Package io.prometheus.client
Class Histogram.Child
- java.lang.Object
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- io.prometheus.client.Histogram.Child
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- Enclosing class:
- Histogram
public static class Histogram.Child extends java.lang.Object
The value of a single Histogram.Warning: References to a Child become invalid after using
SimpleCollector.remove(java.lang.String...)
orSimpleCollector.clear()
.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
Histogram.Child.Value
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Field Summary
Fields Modifier and Type Field Description private DoubleAdder[]
cumulativeCounts
private DoubleAdder
sum
private double[]
upperBounds
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Constructor Summary
Constructors Modifier Constructor Description private
Child(double[] buckets)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Histogram.Child.Value
get()
Get the value of the Histogram.void
observe(double amt)
Observe the given amount.Histogram.Timer
startTimer()
Start a timer to track a duration.double
time(java.lang.Runnable timeable)
Executes runnable code (e.g.<E> E
time(java.util.concurrent.Callable<E> timeable)
Executes callable code (e.g.
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Field Detail
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upperBounds
private final double[] upperBounds
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cumulativeCounts
private final DoubleAdder[] cumulativeCounts
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sum
private final DoubleAdder sum
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Method Detail
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time
public double time(java.lang.Runnable timeable)
Executes runnable code (e.g. a Java 8 Lambda) and observes a duration of how long it took to run.- Parameters:
timeable
- Code that is being timed- Returns:
- Measured duration in seconds for timeable to complete.
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time
public <E> E time(java.util.concurrent.Callable<E> timeable)
Executes callable code (e.g. a Java 8 Lambda) and observes a duration of how long it took to run.- Parameters:
timeable
- Code that is being timed- Returns:
- Result returned by callable.
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observe
public void observe(double amt)
Observe the given amount.
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startTimer
public Histogram.Timer startTimer()
Start a timer to track a duration.Call
Histogram.Timer.observeDuration()
at the end of what you want to measure the duration of.
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get
public Histogram.Child.Value get()
Get the value of the Histogram.Warning: The definition of
Histogram.Child.Value
is subject to change.
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