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contrib-munin/plugins/weather/weather_press_

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#!/usr/bin/env python
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"""
munin US NOAA weather plugin (http://tgftp.nws.noaa.gov)
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Draws pressure in hPa.
Copy/link file as 'weather_pressure_CODE', like: weather_pressure_LOWW for Austria, Vienna.
Get the code by going to http://tgftp.nws.noaa.gov, selecting your
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location, and copying the code from the address bar of your browser; should
be something like CODE.html.
Linux users might need to adjust the shebang.
"""
import sys
import urllib
import re
url = 'http://tgftp.nws.noaa.gov/data/observations/metar/decoded/%s.TXT'
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re_hPa = re.compile('Pressure.*\((\d+) hPa\)')
code = sys.argv[0][(sys.argv[0].rfind('_')+1):]
if code == None: sys.exit(1)
if len(sys.argv) == 2 and sys.argv[1] == "autoconf":
print "yes"
elif len(sys.argv) == 2 and sys.argv[1] == "config":
print 'graph_title Atmospheric pressure at code %s' % code
print 'graph_vlabel Pressure in hPa'
print 'graph_category sensors'
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print 'pressure.label Pressure'
print 'pressure.type GAUGE'
print 'graph_args --base 1000 -l 850 -u 1050 --rigid'
print 'graph_scale no'
else:
u = urllib.urlopen(url % code)
txt = u.read()
u.close()
hPa = re_hPa.findall(txt)[0]
print 'pressure.value %s' % hPa