io.smallrye.mutiny.subscription

Enum BackPressureStrategy

java.lang.Object

java.lang.Enum<BackPressureStrategy>

io.smallrye.mutiny.subscription.BackPressureStrategy

All Implemented Interfaces:

Serializable, Comparable<BackPressureStrategy>

public enum BackPressureStrategy
extends Enum<BackPressureStrategy>

The back pressure strategies.

Enum Constant Summary

Enum Constants

Enum Constant and Description
BUFFER Buffer the events.
DROP Drop the incoming item events if the downstream is not ready to receive it.
ERROR Fire a failure with a BackPressureFailure when the downstream can't keep up
IGNORE Ignore downstream back-pressure requests.
LATEST Drop the oldest item events from the buffer so the downstream will get only the latest items from upstream.

Method Summary

Modifier and Type	Method and Description
static BackPressureStrategy	valueOf(String name) Returns the enum constant of this type with the specified name.
static BackPressureStrategy[]	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

BUFFER

public static final BackPressureStrategy BUFFER

Buffer the events. While being generally the default, be aware that this strategy may cause OutOfMemoryError as it uses unbounded buffer.

DROP

public static final BackPressureStrategy DROP

Drop the incoming item events if the downstream is not ready to receive it.

ERROR

public static final BackPressureStrategy ERROR

Fire a failure with a BackPressureFailure when the downstream can't keep up

IGNORE

public static final BackPressureStrategy IGNORE

Ignore downstream back-pressure requests. Basically it pushes items downstream as they come.

This may cause an BackPressureFailure to be fired when queues get full downstream.

LATEST

public static final BackPressureStrategy LATEST

Drop the oldest item events from the buffer so the downstream will get only the latest items from upstream.

Method Detail

values

public static BackPressureStrategy[] 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 (BackPressureStrategy c : BackPressureStrategy.values())
    System.out.println(c);

Returns:

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

valueOf

public static BackPressureStrategy 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