From ab075b004b4265b237b79924d9ea0dbccfa692c3 Mon Sep 17 00:00:00 2001
From: Stuart Lang <stuart.b.lang@gmail.com>
Date: Mon, 8 Jul 2024 15:02:10 +0100
Subject: [PATCH] Add null check and remove binary breaking change

---
 .../MessageHandling/Dispatch/MessageDispatcher.cs   | 13 +++++++++++++
 .../Compression/MessageCompressionRegistry.cs       |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/JustSaying/AwsTools/MessageHandling/Dispatch/MessageDispatcher.cs b/src/JustSaying/AwsTools/MessageHandling/Dispatch/MessageDispatcher.cs
index f44b3c83..dfb87507 100644
--- a/src/JustSaying/AwsTools/MessageHandling/Dispatch/MessageDispatcher.cs
+++ b/src/JustSaying/AwsTools/MessageHandling/Dispatch/MessageDispatcher.cs
@@ -32,6 +32,19 @@ public MessageDispatcher(
         _logger = loggerFactory.CreateLogger("JustSaying");
     }
 
+    public MessageDispatcher(
+        IMessageSerializationRegister serializationRegister,
+        IMessageMonitor messagingMonitor,
+        MiddlewareMap middlewareMap,
+        ILoggerFactory loggerFactory) : this(
+        serializationRegister,
+        messagingMonitor,
+        middlewareMap,
+        null,
+        loggerFactory)
+    {
+    }
+
     public async Task DispatchMessageAsync(
         IQueueMessageContext messageContext,
         CancellationToken cancellationToken)
diff --git a/src/JustSaying/Messaging/Compression/MessageCompressionRegistry.cs b/src/JustSaying/Messaging/Compression/MessageCompressionRegistry.cs
index 6445b43e..1a275dcb 100644
--- a/src/JustSaying/Messaging/Compression/MessageCompressionRegistry.cs
+++ b/src/JustSaying/Messaging/Compression/MessageCompressionRegistry.cs
@@ -13,7 +13,7 @@ public sealed class MessageCompressionRegistry : IMessageCompressionRegistry
     /// <param name="compressions">A list of available compression methods.</param>
     public MessageCompressionRegistry(IList<IMessageBodyCompression> compressions)
     {
-        _compressions = compressions;
+        _compressions = compressions ?? throw new ArgumentNullException(nameof(compressions));
     }
 
     /// <summary>