[mythtv-users] MythWeather-Revamp: Is it even partially working?
Douglas Wagner
douglasw0 at gmail.com
Sun May 20 17:39:16 UTC 2007
On 5/20/07, Rich West <Rich.West at wesmo.com> wrote:
>
> Douglas Wagner wrote:
> >
> >
> > On 5/20/07, * Douglas Wagner* <douglasw0 at gmail.com
> > <mailto:douglasw0 at gmail.com>> wrote:
> >
> > OK, so I have quite a bit more information now than I did about 20
> > minutes ago.
> >
> > First the problem with all the scripts failing to load into the
> > active area was due to the fact that the @INC array in perl (I
> > sound like I know what i'm talking about, I don't) didn't include
> > /usr/share/mythtv/mythweather/scripts and thus none of the
> > "special" files..the .pm files, could be found by any of the
> > scripts...the only one that either worked out of the box or didn't
> > need any .pm file was the Severe weather forcast, which is why
> > that worked.
> >
> > To fix, I went into each of the scripts and added:
> >
> > use lib "/usr/share/mythtv/mythweather/scripts";
> >
> > Following this entering mythfrontend and going back into the
> > sources setup worked perfectly...all the scripts were able to be
> > added to the "Active" area.
> >
> > From there I obtained the information below on each scripts
> > execution parameters.
> >
> > The problem right now is that MythTV simply will not store any
> > information in the locations required by the application. Once
> > everything is setup I can see in the frontend log where it tries
> > to run every PL script, and when those PL scripts are run from the
> > command line I can see every one of them return something proper
> > (tho one of them only returns to std out, it does not write to the
> > directories you specify) not a single one of them puts data into a
> > file in the .mythtv/mythweather area when run through Myth.
> >
> > I'm half tempted right now to setup cron jobs for those PL scripts
> > I know produce data. For the ones that don't write files (say the
> > 3 day/6 day forecast script) how do I know what file name MythTV
> > is looking for? I could pipe out the information returned by the
> > script to the proper file if I know what the file names are.
> >
> > Speaking of cron jobs: does mythtv periodically re-run the weather
> > data for the revamp code?
> >
> > --Douglas Wagner
> >
> > Below is information on execution of each PL script (Western
> > Suburb of St. Louis is where this data points to specifically)
> >
> > nwsxml.pl - Current Conditions - **Does not Write to the proper
> > file.**
> > ----------------------
> > /usr/share/mythtv/mythweather/scripts/nwsxml.pl -u ENG -d
> > /home/mythtv/.mythtv/MythWeather/NWS-XML KSUS
> >
> > nws-alert.pl - Severe Weather Alerts - Properly Writes to File
> > from Command Line Execution
> > ----------------------
> > /usr/share/mythtv/mythweather/scripts/nws-alert.pl -u ENG -d
> > /home/mythtv/.mythtv/MythWeather/NWS-Alerts 29183
> >
> > maps.pl - Static Maps - Properly Writes to File from Command Line
> > Execution
> > ----------------------
> > /usr/share/mythtv/mythweather/scripts/maps.pl -u ENG -d
> > /home/mythtv/.mythtv/MythWeather/Map-Download
> > http://image.weather.com/images/maps/current/cur_mw_720x486.jpg
> > <http://image.weather.com/images/maps/current/cur_mw_720x486.jpg>
> >
> > ndfd18.pl - 18 Hour Forecast - Properly Writes to File from
> > Command Line Execution
> > -----------------------
> > /usr/share/mythtv/mythweather/scripts/ndfd18.pl -u ENG -d
> > /home/mythtv/.mythtv/MythWeather/NDFD-18_Hour +38.39,- 090.39
> >
> > animaps.pl - Animated Maps - Properly Writes to File from Command
> > Line Execution
> > -----------------------
> > /usr/share/mythtv/mythweather/scripts/animaps.pl -u ENG -d
> > /home/mythtv/.mythtv/MythWeather/Animated-Map-Download
> > http://images.weather.com/looper/archive/us_mw_4regradar_plus_us
> >
> > ndfd.pl - 3 Day and 6 Day Forecast - Properly Writes to File from
> > Command Line Execution
> > -----------------------
> > /usr/share/mythtv/mythweather/scripts/ndfd.pl -u ENG -d
> > /home/mythtv/.mythtv/MythWeather/NDFD-6_day +38.39,-090.39
> >
> >
> >
> >
> > On 5/19/07, *Robin Gilks* < g8ecj at gilks.org
> > <mailto:g8ecj at gilks.org>> wrote:
> >
> >
> > > Ok, so I tried my hand at getting mythweather-revamp working.
> > >
> > > If you want to see HOW I got what I got read the here's what
> > I did below.
> > >
> > > I've run into several problems. First all but one of the
> > defined
> > > plugins/scripts in the setup area currently return "the
> > plugin doesn't
> > > provide the needed data" or something like that and won't
> > install in the
> > > active plugins area (the only one that does is NWS-Alerts).
> > >
> > > NWS-Alerts does in fact install but when it's run by mythtv
> > it doesn't
> > > generate it's output into the .mythtv/MythWeather/NWS-Alerts
> > > directory...nothing appears in there. If you manually run
> > > NWS-Alerts.plfrom the scripts directory with the output line
> that
> > > MythTV seems to want to
> > > run that WILL create the output file (you have to be outside
> > of myth and
> > > execute it from the command line, myth itself (tho it runs a
> > valid
> > > command)
> > > will not generate the output correctly, only if it's run from
> > the command
> > > line).
> > >
> > > If however you do generate the output file, mythweather will
> > efffectively
> > > display it, if you don't mythweather turns up completely
> blank.
> > >
> > > Also: does anyone have documentation on what the command
> > lines should look
> > > like for each of the scripts? Since I can't get them to run
> > properly
> > > through myth (and most of the scripts are being beaten down
> > my myth when
> > > trying to be moved to the active area) it would be nice to
> > have some
> > > documentation on what each one is looking for so we could try
> > running them
> > > from the local command line.
> > >
> > > --Douglas Wagner
> >
> > For documentation on the command line for the scripts, check
> > the README
> > file in the scripts directory.
> >
> > Note that the maps and animated maps scripts do NOT take a
> > city name as
> > the other scripts do (doh!!). I played about with all sorts of
> > names (with
> > a few grep's thrown in) and found that for here (New Zealand)
> > I had to
> > enter the country name.
> >
> > The *ONLY* files that should be executable in the scripts
> > directory are
> > those that mythweather is going to scan - make sure any files
> > are not
> > executable. My executable files are:
> > animaps.pl
> > maps.pl
> > ndfd.pl
> > ndfd18.pl
> > nws-alert.pl
> > nwsxml.pl
> > weathercomXML.2.pl <http://weathercomXML.2.pl>
> > The ones starting with a 'n' seem to be USA specific.
> >
> > Try the script from Simon Flood on svn ticket #3337 - I'm
> > using v0.2 but I
> > see there is an update (not tried it yet!).
> >
> > I've found that my frontend box wasn't doing a DNS lookup
> > correctly (adsl
> > modem dns proxy got lost again) which caused a blank screen -
> > guess I'll
> > have to adjust the timeouts in the setup or remember to reset
> > the modem
> > more often.
> >
> > --
> > Robin Gilks
> >
> > Ok, that would make some sense I guess. I am getting "current
> > conditions" even though current conditions doesn't write anything
> > out. However if I don't forceably cache stuff to disk with cron like
> > i'm doing, myth crashes out with a floating point error or a devide by
> > zero error or something of that nature...so for the moment myth
> > weather on my system seems to work with a cron job pulling the data
> > every hour.
> >
> > So basically, everything right now is working except 3 day and 6 day
> > forecast. The job returns data and it gets written to the cached
> > area, and it looks like good data, so I know the job is working. In
> > MythWeather, The alerts come up (first page i've set), then the
> > current conditions come up (Second page I've set), but current
> > conditions sits there for quite some time (The 3day and 6day are the
> > next 2 pages and do not come up), then the static weather map comes up
> > (the 5th page) then finally the animated map as the last page...so
> > it's like it's trying to process the 3 and 6 day forecast, but simply
> > can't.
> >
> > Are there any debug options I can set to get better information on why
> > Myth is unable to parse or display the 3 / 6 day forecast?
>
> For one, before folks start really complaining, please don't top-post.
> (See:
> http://www.mythtv.org/wiki/index.php/Mailing_List_etiquette#Bottom_post
> as to why).
>
> Anyhow, the only way to debug mythweather-revamp, or any plugin for that
> matter, is to run mythfrontend -v all and observe the output. I've
> found it best to run:
> mythfrontend -v all > /tmp/mythfrontend.log 2>&1
> When I need to see what is going on. Don't run it this way all of the
> time.. you'll fill up /tmp. :)
>
> If you want to run each of the NWS scripts, you need to know your
> station_id (as found in NWS-Stations.xml) and provide that on the
> command line.
>
> For example, if you are located in Alaska near Kake Airport (I'm just
> pulling the first entry from the file), your station_id would be PAFE.
> Using that station_id, you can now run the scripts:
> ./ndfd.pl -u ENG PAFE
> ./ndfd18.pl -u ENG PAFE
> ./animaps.pl -u ENG PAFE
>
> Or, if you use the weathercomXML.pl script that I have been using (which
> someone submitted a while back as a patch), you don't have to worry
> about the station_id stuff from the NWS:
> ./weathercomXML.pl -u ENG <zip code or city, state or ACCID code>
> The ACCID code is the entry found in the "accid.dat" file that came with
> the old mythweather.
>
> -Rich
>
>
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>
Apologies for the top posting, I use Google Mail and since it thread tracks
all the incomming messages, it actually makes more sense for google mail
users to top post than bottom post...never even occured to me the problem
with that. I'll be more careful in the future. :)
The weather.com script I can't seem to get recognized through Myth.
Well, to be exact, myth says it recognizes/found the script. It's not
complaining about any problems in the running of them, but I never see an
execution line for the weathercomXML.pl script either.
When run from the command line it returns data, but I can't seem to get myth
to actually use anything it returns. I also can't understand how the return
data from the weathercomXML.pl script actually gets populated into the
weather-ui.xml mapping...I get that the other weather scripts are working
because myth is reading the cache files from disk, and I understand that
it's SUPPOSED to be taking the print to STD Out and working with it, but as
I state above and below, I don't think my install is handling the streamed
data. This is probably something very basic with my installation. As I
state above, i'm having to use a cron job to execute the various scripts to
get myth weather data down into the archive files so that mythweather will
even read anything.
An example of the problem: Lets say I add a new animated map. Go into the
new settings add a map, set the location, exit settings and save, go to
mythweather and all of myth dies on me with a Floating Point Exception. If
I check the cache on disk the map doesn't exist. However, if I find in
myth's output the attempt to execute the map retrieval, and yes it has both
executed the retrieval of the new map and says it finished, and run that PL
script again from the command line, viola, everything is fine in mythweather
and the map comes up.
As I said there's something very basically wrong in my installation
somewhere i'm guessing since I assume you and everyone else running
mythweather-revamp are getting your data filled in without having to setup
cron jobs.
I also assume your 3/6 day forcast data is being properly displayed...which
mine simply is not...the page for 18 hour, 3 day and 6 day won't even come
up (not that it comes up blank or errors, the system hangs on the prior
pages and then displays the next page after the 18/3/6 pages).
So, i'll take your advice and run frontend through verbose logging and see
what I come up with. More later.
--Douglas Wagner
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