Package io.github.resilience4j.core

Class SupplierUtils

java.lang.Object

io.github.resilience4j.core.SupplierUtils

public class SupplierUtils
extends Object

Method Summary

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

Methods inherited from class java.lang.Object

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

Method Details

andThen

public static <T,
R> Supplier<R> andThen(Supplier<T> supplier,
 Function<T,R> resultHandler)

Returns a composed Supplier that first applies the Supplier and then applies the resultHandler.

Type Parameters:

T - return type of callable

R - return type of handler

Parameters:

supplier - the supplier

resultHandler - the function applied after supplier

Returns:

a function composed of supplier and resultHandler

andThen

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

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

Type Parameters:

T - return type of after

Parameters:

supplier - the supplier

handler - the function applied after supplier

Returns:

a function composed of supplier and handler

recover

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

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

Type Parameters:

T - return type of after

Parameters:

supplier - the supplier

resultPredicate - the result predicate

resultHandler - the result handler

Returns:

a function composed of supplier and exceptionHandler

recover

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

Returns a composed function that first executes the Supplier and optionally recovers from an exception.

Type Parameters:

T - return type of after

Parameters:

supplier - the supplier

exceptionHandler - the exception handler

Returns:

a function composed of supplier and exceptionHandler

recover

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

Returns a composed function that first executes the Supplier and optionally recovers from an exception.

Type Parameters:

T - return type of after

Parameters:

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

exceptionTypes - the specific exception types that should be recovered

exceptionHandler - the exception handler

Returns:

a function composed of supplier and exceptionHandler

recover

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

Returns a composed function that first executes the Supplier and optionally recovers from an exception.

Type Parameters:

T - return type of after

Parameters:

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

exceptionType - the specific exception type that should be recovered

exceptionHandler - the exception handler

Returns:

a function composed of supplier and exceptionHandler

andThen

public static <T,
R> Supplier<R> andThen(Supplier<T> supplier,
 Function<T,R> resultHandler,
 Function<Throwable,R> exceptionHandler)

Returns a composed function that first applies the Supplier and then applies either the resultHandler or exceptionHandler.

Type Parameters:

T - return type of after

Parameters:

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

resultHandler - the function applied after Supplier was successful

exceptionHandler - the function applied after Supplier has failed

Returns:

a function composed of supplier and handler