Add reporting of logging volume to Smolt.

This reports the logging volume as a percentage of the total amount
stored in the database, for each urgency level. This is intended as a
simple metric to determine stability of MythTV, as higher counts of
higher urgency levels will indicate an increase in problems seen by the
user base.

(cherry picked from commit 5f90b1d)

mythtv/programs/scripts/hardwareprofile/distros/mythtv_data/data_mythtv.py

@@ -453,7 +453,20 @@ def ProcessSmoltInfo(self):
 
         return myth_systemrole , mythremote
 
-
+    def ProcessLogUrgency(self):
+        c = _DB.cursor()
+        c.execute("""SELECT level,count(level) FROM logging GROUP BY level""")
+        levels = ('EMERG', 'ALERT', 'CRIT', 'ERR', 
+                  'WARNING', 'NOTICE', 'INFO') # ignore debugging from totals
+        counts = {}
+        total = 0.
+        for level,count in c.fetchall():
+            if level in range(len(levels)):
+                counts[levels[level]] = count
+                total += count
+        for k,v in counts.items():
+            counts[k] = v/total
+        return {'logurgency':counts}
 
 
 
@@ -470,6 +483,7 @@ def get_data(self,gate):
         self._data.update(self.ProcessMySQL())
         self._data.update(self.ProcessScheduler())
         self._data.update(self.Processtuners())
+        self._data.update(self.ProcessLogUrgency())
 
         self._data.theme          = _SETTINGS.Theme
         self._data.country          = _SETTINGS.Country