From bbac4b198eb5775a08a36ffd45b0b52ead4e41d8 Mon Sep 17 00:00:00 2001
From: Oleg Zhurakousky <ozhurakousky@vmware.com>
Date: Wed, 6 Apr 2022 17:23:48 +0200
Subject: [PATCH] Fix handling of collections by non-reactive Consumers

---
 .../cloud/function/context/catalog/SimpleFunctionRegistry.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistry.java b/spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistry.java
index 3cdd31434..a7712936e 100644
--- a/spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistry.java
+++ b/spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistry.java
@@ -775,6 +775,9 @@ public class SimpleFunctionRegistry implements FunctionRegistry {
 		 */
 		@SuppressWarnings("unchecked")
 		private Object fluxifyInputIfNecessary(Object input) {
+			if (input instanceof Message && !((Message) input).getHeaders().containsKey("user-agent") && this.isConsumer() && !this.isInputTypePublisher()) {
+				return input;
+			}
 			if (FunctionTypeUtils.isMultipleArgumentType(this.inputType)) {
 				return input;
 			}