Fix the exception that the consumer name is null.

.dockerignore

@@ -1,25 +0,0 @@
-**/.classpath
-**/.dockerignore
-**/.env
-**/.git
-**/.gitignore
-**/.project
-**/.settings
-**/.toolstarget
-**/.vs
-**/.vscode
-**/*.*proj.user
-**/*.dbmdl
-**/*.jfm
-**/azds.yaml
-**/bin
-**/charts
-**/docker-compose*
-**/Dockerfile*
-**/node_modules
-**/npm-debug.log
-**/obj
-**/secrets.dev.yaml
-**/values.dev.yaml
-LICENSE
-README.md

build/version.props

@@ -1,8 +1,8 @@
 <Project>
 	<PropertyGroup>
 		<VersionMajor>5</VersionMajor>
-		<VersionMinor>1</VersionMinor>
-		<VersionPatch>4</VersionPatch>
+		<VersionMinor>2</VersionMinor>
+		<VersionPatch>0</VersionPatch>
 		<VersionQuality></VersionQuality>
 		<VersionPrefix>$(VersionMajor).$(VersionMinor).$(VersionPatch)</VersionPrefix>
 	</PropertyGroup>

src/DotNetCore.CAP/CAP.Attribute.cs

@@ -1,39 +1,39 @@
-// Copyright (c) .NET Core Community. All rights reserved.
-// Licensed under the MIT License. See License.txt in the project root for license information.
-
-using System;
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using DotNetCore.CAP.Internal;
-
-// ReSharper disable once CheckNamespace
-namespace DotNetCore.CAP
-{
-    public class CapSubscribeAttribute : TopicAttribute
+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using DotNetCore.CAP.Internal;
+
+// ReSharper disable once CheckNamespace
+namespace DotNetCore.CAP
+{
+    public class CapSubscribeAttribute : TopicAttribute
     {
-        public CapSubscribeAttribute(string name, bool isPartial = false)
-            : base(name, isPartial)
+        public CapSubscribeAttribute(string name, bool isPartial = false)
+            : base(name, isPartial)
         {
 
         }
 
-        public override string ToString()
-        {
-            return Name;
-        }
-    }
-
-    [AttributeUsage(AttributeTargets.Parameter)]
-    public class FromCapAttribute : Attribute
-    {
-       
-    }
-
-    public class CapHeader : ReadOnlyDictionary<string, string>
-    {
-        public CapHeader(IDictionary<string, string> dictionary) : base(dictionary)
-        {
-
-        }
-    }
+        public override string ToString()
+        {
+            return Name;
+        }
+    }
+
+    [AttributeUsage(AttributeTargets.Parameter)]
+    public class FromCapAttribute : Attribute
+    {
+       
+    }
+
+    public class CapHeader : ReadOnlyDictionary<string, string>
+    {
+        public CapHeader(IDictionary<string, string> dictionary) : base(dictionary)
+        {
+
+        }
+    }
 }

src/DotNetCore.CAP/Internal/IConsumerServiceSelector.Default.cs

@@ -131,7 +131,7 @@ namespace DotNetCore.CAP.Internal
                 // Ignore partial attributes when no topic attribute is defined on class.
                 if (topicClassAttribute is null)
                 {
-                    topicMethodAttributes = topicMethodAttributes.Where(x => !x.IsPartial);
+                    topicMethodAttributes = topicMethodAttributes.Where(x => !x.IsPartial && x.Name != null);
                 }
 
                 if (!topicMethodAttributes.Any())
@@ -189,6 +189,11 @@ namespace DotNetCore.CAP.Internal
 
         private ConsumerExecutorDescriptor MatchUsingName(string key, IReadOnlyList<ConsumerExecutorDescriptor> executeDescriptor)
         {
+            if (key == null)
+            {
+                throw new ArgumentNullException(nameof(key));
+            }
+
             return executeDescriptor.FirstOrDefault(x => x.TopicName.Equals(key, StringComparison.InvariantCultureIgnoreCase));
         }