Store ObjectProvider rather than their Streams to allow reuse

Generally speaking, methods on configuration classes will only be called once
and, therefore, it should be safe to hold a reference to a Stream for later
one-time usage. However, there are some scenarios in Spring Fu where functional
registration results in an attempt being made to use a Stream more than use.

This commit protects against multiple use by storing the ObjectProvider and
getting a new ordered Stream each time it's needed.

Closes gh-14467

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/jersey/JerseyManagementChildContextConfiguration.java

@@ -16,8 +16,6 @@
 
 package org.springframework.boot.actuate.autoconfigure.web.jersey;
 
-import java.util.stream.Stream;
-
 import org.glassfish.jersey.server.ResourceConfig;
 import org.glassfish.jersey.servlet.ServletContainer;
 
@@ -47,11 +45,11 @@ import org.springframework.context.annotation.Bean;
 @ConditionalOnMissingClass("org.springframework.web.servlet.DispatcherServlet")
 public class JerseyManagementChildContextConfiguration {
 
-	private final Stream<ResourceConfigCustomizer> resourceConfigCustomizers;
+	private final ObjectProvider<ResourceConfigCustomizer> resourceConfigCustomizers;
 
 	public JerseyManagementChildContextConfiguration(
 			ObjectProvider<ResourceConfigCustomizer> resourceConfigCustomizers) {
-		this.resourceConfigCustomizers = resourceConfigCustomizers.orderedStream();
+		this.resourceConfigCustomizers = resourceConfigCustomizers;
 	}
 
 	@Bean
@@ -63,7 +61,7 @@ public class JerseyManagementChildContextConfiguration {
 	@Bean
 	public ResourceConfig endpointResourceConfig() {
 		ResourceConfig resourceConfig = new ResourceConfig();
-		this.resourceConfigCustomizers
+		this.resourceConfigCustomizers.orderedStream()
 				.forEach((customizer) -> customizer.customize(resourceConfig));
 		return resourceConfig;
 	}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cache/JCacheCacheConfiguration.java

@@ -20,7 +20,6 @@ import java.io.IOException;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Properties;
-import java.util.stream.Stream;
 
 import javax.cache.CacheManager;
 import javax.cache.Caching;
@@ -70,9 +69,9 @@ class JCacheCacheConfiguration implements BeanClassLoaderAware {
 
 	private final javax.cache.configuration.Configuration<?, ?> defaultCacheConfiguration;
 
-	private final Stream<JCacheManagerCustomizer> cacheManagerCustomizers;
+	private final ObjectProvider<JCacheManagerCustomizer> cacheManagerCustomizers;
 
-	private final Stream<JCachePropertiesCustomizer> cachePropertiesCustomizers;
+	private final ObjectProvider<JCachePropertiesCustomizer> cachePropertiesCustomizers;
 
 	private ClassLoader beanClassLoader;
 
@@ -84,8 +83,8 @@ class JCacheCacheConfiguration implements BeanClassLoaderAware {
 		this.cacheProperties = cacheProperties;
 		this.customizers = customizers;
 		this.defaultCacheConfiguration = defaultCacheConfiguration.getIfAvailable();
-		this.cacheManagerCustomizers = cacheManagerCustomizers.orderedStream();
+		this.cacheManagerCustomizers = cacheManagerCustomizers;
-		this.cachePropertiesCustomizers = cachePropertiesCustomizers.orderedStream();
+		this.cachePropertiesCustomizers = cachePropertiesCustomizers;
 	}
 
 	@Override
@@ -135,7 +134,7 @@ class JCacheCacheConfiguration implements BeanClassLoaderAware {
 
 	private Properties createCacheManagerProperties() {
 		Properties properties = new Properties();
-		this.cachePropertiesCustomizers.forEach(
+		this.cachePropertiesCustomizers.orderedStream().forEach(
 				(customizer) -> customizer.customize(this.cacheProperties, properties));
 		return properties;
 	}
@@ -148,7 +147,7 @@ class JCacheCacheConfiguration implements BeanClassLoaderAware {
 	}
 
 	private void customize(CacheManager cacheManager) {
-		this.cacheManagerCustomizers
+		this.cacheManagerCustomizers.orderedStream()
 				.forEach((customizer) -> customizer.customize(cacheManager));
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cassandra/CassandraAutoConfiguration.java

@@ -17,7 +17,6 @@
 package org.springframework.boot.autoconfigure.cassandra;
 
 import java.time.Duration;
-import java.util.stream.Stream;
 
 import com.datastax.driver.core.Cluster;
 import com.datastax.driver.core.PoolingOptions;
@@ -51,12 +50,12 @@ public class CassandraAutoConfiguration {
 
 	private final CassandraProperties properties;
 
-	private final Stream<ClusterBuilderCustomizer> builderCustomizers;
+	private final ObjectProvider<ClusterBuilderCustomizer> builderCustomizers;
 
 	public CassandraAutoConfiguration(CassandraProperties properties,
 			ObjectProvider<ClusterBuilderCustomizer> builderCustomizers) {
 		this.properties = properties;
-		this.builderCustomizers = builderCustomizers.orderedStream();
+		this.builderCustomizers = builderCustomizers;
 	}
 
 	@Bean
@@ -88,7 +87,8 @@ public class CassandraAutoConfiguration {
 	}
 
 	private void customize(Cluster.Builder builder) {
-		this.builderCustomizers.forEach((customizer) -> customizer.customize(builder));
+		this.builderCustomizers.orderedStream()
+				.forEach((customizer) -> customizer.customize(builder));
 	}
 
 	private QueryOptions getQueryOptions() {

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/redis/JedisConnectionConfiguration.java

@@ -18,7 +18,6 @@ package org.springframework.boot.autoconfigure.data.redis;
 
 import java.net.UnknownHostException;
 import java.time.Duration;
-import java.util.stream.Stream;
 
 import org.apache.commons.pool2.impl.GenericObjectPool;
 import redis.clients.jedis.Jedis;
@@ -50,7 +49,7 @@ class JedisConnectionConfiguration extends RedisConnectionConfiguration {
 
 	private final RedisProperties properties;
 
-	private final Stream<JedisClientConfigurationBuilderCustomizer> builderCustomizers;
+	private final ObjectProvider<JedisClientConfigurationBuilderCustomizer> builderCustomizers;
 
 	JedisConnectionConfiguration(RedisProperties properties,
 			ObjectProvider<RedisSentinelConfiguration> sentinelConfiguration,
@@ -58,7 +57,7 @@ class JedisConnectionConfiguration extends RedisConnectionConfiguration {
 			ObjectProvider<JedisClientConfigurationBuilderCustomizer> builderCustomizers) {
 		super(properties, sentinelConfiguration, clusterConfiguration);
 		this.properties = properties;
-		this.builderCustomizers = builderCustomizers.orderedStream();
+		this.builderCustomizers = builderCustomizers;
 	}
 
 	@Bean
@@ -131,7 +130,8 @@ class JedisConnectionConfiguration extends RedisConnectionConfiguration {
 
 	private void customize(
 			JedisClientConfiguration.JedisClientConfigurationBuilder builder) {
-		this.builderCustomizers.forEach((customizer) -> customizer.customize(builder));
+		this.builderCustomizers.orderedStream()
+				.forEach((customizer) -> customizer.customize(builder));
 	}
 
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/redis/LettuceConnectionConfiguration.java

@@ -17,7 +17,6 @@
 package org.springframework.boot.autoconfigure.data.redis;
 
 import java.net.UnknownHostException;
-import java.util.stream.Stream;
 
 import io.lettuce.core.RedisClient;
 import io.lettuce.core.resource.ClientResources;
@@ -51,7 +50,7 @@ class LettuceConnectionConfiguration extends RedisConnectionConfiguration {
 
 	private final RedisProperties properties;
 
-	private final Stream<LettuceClientConfigurationBuilderCustomizer> builderCustomizers;
+	private final ObjectProvider<LettuceClientConfigurationBuilderCustomizer> builderCustomizers;
 
 	LettuceConnectionConfiguration(RedisProperties properties,
 			ObjectProvider<RedisSentinelConfiguration> sentinelConfigurationProvider,
@@ -59,7 +58,7 @@ class LettuceConnectionConfiguration extends RedisConnectionConfiguration {
 			ObjectProvider<LettuceClientConfigurationBuilderCustomizer> builderCustomizers) {
 		super(properties, sentinelConfigurationProvider, clusterConfigurationProvider);
 		this.properties = properties;
-		this.builderCustomizers = builderCustomizers.orderedStream();
+		this.builderCustomizers = builderCustomizers;
 	}
 
 	@Bean(destroyMethod = "shutdown")
@@ -137,7 +136,8 @@ class LettuceConnectionConfiguration extends RedisConnectionConfiguration {
 
 	private void customize(
 			LettuceClientConfiguration.LettuceClientConfigurationBuilder builder) {
-		this.builderCustomizers.forEach((customizer) -> customizer.customize(builder));
+		this.builderCustomizers.orderedStream()
+				.forEach((customizer) -> customizer.customize(builder));
 	}
 
 	/**

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/elasticsearch/jest/JestAutoConfiguration.java

@@ -17,7 +17,6 @@
 package org.springframework.boot.autoconfigure.elasticsearch.jest;
 
 import java.time.Duration;
-import java.util.stream.Stream;
 
 import com.google.gson.Gson;
 import io.searchbox.client.JestClient;
@@ -54,13 +53,13 @@ public class JestAutoConfiguration {
 
 	private final ObjectProvider<Gson> gsonProvider;
 
-	private final Stream<HttpClientConfigBuilderCustomizer> builderCustomizers;
+	private final ObjectProvider<HttpClientConfigBuilderCustomizer> builderCustomizers;
 
 	public JestAutoConfiguration(JestProperties properties, ObjectProvider<Gson> gson,
 			ObjectProvider<HttpClientConfigBuilderCustomizer> builderCustomizers) {
 		this.properties = properties;
 		this.gsonProvider = gson;
-		this.builderCustomizers = builderCustomizers.orderedStream();
+		this.builderCustomizers = builderCustomizers;
 	}
 
 	@Bean(destroyMethod = "shutdownClient")
@@ -93,7 +92,8 @@ public class JestAutoConfiguration {
 	}
 
 	private void customize(HttpClientConfig.Builder builder) {
-		this.builderCustomizers.forEach((customizer) -> customizer.customize(builder));
+		this.builderCustomizers.orderedStream()
+				.forEach((customizer) -> customizer.customize(builder));
 	}
 
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/elasticsearch/rest/RestClientAutoConfiguration.java

@@ -16,8 +16,6 @@
 
 package org.springframework.boot.autoconfigure.elasticsearch.rest;
 
-import java.util.stream.Stream;
-
 import org.apache.http.HttpHost;
 import org.apache.http.auth.AuthScope;
 import org.apache.http.auth.Credentials;
@@ -50,12 +48,12 @@ public class RestClientAutoConfiguration {
 
 	private final RestClientProperties properties;
 
-	private final Stream<RestClientBuilderCustomizer> builderCustomizers;
+	private final ObjectProvider<RestClientBuilderCustomizer> builderCustomizers;
 
 	public RestClientAutoConfiguration(RestClientProperties properties,
 			ObjectProvider<RestClientBuilderCustomizer> builderCustomizers) {
 		this.properties = properties;
-		this.builderCustomizers = builderCustomizers.orderedStream();
+		this.builderCustomizers = builderCustomizers;
 	}
 
 	@Bean
@@ -79,7 +77,8 @@ public class RestClientAutoConfiguration {
 			builder.setHttpClientConfigCallback((httpClientBuilder) -> httpClientBuilder
 					.setDefaultCredentialsProvider(credentialsProvider));
 		});
-		this.builderCustomizers.forEach((customizer) -> customizer.customize(builder));
+		this.builderCustomizers.orderedStream()
+				.forEach((customizer) -> customizer.customize(builder));
 		return builder;
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jersey/JerseyAutoConfiguration.java

@@ -18,7 +18,6 @@ package org.springframework.boot.autoconfigure.jersey;
 
 import java.util.Arrays;
 import java.util.EnumSet;
-import java.util.stream.Stream;
 
 import javax.annotation.PostConstruct;
 import javax.servlet.DispatcherType;
@@ -93,7 +92,7 @@ public class JerseyAutoConfiguration implements ServletContextAware {
 
 	private final ResourceConfig config;
 
-	private final Stream<ResourceConfigCustomizer> customizers;
+	private final ObjectProvider<ResourceConfigCustomizer> customizers;
 
 	private String path;
 
@@ -101,7 +100,7 @@ public class JerseyAutoConfiguration implements ServletContextAware {
 			ObjectProvider<ResourceConfigCustomizer> customizers) {
 		this.jersey = jersey;
 		this.config = config;
-		this.customizers = customizers.orderedStream();
+		this.customizers = customizers;
 	}
 
 	@PostConstruct
@@ -121,7 +120,8 @@ public class JerseyAutoConfiguration implements ServletContextAware {
 	}
 
 	private void customize() {
-		this.customizers.forEach((customizer) -> customizer.customize(this.config));
+		this.customizers.orderedStream()
+				.forEach((customizer) -> customizer.customize(this.config));
 	}
 
 	@Bean

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jms/artemis/ArtemisEmbeddedServerConfiguration.java

@@ -19,7 +19,6 @@ package org.springframework.boot.autoconfigure.jms.artemis;
 import java.util.Collection;
 import java.util.List;
 import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
 import org.apache.activemq.artemis.jms.server.config.JMSConfiguration;
 import org.apache.activemq.artemis.jms.server.config.JMSQueueConfiguration;
@@ -50,7 +49,7 @@ class ArtemisEmbeddedServerConfiguration {
 
 	private final ArtemisProperties properties;
 
-	private final Stream<ArtemisConfigurationCustomizer> configurationCustomizers;
+	private final ObjectProvider<ArtemisConfigurationCustomizer> configurationCustomizers;
 
 	private final List<JMSQueueConfiguration> queuesConfiguration;
 
@@ -61,7 +60,7 @@ class ArtemisEmbeddedServerConfiguration {
 			ObjectProvider<JMSQueueConfiguration> queuesConfiguration,
 			ObjectProvider<TopicConfiguration> topicsConfiguration) {
 		this.properties = properties;
-		this.configurationCustomizers = configurationCustomizers.orderedStream();
+		this.configurationCustomizers = configurationCustomizers;
 		this.queuesConfiguration = queuesConfiguration.orderedStream()
 				.collect(Collectors.toList());
 		this.topicsConfiguration = topicsConfiguration.orderedStream()
@@ -90,7 +89,7 @@ class ArtemisEmbeddedServerConfiguration {
 
 	private void customize(
 			org.apache.activemq.artemis.core.config.Configuration configuration) {
-		this.configurationCustomizers
+		this.configurationCustomizers.orderedStream()
 				.forEach((customizer) -> customizer.customize(configuration));
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/quartz/QuartzAutoConfiguration.java

@@ -18,7 +18,6 @@ package org.springframework.boot.autoconfigure.quartz;
 
 import java.util.Map;
 import java.util.Properties;
-import java.util.stream.Stream;
 
 import javax.sql.DataSource;
 
@@ -61,7 +60,7 @@ public class QuartzAutoConfiguration {
 
 	private final QuartzProperties properties;
 
-	private final Stream<SchedulerFactoryBeanCustomizer> customizers;
+	private final ObjectProvider<SchedulerFactoryBeanCustomizer> customizers;
 
 	private final JobDetail[] jobDetails;
 
@@ -77,7 +76,7 @@ public class QuartzAutoConfiguration {
 			ObjectProvider<Map<String, Calendar>> calendars,
 			ObjectProvider<Trigger[]> triggers, ApplicationContext applicationContext) {
 		this.properties = properties;
-		this.customizers = customizers.orderedStream();
+		this.customizers = customizers;
 		this.jobDetails = jobDetails.getIfAvailable();
 		this.calendars = calendars.getIfAvailable();
 		this.triggers = triggers.getIfAvailable();
@@ -124,7 +123,7 @@ public class QuartzAutoConfiguration {
 	}
 
 	private void customize(SchedulerFactoryBean schedulerFactoryBean) {
-		this.customizers
+		this.customizers.orderedStream()
 				.forEach((customizer) -> customizer.customize(schedulerFactoryBean));
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/thymeleaf/ThymeleafAutoConfiguration.java

@@ -18,7 +18,6 @@ package org.springframework.boot.autoconfigure.thymeleaf;
 
 import java.util.Collection;
 import java.util.LinkedHashMap;
-import java.util.stream.Stream;
 
 import javax.annotation.PostConstruct;
 
@@ -136,14 +135,14 @@ public class ThymeleafAutoConfiguration {
 
 		private final Collection<ITemplateResolver> templateResolvers;
 
-		private final Stream<IDialect> dialects;
+		private final ObjectProvider<IDialect> dialects;
 
 		public ThymeleafDefaultConfiguration(ThymeleafProperties properties,
 				Collection<ITemplateResolver> templateResolvers,
 				ObjectProvider<IDialect> dialectsProvider) {
 			this.properties = properties;
 			this.templateResolvers = templateResolvers;
-			this.dialects = dialectsProvider.orderedStream();
+			this.dialects = dialectsProvider;
 		}
 
 		@Bean
@@ -152,7 +151,7 @@ public class ThymeleafAutoConfiguration {
 			SpringTemplateEngine engine = new SpringTemplateEngine();
 			engine.setEnableSpringELCompiler(this.properties.isEnableSpringElCompiler());
 			this.templateResolvers.forEach(engine::addTemplateResolver);
-			this.dialects.forEach(engine::addDialect);
+			this.dialects.orderedStream().forEach(engine::addDialect);
 			return engine;
 		}
 
@@ -224,14 +223,14 @@ public class ThymeleafAutoConfiguration {
 
 		private final Collection<ITemplateResolver> templateResolvers;
 
-		private final Stream<IDialect> dialects;
+		private final ObjectProvider<IDialect> dialects;
 
 		ThymeleafReactiveConfiguration(ThymeleafProperties properties,
 				Collection<ITemplateResolver> templateResolvers,
 				ObjectProvider<IDialect> dialectsProvider) {
 			this.properties = properties;
 			this.templateResolvers = templateResolvers;
-			this.dialects = dialectsProvider.orderedStream();
+			this.dialects = dialectsProvider;
 		}
 
 		@Bean
@@ -240,7 +239,7 @@ public class ThymeleafAutoConfiguration {
 			SpringWebFluxTemplateEngine engine = new SpringWebFluxTemplateEngine();
 			engine.setEnableSpringELCompiler(this.properties.isEnableSpringElCompiler());
 			this.templateResolvers.forEach(engine::addTemplateResolver);
-			this.dialects.forEach(engine::addDialect);
+			this.dialects.orderedStream().forEach(engine::addDialect);
 			return engine;
 		}
 

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

@@ -19,7 +19,6 @@ package org.springframework.boot.autoconfigure.web.reactive;
 import java.time.Duration;
 import java.util.Collection;
 import java.util.concurrent.TimeUnit;
-import java.util.stream.Stream;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -114,13 +113,13 @@ public class WebFluxAutoConfiguration {
 
 		private final ListableBeanFactory beanFactory;
 
-		private final Stream<HandlerMethodArgumentResolver> argumentResolvers;
+		private final ObjectProvider<HandlerMethodArgumentResolver> argumentResolvers;
 
-		private final Stream<CodecCustomizer> codecCustomizers;
+		private final ObjectProvider<CodecCustomizer> codecCustomizers;
 
 		private final ResourceHandlerRegistrationCustomizer resourceHandlerRegistrationCustomizer;
 
-		private final Stream<ViewResolver> viewResolvers;
+		private final ObjectProvider<ViewResolver> viewResolvers;
 
 		public WebFluxConfig(ResourceProperties resourceProperties,
 				WebFluxProperties webFluxProperties, ListableBeanFactory beanFactory,
@@ -131,21 +130,21 @@ public class WebFluxAutoConfiguration {
 			this.resourceProperties = resourceProperties;
 			this.webFluxProperties = webFluxProperties;
 			this.beanFactory = beanFactory;
-			this.argumentResolvers = resolvers.orderedStream();
+			this.argumentResolvers = resolvers;
-			this.codecCustomizers = codecCustomizers.orderedStream();
+			this.codecCustomizers = codecCustomizers;
 			this.resourceHandlerRegistrationCustomizer = resourceHandlerRegistrationCustomizer
 					.getIfAvailable();
-			this.viewResolvers = viewResolvers.orderedStream();
+			this.viewResolvers = viewResolvers;
 		}
 
 		@Override
 		public void configureArgumentResolvers(ArgumentResolverConfigurer configurer) {
-			this.argumentResolvers.forEach(configurer::addCustomResolver);
+			this.argumentResolvers.orderedStream().forEach(configurer::addCustomResolver);
 		}
 
 		@Override
 		public void configureHttpMessageCodecs(ServerCodecConfigurer configurer) {
-			this.codecCustomizers
+			this.codecCustomizers.orderedStream()
 					.forEach((customizer) -> customizer.customize(configurer));
 		}
 
@@ -181,7 +180,7 @@ public class WebFluxAutoConfiguration {
 
 		@Override
 		public void configureViewResolvers(ViewResolverRegistry registry) {
-			this.viewResolvers.forEach(registry::viewResolver);
+			this.viewResolvers.orderedStream().forEach(registry::viewResolver);
 		}
 
 		@Override