Nested and Inner Type Summary

Modifier and Type	Class and Description
public static interface	Retry.AdvancedRunnable Runnable, which provides some additional info (iteration for now)
public static interface	Retry.Supplier<T> Needed here because: - java.util.function.Supplier defined from Java 8 - Adds some additional info (current iteration)
public static interface	Retry.ThrowableCallback Needed here because: - java.util.function.BiConsumer defined from Java 8 - Adds some additional info (current iteration and called throwable

Constructor Summary

Access	Constructor and Description
public	Retry()

Method Summary

Modifier and Type	Method and Description
public static <T> T	Returns: Value generated by the `supplier`. call(Retry.Supplier<T> supplier, int Total number of attempts to execute the `runnable` attemptsCount, long intervalMillis) Runs the given `runnable` at most `attemptsCount` times until it passes, leaving `intervalMillis` milliseconds between the invocations.
private static int	computeBackoffInterval(int base, int iteration)
private static int	computeIterationBase(int base, int iteration)
public static int	Returns: Index of the first successful invocation, starting from 0. execute(Runnable runnable, int Total number of attempts to execute the `runnable` attemptsCount, long intervalMillis) Runs the given `runnable` at most `attemptsCount` times until it passes, leaving `intervalMillis` milliseconds between the invocations.
public static int	Returns: Index of the first successful invocation, starting from 0. executeWithBackoff(Retry.AdvancedRunnable runnable, int Total number of attempts to execute the `runnable` attemptsCount, int base for the exponential backoff + jitter intervalBaseMillis) Runs the given `runnable` at most `attemptsCount` times until it passes, leaving some increasing random delay milliseconds between the invocations.
public static int	executeWithBackoff(Retry.AdvancedRunnable runnable, Retry.ThrowableCallback throwableCallback, int attemptsCount, int intervalBaseMillis)
public static int	executeWithBackoff(Retry.AdvancedRunnable runnable, Duration timeout, int intervalBaseMillis)
public static int	executeWithBackoff(Retry.AdvancedRunnable runnable, Retry.ThrowableCallback throwableCallback, Duration timeout, int intervalBaseMillis)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Constructor Detail

Retry	back to summary
public Retry()

Method Detail

call back to summary

call	back to summary
public static <T> T call(Retry.Supplier<T> supplier, int attemptsCount, long intervalMillis) Runs the given `runnable` at most `attemptsCount` times until it passes, leaving `intervalMillis` milliseconds between the invocations. The runnable is reexecuted if it throws a `RuntimeException` or `AssertionError`. Parameters attemptsCount:int Total number of attempts to execute the `runnable` Returns:T Value generated by the `supplier`.

public static <T> T call(Retry.Supplier<T> supplier, int attemptsCount, long intervalMillis)

Runs the given runnable at most attemptsCount times until it passes, leaving intervalMillis milliseconds between the invocations. The runnable is reexecuted if it throws a RuntimeException or AssertionError.

Parameters

attemptsCount:int: Total number of attempts to execute the runnable

Returns:T

Value generated by the supplier.

computeBackoffInterval	back to summary
private static int computeBackoffInterval(int base, int iteration)

computeIterationBase	back to summary
private static int computeIterationBase(int base, int iteration)

execute back to summary

execute	back to summary
public static int execute(Runnable runnable, int attemptsCount, long intervalMillis) Runs the given `runnable` at most `attemptsCount` times until it passes, leaving `intervalMillis` milliseconds between the invocations. The runnable is reexecuted if it throws a `RuntimeException` or `AssertionError`. Parameters attemptsCount:int Total number of attempts to execute the `runnable` Returns:int Index of the first successful invocation, starting from 0.

public static int execute(Runnable runnable, int attemptsCount, long intervalMillis)

Parameters

attemptsCount:int: Total number of attempts to execute the runnable

Returns:int

Index of the first successful invocation, starting from 0.

executeWithBackoff back to summary

executeWithBackoff	back to summary
public static int executeWithBackoff(Retry.AdvancedRunnable runnable, int attemptsCount, int intervalBaseMillis) Runs the given `runnable` at most `attemptsCount` times until it passes, leaving some increasing random delay milliseconds between the invocations. It uses Exponential backoff + jitter algorithm to compute the delay. More details https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/ The base for delay is specified by `intervalBaseMillis` number. The runnable is reexecuted if it throws a `RuntimeException` or `AssertionError`. Parameters attemptsCount:int Total number of attempts to execute the `runnable` intervalBaseMillis:int base for the exponential backoff + jitter Returns:int Index of the first successful invocation, starting from 0.

public static int executeWithBackoff(Retry.AdvancedRunnable runnable, int attemptsCount, int intervalBaseMillis)

Runs the given runnable at most attemptsCount times until it passes, leaving some increasing random delay milliseconds between the invocations. It uses Exponential backoff + jitter algorithm to compute the delay. More details https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/ The base for delay is specified by intervalBaseMillis number. The runnable is reexecuted if it throws a RuntimeException or AssertionError.

Parameters

attemptsCount:int: Total number of attempts to execute the runnable
intervalBaseMillis:int: base for the exponential backoff + jitter

Returns:int

Index of the first successful invocation, starting from 0.

executeWithBackoff	back to summary
public static int executeWithBackoff(Retry.AdvancedRunnable runnable, Retry.ThrowableCallback throwableCallback, int attemptsCount, int intervalBaseMillis)

executeWithBackoff	back to summary
public static int executeWithBackoff(Retry.AdvancedRunnable runnable, Duration timeout, int intervalBaseMillis)

executeWithBackoff	back to summary
public static int executeWithBackoff(Retry.AdvancedRunnable runnable, Retry.ThrowableCallback throwableCallback, Duration timeout, int intervalBaseMillis)

org.keycloak.common.util back to summary

public Interface Retry.AdvancedRunnable

Runnable, which provides some additional info (iteration for now)

Method Summary

Modifier and Type	Method and Description
public void	run(int iteration)

Method Detail

run	back to summary
public void run(int iteration)

org.keycloak.common.util back to summary

public Interface Retry.Supplier<T>

Needed here because: - java.util.function.Supplier defined from Java 8 - Adds some additional info (current iteration)

Method Summary

Modifier and Type	Method and Description
public T	Returns: a result get(int iteration) Gets a result.

Method Detail

get	back to summary
public T get(int iteration) Gets a result. Returns:T a result

get

back to summary

public T get(int iteration)

Gets a result.

Returns:T: a result

org.keycloak.common.util back to summary

public Interface Retry.ThrowableCallback

Needed here because: - java.util.function.BiConsumer defined from Java 8 - Adds some additional info (current iteration and called throwable

Method Summary

Modifier and Type	Method and Description
public void	handleThrowable(int iteration, Throwable t)

Method Detail

handleThrowable	back to summary
public void handleThrowable(int iteration, Throwable t)

public Class Retry

Nested and Inner Type Summary

Constructor Summary

Method Summary

Constructor Detail

Method Detail

public Interface Retry.AdvancedRunnable

Method Summary

Method Detail

public Interface Retry.Supplier<T>

Method Summary

Method Detail

public Interface Retry.ThrowableCallback

Method Summary

Method Detail