Merge branch 'dev'

Author: aws-sdk-dotnet-automation

CHANGELOG.md

@@ -1,3 +1,8 @@
+## Release 2026-04-16
+
+### Amazon.Lambda.Annotations (1.14.0)
+* Added [SNSEvent] annotation attribute for declaratively configuring SNS topic-triggered Lambda functions with support for topic reference, filter policy, and enabled state.
+
 ## Release 2026-04-14
 
 ### Amazon.Lambda.TestTool.BlazorTester (0.17.1)

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Amazon.Lambda.Annotations.SourceGenerator.csproj

@@ -20,7 +20,7 @@
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
     <IncludeBuildOutput>false</IncludeBuildOutput>
 
-    <Version>1.13.0</Version>
+    <Version>1.14.0</Version>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Diagnostics/AnalyzerReleases.Unshipped.md

@@ -21,3 +21,4 @@ AWSLambda0133 | AWSLambdaCSharpGenerator | Error | ALB Listener Reference Not Fo
 AWSLambda0134 | AWSLambdaCSharpGenerator | Error | FromRoute not supported on ALB functions
 AWSLambda0135 | AWSLambdaCSharpGenerator | Error | Unmapped parameter on ALB function
 AWSLambda0136 | AWSLambdaCSharpGenerator | Error | Invalid S3EventAttribute
+AWSLambda0138 | AWSLambdaCSharpGenerator | Error | Invalid SNSEventAttribute

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Diagnostics/DiagnosticDescriptors.cs

@@ -281,5 +281,12 @@ public static class DiagnosticDescriptors
             category: "AWSLambdaCSharpGenerator",
             DiagnosticSeverity.Error,
             isEnabledByDefault: true);
+
+        public static readonly DiagnosticDescriptor InvalidSnsEventAttribute = new DiagnosticDescriptor(id: "AWSLambda0138",
+            title: "Invalid SNSEventAttribute",
+            messageFormat: "Invalid SNSEventAttribute encountered: {0}",
+            category: "AWSLambdaCSharpGenerator",
+            DiagnosticSeverity.Error,
+            isEnabledByDefault: true);
     }
 }

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Models/Attributes/AttributeModelBuilder.cs

@@ -113,6 +113,15 @@ public static AttributeModel Build(AttributeData att, GeneratorExecutionContext
                     Type = TypeModelBuilder.Build(att.AttributeClass, context)
                 };
             }
+            else if (att.AttributeClass.Equals(context.Compilation.GetTypeByMetadataName(TypeFullNames.SNSEventAttribute), SymbolEqualityComparer.Default))
+            {
+                var data = SNSEventAttributeBuilder.Build(att);
+                model = new AttributeModel<SNS.SNSEventAttribute>
+                {
+                    Data = data,
+                    Type = TypeModelBuilder.Build(att.AttributeClass, context)
+                };
+            }
             else if (att.AttributeClass.Equals(context.Compilation.GetTypeByMetadataName(TypeFullNames.HttpApiAuthorizerAttribute), SymbolEqualityComparer.Default))
             {
                 var data = HttpApiAuthorizerAttributeBuilder.Build(att);

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Models/Attributes/SNSEventAttributeBuilder.cs

@@ -0,0 +1,43 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+using Amazon.Lambda.Annotations.SNS;
+using Microsoft.CodeAnalysis;
+using System;
+
+namespace Amazon.Lambda.Annotations.SourceGenerator.Models.Attributes
+{
+    /// <summary>
+    /// Builder for <see cref="SNSEventAttribute"/>.
+    /// </summary>
+    public class SNSEventAttributeBuilder
+    {
+        public static SNSEventAttribute Build(AttributeData att)
+        {
+            if (att.ConstructorArguments.Length != 1)
+            {
+                throw new NotSupportedException($"{TypeFullNames.SNSEventAttribute} must have constructor with 1 argument.");
+            }
+            var topic = att.ConstructorArguments[0].Value as string;
+            var data = new SNSEventAttribute(topic);
+
+            foreach (var pair in att.NamedArguments)
+            {
+                if (pair.Key == nameof(data.ResourceName) && pair.Value.Value is string resourceName)
+                {
+                    data.ResourceName = resourceName;
+                }
+                else if (pair.Key == nameof(data.FilterPolicy) && pair.Value.Value is string filterPolicy)
+                {
+                    data.FilterPolicy = filterPolicy;
+                }
+                else if (pair.Key == nameof(data.Enabled) && pair.Value.Value is bool enabled)
+                {
+                    data.Enabled = enabled;
+                }
+            }
+
+            return data;
+        }
+    }
+}

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Models/EventType.cs

@@ -9,6 +9,7 @@ public enum EventType
         API,
         S3,
         SQS,
+        SNS,
         DynamoDB,
         Schedule,
         Authorizer,

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/Models/EventTypeBuilder.cs

@@ -34,6 +34,10 @@ public static HashSet<EventType> Build(IMethodSymbol lambdaMethodSymbol,
                 {
                     events.Add(EventType.S3);
                 }
+                else if (attribute.AttributeClass.ToDisplayString() == TypeFullNames.SNSEventAttribute)
+                {
+                    events.Add(EventType.SNS);
+                }
                 else if (attribute.AttributeClass.ToDisplayString() == TypeFullNames.HttpApiAuthorizerAttribute
                     || attribute.AttributeClass.ToDisplayString() == TypeFullNames.RestApiAuthorizerAttribute)
                 {

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/SyntaxReceiver.cs

@@ -27,7 +27,8 @@ internal class SyntaxReceiver : ISyntaxContextReceiver
             { "FunctionUrlAttribute", "FunctionUrl" },
             { "SQSEventAttribute", "SQSEvent" },
             { "ALBApiAttribute", "ALBApi" },
-            { "S3EventAttribute", "S3Event" }
+            { "S3EventAttribute", "S3Event" },
+            { "SNSEventAttribute", "SNSEvent" }
         };
 
         public List<MethodDeclarationSyntax> LambdaMethods { get; } = new List<MethodDeclarationSyntax>();

Libraries/src/Amazon.Lambda.Annotations.SourceGenerator/TypeFullNames.cs

@@ -62,6 +62,9 @@ public static class TypeFullNames
         public const string S3Event = "Amazon.Lambda.S3Events.S3Event";
         public const string S3EventAttribute = "Amazon.Lambda.Annotations.S3.S3EventAttribute";
 
+        public const string SNSEvent = "Amazon.Lambda.SNSEvents.SNSEvent";
+        public const string SNSEventAttribute = "Amazon.Lambda.Annotations.SNS.SNSEventAttribute";
+
         public const string LambdaSerializerAttribute = "Amazon.Lambda.Core.LambdaSerializerAttribute";
         public const string DefaultLambdaSerializer = "Amazon.Lambda.Serialization.SystemTextJson.DefaultLambdaJsonSerializer";
 
@@ -91,7 +94,8 @@ public static class TypeFullNames
             FunctionUrlAttribute,
             SQSEventAttribute,
             ALBApiAttribute,
-            S3EventAttribute
+            S3EventAttribute,
+            SNSEventAttribute
         };
     }
 }