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cleanup; limit concurrent renderings to conserve memory

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zzz
2010-11-24 15:01:14 +00:00
parent af519732c4
commit 90490cb65d
1 changed files with 68 additions and 19 deletions
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87
apps/routerconsole/java/src/net/i2p/router/web/StatSummarizer.java
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@ -6,6 +6,7 @@ import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.util.concurrent.Semaphore;
import net.i2p.router.RouterContext;
import net.i2p.stat.Rate;
@ -20,17 +21,20 @@ import org.jrobin.graph.RrdGraphDef;
*
*/
public class StatSummarizer implements Runnable {
private RouterContext _context;
private Log _log;
private final RouterContext _context;
private final Log _log;
/** list of SummaryListener instances */
private List _listeners;
private final List<SummaryListener> _listeners;
private static StatSummarizer _instance;
private static final int MAX_CONCURRENT_PNG = 3;
private final Semaphore _sem;
public StatSummarizer() {
_context = (RouterContext)RouterContext.listContexts().get(0); // fuck it, only summarize one per jvm
_log = _context.logManager().getLog(getClass());
_listeners = new ArrayList(16);
_instance = this;
_sem = new Semaphore(MAX_CONCURRENT_PNG, true);
}
public static StatSummarizer instance() { return _instance; }
@ -44,7 +48,7 @@ public class StatSummarizer implements Runnable {
}
/** list of SummaryListener instances */
List getListeners() { return _listeners; }
List<SummaryListener> getListeners() { return _listeners; }
private static final String DEFAULT_DATABASES = "bw.sendRate.60000" +
",bw.recvRate.60000" +
@ -77,31 +81,32 @@ public class StatSummarizer implements Runnable {
( (spec != null) && (oldSpecs != null) && (oldSpecs.equals(spec))) )
return oldSpecs;
List old = parseSpecs(oldSpecs);
List newSpecs = parseSpecs(spec);
List<Rate> old = parseSpecs(oldSpecs);
List<Rate> newSpecs = parseSpecs(spec);
// remove old ones
for (int i = 0; i < old.size(); i++) {
Rate r = (Rate)old.get(i);
for (Rate r : old) {
if (!newSpecs.contains(r))
removeDb(r);
}
// add new ones
StringBuilder buf = new StringBuilder();
for (int i = 0; i < newSpecs.size(); i++) {
Rate r = (Rate)newSpecs.get(i);
boolean comma = false;
for (Rate r : newSpecs) {
if (!old.contains(r))
addDb(r);
buf.append(r.getRateStat().getName()).append(".").append(r.getPeriod());
if (i + 1 < newSpecs.size())
if (comma)
buf.append(',');
else
comma = true;
buf.append(r.getRateStat().getName()).append(".").append(r.getPeriod());
}
return buf.toString();
}
private void removeDb(Rate r) {
for (int i = 0; i < _listeners.size(); i++) {
SummaryListener lsnr = (SummaryListener)_listeners.get(i);
SummaryListener lsnr = _listeners.get(i);
if (lsnr.getRate().equals(r)) {
_listeners.remove(i);
lsnr.stopListening();
@ -115,16 +120,40 @@ public class StatSummarizer implements Runnable {
lsnr.startListening();
//System.out.println("Start listening for " + r.getRateStat().getName() + ": " + r.getPeriod());
}
public boolean renderPng(Rate rate, OutputStream out) throws IOException {
return renderPng(rate, out, -1, -1, false, false, false, false, -1, true);
}
public boolean renderPng(Rate rate, OutputStream out, int width, int height, boolean hideLegend, boolean hideGrid, boolean hideTitle, boolean showEvents, int periodCount, boolean showCredit) throws IOException {
/**
* This does the single data graphs.
* For the two-data bandwidth graph see renderRatePng().
* Synchronized to conserve memory.
* @return success
*/
public boolean renderPng(Rate rate, OutputStream out, int width, int height, boolean hideLegend,
boolean hideGrid, boolean hideTitle, boolean showEvents, int periodCount,
boolean showCredit) throws IOException {
try {
try {
_sem.acquire();
} catch (InterruptedException ie) {}
return locked_renderPng(rate, out, width, height, hideLegend, hideGrid, hideTitle, showEvents,
periodCount, showCredit);
} finally {
_sem.release();
}
}
private boolean locked_renderPng(Rate rate, OutputStream out, int width, int height, boolean hideLegend,
boolean hideGrid, boolean hideTitle, boolean showEvents, int periodCount,
boolean showCredit) throws IOException {
if (width > GraphHelper.MAX_X)
width = GraphHelper.MAX_X;
if (height > GraphHelper.MAX_Y)
height = GraphHelper.MAX_Y;
for (int i = 0; i < _listeners.size(); i++) {
SummaryListener lsnr = (SummaryListener)_listeners.get(i);
SummaryListener lsnr = _listeners.get(i);
if (lsnr.getRate().equals(rate)) {
lsnr.renderPng(out, width, height, hideLegend, hideGrid, hideTitle, showEvents, periodCount, showCredit);
return true;
@ -132,13 +161,15 @@ public class StatSummarizer implements Runnable {
}
return false;
}
public boolean renderPng(OutputStream out, String templateFilename) throws IOException {
SummaryRenderer.render(_context, out, templateFilename);
return true;
}
public boolean getXML(Rate rate, OutputStream out) throws IOException {
for (int i = 0; i < _listeners.size(); i++) {
SummaryListener lsnr = (SummaryListener)_listeners.get(i);
SummaryListener lsnr = _listeners.get(i);
if (lsnr.getRate().equals(rate)) {
lsnr.getData().exportXml(out);
out.write(("<!-- Rate: " + lsnr.getRate().getRateStat().getName() + " for period " + lsnr.getRate().getPeriod() + " -->\n").getBytes());
@ -152,8 +183,26 @@ public class StatSummarizer implements Runnable {
/**
* This does the two-data bandwidth graph only.
* For all other graphs see SummaryRenderer
* Synchronized to conserve memory.
* @return success
*/
public boolean renderRatePng(OutputStream out, int width, int height, boolean hideLegend, boolean hideGrid, boolean hideTitle, boolean showEvents, int periodCount, boolean showCredit) throws IOException {
public boolean renderRatePng(OutputStream out, int width, int height, boolean hideLegend,
boolean hideGrid, boolean hideTitle, boolean showEvents,
int periodCount, boolean showCredit) throws IOException {
try {
try {
_sem.acquire();
} catch (InterruptedException ie) {}
return locked_renderRatePng(out, width, height, hideLegend, hideGrid, hideTitle, showEvents,
periodCount, showCredit);
} finally {
_sem.release();
}
}
private boolean locked_renderRatePng(OutputStream out, int width, int height, boolean hideLegend,
boolean hideGrid, boolean hideTitle, boolean showEvents,
int periodCount, boolean showCredit) throws IOException {
long end = _context.clock().now() - 60*1000;
if (width > GraphHelper.MAX_X)
width = GraphHelper.MAX_X;
@ -230,9 +279,9 @@ public class StatSummarizer implements Runnable {
* @param specs statName.period,statName.period,statName.period
* @return list of Rate objects
*/
private List parseSpecs(String specs) {
private List<Rate> parseSpecs(String specs) {
StringTokenizer tok = new StringTokenizer(specs, ",");
List rv = new ArrayList();
List<Rate> rv = new ArrayList();
while (tok.hasMoreTokens()) {
String spec = tok.nextToken();
int split = spec.lastIndexOf('.');