Revert "Use ObjectProvider for DeferringLoadBalancerExchangeFilterFunction."

This reverts commit 8fdd79f.

# Conflicts:
#	spring-cloud-commons/src/main/java/org/springframework/cloud/client/loadbalancer/reactive/LoadBalancerWebClientBuilderBeanPostProcessor.java

Author: OlgaMaciaszek

spring-cloud-commons/src/main/java/org/springframework/cloud/client/loadbalancer/SimpleObjectProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2024 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -55,7 +55,7 @@ void tryResolveDelegate() {
 		if (delegate == null) {
 			delegate = exchangeFilterFunctionProvider.getIfAvailable();
 			if (delegate == null) {
-				throw new IllegalStateException("LoadBalancerExchangeFilterFunction not available.");
+				throw new IllegalStateException("ReactorLoadBalancerExchangeFilterFunction not available.");
 			}
 		}
 	}

spring-cloud-commons/src/main/java/org/springframework/cloud/client/loadbalancer/reactive/DeferringLoadBalancerExchangeFilterFunction.java

@@ -27,6 +27,7 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Conditional;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.context.annotation.Primary;
 import org.springframework.web.reactive.function.client.WebClient;
 
@@ -47,10 +48,9 @@
 @Conditional(LoadBalancerBeanPostProcessorAutoConfiguration.OnAnyLoadBalancerImplementationPresentCondition.class)
 public class LoadBalancerBeanPostProcessorAutoConfiguration {
 
-	@SuppressWarnings("rawtypes")
 	@Bean
 	public static LoadBalancerWebClientBuilderBeanPostProcessor loadBalancerWebClientBuilderBeanPostProcessor(
-			ObjectProvider<DeferringLoadBalancerExchangeFilterFunction> deferringExchangeFilterFunction,
+			@Lazy DeferringLoadBalancerExchangeFilterFunction deferringExchangeFilterFunction,
 			ApplicationContext context) {
 		return new LoadBalancerWebClientBuilderBeanPostProcessor(deferringExchangeFilterFunction, context);
 	}

spring-cloud-commons/src/main/java/org/springframework/cloud/client/loadbalancer/reactive/LoadBalancerBeanPostProcessorAutoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2024 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -17,10 +17,8 @@
 package org.springframework.cloud.client.loadbalancer.reactive;
 
 import org.springframework.beans.BeansException;
-import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.beans.factory.config.BeanPostProcessor;
 import org.springframework.cloud.client.loadbalancer.LoadBalanced;
-import org.springframework.cloud.client.loadbalancer.SimpleObjectProvider;
 import org.springframework.context.ApplicationContext;
 import org.springframework.web.reactive.function.client.WebClient;
 
@@ -32,28 +30,15 @@
  * @author Olga Maciaszek-Sharma
  * @since 2.2.0
  */
-@SuppressWarnings({ "removal", "rawtypes" })
 public class LoadBalancerWebClientBuilderBeanPostProcessor implements BeanPostProcessor {
 
-	private final ObjectProvider<DeferringLoadBalancerExchangeFilterFunction> exchangeFilterFunctionObjectProvider;
+	private final DeferringLoadBalancerExchangeFilterFunction exchangeFilterFunction;
 
 	private final ApplicationContext context;
 
-	/**
-	 * @deprecated in favour of
-	 * {@link LoadBalancerWebClientBuilderBeanPostProcessor#LoadBalancerWebClientBuilderBeanPostProcessor(ObjectProvider, ApplicationContext)}
-	 */
-	@Deprecated(forRemoval = true)
 	public LoadBalancerWebClientBuilderBeanPostProcessor(
 			DeferringLoadBalancerExchangeFilterFunction exchangeFilterFunction, ApplicationContext context) {
-		this.exchangeFilterFunctionObjectProvider = new SimpleObjectProvider<>(exchangeFilterFunction);
-		this.context = context;
-	}
-
-	public LoadBalancerWebClientBuilderBeanPostProcessor(
-			ObjectProvider<DeferringLoadBalancerExchangeFilterFunction> exchangeFilterFunction,
-			ApplicationContext context) {
-		this.exchangeFilterFunctionObjectProvider = exchangeFilterFunction;
+		this.exchangeFilterFunction = exchangeFilterFunction;
 		this.context = context;
 	}
 
@@ -63,12 +48,7 @@ public Object postProcessBeforeInitialization(Object bean, String beanName) thro
 			if (context.findAnnotationOnBean(beanName, LoadBalanced.class) == null) {
 				return bean;
 			}
-			DeferringLoadBalancerExchangeFilterFunction exchangeFilterFunction = exchangeFilterFunctionObjectProvider
-				.getIfAvailable();
-			if (exchangeFilterFunction == null) {
-				throw new IllegalStateException("LoadBalancerExchangeFilterFunction not found");
-			}
-			((WebClient.Builder) bean).filter(exchangeFilterFunctionObjectProvider.getIfAvailable());
+			((WebClient.Builder) bean).filter(exchangeFilterFunction);
 		}
 		return bean;
 	}