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import time
from math import sin, pi
from random import random
from pyrrd.rrd import RRD, RRA, DS
from pyrrd.graph import DEF, CDEF, VDEF
from pyrrd.graph import LINE, AREA, GPRINT
from pyrrd.graph import ColorAttributes, Graph
exampleNum = 4
filename = 'example%s.rrd' % exampleNum
graphfile = 'example%s.png' % exampleNum
graphfileLg = 'example%s-large.png' % exampleNum
day = 24 * 60 * 60
week = 7 * day
month = day * 30
quarter = month * 3
half = 365 * day / 2
year = 365 * day
endTime = int(round(time.time()))
delta = 13136400
startTime = endTime - delta
step = 300
maxSteps = int((endTime-startTime)/step)
# Let's create and RRD file and dump some data in it
dss = []
ds1 = DS(dsName='speed', dsType='GAUGE', heartbeat=900)
ds2 = DS(dsName='silliness', dsType='GAUGE', heartbeat=900)
ds3 = DS(dsName='insanity', dsType='GAUGE', heartbeat=900)
ds4 = DS(dsName='dementia', dsType='GAUGE', heartbeat=900)
dss.extend([ds1, ds2, ds3, ds4])
rras = []
rra1 = RRA(cf='AVERAGE', xff=0.5, steps=24, rows=1460)
rras.append(rra1)
myRRD = RRD(filename, ds=dss, rra=rras, start=startTime)
myRRD.create()
# let's generate some data...
currentTime = startTime
for i in xrange(maxSteps):
currentTime += step
# lets update the RRD/purge the buffer ever 100 entires
if i % 100 == 0:
myRRD.update(debug=False)
# let's do two different sets of periodic values
value1 = int(sin(i % 200) * 1000)
value2 = int(sin( (i % 2000)/(200*random()) ) * 200)
value3 = int(sin( (i % 4000)/(400*random()) ) * 400)
value4 = int(sin( (i % 6000)/(600*random()) ) * 600)
# when you pass more than one value to update buffer like this,
# they get applied to the DSs in the order that the DSs were
# "defined" or added to the RRD object.
myRRD.bufferValue(currentTime, value1, value2, value3, value4)
# add anything remaining in the buffer
myRRD.update()
# Let's set up the objects that will be added to the graph
def1 = DEF(rrdfile=myRRD.filename, vname='myspeed', dsName=ds1.name)
def2 = DEF(rrdfile=myRRD.filename, vname='mysilliness', dsName=ds2.name)
def3 = DEF(rrdfile=myRRD.filename, vname='myinsanity', dsName=ds3.name)
def4 = DEF(rrdfile=myRRD.filename, vname='mydementia', dsName=ds4.name)
vdef1 = VDEF(vname='myavg', rpn='%s,AVERAGE' % def1.vname)
area1 = AREA(defObj=def1, color='#FFA902', legend='Raw Data 4')
area2 = AREA(defObj=def2, color='#DA7202', legend='Raw Data 3')
area3 = AREA(defObj=def3, color='#BD4902', legend='Raw Data 2')
area4 = AREA(defObj=def4, color='#A32001', legend='Raw Data 1')
line1 = LINE(defObj=vdef1, color='#01FF13', legend='Average', stack=True)
# Let's configure some custom colors for the graph
ca = ColorAttributes()
ca.back = '#333333'
ca.canvas = '#333333'
ca.shadea = '#000000'
ca.shadeb = '#111111'
ca.mgrid = '#CCCCCC'
ca.axis = '#FFFFFF'
ca.frame = '#AAAAAA'
ca.font = '#FFFFFF'
ca.arrow = '#FFFFFF'
# Now that we've got everything set up, let's make a graph
startTime = endTime - 3 * month
g = Graph(graphfile, start=startTime, end=endTime, vertical_label='data', color=ca)
g.data.extend([def1, def2, def3, def4, vdef1, area4, area3, area2, area1])
g.write()
g.filename = graphfileLg
g.width = 800
g.height = 400
g.write()
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