
> request         CONDUIT "([^pgrb2.0p25].*[18]$)" idd.unidata.ucar.edu
> request         CONDUIT "([^pgrb2.0p25].*[27]$)" idd.unidata.ucar.edu
> request         CONDUIT "([^pgrb2.0p25].*[36]$)" idd.unidata.ucar.edu
> request         CONDUIT "([^pgrb2.0p25].*[45]$)" idd.unidata.ucar.edu

The bracket syntax ('[]') in a regular expression means a list
of characters.  [^pgrb2.0p25] is interpreted as "not p or g or r or b, etc."

re:
> But when I test different product names with the new regex, sometimes it
> fails when I want it to succeed and succeed when I want it to fail. If
> this regex isn't going to do what I want it to do, I suppose I will give
> up on the idea.
> 
> Am I doing this wrong?
> 
> [ldm@ldm-relay0 ~]$ regex -s 'data2/TIGGE/gep14.t12z.pgrb2cf12
> !grib2/ncep/GEFS/#000/201507271200F012/PVOR/320 K THTA! 000018'
> "[^pgrb2.0p25].*[28]$"
> 
> match
> 
> [ldm@ldm-relay0 ~]$ regex -s 'data/nccf/com/gfs/prod/gfs.2015072712
> <tel:2015072712>/gfs.t12z.pgrb2.0p50.f348
> !grib2/ncep/GFS/#000/201507271200F348/VREL/400 hPa PRES! 000098'
> "[^pgrb2.0p25].*[28]$"
> 
> match
> 
> [ldm@ldm-relay0 ~]$ regex -s 'data/nccf/com/gfs/prod/gfs.2015072712
> <tel:2015072712>/gfs.t12z.pgrb2.0p25.f348
> !grib2/ncep/GFS/#000/201507271200F348/VREL/400 hPa PRES! 000098'
> "[^pgrb2.0p25].*[28]$"
> 
> match

Please check the example for sites that do not want to receive
the 0.25 degree GFS in:

http://www.unidata.ucar.edu/blogs/news/entry/gfs-0-25-176-model

If you still have problems, we can login to your machines and
take a look.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: ZRX-794011
Department: Support CONDUIT
Priority: Normal
Status: Closed