RRDtool sample program 1

graph1.py

import calendar
import datetime
import random
import rrdtool
import time

from rrdtool import update as rrd_update

current_time = 0
start = 0
filename = None

def __init__(self):

    self.filename = "data1.rrd"

    #current_time = calendar.timegm(time.gmtime())
    #current_time = time.time()
    self.current_time = datetime.datetime.now()

    one_week_ago = datetime.timedelta(weeks=1)
    diff = current_time - one_week_ago
    self.start = int(time.mktime(diff.timetuple()))

    self.current_time = int(time.mktime(current_time.timetuple()))

    print "current_time", self.current_time
    print "start", self.start

def get_metrics(self):
    return random.randint(1,10);

def do_work(self):

    print "current_time", self.current_time
    print "start", self.start

    filename = "data1.rrd"

    ret = rrdtool.create(filename, "--step", "300", "--start", str(self.start-300),
        "DS:metric1:GAUGE:900:U:U",
        "RRA:AVERAGE:0.5:1:2000",
        "RRA:MAX:0.5:1:2000",
        "RRA:LAST:0.5:1:2000" )
    count = 0
    t = self.start
    while t < self.current_time:
        metric = get_metrics()
        print count, t, self.current_time, metric
        ret = rrd_update(filename, '%d:%s' % (t, metric) )
        t += 300
        count += 1

    print self.start, t


if __name__ == '__main__':

    init()
    do_work()