From 28cef69ea39db5eeeb9b53a9c3a918f4f1594243 Mon Sep 17 00:00:00 2001
From: groat-mike <groat.mike@gmail.com>
Date: Fri, 3 Mar 2023 19:49:04 -0500
Subject: [PATCH] Use logger instead of System.out; Fixes gh-1005

---
 .../function/context/catalog/SimpleFunctionRegistry.java    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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 2f66d6236..40414c871 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
@@ -927,7 +927,11 @@ public class SimpleFunctionRegistry implements FunctionRegistry, FunctionInspect
 			if (inputValue instanceof Message && !this.isInputTypeMessage()) {
 				inputValue = ((Message) inputValue).getPayload();
 			}
-			System.out.println("Invoking function: " + this + "with input type: " + this.getInputType());
+
+			if (logger.isDebugEnabled()) {
+				logger.debug("Invoking function: " + this + "with input type: " + this.getInputType());
+			}
+
 			Object result = ((Function) this.target).apply(inputValue);
 
 			if (result instanceof Publisher && functionInvocationHelper != null) {