add noise margin

fritzbox_attenuation.py

@@ -65,4 +65,4 @@ if __name__ == "__main__":
         try:
             print_values()
         except:
-            sys.exit("Couldn't retrieve fritzbox connection uptime")
+            sys.exit("Couldn't retrieve fritzbox attenuation")

fritzbox_noise_margin.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+"""
+  fritzbox_attenuation - A munin plugin for Linux to monitor AVM Fritzbox noise margin
+  Copyright (C) 2015 Christian Stade-Schuldt
+  Author: Christian Stade-Schuldt
+  Like Munin, this plugin is licensed under the GNU GPL v2 license
+  http://www.opensource.org/licenses/GPL-2.0
+  Like Munin, this plugin is licensed under the GNU GPL v2 license
+  http://www.opensource.org/licenses/GPL-2.0
+  This plugin requires the fritzconnection plugin. To install it using pip:
+  pip install fritzconnection
+  This plugin supports the following munin configuration parameters:
+
+  [fritzbox_*]
+  env.fritzbox_ip [ip address of the fritzbox]
+  env.fritzbox_username [fritzbox username]
+  env.fritzbox_password [fritzbox password]
+
+  #%# family=auto contrib
+  #%# capabilities=autoconf
+"""
+
+import os
+import sys
+
+from fritzconnection.lib.fritzstatus import FritzStatus
+
+server = os.environ["fritzbox_ip"]
+username = os.environ["fritzbox_username"]
+password = os.environ["fritzbox_password"]
+
+
+def print_values():
+    try:
+        fs = FritzStatus(address=server, user=username, password=password)
+    except Exception as e:
+        sys.exit("Couldn't get noise margin")
+
+    noise_margin = fs.noise_margin
+    print("up.value %.2f" % (int(noise_margin[0]) / 10.0))
+    print("down.value %.2f" % (int(noise_margin[1]) / 10.0))
+
+
+def print_config():
+    print("graph_title AVM Fritz!Box Noise Margin")
+    print("graph_vlabel noise margin in dB")
+    print("graph_scale no")
+    print("graph_category network")
+    print("down.type GAUGE")
+    print("down.label downstram")
+    print("down.draw AREA")
+    print("up.type GAUGE")
+    print("up.label upstream")
+    print("up.draw AREA")
+    if os.environ.get("host_name"):
+        print("host_name " + os.environ["host_name"])
+
+
+if __name__ == "__main__":
+    if len(sys.argv) == 2 and sys.argv[1] == "config":
+        print_config()
+    elif len(sys.argv) == 2 and sys.argv[1] == "autoconf":
+        print("yes")  # Some docs say it'll be called with fetch, some say no arg at all
+    elif len(sys.argv) == 1 or (len(sys.argv) == 2 and sys.argv[1] == "fetch"):
+        try:
+            print_values()
+        except:
+            sys.exit("Couldn't retrieve fritzbox noise_margin")