Package io.prometheus.client
Class SimpleTimer
- java.lang.Object
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- io.prometheus.client.SimpleTimer
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public class SimpleTimer extends Object
SimpleTimer, to measure elapsed duration in seconds as a double.This is a helper class intended to measure latencies and encapsulate the conversion to seconds without losing precision.
Keep in mind that preferred approaches avoid using this mechanism if possible, since latency metrics broken out by outcome should be minimized;
Summary.startTimer()
andHistogram.startTimer()
are preferred. Consider moving outcome labels to a separate metric like a counter.Example usage:
class YourClass { static final Summary requestLatency = Summary.build() .name("requests_latency_seconds") .help("Request latency in seconds.") .labelNames("aLabel") .register(); void processRequest(Request req) { SimpleTimer requestTimer = new SimpleTimer(); try { // Your code here. } finally { requestLatency.labels("aLabelValue").observe(requestTimer.elapsedSeconds()); } } }
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Constructor Summary
Constructors Constructor Description SimpleTimer()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description double
elapsedSeconds()
static double
elapsedSecondsFromNanos(long startNanos, long endNanos)
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Constructor Detail
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SimpleTimer
public SimpleTimer()
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Method Detail
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elapsedSeconds
public double elapsedSeconds()
- Returns:
- Measured duration in seconds since
SimpleTimer
was constructed.
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elapsedSecondsFromNanos
public static double elapsedSecondsFromNanos(long startNanos, long endNanos)
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