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/RateSummaryListener.java

@@ -0,0 +1,14 @@
+package net.i2p.stat;
+
+/**
+ * Receive the state of the rate when its coallesced
+ */
+public interface RateSummaryListener {
+    /**
+     * @param totalValue sum of all event values in the most recent period
+     * @param eventCount how many events occurred
+     * @param totalEventTime how long the events were running for
+     * @param period how long this period is
+     */
+    void add(double totalValue, long eventCount, double totalEventTime, long period);
+}