Bug#897081: wmfrog: Does not update weather regularly

[Jeremy Sowden]

On 2019-09-29, at 14:49:40 +0100, Jeremy Sowden wrote:
> On 2019-09-29, at 14:35:05 +0100, Jeremy Sowden wrote:
> > On Sat, 28 Apr 2018, at 07:40:39 +0300, Yavor Doganov wrote:
> > > The file LBWN_dat gets updated every 5 minutes (as expected) but
> > > LBWN was updated only once and it seems the app is getting the
> > > data from there.  FWIW, the wmweather package is working properly
> > > with the same station (updating every 30 minutes).
> >
> > Wmfrog downloads the raw observations and attempts to decode them.
> > It only updates LBWN if it does so succesfully.  Wmweather, on the
> > other hand, downloads the already decoded observations, which are
> > also available.  My guess is that wmfrog's decoder can't parse the
> > raw observations under certain circumstances.  I'll do some
> > debugging and see if I can reproduce the problem.
>
> That didn't take long.
>
> The current raw observations for LBWN are:
>
>   2019/09/29 13:30
>   LBWN 291330Z 10011KT CAVOK 25/13 Q1013 NOSIG
>
> wmfrog complains about invalid data and doesn't save them.

Debian includes a Perl module, Geo::METAR, that can parse METAR
observations.  I will add a patch to update wmfrog to use it.

J.
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