locus_pv.py

from __future__ import print_function
import time
import dryscrape
import sys
import subprocess

if 'linux' in sys.platform:
    # start xvfb in case no X is running. Make sure xvfb
    # is installed, otherwise this won't work!
    dryscrape.start_xvfb()

# This script downloads power and energy data from the Locus portal, saves to a local spreadsheet, and uploads to pvoutput.org
# Run every 15 minutes from cron

username = 'login_email'
password = 'password'
PVOUTPUT_APIKEY = 'api_key'
PVOUTPUT_SYSTEMID = 'numeric_systemID'

# setup a web scraping session
sess = dryscrape.Session(base_url = 'https://solaros.datareadings.com/')

# we don't need images
sess.set_attribute('auto_load_images', False)

# visit homepage and log in
sess.visit('/')

username_field = sess.at_xpath('//*[@id="username"]')
password_field = sess.at_xpath('//*[@id="password"]')
btnlogin_field = sess.at_xpath('//*[@class="btn btn-primary"]')

username_field.set(username)
password_field.set(password)
btnlogin_field.click()

# Get values
power = sess.at_xpath('//*[@name="instantValue"]',10).text()
energy = sess.at_xpath('//*[@name="lifetimeValue"]',10).text()

if power == 'Offline':
   power = '0'

# print "Taking snapshot"
# sess.render('website.png')

#Output values to a file
f = open('spreadsheet.csv','a')
print(time.strftime("%m/%d/%Y")+", "+time.strftime("%H:%M")+", "+power+", "+energy, file=f)
f.close()

# Upload to pvoutput.org
t_date = 'd={0}'.format(time.strftime('%Y%m%d'))
t_time = 't={0}'.format(time.strftime('%H:%M'))
t_energy = 'v1={0}'.format(1000*float(energy))
t_power = 'v2={0}'.format(1000*float(power))
cmd = ['/usr/bin/curl',
   '-d', t_date,
   '-d', t_time,
   '-d', t_energy,
   '-d', t_power,
   '-d', 'c1=1',
   '-H', 'X-Pvoutput-Apikey: ' + PVOUTPUT_APIKEY,
   '-H', 'X-Pvoutput-SystemId: ' + PVOUTPUT_SYSTEMID,
   'http://pvoutput.org/service/r2/addstatus.jsp']
# print(cmd)
ret = subprocess.call (cmd)
# print(ret)