From 2efb79d4707f5aab614c91ad9f046c22fe8b8e3b Mon Sep 17 00:00:00 2001
From: Oleg Zhurakousky <ozhurakousky@vmware.com>
Date: Wed, 17 Nov 2021 15:58:56 +0100
Subject: [PATCH] GH-727 Fix NPE in Azure FunctionInvoker output conversion

Resolves #727
---
 .../cloud/function/adapter/azure/FunctionInvoker.java           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/src/main/java/org/springframework/cloud/function/adapter/azure/FunctionInvoker.java b/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/src/main/java/org/springframework/cloud/function/adapter/azure/FunctionInvoker.java
index e8b2eb1bb..01c9f5911 100644
--- a/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/src/main/java/org/springframework/cloud/function/adapter/azure/FunctionInvoker.java
+++ b/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/src/main/java/org/springframework/cloud/function/adapter/azure/FunctionInvoker.java
@@ -186,7 +186,7 @@ public class FunctionInvoker<I, O> {
 
 	@SuppressWarnings("unchecked")
 	private Object convertOutputIfNecessary(Object input, Object output) {
-		if (input instanceof HttpRequestMessage) {
+		if (input != null && input instanceof HttpRequestMessage) {
 			HttpRequestMessage<I> requestMessage = (HttpRequestMessage<I>) input;
 			Map<String, Object> headers = null;
 			if (output instanceof Message) {