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.

Nested Class Summary

Nested Classes

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

Field Summary

Fields

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

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

Method Summary

Modifier and Type	Method and 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.
<T> Callable<T>	decorateCallable(Callable<T> callable, ResilienceConfiguration configuration, Function<? super Throwable,T> fallbackFunction) Decorate an instance of a callable function.
<T> Callable<T>	decorateCallable(Callable<T> callable, ResilienceConfiguration config, Function<? super Throwable,T> fallbackFunction, ExecutorService executor) 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.
<T> Supplier<T>	decorateSupplier(Supplier<T> supplier, ResilienceConfiguration configuration, Function<? super Throwable,T> fallbackFunction, ExecutorService executor) Decorate an instance of a supplier function.
boolean	equals(Object o)
int	hashCode()
void	invalidateCache(ResilienceConfiguration configuration) Deprecated.
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 Detail

DEFAULT_DECORATORS

protected static final List<GenericDecorator> DEFAULT_DECORATORS

Constant list of default decorators.

Constructor Detail

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 Detail

invalidateCache

@Deprecated
public void invalidateCache(@Nonnull
                                        ResilienceConfiguration configuration)

Deprecated.

Description copied from interface: ResilienceDecorationStrategy

Resets 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.

clearCache

@Beta
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.

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 configuration,
                                                 @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.

configuration - The configuration of the resilient call.

fallbackFunction - In case of failure, execute this function.

Returns:

A decorated callable.

decorateSupplier

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

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.

executor - (Optional) The thread executor to manage potentially asynchronous properties with, e.g. time limiter.

Returns:

A decorated supplier.

decorateCallable

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

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.

executor - (Optional) The thread executor to manage potentially asynchronous properties with, e.g. time limiter.

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