#!/usr/bin/python
#coding=utf8
"""
# Author: songtianlun
# Created Time : 2022-06-07 10:50:09

# File Name: first.py
# Description:

"""
# import sys
# sys.path.append('/path/to/rrdtool/lib/python2.6/site-packages/')
import rrdtool, tempfile

DAY = 86400
YEAR = 365 * DAY
fd,path = tempfile.mkstemp('.png')

rrdtool.graph(path,
          '--imgformat', 'PNG',
          '--width', '540',
          '--height', '100',
          '--start', "-%i" % YEAR,
          '--end', "-1",
          '--vertical-label', 'Downloads/Day',
          '--title', 'Annual downloads',
          '--lower-limit', '0',
          'DEF:downloads=downloads.rrd:downloads:AVERAGE',
          'AREA:downloads#990033:Downloads')

info = rrdtool.info('downloads.rrd')
print (info['last_update'])
print (info['ds[downloads].minimal_heartbeat'])