io.debezium.util

Interface DelayStrategy

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface DelayStrategy

Encapsulates the logic of determining a delay when some criteria is met.

Author:

Randall Hauch

Method Summary

Modifier and Type	Method and Description
static DelayStrategy	constant(long delayInMilliseconds) Create a delay strategy that applies a constant delay as long as the criteria is met.
static DelayStrategy	exponential(long initialDelayInMilliseconds, long maxDelayInMilliseconds) Create a delay strategy that applies an exponentially-increasing delay as long as the criteria is met.
static DelayStrategy	exponential(long initialDelayInMilliseconds, long maxDelayInMilliseconds, double backOffMultiplier) Create a delay strategy that applies an exponentially-increasing delay as long as the criteria is met.
static DelayStrategy	linear(long delayInMilliseconds) Create a delay strategy that applies an linearly-increasing delay as long as the criteria is met.
static DelayStrategy	none() Create a delay strategy that never delays.
boolean	sleepWhen(boolean criteria) Attempt to sleep when the specified criteria is met.
default boolean	sleepWhen(BooleanSupplier criteria) Attempt to sleep when the specified criteria is met.

Method Detail

sleepWhen

default boolean sleepWhen(BooleanSupplier criteria)

Attempt to sleep when the specified criteria is met.

Parameters:

criteria - true if this method should sleep, or false if there is no need to sleep

Returns:

true if this invocation caused the thread to sleep, or false if this method did not sleep

sleepWhen

boolean sleepWhen(boolean criteria)

Attempt to sleep when the specified criteria is met.

Parameters:

criteria - true if this method should sleep, or false if there is no need to sleep

Returns:

true if this invocation caused the thread to sleep, or false if this method did not sleep

none

static DelayStrategy none()

Create a delay strategy that never delays.

Returns:

the strategy; never null

constant

static DelayStrategy constant(long delayInMilliseconds)

Create a delay strategy that applies a constant delay as long as the criteria is met. As soon as the criteria is not met, the delay resets to zero.

Parameters:

delayInMilliseconds - the initial delay; must be positive

Returns:

the strategy; never null

linear

static DelayStrategy linear(long delayInMilliseconds)

Create a delay strategy that applies an linearly-increasing delay as long as the criteria is met. As soon as the criteria is not met, the delay resets to zero.

Parameters:

delayInMilliseconds - the initial delay; must be positive

Returns:

the strategy; never null

exponential

static DelayStrategy exponential(long initialDelayInMilliseconds,
                                 long maxDelayInMilliseconds)

Create a delay strategy that applies an exponentially-increasing delay as long as the criteria is met. As soon as the criteria is not met, the delay resets to zero.

Parameters:

initialDelayInMilliseconds - the initial delay; must be positive

maxDelayInMilliseconds - the maximum delay; must be greater than the initial delay

Returns:

the strategy; never null

exponential

static DelayStrategy exponential(long initialDelayInMilliseconds,
                                 long maxDelayInMilliseconds,
                                 double backOffMultiplier)

Create a delay strategy that applies an exponentially-increasing delay as long as the criteria is met. As soon as the criteria is not met, the delay resets to zero.

Parameters:

initialDelayInMilliseconds - the initial delay; must be positive

maxDelayInMilliseconds - the maximum delay; must be greater than the initial delay

backOffMultiplier - the factor by which the delay increases each pass

Returns:

the strategy