com.sap.cloud.sdk.frameworks.resilience4j

Class Resilience4jDecorationStrategy

java.lang.Object

com.sap.cloud.sdk.frameworks.resilience4j.Resilience4jDecorationStrategy

All Implemented Interfaces:

ResilienceDecorationStrategy

public class Resilience4jDecorationStrategy
extends Object
implements ResilienceDecorationStrategy

Configurable implementation of ResilienceDecorationStrategy using Resilience4j.

Field Summary

Fields inherited from interface com.sap.cloud.sdk.cloudplatform.resilience.ResilienceDecorationStrategy

DEFAULT_EXECUTOR_SERVICE, DEFAULT_THREAD_FACTORY, DEFAULT_THREAD_NAME_FORMAT

Constructor Summary

Constructors

Constructor and Description
Resilience4jDecorationStrategy()
Resilience4jDecorationStrategy(GenericDecoratorAsync timeLimiterDecorator, GenericDecorator bulkheadDecorator, GenericDecorator circuitBreakerProvider, GenericDecorator retryProvider, GenericDecorator cachingDecorator)

Method Summary

Modifier and Type	Method and Description
<T> Callable<T>	decorateCallable(Callable<T> callable, ResilienceConfiguration configuration, Function<? super Throwable,T> fallbackFunction) Decorate an instance of a callable function.
<T> Supplier<T>	decorateSupplier(Supplier<T> supplier, ResilienceConfiguration configuration, Function<? super Throwable,T> fallbackFunction) Decorate an instance of a supplier function.
void	invalidateCache(ResilienceConfiguration configuration) Clears the cache associated with the given ResilienceConfiguration if any exists.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sap.cloud.sdk.cloudplatform.resilience.ResilienceDecorationStrategy

decorateCallable, decorateSupplier, executeCallable, executeCallable, executeSupplier, executeSupplier, queueCallable, queueSupplier

Constructor Detail

Resilience4jDecorationStrategy

public Resilience4jDecorationStrategy()

Resilience4jDecorationStrategy

public Resilience4jDecorationStrategy(GenericDecoratorAsync timeLimiterDecorator,
                                      GenericDecorator bulkheadDecorator,
                                      GenericDecorator circuitBreakerProvider,
                                      GenericDecorator retryProvider,
                                      GenericDecorator cachingDecorator)

Method Detail

invalidateCache

public void invalidateCache(@Nonnull
                            ResilienceConfiguration configuration)

Clears the cache associated with the given ResilienceConfiguration if any exists. Be aware that the cache will be cleared for all tenants and principals.

Specified by:

invalidateCache in interface ResilienceDecorationStrategy

Parameters:

configuration - The ResilienceConfiguration the cache is attached to.

decorateSupplier

@Nonnull
public <T> Supplier<T> decorateSupplier(@Nonnull
                                                 Supplier<T> supplier,
                                                 @Nonnull
                                                 ResilienceConfiguration configuration,
                                                 @Nullable
                                                 Function<? super Throwable,T> fallbackFunction)

Decorate an instance of a supplier function.

Specified by:

decorateSupplier in interface ResilienceDecorationStrategy

Type Parameters:

T - The return type of the call.

Parameters:

supplier - The supplier.

configuration - The configuration of the resilient call.

fallbackFunction - In case of failure, execute this function.

Returns:

A decorated supplier.

decorateCallable

@Nonnull
public <T> Callable<T> decorateCallable(@Nonnull
                                                 Callable<T> callable,
                                                 @Nonnull
                                                 ResilienceConfiguration configuration,
                                                 @Nullable
                                                 Function<? super Throwable,T> fallbackFunction)

Decorate an instance of a callable function.

Specified by:

decorateCallable in interface ResilienceDecorationStrategy

Type Parameters:

T - The return type of the call.

Parameters:

callable - The callable.

configuration - The configuration of the resilient call.

fallbackFunction - In case of failure, execute this function.

Returns:

A decorated callable.