From 1834dd5a15852a653efdacc8c18431976b294c09 Mon Sep 17 00:00:00 2001
From: Guido Günther <agx@sigxcpu.org>
Date: Wed, 28 Aug 2013 10:01:28 +0200
Subject: Initial commit

---
 pellematic-temp | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100755 pellematic-temp

(limited to 'pellematic-temp')

diff --git a/pellematic-temp b/pellematic-temp
new file mode 100755
index 0000000..8fe25c5
--- /dev/null
+++ b/pellematic-temp
@@ -0,0 +1,149 @@
+#!/usr/bin/python
+# vim: set fileencoding=utf-8 :
+#
+# Munin plugin to monitor the temperature values
+# of a pelletronic/pelletronic touch 2.0
+#
+# Copyright 2013 Guido Guenther <agx@sigxcpu.org>
+#
+# Licesnse: GPLv3
+#
+# 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')
+
+# The items we want to plot:
+items = [# Outside temperature sensor (X2)
+         "CAPPL:LOCAL.L_aussentemperatur_ist",
+         # 1. Pelletronic
+         "CAPPL:FA[0].L_kesseltemperatur",
+         "CAPPL:FA[0].L_kesseltemperatur_soll_anzeige",
+         #"CAPPL:FA[0].L_feuerraumtemperatur",
+         #"CAPPL:FA[0].L_feuerraumtemperatur_soll",
+         # 1. Buffer
+         # TPO (X7)
+         "CAPPL:LOCAL.L_pu[0].ausschaltfuehler_ist",
+         "CAPPL:LOCAL.L_pu[0].ausschaltfuehler_soll",
+         # TPM (X8)
+         "CAPPL:LOCAL.L_pu[0].einschaltfuehler_ist",
+         "CAPPL:LOCAL.L_pu[0].einschaltfuehler_soll",
+         # 1. Heating circuit
+         # VL1 (X4)
+         "CAPPL:LOCAL.L_hk[0].vorlauftemp_ist",
+        ]
+
+def canon(name):
+    return re.sub(r"[^a-zA-Z0-9_]", "_", name)
+
+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)
+    for item in out:
+        if item['name'] in items:
+            name = item['shortText']
+            print "%s.label %s" % (canon(name), name)
+            print "%s.type GAUGE" % canon(name)
+            thickness = 1 if item['name'].endswith('soll') 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)
+    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:
+        if item['name'] in items:
+            print "%s.value %.2f" % (canon(item['shortText']),
+                                     degree_celsius(item))
+
+
+def main(args):
+    target = os.getenv('address')
+    if not target:
+        print >>sys.stderr, "No ip address configured"
+        return 1
+    url = 'http://%s' % target
+    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))
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