send the stats page out in chunks (more mem efficient, blah blah blah)
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jrandom
@ -29,183 +29,180 @@ public class StatsGenerator {
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_log = context.logManager().getLog(StatsGenerator.class);
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}
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public String generateStatsPage() {
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ByteArrayOutputStream baos = new ByteArrayOutputStream(32*1024);
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try {
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generateStatsPage(baos);
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} catch (IOException ioe) {
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_log.error("Error generating stats", ioe);
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}
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return new String(baos.toByteArray());
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}
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public void generateStatsPage(OutputStream out) throws IOException {
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PrintWriter pw = new PrintWriter(out);
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pw.println("<html><head><title>I2P Router Stats</title></head><body>");
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pw.println("<h1>Router statistics</h1>");
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pw.println("<i><a href=\"/routerConsole.html\">console</a> | <a href=\"/routerStats.html\">stats</a></i><hr />");
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StringBuffer buf = new StringBuffer(16*1024);
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buf.append("<html><head><title>I2P Router Stats</title></head><body>");
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buf.append("<h1>Router statistics</h1>");
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buf.append("<i><a href=\"/routerConsole.html\">console</a> | <a href=\"/routerStats.html\">stats</a></i><hr />");
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buf.append("<form action=\"/routerStats.html\">");
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buf.append("<select name=\"go\" onChange='location.href=this.value'>");
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out.write(buf.toString().getBytes());
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buf.setLength(0);
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Map groups = _context.statManager().getStatsByGroup();
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pw.println("<form action=\"/routerStats.html\">");
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pw.println("<select name=\"go\" onChange='location.href=this.value'>");
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for (Iterator iter = groups.keySet().iterator(); iter.hasNext(); ) {
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String group = (String)iter.next();
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Set stats = (Set)groups.get(group);
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pw.print("<option value=\"/routerStats.html#");
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pw.print(group);
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pw.print("\">");
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pw.print(group);
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pw.println("</option>\n");
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buf.append("<option value=\"/routerStats.html#").append(group).append("\">");
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buf.append(group).append("</option>\n");
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for (Iterator statIter = stats.iterator(); statIter.hasNext(); ) {
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String stat = (String)statIter.next();
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pw.print("<option value=\"/routerStats.html#");
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pw.print(stat);
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pw.print("\">...");
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pw.print(stat);
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pw.println("</option>\n");
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buf.append("<option value=\"/routerStats.html#");
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buf.append(stat);
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buf.append("\">...");
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buf.append(stat);
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buf.append("</option>\n");
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}
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out.write(buf.toString().getBytes());
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buf.setLength(0);
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}
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pw.println("</select>");
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pw.println("</form>");
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buf.append("</select>");
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buf.append("</form>");
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pw.print("Statistics gathered during this router's uptime (");
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buf.append("Statistics gathered during this router's uptime (");
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long uptime = _context.router().getUptime();
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pw.print(DataHelper.formatDuration(uptime));
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pw.println("). The data gathered is quantized over a 1 minute period, so should just be used as an estimate<p />");
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buf.append(DataHelper.formatDuration(uptime));
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buf.append("). The data gathered is quantized over a 1 minute period, so should just be used as an estimate<p />");
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out.write(buf.toString().getBytes());
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buf.setLength(0);
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for (Iterator iter = groups.keySet().iterator(); iter.hasNext(); ) {
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String group = (String)iter.next();
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Set stats = (Set)groups.get(group);
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pw.print("<h2><a name=\"");
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pw.print(group);
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pw.print("\">");
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pw.print(group);
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pw.println("</a></h2>");
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pw.println("<ul>");
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buf.append("<h2><a name=\"");
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buf.append(group);
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buf.append("\">");
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buf.append(group);
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buf.append("</a></h2>");
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buf.append("<ul>");
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out.write(buf.toString().getBytes());
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buf.setLength(0);
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for (Iterator statIter = stats.iterator(); statIter.hasNext(); ) {
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String stat = (String)statIter.next();
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pw.print("<li><b><a name=\"");
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pw.print(stat);
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pw.print("\">");
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pw.print(stat);
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pw.println("</a></b><br />");
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buf.append("<li><b><a name=\"");
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buf.append(stat);
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buf.append("\">");
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buf.append(stat);
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buf.append("</a></b><br />");
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if (_context.statManager().isFrequency(stat))
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renderFrequency(stat, pw);
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renderFrequency(stat, buf);
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else
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renderRate(stat, pw);
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renderRate(stat, buf);
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out.write(buf.toString().getBytes());
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buf.setLength(0);
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}
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pw.println("</ul><hr />");
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out.write("</ul><hr />".getBytes());
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}
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pw.println("</body></html>");
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pw.flush();
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out.write("</body></html>".getBytes());
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}
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private void renderFrequency(String name, PrintWriter pw) throws IOException {
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private void renderFrequency(String name, StringBuffer buf) {
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FrequencyStat freq = _context.statManager().getFrequency(name);
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pw.print("<i>");
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pw.print(freq.getDescription());
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pw.println("</i><br />");
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buf.append("<i>");
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buf.append(freq.getDescription());
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buf.append("</i><br />");
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long periods[] = freq.getPeriods();
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Arrays.sort(periods);
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for (int i = 0; i < periods.length; i++) {
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renderPeriod(pw, periods[i], "frequency");
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renderPeriod(buf, periods[i], "frequency");
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Frequency curFreq = freq.getFrequency(periods[i]);
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pw.print(" <i>avg per period:</i> (");
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pw.print(num(curFreq.getAverageEventsPerPeriod()));
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pw.print(", max ");
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pw.print(num(curFreq.getMaxAverageEventsPerPeriod()));
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buf.append(" <i>avg per period:</i> (");
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buf.append(num(curFreq.getAverageEventsPerPeriod()));
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buf.append(", max ");
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buf.append(num(curFreq.getMaxAverageEventsPerPeriod()));
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if ( (curFreq.getMaxAverageEventsPerPeriod() > 0) && (curFreq.getAverageEventsPerPeriod() > 0) ) {
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pw.print(", current is ");
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pw.print(pct(curFreq.getAverageEventsPerPeriod()/curFreq.getMaxAverageEventsPerPeriod()));
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pw.print(" of max");
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buf.append(", current is ");
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buf.append(pct(curFreq.getAverageEventsPerPeriod()/curFreq.getMaxAverageEventsPerPeriod()));
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buf.append(" of max");
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}
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pw.print(")");
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buf.append(")");
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//buf.append(" <i>avg interval between updates:</i> (").append(num(curFreq.getAverageInterval())).append("ms, min ");
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//buf.append(num(curFreq.getMinAverageInterval())).append("ms)");
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pw.print(" <i>strict average per period:</i> ");
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pw.print(num(curFreq.getStrictAverageEventsPerPeriod()));
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pw.print(" events (averaged ");
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pw.print(" using the lifetime of ");
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pw.print(num(curFreq.getEventCount()));
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pw.print(" events)");
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pw.println("<br />");
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buf.append(" <i>strict average per period:</i> ");
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buf.append(num(curFreq.getStrictAverageEventsPerPeriod()));
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buf.append(" events (averaged ");
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buf.append(" using the lifetime of ");
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buf.append(num(curFreq.getEventCount()));
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buf.append(" events)");
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buf.append("<br />");
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}
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pw.println("<br />");
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buf.append("<br />");
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}
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private void renderRate(String name, PrintWriter pw) throws IOException {
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private void renderRate(String name, StringBuffer buf) {
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RateStat rate = _context.statManager().getRate(name);
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pw.print("<i>");
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pw.print(rate.getDescription());
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pw.println("</i><br />");
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buf.append("<i>");
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buf.append(rate.getDescription());
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buf.append("</i><br />");
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long periods[] = rate.getPeriods();
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Arrays.sort(periods);
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pw.println("<ul>");
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buf.append("<ul>");
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for (int i = 0; i < periods.length; i++) {
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pw.println("<li>");
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renderPeriod(pw, periods[i], "rate");
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buf.append("<li>");
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renderPeriod(buf, periods[i], "rate");
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Rate curRate = rate.getRate(periods[i]);
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pw.print( "<i>avg value:</i> (");
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pw.print(num(curRate.getAverageValue()));
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pw.print(" peak ");
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pw.print(num(curRate.getExtremeAverageValue()));
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pw.print(", [");
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pw.print(pct(curRate.getPercentageOfExtremeValue()));
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pw.print(" of max");
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pw.print(", and ");
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pw.print(pct(curRate.getPercentageOfLifetimeValue()));
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pw.print(" of lifetime average]");
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buf.append( "<i>avg value:</i> (");
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buf.append(num(curRate.getAverageValue()));
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buf.append(" peak ");
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buf.append(num(curRate.getExtremeAverageValue()));
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buf.append(", [");
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buf.append(pct(curRate.getPercentageOfExtremeValue()));
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buf.append(" of max");
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buf.append(", and ");
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buf.append(pct(curRate.getPercentageOfLifetimeValue()));
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buf.append(" of lifetime average]");
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pw.print(")");
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pw.print(" <i>highest total period value:</i> (");
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pw.print(num(curRate.getExtremeTotalValue()));
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pw.print(")");
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buf.append(")");
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buf.append(" <i>highest total period value:</i> (");
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buf.append(num(curRate.getExtremeTotalValue()));
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buf.append(")");
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if (curRate.getLifetimeTotalEventTime() > 0) {
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pw.print(" <i>saturation:</i> (");
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pw.print(pct(curRate.getLastEventSaturation()));
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pw.print(")");
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pw.print(" <i>saturated limit:</i> (");
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pw.print(num(curRate.getLastSaturationLimit()));
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pw.print(")");
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pw.print(" <i>peak saturation:</i> (");
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pw.print(pct(curRate.getExtremeEventSaturation()));
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pw.print(")");
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pw.print(" <i>peak saturated limit:</i> (");
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pw.print(num(curRate.getExtremeSaturationLimit()));
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pw.print(")");
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buf.append(" <i>saturation:</i> (");
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buf.append(pct(curRate.getLastEventSaturation()));
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buf.append(")");
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buf.append(" <i>saturated limit:</i> (");
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buf.append(num(curRate.getLastSaturationLimit()));
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buf.append(")");
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buf.append(" <i>peak saturation:</i> (");
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buf.append(pct(curRate.getExtremeEventSaturation()));
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buf.append(")");
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buf.append(" <i>peak saturated limit:</i> (");
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buf.append(num(curRate.getExtremeSaturationLimit()));
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buf.append(")");
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}
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pw.print(" <i>events per period:</i> ");
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pw.print(num(curRate.getLastEventCount()));
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buf.append(" <i>events per period:</i> ");
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buf.append(num(curRate.getLastEventCount()));
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long numPeriods = curRate.getLifetimePeriods();
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if (numPeriods > 0) {
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double avgFrequency = curRate.getLifetimeEventCount() / (double)numPeriods;
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double peakFrequency = curRate.getExtremeEventCount();
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pw.print(" (lifetime average: ");
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pw.print(num(avgFrequency));
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pw.print(", peak average: ");
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pw.print(num(curRate.getExtremeEventCount()));
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pw.println(")");
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buf.append(" (lifetime average: ");
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buf.append(num(avgFrequency));
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buf.append(", peak average: ");
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buf.append(num(curRate.getExtremeEventCount()));
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buf.append(")");
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}
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pw.print("</li>");
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buf.append("</li>");
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if (i + 1 == periods.length) {
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// last one, so lets display the strict average
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pw.print("<li><b>lifetime average value:</b> ");
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pw.print(num(curRate.getLifetimeAverageValue()));
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pw.print(" over ");
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pw.print(num(curRate.getLifetimeEventCount()));
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pw.println(" events<br /></li>");
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buf.append("<li><b>lifetime average value:</b> ");
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buf.append(num(curRate.getLifetimeAverageValue()));
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buf.append(" over ");
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buf.append(num(curRate.getLifetimeEventCount()));
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buf.append(" events<br /></li>");
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}
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}
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pw.print("</ul>");
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pw.println("<br />");
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buf.append("</ul>");
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buf.append("<br />");
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}
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private static void renderPeriod(PrintWriter pw, long period, String name) throws IOException {
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pw.print("<b>");
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pw.print(DataHelper.formatDuration(period));
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pw.print(" ");
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pw.print(name);
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pw.print(":</b> ");
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private static void renderPeriod(StringBuffer buf, long period, String name) {
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buf.append("<b>");
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buf.append(DataHelper.formatDuration(period));
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buf.append(" ");
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buf.append(name);
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buf.append(":</b> ");
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}
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private final static DecimalFormat _fmt = new DecimalFormat("###,##0.00");
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