2006-03-16 jrandom

* Integrate basic hooks for jrobin (http://jrobin.org) into the router
      console.  Selected stats can be harvested automatically and fed into
      in-memory RRD databases, and those databases can be served up either as
      PNG images or as RRDtool compatible XML dumps (see oldstats.jsp for
      details).  A base set of stats are harvested by default, but an
      alternate list can be specified by setting the 'stat.summaries' list on
      the advanced config.  For instance:
      stat.summaries=bw.recvRate.60000,bw.sendRate.60000
    * HTML tweaking for the general config page (thanks void!)
    * Odd NPE fix (thanks Complication!)

core/java/src/net/i2p/stat/Rate.java

@@ -26,6 +26,8 @@ public class Rate {
     private volatile double _lifetimeTotalValue;
     private volatile long _lifetimeEventCount;
     private volatile long _lifetimeTotalEventTime;
+    private RateSummaryListener _summaryListener;
+    private RateStat _stat;
 
     private volatile long _lastCoalesceDate;
     private long _creationDate;
@@ -108,6 +110,9 @@ public class Rate {
     public long getPeriod() {
         return _period;
     }
+    
+    public RateStat getRateStat() { return _stat; }
+    public void setRateStat(RateStat rs) { _stat = rs; }
 
     /**
      *
@@ -203,8 +208,13 @@ public class Rate {
             _currentEventCount = 0;
             _currentTotalEventTime = 0;
         }
+        if (_summaryListener != null)
+            _summaryListener.add(_lastTotalValue, _lastEventCount, _lastTotalEventTime, _period);
     }
 
+    public void setSummaryListener(RateSummaryListener listener) { _summaryListener = listener; }
+    public RateSummaryListener getSummaryListener() { return _summaryListener; }
+    
     /** what was the average value across the events in the last period? */
     public double getAverageValue() {
         if ((_lastTotalValue != 0) && (_lastEventCount > 0))

core/java/src/net/i2p/stat/RateStat.java

@@ -27,8 +27,10 @@ public class RateStat {
         _description = description;
         _groupName = group;
         _rates = new Rate[periods.length];
-        for (int i = 0; i < periods.length; i++)
+        for (int i = 0; i < periods.length; i++) {
             _rates[i] = new Rate(periods[i]);
+            _rates[i].setRateStat(this);
+        }
     }
     public void setStatLog(StatLog sl) { _statLog = sl; }
     
@@ -159,6 +161,7 @@ public class RateStat {
                 _rates[i].load(props, curPrefix, treatAsCurrent);
             } catch (IllegalArgumentException iae) {
                 _rates[i] = new Rate(period);
+                _rates[i].setRateStat(this);
                 if (_log.shouldLog(Log.WARN))
                     _log.warn("Rate for " + prefix + " is corrupt, reinitializing that period");
             }