ValueStats (DataKernel: Event Loop 2.5.13 API)

java.lang.Object
- io.datakernel.jmx.ValueStats

All Implemented Interfaces:

JmxRefreshable, JmxRefreshableStats<ValueStats>, JmxStats<ValueStats>, JmxStatsWithReset, JmxStatsWithSmoothingWindow
```
public final class ValueStats
extends Object
implements JmxRefreshableStats<ValueStats>, JmxStatsWithReset, JmxStatsWithSmoothingWindow
```
Counts added values and computes dynamic average using exponential smoothing algorithm
Class is supposed to work in single thread

Field Summary

Fields
Modifier and Type	Field and Description
`static int[]`	`POWERS_OF_TEN`
`static int[]`	`POWERS_OF_TEN_SEMI_LINEAR`
`static int[]`	`POWERS_OF_TEN_SEMI_LINEAR_1000`
`static int[]`	`POWERS_OF_TEN_SHORTENED`
`static int[]`	`POWERS_OF_TWO`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(ValueStats anotherStats)`
`static ValueStats`	`create(Duration smoothingWindow)` Creates new ValueStats with specified smoothing window
`static ValueStats`	`createAccumulator()`
`String`	`get()`
`double`	`getAbsoluteMax()` Returns maximum of all added values
`double`	`getAbsosuteMin()` Returns minimum of all added values
`double`	`getAverage()`
`long`	`getCount()`
`List<String>`	`getHistogram()`
`double`	`getLastValue()` Returns last added value
`double`	`getSmoothedAverage()` Returns smoothed average of added values
`double`	`getSmoothedMax()` Returns smoothed maximum of all added values
`double`	`getSmoothedMin()` Returns smoothed minimum of all added values
`double`	`getSmoothedRate()`
`double`	`getSmoothedStandardDeviation()` Returns smoothed standard deviation
`Duration`	`getSmoothingWindow()`
`void`	`recordValue(double value)`
`void`	`recordValue(int value)` Adds value
`void`	`refresh(long timestamp)`
`void`	`resetStats()` Resets stats and sets new parameters
`void`	`setHistogramLevels(int[] levels)`
`void`	`setSmoothingWindow(Duration smoothingWindow)`
`String`	`toString()`
`ValueStats`	`withAbsoluteValues(boolean value)`
`ValueStats`	`withAverageAndDeviation(boolean value)`
`ValueStats`	`withHistogram(int[] levels)`
`ValueStats`	`withLastValue(boolean value)`
`ValueStats`	`withMinMax(boolean value)`
`ValueStats`	`withPrecision(int precision)`
`ValueStats`	`withRate()`
`ValueStats`	`withRate(String rateUnit)`
`ValueStats`	`withScientificNotation()`
`ValueStats`	`withUnit(String unit)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

POWERS_OF_TWO

public static final int[] POWERS_OF_TWO

POWERS_OF_TEN

public static final int[] POWERS_OF_TEN

POWERS_OF_TEN_SHORTENED

public static final int[] POWERS_OF_TEN_SHORTENED

POWERS_OF_TEN_SEMI_LINEAR

public static final int[] POWERS_OF_TEN_SEMI_LINEAR

POWERS_OF_TEN_SEMI_LINEAR_1000

public static final int[] POWERS_OF_TEN_SEMI_LINEAR_1000

Method Detail
- createAccumulator
```
public static ValueStats createAccumulator()
```
- create
```
public static ValueStats create(Duration smoothingWindow)
```
  Creates new ValueStats with specified smoothing window
  
  Parameters:
  
  smoothingWindow - in seconds
- withUnit
```
public ValueStats withUnit(String unit)
```
- withRate
```
public ValueStats withRate(String rateUnit)
```
- withRate
```
public ValueStats withRate()
```
- withHistogram
```
public ValueStats withHistogram(int[] levels)
```
- withAbsoluteValues
```
public ValueStats withAbsoluteValues(boolean value)
```
- withAverageAndDeviation
```
public ValueStats withAverageAndDeviation(boolean value)
```
- withMinMax
```
public ValueStats withMinMax(boolean value)
```
- withLastValue
```
public ValueStats withLastValue(boolean value)
```
- withPrecision
```
public ValueStats withPrecision(int precision)
```
- withScientificNotation
```
public ValueStats withScientificNotation()
```
- setHistogramLevels
```
public void setHistogramLevels(int[] levels)
```
- resetStats
```
public void resetStats()
```
  Resets stats and sets new parameters
  
  Specified by:
  
  resetStats in interface JmxStatsWithReset
- recordValue
```
public void recordValue(int value)
```
  Adds value
- recordValue
```
public void recordValue(double value)
```
- refresh
```
public void refresh(long timestamp)
```
  Specified by:
  
  refresh in interface JmxRefreshable
- add
```
public void add(ValueStats anotherStats)
```
  Specified by:
  
  add in interface JmxStats<ValueStats>
- getLastValue
```
public double getLastValue()
```
  Returns last added value
  
  Returns:
  
  last added value
- getSmoothedAverage
```
public double getSmoothedAverage()
```
  Returns smoothed average of added values
  
  Returns:
  
  smoothed average of added values
- getSmoothedStandardDeviation
```
public double getSmoothedStandardDeviation()
```
  Returns smoothed standard deviation
  
  Returns:
  
  smoothed standard deviation
- getSmoothedMin
```
public double getSmoothedMin()
```
  Returns smoothed minimum of all added values
  
  Returns:
  
  smoothed minimum of all added values
- getSmoothedMax
```
public double getSmoothedMax()
```
  Returns smoothed maximum of all added values
  
  Returns:
  
  smoothed maximum of all added values
- getAbsosuteMin
```
public double getAbsosuteMin()
```
  Returns minimum of all added values
  
  Returns:
  
  minimum of all added values
- getAbsoluteMax
```
public double getAbsoluteMax()
```
  Returns maximum of all added values
  
  Returns:
  
  maximum of all added values
- getAverage
```
public double getAverage()
```
- getSmoothedRate
```
public double getSmoothedRate()
```
- getSmoothingWindow
```
public Duration getSmoothingWindow()
```
  Specified by:
  
  getSmoothingWindow in interface JmxStatsWithSmoothingWindow
- setSmoothingWindow
```
public void setSmoothingWindow(Duration smoothingWindow)
```
  Specified by:
  
  setSmoothingWindow in interface JmxStatsWithSmoothingWindow
- getCount
```
public long getCount()
```
- getHistogram
```
public List<String> getHistogram()
```
- get
```
public String get()
```
- toString
```
public String toString()
```
  Overrides:
  
  toString in class Object

Class ValueStats

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

POWERS_OF_TWO

POWERS_OF_TEN

POWERS_OF_TEN_SHORTENED

POWERS_OF_TEN_SEMI_LINEAR

POWERS_OF_TEN_SEMI_LINEAR_1000

Method Detail

createAccumulator

create

withUnit

withRate

withRate

withHistogram

withAbsoluteValues

withAverageAndDeviation

withMinMax

withLastValue

withPrecision

withScientificNotation

setHistogramLevels

resetStats

recordValue

recordValue

refresh

add

getLastValue

getSmoothedAverage

getSmoothedStandardDeviation

getSmoothedMin

getSmoothedMax

getAbsosuteMin

getAbsoluteMax

getAverage

getSmoothedRate

getSmoothingWindow

setSmoothingWindow

getCount

getHistogram

get

toString