package net.i2p.router.web;
import java.io.IOException;
import java.io.Serializable;
import java.io.Writer;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import net.i2p.data.DataHelper;
import net.i2p.stat.Rate;
/**
* /graphs.jsp, including form, and /graph.jsp
*/
public class GraphHelper extends FormHandler {
protected Writer _out;
private int _periodCount;
private boolean _showEvents;
private int _width;
private int _height;
private int _refreshDelaySeconds;
private boolean _persistent;
private String _stat;
private int _end;
private static final String PROP_X = "routerconsole.graphX";
private static final String PROP_Y = "routerconsole.graphY";
private static final String PROP_REFRESH = "routerconsole.graphRefresh";
private static final String PROP_PERIODS = "routerconsole.graphPeriods";
private static final String PROP_EVENTS = "routerconsole.graphEvents";
public static final int DEFAULT_X = 250;
public static final int DEFAULT_Y = 100;
private static final int DEFAULT_REFRESH = 5*60;
private static final int DEFAULT_PERIODS = 60;
static final int MAX_X = 2048;
static final int MAX_Y = 1024;
private static final int MIN_X = 200;
private static final int MIN_Y = 60;
private static final int MIN_C = 20;
private static final int MAX_C = SummaryListener.MAX_ROWS;
private static final int MIN_REFRESH = 15;
/** set the defaults after we have a context */
@Override
public void setContextId(String contextId) {
super.setContextId(contextId);
_width = _context.getProperty(PROP_X, DEFAULT_X);
_height = _context.getProperty(PROP_Y, DEFAULT_Y);
_periodCount = _context.getProperty(PROP_PERIODS, DEFAULT_PERIODS);
_refreshDelaySeconds = _context.getProperty(PROP_REFRESH, DEFAULT_REFRESH);
_showEvents = _context.getBooleanProperty(PROP_EVENTS);
}
/**
* This must be output in the jsp since *lt;meta> must be in the <head>
* @since 0.8.7
*/
public String getRefreshMeta() {
if (_refreshDelaySeconds <= 8 ||
ConfigRestartBean.getRestartTimeRemaining() < (1000 * (_refreshDelaySeconds + 30)))
return "";
// shorten the refresh by 3 seconds so we beat the iframe
return "<meta http-equiv=\"refresh\" content=\"" + (_refreshDelaySeconds - 3) + "\">";
}
/**
* This was a HelperBase but now it's a FormHandler
* @since 0.8.2
*/
public void storeWriter(Writer out) { _out = out; }
public void setPeriodCount(String str) {
setC(str);
}
/** @since 0.9 */
public void setE(String str) {
try {
_end = Math.max(0, Integer.parseInt(str));
} catch (NumberFormatException nfe) {}
}
/** @since 0.9 shorter parameter */
public void setC(String str) {
try {
_periodCount = Math.max(MIN_C, Math.min(Integer.parseInt(str), MAX_C));
} catch (NumberFormatException nfe) {}
}
public void setShowEvents(String b) { _showEvents = !"false".equals(b); }
public void setHeight(String str) {
setH(str);
}
/** @since 0.9 shorter parameter */
public void setH(String str) {
try {
_height = Math.max(MIN_Y, Math.min(Integer.parseInt(str), MAX_Y));
} catch (NumberFormatException nfe) {}
}
public void setWidth(String str) {
setW(str);
}
/** @since 0.9 shorter parameter */
public void setW(String str) {
try {
_width = Math.max(MIN_X, Math.min(Integer.parseInt(str), MAX_X));
} catch (NumberFormatException nfe) {}
}
public void setRefreshDelay(String str) {
try {
int rds = Integer.parseInt(str);
if (rds > 0)
_refreshDelaySeconds = Math.max(rds, MIN_REFRESH);
else
_refreshDelaySeconds = -1;
} catch (NumberFormatException nfe) {}
}
/** @since 0.8.7 */
public void setPersistent(String foo) { _persistent = true; }
/**
* For single stat page
* @since 0.9
*/
public void setStat(String stat) {
_stat = stat;
}
public String getImages() {
if (StatSummarizer.isDisabled())
return "";
try {
List<SummaryListener> listeners = StatSummarizer.instance().getListeners();
TreeSet<SummaryListener> ordered = new TreeSet<SummaryListener>(new AlphaComparator());
ordered.addAll(listeners);
// go to some trouble to see if we have the data for the combined bw graph
boolean hasTx = false;
boolean hasRx = false;
for (SummaryListener lsnr : ordered) {
String title = lsnr.getRate().getRateStat().getName();
if (title.equals("bw.sendRate")) hasTx = true;
else if (title.equals("bw.recvRate")) hasRx = true;
}
if (hasTx && hasRx && !_showEvents) {
_out.write("<a href=\"graph?stat=bw.combined"
+ "&c=" + (3 * _periodCount )
+ "&w=" + (3 * _width)
+ "&h=" + (3 * _height)
+ "\">");
String title = _t("Combined bandwidth graph");
_out.write("<img class=\"statimage\""
+ " src=\"viewstat.jsp?stat=bw.combined"
+ "&periodCount=" + _periodCount
+ "&width=" + _width
+ "&height=" + (_height - 13)
+ "\" alt=\"" + title + "\" title=\"" + title + "\"></a>\n");
}
for (SummaryListener lsnr : ordered) {
Rate r = lsnr.getRate();
// e.g. "statname for 60m"
String title = _t("{0} for {1}", r.getRateStat().getName(), DataHelper.formatDuration2(_periodCount * r.getPeriod()));
_out.write("<a href=\"graph?stat="
+ r.getRateStat().getName()
+ '.' + r.getPeriod()
+ "&c=" + (3 * _periodCount)
+ "&w=" + (3 * _width)
+ "&h=" + (3 * _height)
+ (_showEvents ? "&showEvents=1" : "")
+ "\">");
_out.write("<img class=\"statimage\" border=\"0\""
+ " src=\"viewstat.jsp?stat="
+ r.getRateStat().getName()
+ "&showEvents=" + _showEvents
+ "&period=" + r.getPeriod()
+ "&periodCount=" + _periodCount
+ "&width=" + _width
+ "&height=" + _height
+ "\" alt=\"" + title
+ "\" title=\"" + title + "\"></a>\n");
}
// FIXME jrobin doesn't support setting the timezone, will have to mod TimeAxis.java
// 0.9.1 - all graphs currently state UTC on them, so this text blurb is unnecessary,
//_out.write("<p><i>" + _t("All times are UTC.") + "</i></p>\n");
} catch (IOException ioe) {
ioe.printStackTrace();
}
return "";
}
/**
* For single stat page;
* stat = "bw.combined" treated specially
*
* @since 0.9
*/
public String getSingleStat() {
try {
if (StatSummarizer.isDisabled())
return "";
if (_stat == null) {
_out.write("No stat specified");
return "";
}
long period;
String name, displayName;
if (_stat.equals("bw.combined")) {
period = 60000;
name = _stat;
displayName = _t("Bandwidth usage");
} else {
Set<Rate> rates = StatSummarizer.instance().parseSpecs(_stat);
if (rates.size() != 1) {
_out.write("Graphs not enabled for " + _stat);
return "";
}
Rate r = rates.iterator().next();
period = r.getPeriod();
name = r.getRateStat().getName();
displayName = name;
}
_out.write("<h3>");
_out.write(_t("{0} for {1}", displayName, DataHelper.formatDuration2(_periodCount * period)));
if (_end > 0)
_out.write(' ' + _t("ending {0} ago", DataHelper.formatDuration2(_end * period)));
_out.write("</h3><img class=\"statimage\" border=\"0\""
+ " src=\"viewstat.jsp?stat="
+ name
+ "&showEvents=" + _showEvents
+ "&period=" + period
+ "&periodCount=" + _periodCount
+ "&end=" + _end
+ "&width=" + _width
+ "&height=" + _height
+ "\"><p>\n");
if (_width < MAX_X && _height < MAX_Y) {
_out.write(link(_stat, _showEvents, _periodCount, _end, _width * 3 / 2, _height * 3 / 2));
_out.write(_t("Larger"));
_out.write("</a> - ");
}
if (_width > MIN_X && _height > MIN_Y) {
_out.write(link(_stat, _showEvents, _periodCount, _end, _width * 2 / 3, _height * 2 / 3));
_out.write(_t("Smaller"));
_out.write("</a> - ");
}
if (_height < MAX_Y) {
_out.write(link(_stat, _showEvents, _periodCount, _end, _width, _height * 3 / 2));
_out.write(_t("Taller"));
_out.write("</a> - ");
}
if (_height > MIN_Y) {
_out.write(link(_stat, _showEvents, _periodCount, _end, _width, _height * 2 / 3));
_out.write(_t("Shorter"));
_out.write("</a> - ");
}
if (_width < MAX_X) {
_out.write(link(_stat, _showEvents, _periodCount, _end, _width * 3 / 2, _height));
_out.write(_t("Wider"));
_out.write("</a> - ");
}
if (_width > MIN_X) {
_out.write(link(_stat, _showEvents, _periodCount, _end, _width * 2 / 3, _height));
_out.write(_t("Narrower"));
_out.write("</a>");
}
_out.write("<br>");
if (_periodCount < MAX_C) {
_out.write(link(_stat, _showEvents, _periodCount * 2, _end, _width, _height));
_out.write(_t("Larger interval"));
_out.write("</a> - ");
}
if (_periodCount > MIN_C) {
_out.write(link(_stat, _showEvents, _periodCount / 2, _end, _width, _height));
_out.write(_t("Smaller interval"));
_out.write("</a>");
}
_out.write("<br>");
if (_periodCount < MAX_C) {
_out.write(link(_stat, _showEvents, _periodCount, _end + _periodCount, _width, _height));
_out.write(_t("Previous interval"));
_out.write("</a>");
}
if (_end > 0) {
int end = _end - _periodCount;
if (end <= 0)
end = 0;
if (_periodCount < MAX_C)
_out.write(" - ");
_out.write(link(_stat, _showEvents, _periodCount, end, _width, _height));
_out.write(_t("Next interval"));
_out.write("</a> ");
}
_out.write("<br>");
_out.write(link(_stat, !_showEvents, _periodCount, _end, _width, _height));
if (!_stat.equals("bw.combined"))
_out.write(_showEvents ? _t("Plot averages") : _t("plot events"));
_out.write("</a>");
_out.write("</p><p><i>" + _t("All times are UTC.") + "</i></p>\n");
} catch (IOException ioe) {
ioe.printStackTrace();
}
return "";
}
/** @since 0.9 */
private static String link(String stat, boolean showEvents,
int periodCount, int end,
int width, int height) {
return
"<a href=\"graph?stat="
+ stat
+ "&c=" + periodCount
+ "&w=" + width
+ "&h=" + height
+ (end > 0 ? "&e=" + end : "")
+ (showEvents ? "&showEvents=1" : "")
+ "\">";
}
private static final int[] times = { 60, 2*60, 5*60, 10*60, 30*60, 60*60, -1 };
public String getForm() {
if (StatSummarizer.isDisabled())
return "";
// too hard to use the standard formhandler.jsi / FormHandler.java session nonces
// since graphs.jsp needs the refresh value in its <head>.
// So just use the "shared/console nonce".
String nonce = CSSHelper.getNonce();
try {
_out.write("<br><h3>" + _t("Configure Graph Display") + " [<a href=\"configstats\">" + _t("Select Stats") + "</a>]</h3>");
_out.write("<form action=\"graphs\" method=\"POST\">\n" +
"<input type=\"hidden\" name=\"action\" value=\"save\">\n" +
"<input type=\"hidden\" name=\"nonce\" value=\"" + nonce + "\" >\n");
_out.write(_t("Periods") + ": <input size=\"5\" style=\"text-align: right;\" type=\"text\" name=\"periodCount\" value=\"" + _periodCount + "\"><br>\n");
_out.write(_t("Plot averages") + ": <input type=\"radio\" class=\"optbox\" name=\"showEvents\" value=\"false\" " + (_showEvents ? "" : HelperBase.CHECKED) + "> ");
_out.write(_t("or")+ " " +_t("plot events") + ": <input type=\"radio\" class=\"optbox\" name=\"showEvents\" value=\"true\" "+ (_showEvents ? HelperBase.CHECKED : "") + "><br>\n");
_out.write(_t("Image sizes") + ": " + _t("width") + ": <input size=\"4\" style=\"text-align: right;\" type=\"text\" name=\"width\" value=\"" + _width
+ "\"> " + _t("pixels") + ", " + _t("height") + ": <input size=\"4\" style=\"text-align: right;\" type=\"text\" name=\"height\" value=\"" + _height
+ "\"> " + _t("pixels") + "<br>\n");
_out.write(_t("Refresh delay") + ": <select name=\"refreshDelay\">");
for (int i = 0; i < times.length; i++) {
_out.write("<option value=\"");
_out.write(Integer.toString(times[i]));
_out.write("\"");
if (times[i] == _refreshDelaySeconds)
_out.write(" selected=\"selected\"");
_out.write(">");
if (times[i] > 0)
_out.write(DataHelper.formatDuration2(times[i] * 1000));
else
_out.write(_t("Never"));
_out.write("</option>\n");
}
_out.write("</select><br>\n" +
_t("Store graph data on disk?") +
" <input type=\"checkbox\" class=\"optbox\" value=\"true\" name=\"persistent\"");
boolean persistent = _context.getBooleanPropertyDefaultTrue(SummaryListener.PROP_PERSISTENT);
if (persistent)
_out.write(HelperBase.CHECKED);
_out.write(">" +
"<hr><div class=\"formaction\"><input type=\"submit\" class=\"accept\" value=\"" + _t("Save settings and redraw graphs") + "\"></div></form>");
} catch (IOException ioe) {
ioe.printStackTrace();
}
return "";
}
/**
* We have to do this here because processForm() isn't called unless the nonces are good
* @since 0.8.7
*/
@Override
public String getAllMessages() {
if (StatSummarizer.isDisabled()) {
addFormError("Graphing not supported with this JVM: " +
System.getProperty("java.vendor") + ' ' +
System.getProperty("java.version") + " (" +
System.getProperty("java.runtime.name") + ' ' +
System.getProperty("java.runtime.version") + ')');
if (_context.getProperty(PROP_REFRESH, 0) >= 0) {
// force no refresh, save silently
_context.router().saveConfig(PROP_REFRESH, "-1");
}
}
return super.getAllMessages();
}
/**
* This was a HelperBase but now it's a FormHandler
* @since 0.8.2
*/
@Override
protected void processForm() {
if ("save".equals(_action))
saveSettings();
}
/**
* Silently save settings if changed, no indication of success or failure
* @since 0.7.10
*/
private void saveSettings() {
if (_width != _context.getProperty(PROP_X, DEFAULT_X) ||
_height != _context.getProperty(PROP_Y, DEFAULT_Y) ||
_periodCount != _context.getProperty(PROP_PERIODS, DEFAULT_PERIODS) ||
_refreshDelaySeconds != _context.getProperty(PROP_REFRESH, DEFAULT_REFRESH) ||
_showEvents != _context.getBooleanProperty(PROP_EVENTS) ||
_persistent != _context.getBooleanPropertyDefaultTrue(SummaryListener.PROP_PERSISTENT)) {
Map<String, String> changes = new HashMap<String, String>();
changes.put(PROP_X, "" + _width);
changes.put(PROP_Y, "" + _height);
changes.put(PROP_PERIODS, "" + _periodCount);
changes.put(PROP_REFRESH, "" + _refreshDelaySeconds);
changes.put(PROP_EVENTS, "" + _showEvents);
changes.put(SummaryListener.PROP_PERSISTENT, "" + _persistent);
_context.router().saveConfig(changes, null);
addFormNotice(_t("Graph settings saved"));
}
}
private static class AlphaComparator implements Comparator<SummaryListener>, Serializable {
public int compare(SummaryListener l, SummaryListener r) {
String lName = l.getRate().getRateStat().getName();
String rName = r.getRate().getRateStat().getName();
int rv = lName.compareTo(rName);
if (rv != 0)
return rv;
return (int) (l.getRate().getPeriod() - r.getRate().getPeriod());
}
}
}