/** {@inheritDoc} */
public final CounterSample getCounterSample(String name) {
Simon s = manager.getSimon(name);
if (s != null && s instanceof Counter) {
return new CounterSample((org.javasimon.CounterSample) s.sample());
}
return null;
}
/** {@inheritDoc} */
public final StopwatchSample getStopwatchSampleAndReset(String name) {
Simon s = manager.getSimon(name);
if (s != null && s instanceof Stopwatch) {
return new StopwatchSample((org.javasimon.StopwatchSample) s.sampleAndReset());
}
return null;
}
/**
* Generates Google bar chart URL for last values of all collected Simons.
*
* @param collector data collector
* @param title chart title
* @param divisor value divisor. For example: if values are in ns and ms are required, divisor
* should be set to 1000000.
* @param unit unit shown after values under every bar
* @return URL generating the bar chart
*/
public static String barChart(
AbstractDataCollector collector, String title, double divisor, String unit) {
final StringBuilder result = new StringBuilder(URL_START).append(TYPE_BAR);
result.append("&chtt=").append(encode(title));
final StringBuilder x0 = new StringBuilder("&chxl=0:");
final StringBuilder x1 = new StringBuilder("|1:");
final StringBuilder data = new StringBuilder("&chd=t:");
double max = 0;
boolean first = true;
for (final Simon simon : collector.getSimons()) {
if (first) {
first = false;
} else {
data.append(',');
}
final List<Double> values = collector.valuesFor(simon);
double lastValue = values.get(values.size() - 1) / divisor;
x0.append('|').append(encode(simon.getName()));
String formattedValue = NUMBER_FORMAT.format(lastValue);
x1.append('|').append(formattedValue).append("+").append(unit);
if (lastValue > max) {
max = lastValue;
}
data.append(formattedValue);
}
double division = Math.pow(TEN_BASE, Math.floor(Math.log10(max)));
StringBuilder x2 = new StringBuilder("|2:");
double x = 0;
for (; x < max + division; x += division) {
x2.append('|').append(Double.valueOf(x).longValue());
}
result.append("&chxr=2,0,").append(Double.valueOf(x - division).longValue());
result.append("&chds=0,").append(Double.valueOf(x - division).longValue());
result.append(x0).append(x1).append(x2).append(data);
result.append("&.png");
return result.toString();
}
/**
* Visit Simons recursively as a tree starting from the specified Simon.
*
* @param simon Parent simon
* @param visitor Visitor
* @throws IOException
*/
public static void visitTree(Simon simon, SimonVisitor visitor) throws IOException {
visitor.visit(simon);
for (Simon childSimon : simon.getChildren()) {
visitTree(childSimon, visitor);
}
}