From 5a9573561548f3e2709b1fa423f189a0c0bb2179 Mon Sep 17 00:00:00 2001
From: Gary Russell <grussell@pivotal.io>
Date: Tue, 22 May 2018 11:17:28 -0400
Subject: [PATCH] GH-152: Inject nullChannel for confirm acks

Fixes https://github.com/spring-cloud/spring-cloud-stream-binder-rabbit/issues/152

Reduce log noise since we only express interest in nacks.
---
 .../cloud/stream/binder/rabbit/RabbitMessageChannelBinder.java  | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/spring-cloud-stream-binder-rabbit/src/main/java/org/springframework/cloud/stream/binder/rabbit/RabbitMessageChannelBinder.java b/spring-cloud-stream-binder-rabbit/src/main/java/org/springframework/cloud/stream/binder/rabbit/RabbitMessageChannelBinder.java
index 2caea8064..9dfb89541 100644
--- a/spring-cloud-stream-binder-rabbit/src/main/java/org/springframework/cloud/stream/binder/rabbit/RabbitMessageChannelBinder.java
+++ b/spring-cloud-stream-binder-rabbit/src/main/java/org/springframework/cloud/stream/binder/rabbit/RabbitMessageChannelBinder.java
@@ -285,6 +285,8 @@ public class RabbitMessageChannelBinder
 			checkConnectionFactoryIsErrorCapable();
 			endpoint.setReturnChannel(errorChannel);
 			endpoint.setConfirmNackChannel(errorChannel);
+			endpoint.setConfirmAckChannel(getApplicationContext().getBean(
+					IntegrationContextUtils.NULL_CHANNEL_BEAN_NAME, MessageChannel.class));
 			endpoint.setConfirmCorrelationExpressionString("#root");
 			endpoint.setErrorMessageStrategy(new DefaultErrorMessageStrategy());
 		}