Package com.sap.cloud.sdk.cloudplatform.resilience4j

Class Resilience4jDecorationStrategy

java.lang.Object

com.sap.cloud.sdk.cloudplatform.resilience4j.Resilience4jDecorationStrategy

All Implemented Interfaces:

ResilienceDecorationStrategy

public class Resilience4jDecorationStrategy
extends Object
implements ResilienceDecorationStrategy

Configurable implementation of ResilienceDecorationStrategy using Resilience4j.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Resilience4jDecorationStrategy.Resilience4jDecorationStrategyBuilder	Builder class for custom instances of Resilience4jDecorationStrategy.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final List<GenericDecorator>	DEFAULT_DECORATORS	Constant list of default decorators.

Constructor Summary

Constructors

Constructor	Description
Resilience4jDecorationStrategy()	Default constructor with default set of decorators.
Resilience4jDecorationStrategy(GenericDecorator... decorators)	Default constructor with enumerated decorators.

Method Summary

Modifier and Type	Method	Description
static Resilience4jDecorationStrategy.Resilience4jDecorationStrategyBuilder	builder()
protected boolean	canEqual(Object other)
void	clearAllCacheEntries(ResilienceConfiguration configuration)	Clears the entire cache associated with the given ResilienceConfiguration if any exists, independent of the specified ResilienceIsolationMode and defined parameters.
void	clearCache(ResilienceConfiguration configuration)	Clears the cache associated with the given ResilienceConfiguration if any exists.
void	clearCache(ResilienceConfiguration configuration, CacheFilter filter)	Clears the cache associated with the given ResilienceConfiguration by respecting the provided CacheFilter.
<T> Callable<T>	decorateCallable(Callable<T> callable, ResilienceConfiguration config, 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.
boolean	equals(Object o)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

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

Field Details

DEFAULT_DECORATORS

protected static final List<GenericDecorator> DEFAULT_DECORATORS

Constant list of default decorators.

Constructor Details

Resilience4jDecorationStrategy

public Resilience4jDecorationStrategy()

Default constructor with default set of decorators.

Resilience4jDecorationStrategy

public Resilience4jDecorationStrategy(@Nonnull
 GenericDecorator... decorators)

Default constructor with enumerated decorators.

Parameters:

decorators - The resilience decorators to be attached.

Method Details

clearCache

public void clearCache(@Nonnull
 ResilienceConfiguration configuration)

Description copied from interface: ResilienceDecorationStrategy

Clears the cache associated with the given ResilienceConfiguration if any exists. This method respects tenant/principal isolation according to the ResilienceIsolationMode as well as parameter isolation.
To clear all cache entries for all tenants, principals, and parameters, ResilienceDecorationStrategy.clearAllCacheEntries(ResilienceConfiguration) can be used instead.

Specified by:

clearCache in interface ResilienceDecorationStrategy

Parameters:

configuration - The ResilienceConfiguration the cache is attached to.

clearCache

public void clearCache(@Nonnull
 ResilienceConfiguration configuration,
 @Nonnull
 CacheFilter filter)

Description copied from interface: ResilienceDecorationStrategy

Clears the cache associated with the given ResilienceConfiguration by respecting the provided CacheFilter.

Specified by:

clearCache in interface ResilienceDecorationStrategy

Parameters:

configuration - The ResilienceConfiguration the cache is attached to.

filter - A CacheFilter to apply in order to select entries that should be cleared from the cache.

clearAllCacheEntries

public void clearAllCacheEntries(@Nonnull
 ResilienceConfiguration configuration)

Description copied from interface: ResilienceDecorationStrategy

Clears the entire cache associated with the given ResilienceConfiguration if any exists, independent of the specified ResilienceIsolationMode and defined parameters. Be aware that this operation affects all tenants and principals.
Use ResilienceDecorationStrategy.clearCache(ResilienceConfiguration) to respect the tenant/principal and parameter isolation.

Specified by:

clearAllCacheEntries 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)

Description copied from interface: ResilienceDecorationStrategy

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 config,
 @Nullable
 Function<? super Throwable,T> fallbackFunction)

Description copied from interface: ResilienceDecorationStrategy

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.

config - The configuration of the resilient call.

fallbackFunction - In case of failure, execute this function.

Returns:

A decorated callable.

builder

@Nonnull
public static Resilience4jDecorationStrategy.Resilience4jDecorationStrategyBuilder builder()

toString

@Nonnull
public String toString()

Overrides:

toString in class Object

equals

public boolean equals(@Nullable
 Object o)

Overrides:

equals in class Object

canEqual

protected boolean canEqual(@Nullable
 Object other)

hashCode

public int hashCode()

Overrides:

hashCode in class Object