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#!/usr/bin/python3
# vim: set fileencoding=utf-8 :
#
# Munin plugin to monitor the temperature values
# of a pellematic/pelletronic touch 2.0
#
# Copyright 2013 Guido Günther <agx@sigxcpu.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# depends: python-requests
#
# FIXME: This currently doesn't probe the connected systems
#
#%# capabilities=autoconf
#%# family=contrib
import requests
import os
import re
import sys
import json
username = os.getenv('username', 'oekofen')
password = os.getenv('password', username)
debug = os.getenv('debug')
url = os.getenv('url')
# The items we want to plot:
items = {# Outside temperature sensor (X2)
"CAPPL:LOCAL.L_aussentemperatur_ist":
"Outside Temp Act",
# 1. Pelletronic
"CAPPL:FA[0].L_kesseltemperatur":
"Boiler Temp",
"CAPPL:FA[0].L_kesseltemperatur_soll_anzeige":
"Boiler Temp Set",
#"CAPPL:FA[0].L_feuerraumtemperatur",
#"CAPPL:FA[0].L_feuerraumtemperatur_soll",
# 1. Buffer
# TPM (X8)
"CAPPL:LOCAL.L_pu[0].ausschaltfuehler_ist":
"TPM Act",
"CAPPL:LOCAL.L_pu[0].ausschaltfuehler_soll":
"TPM Set",
# TPO (X7)
"CAPPL:LOCAL.L_pu[0].einschaltfuehler_ist":
"TPO Act",
"CAPPL:LOCAL.L_pu[0].einschaltfuehler_soll":
"TPO Set",
# 1. Heating circuit
# VL1 (X4)
"CAPPL:LOCAL.L_hk[0].vorlauftemp_ist":
"Flow Temp Act",
"CAPPL:LOCAL.L_hk[0].vorlauftemp_soll":
"Flow Temp Set",
"CAPPL:LOCAL.hk[0].raumtemp_heizen":
"Room Temp Heating",
"CAPPL:LOCAL.hk[0].raumtemp_absenken":
"Room Temp Set Back Set",
"CAPPL:LOCAL.hk[0].heizgrenze_heizen":
"H Limit Heating",
"CAPPL:LOCAL.hk[0].heizgrenze_absenken":
"H Limit Set Back",
# drinking water
"CAPPL:LOCAL.L_ww[0].einschaltfuehler_ist":
"Switch On Sensor Act",
}
def fixup(name):
# TPM and TPO are swapped in the returned JSON
# (compare to /js/config.min.js) so we need
# to fix it up:
if name.startswith('TPM'):
return 'TPO' + name[3:]
elif name.startswith('TPO'):
return 'TPM' + name[3:]
else:
return name
def canon(name):
return re.sub(r"[^a-zA-Z0-9_]", "_", name)
def is_preset(name):
"""
Preset values are inconsistently named so
so we have to decide manually.
"""
if name.endswith(' Set'):
return True
elif ' Limit ' in name:
return True
elif name == 'Room Temp Heating':
return True
else:
return False
def print_config(url):
print("""graph_title Pellematic Temperature values
graph_vlabel Temperature in Degree Celsius
graph_category Heating
graph_info This graph shows different temperture values as displayed by a Pelletronic Touch 2.0 by Ökofen""")
out = fetch_raw(url)
names = []
for item in out:
if item['name'] in list(items.keys()):
names.append(items[item['name']])
for name in sorted(names):
print("%s.label %s" % (canon(name), name))
print("%s.type GAUGE" % canon(name))
thickness = 1 if is_preset(name) else 2
print("%s.draw LINE%d" % (canon(name), thickness))
def degree_celsius(val):
return float(int(val['value'])) / float(val['divisor'])
def fetch_raw(url):
# Perform authentication and get the cookie
auth_formdata = {'language': 'en',
'username': username,
'password': password,
'submit': 'Login',
}
r = requests.post(url, data=auth_formdata)
pksession = r.cookies['pksession']
cookies = { 'pksession': pksession,
'language': 'en' }
params = { 'action': 'get',
'attr': '1',
}
# These are the headers used by the supplied application
# It mostly doesn't matter what we pass but the backend
# breaks with a lua error without a Accept-Language header:
headers = {'Accept': 'application/json',
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
'Accept-Language': 'en',
}
# The items to fetch are passed as simple json string
payload = json.dumps(list(items.keys()))
r = requests.post(url,
data=payload,
params=params,
cookies=cookies,
headers=headers)
ret = r.json()
if debug:
print(ret, file=sys.stderr)
return ret
def fetch_values(url):
out = fetch_raw(url)
for item in out:
if item['name'] in items:
name = canon(items[item['name']])
print("%s.value %.2f" % (name,
degree_celsius(item)))
def main(args):
if not url:
print("No url configured", file=sys.stderr)
return 1
if len(args) > 1:
if args[1] in [ 'autoconf', 'detect' ]:
try:
fetch_raw(url)
print("yes")
return 0
except:
print("no")
return 1
elif args[1] == 'config':
try:
print_config(url)
except Exception as e:
print("Failed to fetch config: '%s'" % e, file=sys.stderr)
return 1
return 0
try:
fetch_values(url)
except Exception as e:
print("Failed to fetch values: '%s'" % e, file=sys.stderr)
return 1
return 0
if __name__ == "__main__":
sys.exit(main(sys.argv))
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