OpenWeatherMap の API から気温、湿度を取得して不快指数を計算して出力する Sensu プラグインっぽいの

open_weather_map.py

#!/usr/bin/env python

import json, urllib2, sys, time, random

argvs     = sys.argv
cities    = argvs[1].split(",")
timestamp = int(time.time())


def temperature_humidity_index():
        index = 0.81 * int(temperature) + 0.01 * int(humidity) * (0.99 * int(temperature) - 14.3) + 46.3
        return index

def check():
        index = temperature_humidity_index()
        label = city + ' temperature-humidity_index.current'

        if index >= 85 :
                print '%s %s %s' % (label, index, 'critical')
                sys.exit(2)
        elif index >= 75 :
                print '%s %s %s' % (label, index, 'warning')
                sys.exit(1)
        else:
                print '%s %s %s' % (label, index, 'normal')
                sys.exit(0)

def metrics():
        index = temperature_humidity_index()
        label = 'stats' + '.' + city + '.' + 'temperature.current'
        print '%s %s %d\n' % (label, temperature, timestamp)

        label = 'stats' + '.' + city + '.' + 'humidity.current'
        print '%s %s %d\n' % (label, humidity, timestamp)

        label = 'stats' + '.' + city + '.' + 'temperature-humidity_index.current'
        print '%s %s %d\n' % (label, index, timestamp)

for city in cities:
        url = 'http://api.openweathermap.org/data/2.5/weather?q=' + city + ',jp&units=metric'
        r = urllib2.urlopen(url)
        j = json.loads(r.read())

        temperature = j['main']['temp']
        humidity = j['main']['humidity']

        if argvs[2] == "check":
                check()
        elif argvs[2] == "metrics":
                metrics()

        r.close()