Package io.github.resilience4j.core

Class CompletionStageUtils

java.lang.Object

io.github.resilience4j.core.CompletionStageUtils

public class CompletionStageUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static <T, R> Supplier<CompletionStage<R>>	andThen(Supplier<CompletionStage<T>> completionStageSupplier, BiFunction<T,Throwable,R> handler)	Returns a composed CompletionStage that first applies the CompletionStage and then applies BiFunction after to the result.
static <X extends Throwable, T> CompletionStage<T>	recover(CompletionStage<T> completionStage, Class<X> exceptionType, Function<Throwable,T> exceptionHandler)	Returns a CompletionStage that is recovered from a specific exception.
static <T> CompletionStage<T>	recover(CompletionStage<T> completionStage, Function<Throwable,T> exceptionHandler)	Returns a CompletionStage that is recovered from any exception.
static <T> CompletionStage<T>	recover(CompletionStage<T> completionStage, Predicate<T> resultPredicate, UnaryOperator<T> resultHandler)	Returns a composed CompletionStage that first executes the CompletionStage and optionally recovers from a specific result.
static <T> CompletionStage<T>	recover(CompletionStage<T> completionStage, List<Class<? extends Throwable>> exceptionTypes, Function<Throwable,T> exceptionHandler)	Returns a CompletionStage that is recovered from a specific exception.
static <T, X extends Throwable> Supplier<CompletionStage<T>>	recover(Supplier<CompletionStage<T>> completionStageSupplier, Class<X> exceptionType, Function<Throwable,T> exceptionHandler)	Returns a decorated CompletionStage that is recovered from a specific exception.
static <T> Supplier<CompletionStage<T>>	recover(Supplier<CompletionStage<T>> completionStageSupplier, Function<Throwable,T> exceptionHandler)	Returns a decorated CompletionStage that is recovered from a specific exception.
static <T> Supplier<CompletionStage<T>>	recover(Supplier<CompletionStage<T>> completionStageSupplier, Predicate<T> resultPredicate, UnaryOperator<T> resultHandler)	Returns a composed CompletionStage that first executes the CompletionStage and optionally recovers from a specific result.
static <T> Supplier<CompletionStage<T>>	recover(Supplier<CompletionStage<T>> completionStageSupplier, List<Class<? extends Throwable>> exceptionTypes, Function<Throwable,T> exceptionHandler)	Returns a decorated CompletionStage that is recovered from a specific exception.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

recover

public static <T> CompletionStage<T> recover(CompletionStage<T> completionStage,
 Function<Throwable,T> exceptionHandler)

Returns a CompletionStage that is recovered from any exception.

Parameters:

completionStage - the completionStage which should be recovered from any exception

exceptionHandler - the function applied after callable has failed

Returns:

a CompletionStage that is recovered from any exception.

recover

public static <T> CompletionStage<T> recover(CompletionStage<T> completionStage,
 List<Class<? extends Throwable>> exceptionTypes,
 Function<Throwable,T> exceptionHandler)

Returns a CompletionStage that is recovered from a specific exception.

Parameters:

completionStage - the completionStage which should be recovered from a certain exception

exceptionTypes - the specific exception types that should be recovered

exceptionHandler - the function applied after callable has failed

Returns:

a CompletionStage that is recovered from a specific exception.

recover

public static <X extends Throwable,
T>
CompletionStage<T> recover(CompletionStage<T> completionStage,
 Class<X> exceptionType,
 Function<Throwable,T> exceptionHandler)

Returns a CompletionStage that is recovered from a specific exception.

Parameters:

completionStage - the completionStage which should be recovered from a certain exception

exceptionType - the specific exception type that should be recovered

exceptionHandler - the function applied after callable has failed

Returns:

a CompletionStage that is recovered from a specific exception.

recover

public static <T> Supplier<CompletionStage<T>> recover(Supplier<CompletionStage<T>> completionStageSupplier,
 Function<Throwable,T> exceptionHandler)

Returns a decorated CompletionStage that is recovered from a specific exception.

Parameters:

completionStageSupplier - a supplier of the completionStage which should be recovered from a certain exception

exceptionHandler - the function applied after callable has failed

Returns:

a CompletionStage that is recovered from a specific exception.

recover

public static <T,
X extends Throwable>
Supplier<CompletionStage<T>> recover(Supplier<CompletionStage<T>> completionStageSupplier,
 Class<X> exceptionType,
 Function<Throwable,T> exceptionHandler)

Returns a decorated CompletionStage that is recovered from a specific exception.

Parameters:

completionStageSupplier - a supplier of the completionStage which should be recovered from a certain exception

exceptionType - the specific exception type that should be recovered

exceptionHandler - the function applied after callable has failed

Returns:

a CompletionStage that is recovered from a specific exception.

recover

public static <T> Supplier<CompletionStage<T>> recover(Supplier<CompletionStage<T>> completionStageSupplier,
 List<Class<? extends Throwable>> exceptionTypes,
 Function<Throwable,T> exceptionHandler)

Returns a decorated CompletionStage that is recovered from a specific exception.

Parameters:

completionStageSupplier - a supplier of the completionStage which should be recovered from a certain exception

exceptionTypes - the specific exception types that should be recovered

exceptionHandler - the function applied after callable has failed

Returns:

a CompletionStage that is recovered from a specific exception.

recover

public static <T> CompletionStage<T> recover(CompletionStage<T> completionStage,
 Predicate<T> resultPredicate,
 UnaryOperator<T> resultHandler)

Returns a composed CompletionStage that first executes the CompletionStage and optionally recovers from a specific result.

Type Parameters:

T - return type of after

Parameters:

completionStage - the completionStage which should be recovered from a certain exception

resultPredicate - the result predicate

resultHandler - the result handler

Returns:

a function composed of supplier and exceptionHandler

recover

public static <T> Supplier<CompletionStage<T>> recover(Supplier<CompletionStage<T>> completionStageSupplier,
 Predicate<T> resultPredicate,
 UnaryOperator<T> resultHandler)

Returns a composed CompletionStage that first executes the CompletionStage and optionally recovers from a specific result.

Type Parameters:

T - return type of after

Parameters:

completionStageSupplier - the CompletionStage supplier

resultPredicate - the result predicate

resultHandler - the result handler

Returns:

a function composed of supplier and exceptionHandler

andThen

public static <T,
R> Supplier<CompletionStage<R>> andThen(Supplier<CompletionStage<T>> completionStageSupplier,
 BiFunction<T,Throwable,R> handler)

Returns a composed CompletionStage that first applies the CompletionStage and then applies BiFunction after to the result.

Type Parameters:

T - return type of after

Parameters:

completionStageSupplier - the CompletionStage supplier

handler - the function applied after supplier

Returns:

a function composed of supplier and handler