introduce disable-time-limiter property

README.adoc

@@ -253,6 +253,24 @@ resilience4j.timelimiter:
 
 For more information on Resilience4j property configuration, see https://resilience4j.readme.io/docs/getting-started-3#configuration[Resilience4J Spring Boot 2 Configuration].
 
+===== Disabling the TimeLimiter
+
+By default, the `TimeLimiter` is enabled and every execution is backed by a time limit. This time limit is either defined explicitly or the default time limit (provided by `io.github.resilience4j.timelimiter.TimeLimiterConfig#ofDefaults`) is used.
+
+The `TimeLimiter` can be globally disabled by setting the property `spring.cloud.circuitbreaker.resilience4j.disable-time-limiter` to `true`.
+
+[source,yaml]
+----
+spring:
+	cloud:
+		circuitbreaker:
+			resilience4j:
+				disable-time-limiter: true
+----
+
+This type of option is only provided on a global scope within the `spring-cloud-circuitbreaker` and applies to the
+basic and to the reactive circuitbreaker implementation.
+
 ==== Bulkhead pattern supporting
 If `resilience4j-bulkhead` is on the classpath, Spring Cloud CircuitBreaker will wrap all methods with a Resilience4j Bulkhead.
 You can disable the Resilience4j Bulkhead by setting `spring.cloud.circuitbreaker.bulkhead.resilience4j.enabled` to `false`.

spring-cloud-circuitbreaker-resilience4j/src/main/java/org/springframework/cloud/circuitbreaker/resilience4j/ReactiveResilience4JAutoConfiguration.java

@@ -54,9 +54,10 @@ public class ReactiveResilience4JAutoConfiguration {
 	@Bean
 	@ConditionalOnMissingBean(ReactiveCircuitBreakerFactory.class)
 	public ReactiveResilience4JCircuitBreakerFactory reactiveResilience4JCircuitBreakerFactory(
-			CircuitBreakerRegistry circuitBreakerRegistry, TimeLimiterRegistry timeLimiterRegistry) {
+			CircuitBreakerRegistry circuitBreakerRegistry, TimeLimiterRegistry timeLimiterRegistry,
+			Resilience4JConfigurationProperties resilience4JConfigurationProperties) {
 		ReactiveResilience4JCircuitBreakerFactory factory = new ReactiveResilience4JCircuitBreakerFactory(
-				circuitBreakerRegistry, timeLimiterRegistry);
+				circuitBreakerRegistry, timeLimiterRegistry, resilience4JConfigurationProperties);
 		customizers.forEach(customizer -> customizer.customize(factory));
 		return factory;
 	}

spring-cloud-circuitbreaker-resilience4j/src/main/java/org/springframework/cloud/circuitbreaker/resilience4j/ReactiveResilience4JCircuitBreaker.java

@@ -16,6 +16,7 @@
 
 package org.springframework.cloud.circuitbreaker.resilience4j;
 
+import java.time.Duration;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.TimeUnit;
@@ -59,29 +60,46 @@ public class ReactiveResilience4JCircuitBreaker implements ReactiveCircuitBreake
 
 	private final Optional<Customizer<CircuitBreaker>> circuitBreakerCustomizer;
 
+	private final boolean disableTimeLimiter;
+
+	@Deprecated
+	public ReactiveResilience4JCircuitBreaker(String id, String groupName,
+		Resilience4JConfigBuilder.Resilience4JCircuitBreakerConfiguration config,
+		CircuitBreakerRegistry circuitBreakerRegistry, TimeLimiterRegistry timeLimiterRegistry,
+		Optional<Customizer<CircuitBreaker>> circuitBreakerCustomizer) {
+		this(id, groupName, config, circuitBreakerRegistry, timeLimiterRegistry, circuitBreakerCustomizer, false);
+	}
+
 	public ReactiveResilience4JCircuitBreaker(String id, String groupName,
 			Resilience4JConfigBuilder.Resilience4JCircuitBreakerConfiguration config,
 			CircuitBreakerRegistry circuitBreakerRegistry, TimeLimiterRegistry timeLimiterRegistry,
-			Optional<Customizer<CircuitBreaker>> circuitBreakerCustomizer) {
+			Optional<Customizer<CircuitBreaker>> circuitBreakerCustomizer,
+			boolean disableTimeLimiter) {
 		this.id = id;
 		this.groupName = groupName;
 		this.circuitBreakerConfig = config.getCircuitBreakerConfig();
 		this.circuitBreakerRegistry = circuitBreakerRegistry;
 		this.circuitBreakerCustomizer = circuitBreakerCustomizer;
 		this.timeLimiterConfig = config.getTimeLimiterConfig();
 		this.timeLimiterRegistry = timeLimiterRegistry;
+		this.disableTimeLimiter = disableTimeLimiter;
 	}
 
 	@Override
 	public <T> Mono<T> run(Mono<T> toRun, Function<Throwable, Mono<T>> fallback) {
-		Tuple2<CircuitBreaker, TimeLimiter> tuple = buildCircuitBreakerAndTimeLimiter();
-		Mono<T> toReturn = toRun.transform(CircuitBreakerOperator.of(tuple.getT1()))
-				.timeout(tuple.getT2().getTimeLimiterConfig().getTimeoutDuration())
-				// Since we are using the Mono timeout we need to tell the circuit breaker
-				// about the error
-				.doOnError(TimeoutException.class,
-						t -> tuple.getT1().onError(tuple.getT2().getTimeLimiterConfig().getTimeoutDuration().toMillis(),
-								TimeUnit.MILLISECONDS, t));
+		Tuple2<CircuitBreaker, Optional<TimeLimiter>> tuple = buildCircuitBreakerAndTimeLimiter();
+		Mono<T> toReturn = toRun.transform(CircuitBreakerOperator.of(tuple.getT1()));
+		if (tuple.getT2().isPresent()) {
+			final Duration timeoutDuration = tuple.getT2().get().getTimeLimiterConfig().getTimeoutDuration();
+			toReturn = toReturn
+					.timeout(timeoutDuration)
+					// Since we are using the Mono timeout we need to tell the circuit breaker
+					// about the error
+					.doOnError(TimeoutException.class,
+							t -> tuple.getT1()
+									.onError(timeoutDuration.toMillis(),
+											TimeUnit.MILLISECONDS, t));
+		}
 		if (fallback != null) {
 			toReturn = toReturn.onErrorResume(fallback);
 		}
@@ -90,28 +108,37 @@ public <T> Mono<T> run(Mono<T> toRun, Function<Throwable, Mono<T>> fallback) {
 
 	@Override
 	public <T> Flux<T> run(Flux<T> toRun, Function<Throwable, Flux<T>> fallback) {
-		Tuple2<CircuitBreaker, TimeLimiter> tuple = buildCircuitBreakerAndTimeLimiter();
-		Flux<T> toReturn = toRun.transform(CircuitBreakerOperator.of(tuple.getT1()))
-				.timeout(tuple.getT2().getTimeLimiterConfig().getTimeoutDuration())
-				// Since we are using the Flux timeout we need to tell the circuit breaker
-				// about the error
-				.doOnError(TimeoutException.class,
-						t -> tuple.getT1().onError(tuple.getT2().getTimeLimiterConfig().getTimeoutDuration().toMillis(),
-								TimeUnit.MILLISECONDS, t));
+		Tuple2<CircuitBreaker, Optional<TimeLimiter>> tuple = buildCircuitBreakerAndTimeLimiter();
+		Flux<T> toReturn = toRun.transform(CircuitBreakerOperator.of(tuple.getT1()));
+		if (tuple.getT2().isPresent()) {
+			final Duration timeoutDuration = tuple.getT2().get().getTimeLimiterConfig().getTimeoutDuration();
+			toReturn = toReturn.timeout(timeoutDuration)
+					// Since we are using the Flux timeout we need to tell the circuit breaker
+					// about the error
+					.doOnError(TimeoutException.class,
+							t -> tuple.getT1()
+									.onError(timeoutDuration.toMillis(),
+											TimeUnit.MILLISECONDS, t));
+		}
 		if (fallback != null) {
 			toReturn = toReturn.onErrorResume(fallback);
 		}
 		return toReturn;
 	}
 
-	private Tuple2<CircuitBreaker, TimeLimiter> buildCircuitBreakerAndTimeLimiter() {
+	private Tuple2<CircuitBreaker, Optional<TimeLimiter>> buildCircuitBreakerAndTimeLimiter() {
 		final Map<String, String> tags = Map.of(CIRCUIT_BREAKER_GROUP_TAG, this.groupName);
 		CircuitBreaker circuitBreaker = circuitBreakerRegistry.circuitBreaker(id, circuitBreakerConfig, tags);
 		circuitBreakerCustomizer.ifPresent(customizer -> customizer.customize(circuitBreaker));
+		if (disableTimeLimiter) {
+			/* do not provide/load time-limiter */
+			return Tuples.of(circuitBreaker, Optional.empty());
+		}
+		/* provide time-limiter */
 		TimeLimiter timeLimiter = this.timeLimiterRegistry.find(this.id)
 				.orElseGet(() -> this.timeLimiterRegistry.find(this.groupName)
 						.orElseGet(() -> this.timeLimiterRegistry.timeLimiter(this.id, this.timeLimiterConfig, tags)));
-		return Tuples.of(circuitBreaker, timeLimiter);
+		return Tuples.of(circuitBreaker, Optional.of(timeLimiter));
 	}
 
 }

spring-cloud-circuitbreaker-resilience4j/src/main/java/org/springframework/cloud/circuitbreaker/resilience4j/ReactiveResilience4JCircuitBreakerFactory.java

@@ -46,15 +46,25 @@ public class ReactiveResilience4JCircuitBreakerFactory extends
 
 	private TimeLimiterRegistry timeLimiterRegistry = TimeLimiterRegistry.ofDefaults();
 
-	private Map<String, Customizer<CircuitBreaker>> circuitBreakerCustomizers = new HashMap<>();
+	private final Map<String, Customizer<CircuitBreaker>> circuitBreakerCustomizers = new HashMap<>();
+
+	private final Resilience4JConfigurationProperties resilience4JConfigurationProperties;
+
+	@Deprecated
+	public ReactiveResilience4JCircuitBreakerFactory(CircuitBreakerRegistry circuitBreakerRegistry,
+		TimeLimiterRegistry timeLimiterRegistry) {
+		this(circuitBreakerRegistry, timeLimiterRegistry, null);
+	}
 
 	public ReactiveResilience4JCircuitBreakerFactory(CircuitBreakerRegistry circuitBreakerRegistry,
-			TimeLimiterRegistry timeLimiterRegistry) {
+			TimeLimiterRegistry timeLimiterRegistry,
+			Resilience4JConfigurationProperties resilience4JConfigurationProperties) {
 		this.circuitBreakerRegistry = circuitBreakerRegistry;
 		this.timeLimiterRegistry = timeLimiterRegistry;
 		this.defaultConfiguration = id -> new Resilience4JConfigBuilder(id)
 				.circuitBreakerConfig(this.circuitBreakerRegistry.getDefaultConfig())
 				.timeLimiterConfig(this.timeLimiterRegistry.getDefaultConfig()).build();
+		this.resilience4JConfigurationProperties = resilience4JConfigurationProperties;
 	}
 
 	@Override
@@ -91,7 +101,14 @@ public ReactiveCircuitBreaker create(String id, String groupName) {
 		Resilience4JConfigBuilder.Resilience4JCircuitBreakerConfiguration config = new Resilience4JConfigBuilder(id)
 				.circuitBreakerConfig(circuitBreakerConfig).timeLimiterConfig(timeLimiterConfig).build();
 		return new ReactiveResilience4JCircuitBreaker(id, groupName, config, circuitBreakerRegistry,
-				timeLimiterRegistry, Optional.ofNullable(circuitBreakerCustomizers.get(id)));
+			timeLimiterRegistry, Optional.ofNullable(circuitBreakerCustomizers.get(id)), isDisableTimeLimiter());
+	}
+
+	private boolean isDisableTimeLimiter() {
+		if (resilience4JConfigurationProperties != null) {
+			return resilience4JConfigurationProperties.isDisableTimeLimiter();
+		}
+		return false;
 	}
 
 	@Override

spring-cloud-circuitbreaker-resilience4j/src/main/java/org/springframework/cloud/circuitbreaker/resilience4j/Resilience4JCircuitBreaker.java

@@ -45,6 +45,7 @@ public class Resilience4JCircuitBreaker implements CircuitBreaker {
 	private final String id;
 
 	private final String groupName;
+	private final Map<String, String> tags;
 
 	private Resilience4jBulkheadProvider bulkheadProvider;
 
@@ -60,12 +61,26 @@ public class Resilience4JCircuitBreaker implements CircuitBreaker {
 
 	private final Optional<Customizer<io.github.resilience4j.circuitbreaker.CircuitBreaker>> circuitBreakerCustomizer;
 
+	private final boolean disableTimeLimiter;
+
+	@Deprecated
+	public Resilience4JCircuitBreaker(String id, String groupName,
+		io.github.resilience4j.circuitbreaker.CircuitBreakerConfig circuitBreakerConfig,
+		TimeLimiterConfig timeLimiterConfig, CircuitBreakerRegistry circuitBreakerRegistry,
+		TimeLimiterRegistry timeLimiterRegistry, ExecutorService executorService,
+		Optional<Customizer<io.github.resilience4j.circuitbreaker.CircuitBreaker>> circuitBreakerCustomizer,
+		Resilience4jBulkheadProvider bulkheadProvider) {
+		this(id, groupName, circuitBreakerConfig, timeLimiterConfig, circuitBreakerRegistry, timeLimiterRegistry,
+			executorService, circuitBreakerCustomizer, bulkheadProvider, false);
+	}
+
 	public Resilience4JCircuitBreaker(String id, String groupName,
 			io.github.resilience4j.circuitbreaker.CircuitBreakerConfig circuitBreakerConfig,
 			TimeLimiterConfig timeLimiterConfig, CircuitBreakerRegistry circuitBreakerRegistry,
 			TimeLimiterRegistry timeLimiterRegistry, ExecutorService executorService,
 			Optional<Customizer<io.github.resilience4j.circuitbreaker.CircuitBreaker>> circuitBreakerCustomizer,
-			Resilience4jBulkheadProvider bulkheadProvider) {
+			Resilience4jBulkheadProvider bulkheadProvider,
+			boolean disableTimeLimiter) {
 		this.id = id;
 		this.groupName = groupName;
 		this.circuitBreakerConfig = circuitBreakerConfig;
@@ -75,6 +90,8 @@ public Resilience4JCircuitBreaker(String id, String groupName,
 		this.executorService = executorService;
 		this.circuitBreakerCustomizer = circuitBreakerCustomizer;
 		this.bulkheadProvider = bulkheadProvider;
+		this.disableTimeLimiter = disableTimeLimiter;
+		this.tags = Map.of(CIRCUIT_BREAKER_GROUP_TAG, this.groupName);
 	}
 
 	public Resilience4JCircuitBreaker(String id, String groupName,
@@ -90,40 +107,42 @@ public Resilience4JCircuitBreaker(String id, String groupName,
 	@Override
 	public <T> T run(Supplier<T> toRun, Function<Throwable, T> fallback) {
 		final Map<String, String> tags = Map.of(CIRCUIT_BREAKER_GROUP_TAG, this.groupName);
-		TimeLimiter timeLimiter = this.timeLimiterRegistry.find(this.id)
-				.orElseGet(() -> this.timeLimiterRegistry.find(this.groupName)
-						.orElseGet(() -> this.timeLimiterRegistry.timeLimiter(this.id, this.timeLimiterConfig, tags)));
+		Optional<TimeLimiter> timeLimiter = loadTimeLimiter();
 		io.github.resilience4j.circuitbreaker.CircuitBreaker defaultCircuitBreaker = registry.circuitBreaker(this.id,
-				this.circuitBreakerConfig, tags);
+			this.circuitBreakerConfig, tags);
 		circuitBreakerCustomizer.ifPresent(customizer -> customizer.customize(defaultCircuitBreaker));
 		if (bulkheadProvider != null) {
 
 			if (executorService != null) {
 				Supplier<Future<T>> futureSupplier = () -> executorService.submit(toRun::get);
-				Callable<T> timeLimitedCall = TimeLimiter.decorateFutureSupplier(timeLimiter, futureSupplier);
+				/* conditionally wrap in time-limiter */
+				Callable<T> timeLimitedCall = timeLimiter.map(tl -> TimeLimiter.decorateFutureSupplier(tl, futureSupplier))
+					.orElse(() -> futureSupplier.get().get());
 				Callable<T> bulkheadCall = bulkheadProvider.decorateCallable(this.groupName, tags, timeLimitedCall);
 				Callable<T> circuitBreakerCall = io.github.resilience4j.circuitbreaker.CircuitBreaker
-						.decorateCallable(defaultCircuitBreaker, bulkheadCall);
+					.decorateCallable(defaultCircuitBreaker, bulkheadCall);
 				return getAndApplyFallback(circuitBreakerCall, fallback);
 			}
 			else {
 				Callable<T> bulkheadCall = bulkheadProvider.decorateCallable(this.groupName, tags, toRun::get);
 				Callable<T> circuitBreakerCall = io.github.resilience4j.circuitbreaker.CircuitBreaker
-						.decorateCallable(defaultCircuitBreaker, bulkheadCall);
+					.decorateCallable(defaultCircuitBreaker, bulkheadCall);
 				return getAndApplyFallback(circuitBreakerCall, fallback);
 			}
 		}
 		else {
 			if (executorService != null) {
 				Supplier<Future<T>> futureSupplier = () -> executorService.submit(toRun::get);
-				Callable<T> restrictedCall = TimeLimiter.decorateFutureSupplier(timeLimiter, futureSupplier);
+				/* conditionally wrap in time-limiter */
+				Callable<T> restrictedCall = timeLimiter.map(tl -> TimeLimiter.decorateFutureSupplier(tl, futureSupplier))
+					.orElse(() -> futureSupplier.get().get());
 				Callable<T> callable = io.github.resilience4j.circuitbreaker.CircuitBreaker
-						.decorateCallable(defaultCircuitBreaker, restrictedCall);
+					.decorateCallable(defaultCircuitBreaker, restrictedCall);
 				return getAndApplyFallback(callable, fallback);
 			}
 			else {
 				Supplier<T> decorator = io.github.resilience4j.circuitbreaker.CircuitBreaker
-						.decorateSupplier(defaultCircuitBreaker, toRun);
+					.decorateSupplier(defaultCircuitBreaker, toRun);
 				return getAndApplyFallback(decorator, fallback);
 			}
 		}
@@ -147,4 +166,12 @@ private static <T> T getAndApplyFallback(Callable<T> callable, Function<Throwabl
 		}
 	}
 
+	private Optional<TimeLimiter> loadTimeLimiter() {
+		if (disableTimeLimiter) {
+			return Optional.empty();
+		}
+		return Optional.of(this.timeLimiterRegistry.find(this.id)
+			.orElseGet(() -> this.timeLimiterRegistry.find(this.groupName)
+				.orElseGet(() -> this.timeLimiterRegistry.timeLimiter(this.id, this.timeLimiterConfig, this.tags))));
+	}
 }

spring-cloud-circuitbreaker-resilience4j/src/main/java/org/springframework/cloud/circuitbreaker/resilience4j/Resilience4JCircuitBreakerFactory.java

@@ -172,7 +172,8 @@ private Resilience4JCircuitBreaker create(String id, String groupName,
 		else {
 			return new Resilience4JCircuitBreaker(id, groupName, circuitBreakerConfig, timeLimiterConfig,
 					circuitBreakerRegistry, timeLimiterRegistry, circuitBreakerExecutorService,
-					Optional.ofNullable(circuitBreakerCustomizers.get(id)), bulkheadProvider);
+					Optional.ofNullable(circuitBreakerCustomizers.get(id)), bulkheadProvider,
+					this.resilience4JConfigurationProperties.isDisableTimeLimiter());
 		}
 
 	}

spring-cloud-circuitbreaker-resilience4j/src/main/java/org/springframework/cloud/circuitbreaker/resilience4j/Resilience4JConfigurationProperties.java

@@ -32,6 +32,8 @@ public class Resilience4JConfigurationProperties {
 
 	private boolean disableThreadPool = false;
 
+	private boolean disableTimeLimiter = false;
+
 	public boolean isEnableGroupMeterFilter() {
 		return enableGroupMeterFilter;
 	}
@@ -64,4 +66,12 @@ public void setDisableThreadPool(boolean disableThreadPool) {
 		this.disableThreadPool = disableThreadPool;
 	}
 
+
+	boolean isDisableTimeLimiter() {
+		return disableTimeLimiter;
+	}
+
+	void setDisableTimeLimiter(boolean disableTimeLimiter) {
+		this.disableTimeLimiter = disableTimeLimiter;
+	}
 }

spring-cloud-circuitbreaker-resilience4j/src/main/java/org/springframework/cloud/circuitbreaker/resilience4j/Resilience4jBulkheadProvider.java

@@ -154,8 +154,12 @@ private boolean useSemaphoreBulkhead(String id) {
 				|| (bulkheadRegistry.find(id).isPresent() && threadPoolBulkheadRegistry.find(id).isEmpty());
 	}
 
-	private <T> Callable<T> decorateTimeLimiter(final Supplier<CompletionStage<T>> supplier, TimeLimiter timeLimiter) {
+	private static <T> Callable<T> decorateTimeLimiter(final Supplier<? extends CompletionStage<T>> supplier, TimeLimiter timeLimiter) {
 		final Supplier<Future<T>> futureSupplier = () -> supplier.get().toCompletableFuture();
+		if (timeLimiter == null) {
+			/* execute without time-limiter */
+			return () -> futureSupplier.get().get();
+		}
 		return timeLimiter.decorateFutureSupplier(futureSupplier);
 	}
 

spring-cloud-circuitbreaker-resilience4j/src/test/java/org/springframework/cloud/circuitbreaker/resilience4j/ReactiveResilience4JAutoConfigurationWithoutMetricsTest.java

@@ -44,7 +44,7 @@ public class ReactiveResilience4JAutoConfigurationWithoutMetricsTest {
 
 	static ReactiveResilience4JCircuitBreakerFactory circuitBreakerFactory = spy(
 			new ReactiveResilience4JCircuitBreakerFactory(CircuitBreakerRegistry.ofDefaults(),
-					TimeLimiterRegistry.ofDefaults()));
+					TimeLimiterRegistry.ofDefaults(), new Resilience4JConfigurationProperties()));
 
 	@Test
 	public void testWithoutMetrics() {