Using devtools with Reactive application results in slower restarts

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/reactor/netty/ReactorNettyConfigurationProperties.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2012-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.reactor.netty;
+
+import java.time.Duration;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Configuration properties for Reactor Netty configuration.
+ *
+ * @author Moritz Halbritter
+ * @since 2.7.8
+ */
+@ConfigurationProperties(prefix = "spring.reactor.netty")
+public class ReactorNettyConfigurationProperties {
+
+	/**
+	 * Configure the amount of time to wait before shutting down resources.
+	 */
+	private Duration shutdownQuietPeriod;
+
+	public Duration getShutdownQuietPeriod() {
+		return this.shutdownQuietPeriod;
+	}
+
+	public void setShutdownQuietPeriod(Duration shutdownQuietPeriod) {
+		this.shutdownQuietPeriod = shutdownQuietPeriod;
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/reactor/netty/ReactorNettyConfigurations.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2012-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.reactor.netty;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.reactive.ReactorResourceFactory;
+
+/**
+ * Configurations for Reactor Netty. Those should be {@code @Import} in a regular
+ * auto-configuration class.
+ *
+ * @author Moritz Halbritter
+ * @since 2.7.8
+ */
+public final class ReactorNettyConfigurations {
+
+	private ReactorNettyConfigurations() {
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@EnableConfigurationProperties(ReactorNettyConfigurationProperties.class)
+	public static class ReactorResourceFactoryConfiguration {
+
+		@Bean
+		@ConditionalOnMissingBean
+		ReactorResourceFactory reactorResourceFactory(ReactorNettyConfigurationProperties configurationProperties) {
+			ReactorResourceFactory reactorResourceFactory = new ReactorResourceFactory();
+			if (configurationProperties.getShutdownQuietPeriod() != null) {
+				reactorResourceFactory.setShutdownQuietPeriod(configurationProperties.getShutdownQuietPeriod());
+			}
+			return reactorResourceFactory;
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/reactor/netty/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration for Reactor Netty.
+ */
+package org.springframework.boot.autoconfigure.reactor.netty;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/rsocket/RSocketServerAutoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -32,6 +32,7 @@
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.reactor.netty.ReactorNettyConfigurations;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.boot.context.properties.PropertyMapper;
 import org.springframework.boot.rsocket.context.RSocketServerBootstrap;
@@ -41,6 +42,7 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Conditional;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
 import org.springframework.core.io.buffer.NettyDataBufferFactory;
 import org.springframework.http.client.reactive.ReactorResourceFactory;
 import org.springframework.messaging.rsocket.RSocketStrategies;
@@ -79,14 +81,9 @@ RSocketWebSocketNettyRouteProvider rSocketWebsocketRouteProvider(RSocketProperti
 	@ConditionalOnProperty(prefix = "spring.rsocket.server", name = "port")
 	@ConditionalOnClass(ReactorResourceFactory.class)
 	@Configuration(proxyBeanMethods = false)
+	@Import(ReactorNettyConfigurations.ReactorResourceFactoryConfiguration.class)
 	static class EmbeddedServerConfiguration {
 
-		@Bean
-		@ConditionalOnMissingBean
-		ReactorResourceFactory reactorResourceFactory() {
-			return new ReactorResourceFactory();
-		}
-
 		@Bean
 		@ConditionalOnMissingBean
 		RSocketServerFactory rSocketServerFactory(RSocketProperties properties, ReactorResourceFactory resourceFactory,

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/ReactiveWebServerFactoryConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,6 +25,7 @@
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.reactor.netty.ReactorNettyConfigurations;
 import org.springframework.boot.web.embedded.jetty.JettyReactiveWebServerFactory;
 import org.springframework.boot.web.embedded.jetty.JettyServerCustomizer;
 import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory;
@@ -39,6 +40,7 @@
 import org.springframework.boot.web.reactive.server.ReactiveWebServerFactory;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
 import org.springframework.http.client.reactive.JettyResourceFactory;
 import org.springframework.http.client.reactive.ReactorResourceFactory;
 
@@ -57,14 +59,9 @@ abstract class ReactiveWebServerFactoryConfiguration {
 	@Configuration(proxyBeanMethods = false)
 	@ConditionalOnMissingBean(ReactiveWebServerFactory.class)
 	@ConditionalOnClass({ HttpServer.class })
+	@Import(ReactorNettyConfigurations.ReactorResourceFactoryConfiguration.class)
 	static class EmbeddedNetty {
 
-		@Bean
-		@ConditionalOnMissingBean
-		ReactorResourceFactory reactorServerResourceFactory() {
-			return new ReactorResourceFactory();
-		}
-
 		@Bean
 		NettyReactiveWebServerFactory nettyReactiveWebServerFactory(ReactorResourceFactory resourceFactory,
 				ObjectProvider<NettyRouteProvider> routes, ObjectProvider<NettyServerCustomizer> serverCustomizers) {

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/function/client/ClientHttpConnectorConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,8 +24,10 @@
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.reactor.netty.ReactorNettyConfigurations;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.http.client.reactive.ClientHttpConnector;
 import org.springframework.http.client.reactive.HttpComponentsClientHttpConnector;
@@ -48,14 +50,9 @@ class ClientHttpConnectorConfiguration {
 	@Configuration(proxyBeanMethods = false)
 	@ConditionalOnClass(reactor.netty.http.client.HttpClient.class)
 	@ConditionalOnMissingBean(ClientHttpConnector.class)
+	@Import(ReactorNettyConfigurations.ReactorResourceFactoryConfiguration.class)
 	static class ReactorNetty {
 
-		@Bean
-		@ConditionalOnMissingBean
-		ReactorResourceFactory reactorClientResourceFactory() {
-			return new ReactorResourceFactory();
-		}
-
 		@Bean
 		@Lazy
 		ReactorClientHttpConnector reactorClientHttpConnector(ReactorResourceFactory reactorResourceFactory,

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/reactive/function/client/ClientHttpConnectorAutoConfigurationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -56,7 +56,7 @@ void whenReactorIsAvailableThenReactorBeansAreDefined() {
 			BeanDefinition connectorDefinition = context.getBeanFactory()
 					.getBeanDefinition("reactorClientHttpConnector");
 			assertThat(connectorDefinition.isLazyInit()).isTrue();
-			assertThat(context).hasBean("reactorClientResourceFactory");
+			assertThat(context).hasSingleBean(ReactorResourceFactory.class);
 		});
 	}
 

spring-boot-project/spring-boot-devtools/src/main/resources/org/springframework/boot/devtools/env/devtools-property-defaults.properties

@@ -13,4 +13,5 @@ spring.reactor.debug=true
 spring.template.provider.cache=false
 spring.thymeleaf.cache=false
 spring.web.resources.cache.period=0
-spring.web.resources.chain.cache=false
+spring.web.resources.chain.cache=false
+spring.reactor.netty.shutdown-quiet-period=0s