io.sermant.flowcontrol.res4j.windows

Enum WindowsArray

java.lang.Object

java.lang.Enum<WindowsArray>

io.sermant.flowcontrol.res4j.windows.WindowsArray

All Implemented Interfaces:

Serializable, Comparable<WindowsArray>

public enum WindowsArray
extends Enum<WindowsArray>

sliding window

Since:

2022-12-07

Author:

xuezechao1

Enum Constant Summary

Enum Constants

Enum Constant and Description
INSTANCE singleton

Method Summary

Modifier and Type	Method and Description
void	addRt(long startTime, long responseTime) increase response time
void	addSuccess(long startTime) increase success count
void	addThreadNum(long startTime) increase thread count
int	calculateCurrentWindowsIndex() Computes the window index for the current point in time
int	calculateNextWindowsIndex() Calculates the index of the next window at the current point in time
int	calculatePreviousWindowsIndex() Calculates the index of the previous window at the current time
int	calculateWindowsIndex(long startTime) compute window index
void	decreaseThreadNum(long startTime) reduce thread count
io.sermant.flowcontrol.res4j.windows.WindowsBucket	getCurrentWindow() gets the current point in time window
io.sermant.flowcontrol.res4j.windows.WindowsBucket	getPreviousWindow() gets a window before the current point in time
long	getThreadNum() gets the current number of threads
io.sermant.flowcontrol.res4j.windows.WindowsBucket	getWindow(int index) gets the window for the specified index
AtomicReferenceArray<io.sermant.flowcontrol.res4j.windows.WindowsBucket>	getWindowsArray() gets the sliding window array
void	initWindowsArray() initialize
void	resetNextWindows() reset the next window data
static WindowsArray	valueOf(String name) Returns the enum constant of this type with the specified name.
static WindowsArray[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INSTANCE

public static final WindowsArray INSTANCE

singleton

Method Detail

values

public static WindowsArray[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (WindowsArray c : WindowsArray.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static WindowsArray valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

initWindowsArray

public void initWindowsArray()

initialize

getCurrentWindow

public io.sermant.flowcontrol.res4j.windows.WindowsBucket getCurrentWindow()

gets the current point in time window

Returns:

current point in time window

getPreviousWindow

public io.sermant.flowcontrol.res4j.windows.WindowsBucket getPreviousWindow()

gets a window before the current point in time

Returns:

window before the current point in time

getWindow

public io.sermant.flowcontrol.res4j.windows.WindowsBucket getWindow(int index)

gets the window for the specified index

Parameters:

index - index

Returns:

the window for the specified index

getThreadNum

public long getThreadNum()

gets the current number of threads

Returns:

the current number of threads

addSuccess

public void addSuccess(long startTime)

increase success count

Parameters:

startTime - requestTime

addRt

public void addRt(long startTime,
                  long responseTime)

increase response time

Parameters:

startTime - requestTime

responseTime - responseTime

addThreadNum

public void addThreadNum(long startTime)

increase thread count

Parameters:

startTime - requestTime

decreaseThreadNum

public void decreaseThreadNum(long startTime)

reduce thread count

Parameters:

startTime - requestTime

calculateCurrentWindowsIndex

public int calculateCurrentWindowsIndex()

Computes the window index for the current point in time

Returns:

the window index for the current point in time

resetNextWindows

public void resetNextWindows()

reset the next window data

calculateNextWindowsIndex

public int calculateNextWindowsIndex()

Calculates the index of the next window at the current point in time

Returns:

the index of the next window at the current point in time

calculateWindowsIndex

public int calculateWindowsIndex(long startTime)

compute window index

Parameters:

startTime - request time

Returns:

window index

calculatePreviousWindowsIndex

public int calculatePreviousWindowsIndex()

Calculates the index of the previous window at the current time

Returns:

the index of the previous window at the current time

getWindowsArray

public AtomicReferenceArray<io.sermant.flowcontrol.res4j.windows.WindowsBucket> getWindowsArray()

gets the sliding window array

Returns:

the sliding window array