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| -rwxr-xr-x | pellematic-temp2 | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/pellematic-temp2 b/pellematic-temp2 new file mode 100755 index 0000000..320103f --- /dev/null +++ b/pellematic-temp2 @@ -0,0 +1,158 @@ +#!/usr/bin/python +# vim: set fileencoding=utf-8 : +# +# Munin plugin to monitor the temperature values +# of the pellematic burning chamber +# +# 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 +# +#%# 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 = { + "CAPPL:FA[0].L_feuerraumtemperatur": + 'Combustion Chamber Temp', + "CAPPL:FA[0].L_feuerraumtemperatur_soll": + 'Combustion Chamber Temp Set', + "CAPPL:FA[0].L_agt_zuend_flammueb": + 'Flue Gas Temp Ignition Control', +} + +def fixup(name): + return name + +def canon(name): + return re.sub(r"[^a-zA-Z0-9_]", "_", name) + +def get_name(item): + if item['shortText'] != '???': + return fixup(item['shortText']) + else: + return items[item['name']] + +def print_config(url): + print """graph_title Pellematic Combustion Chamber Temperature values +graph_vlabel Temperature in Degree Celsius +graph_category Heating +graph_info This graph shows the temperature values of the combustion chamber of a pellematic""" + + out = fetch_raw(url) + for item in out: + name = get_name(item) + if name: + print "%s.label %s" % (canon(name), name) + print "%s.type GAUGE" % canon(name) + thickness = 1 if name.endswith(' Set') 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(items.keys()) + r = requests.post(url, + data=payload, + params=params, + cookies=cookies, + headers=headers) + + if hasattr(r.json, '__call__'): + ret = r.json() + else: # in requests 0.12 json isn't a callable + ret = r.json + + if debug: + print >>sys.stderr, ret + + return ret + +def fetch_values(url): + out = fetch_raw(url) + for item in out: + name = get_name(item) + if name: + print "%s.value %.2f" % (name, + degree_celsius(item)) + + +def main(args): + if not url: + print >>sys.stderr, "No url< configured" + 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 >>sys.stderr, "Failed to fetch config: '%s'" % e + return 1 + return 0 + try: + fetch_values(url) + except Exception as e: + print >>sys.stderr, "Failed to fetch values: '%s'" % e + return 1 + return 0 + +if __name__ == "__main__": + sys.exit(main(sys.argv)) |