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* NetDb stats: Normalize tunnel build stats for increased anonymity,

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effective in 0.7.6
This commit is contained in:
zzz
2009-06-27 01:08:40 +00:00
parent 47cd9beefa
commit 0606050231
1 changed files with 55 additions and 6 deletions
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49
router/java/src/net/i2p/router/StatisticsManager.java
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@ -139,12 +139,18 @@ public class StatisticsManager implements Service {
//includeRate("tunnel.buildRequestTime", stats, new long[] { 10*60*1000 });
long rate = 60*60*1000;
boolean commentOutIn076 = RouterVersion.VERSION.equals("0.7.5");
if (commentOutIn076) {
includeRate("tunnel.buildClientExpire", stats, new long[] { rate });
includeRate("tunnel.buildClientReject", stats, new long[] { rate });
includeRate("tunnel.buildClientSuccess", stats, new long[] { rate });
includeRate("tunnel.buildExploratoryExpire", stats, new long[] { rate });
includeRate("tunnel.buildExploratoryReject", stats, new long[] { rate });
includeRate("tunnel.buildExploratorySuccess", stats, new long[] { rate });
} else {
includeTunnelRates("Client", stats, rate);
includeTunnelRates("Exploratory", stats, rate);
}
//includeRate("tunnel.rejectTimeout", stats, new long[] { 10*60*1000 });
//includeRate("tunnel.rejectOverloaded", stats, new long[] { 10*60*1000 });
//includeRate("tunnel.acceptLoad", stats, new long[] { 10*60*1000 });
@ -223,6 +229,49 @@ public class StatisticsManager implements Service {
return buf.toString();
}
private static final String[] tunnelStats = { "Expire", "Reject", "Success" };
/**
* Add tunnel build rates with some mods to hide absolute quantities
* In particular, report counts normalized to 100 (i.e. a percentage)
*/
private void includeTunnelRates(String tunnelType, Properties stats, long selectedPeriod) {
long totalEvents = 0;
for (String tunnelStat : tunnelStats) {
String rateName = "tunnel.build" + tunnelType + tunnelStat;
RateStat stat = _context.statManager().getRate(rateName);
if (stat == null) continue;
Rate curRate = stat.getRate(selectedPeriod);
if (curRate == null) continue;
totalEvents += curRate.getLastEventCount();
}
if (totalEvents <= 0)
return;
for (String tunnelStat : tunnelStats) {
String rateName = "tunnel.build" + tunnelType + tunnelStat;
RateStat stat = _context.statManager().getRate(rateName);
if (stat == null) continue;
Rate curRate = stat.getRate(selectedPeriod);
if (curRate == null) continue;
double fudgeQuantity = 100.0d * curRate.getLastEventCount() / totalEvents;
stats.setProperty("stat_" + rateName + '.' + getPeriod(curRate), renderRate(curRate, fudgeQuantity));
}
}
private String renderRate(Rate rate, double fudgeQuantity) {
StringBuffer buf = new StringBuffer(128);
buf.append(num(rate.getAverageValue())).append(';');
buf.append(num(rate.getExtremeAverageValue())).append(';');
buf.append(pct(rate.getPercentageOfLifetimeValue())).append(';');
if (rate.getLifetimeTotalEventTime() > 0) {
// bah saturation
buf.append("0;0;0;0;");
}
long numPeriods = rate.getLifetimePeriods();
buf.append(num(fudgeQuantity)).append(';');
return buf.toString();
}
/* report the same data for tx and rx, for enhanced anonymity */
private void includeAverageThroughput(Properties stats) {
RateStat sendRate = _context.statManager().getRate("bw.sendRate");