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#!/usr/bin/python
import colorgen
import rrdtool
import time
import onewire
import sys
dir_prefix = '/home/nihilus/envmon/'
datasets = sorted([ (sensor, 'onewire-temp-%s.rrd' % sensor) for sensor in onewire.sensors() ], key = lambda x:x[0])
datasets += [ ('Outside', 'env-outside.rrd') ]
def graph(name, duration):
print >>sys.stderr, "Graphing %s" % name
end_struct = time.localtime(time.time() - 450)
end = time.mktime(end_struct) - end_struct.tm_sec - 60 * (end_struct.tm_min % 5)
prefix = [
name,
'-E',
'--end', '%d' % end,
'--start', 'end-%ds' % duration,
'--width', '800',
'--height', '300'
]
body = []
cg = colorgen.ColorGen()
for dataset_name, dataset_rrd in datasets:
body.append('DEF:temperature-%(name)s=%(filename)s:temperature:AVERAGE:start=end-%(duration)d' % {
'name': dataset_name,
'filename': dir_prefix + dataset_rrd,
'duration': duration + 3600
})
color = cg.get_next()
color = (int(color[0] * 255), int(color[1] * 255), int(color[2] * 255))
body.append('LINE2:temperature-%(name)s#%(r)02x%(g)02x%(b)02x:%(name)s' % {
'name': dataset_name,
'r': color[0],
'g': color[1],
'b': color[2]
})
rrdtool.graph(prefix + body)
print >>sys.stderr, "Done with %s" % name
graph('env-day.png', 86400)
graph('env-week.png', 604800)
graph('env-month.png', 2592000)
graph('env-year.png', 31557600)
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