get zabbix history then plot it

zabbit2pylab.py

#!/usr/bin/env python
"""
Read item history from zabbix, and plot as histogram
"""
import matplotlib
import numpy as np
import matplotlib.mlab as mlab
import matplotlib.pyplot as plt
import requests
import json
import time
from datetime import datetime

ZABBIX_URI = 'http://127.0.0.1/zabbix/api_jsonrpc.php'
ZABBIX_USR = 'user'
ZABBIX_PWD = 'pass'
HOURS = 24 * 1

def zabbixLogin(user, passwd):
  params = {
    'user':user,
    'password':passwd
  }
  return zabbixCall('user.login', params)

def zabbixCall(method='', params={}, auth=''):
  data = {
    'jsonrpc':'2.0',
    'method':method,
    'params':params,
    'id':1
  }
  if len(auth) != 0:
    data['auth'] = auth
  r = requests.post(ZABBIX_URI, data=json.dumps(data), headers={'content-type':'application/json-rpc'})
  return r.json()['result']

authId = zabbixLogin(ZABBIX_USR, ZABBIX_PWD)
print('Get Auth ID: ' + authId)
params = {
  'groupids':21,
  'hostids':11036,
  'graphids':1824829
}
items = zabbixCall('item.get', params, authId)

begin = time.mktime(datetime.now().timetuple()) - 3600 * HOURS
print('Begin loop for history...')
for item in items:
  params = {
    'output':'extend',
    'history':0,
    'itemids':item['itemid'],
    'time_from':begin
  }
  ret = zabbixCall('history.get', params, authId)
#  for x in ret:
#    print int(x['clock']),',',float(x['value'])
  history = map(lambda x: float(x['value']), ret)
  v = np.array(history)

  plt.figure()
  plt.hist(v, bins=200, normed=1)
  plt.title('item: ' + item['itemid'])

#  lline = numpy.percentile(v, 25)
#  uline = numpy.percentile(v, 75)
#  length = uline - lline
#  low = lline - length
#  up = uline + length
#  print(low, up)
  plt.figure()
  plt.boxplot(v, sym='+', notch=True)
  plt.title('item: ' + item['itemid'])
  plt.show()