def createimages(self, currentTime=None):
if currentTime is None:
currentTime = int(time.time())
if os.path.isfile(self.rrdfile):
myRRD = rrd.RRD(self.rrdfile, mode='r')
def1 = DEF(rrdfile=myRRD.filename, vname='Watt', dsName='power')
def2 = DEF(rrdfile=myRRD.filename, vname='Wh', dsName='energy')
vdef1 = VDEF(vname='maxpower', rpn='%s,MAXIMUM' % def1.vname)
vdef2 = VDEF(vname='avgpower', rpn='%s,AVERAGE' % def1.vname)
vdef3 = VDEF(vname='maxenergy', rpn='%s,MAXIMUM' % def2.vname)
cdef1 = CDEF(vname='Joule', rpn='%s,3600,*' % def2.vname)
area1 = AREA(defObj=def1, color='#006600', legend='Our Power')
area2 = AREA(defObj=cdef1, color='#006600', legend='Our Energy')
line1 = LINE(defObj=vdef1, color='#660000', legend='Our Maximum')
line2 = LINE(defObj=vdef2, color='#009900', legend='Our Average')
gprint1 = GPRINT(vdef2,'average power %6.0lf watt')
gprint2 = GPRINT(vdef1,'maximum power %6.0lf watt')
# setup the labels and definitions also setup
# the different file sizes
labels = ['power\ in\ Watt','energy\ in\ Joule']
definitions = [
[def1, vdef1, vdef2, area1, gprint1, gprint2, line1, line2],
[def2,cdef1, area2]]
#setup a dummpy image
g = Graph('dummpy.png', end=currentTime, color=self.colors,
imgformat='png')
for num in range(0, len(labels)):
g.vertical_label = labels[num]
g.data = definitions[num]
for t in self.times:
g.start = (currentTime - (t[0] * 60))
for size in self.sizes:
g.width = size[0][0]
g.height = size[0][1]
g.filename = self.graphfile+'_%s_%s_%s.png' % (
labels[num].split('\ ',1)[0],
t[1], size[1] )
g.write(debug=False)
