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aws-sdk-dotnet-automation merged 3 commits into from
Feb 4, 2026
Merged

Update libicu on Lambda container images #2273

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91dbc04
Update libicu on Lambda container images
philasmar Feb 3, 2026
baf52d0
Rename Amazon.Lambda.RuntimeSupport to Amazon.Lambda.RuntimeSupport.T…
normj Feb 4, 2026
cca0f6e
Release 2026-02-04 (#2274)
aws-sdk-dotnet-automation Feb 4, 2026
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9 changes: 9 additions & 0 deletions CHANGELOG.md
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@@ -1,3 +1,12 @@
## Release 2026-02-04

### Amazon.Lambda.Core (2.8.1)
* Add the InternalsVisibleToAttribute to the renamed version of Amazon.Lambda.RuntimeSupport embedded with the Lambda Test Tool
### Amazon.Lambda.RuntimeSupport (1.14.2)
* Add defensive checks for scenarios where a Lambda function uses an older Amazon.Lambda.Core together with the renamed Amazon.Lambda.RuntimeSupport.TestTool assembly embedded in the Lambda Test Tool
### Amazon.Lambda.TestTool (0.12.0)
* Rename embedded Amazon.Lambda.RuntimeSupport assembly to Amazon.Lambda.RuntimeSupport.TestTool to avoid conflicts with Lambda function that might include Amazon.Lambda.RuntimeSupport

## Release 2026-01-30

### Amazon.Lambda.TestTool.BlazorTester (0.17.0)
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2 changes: 1 addition & 1 deletion LambdaRuntimeDockerfiles/Images/net10/amd64/Dockerfile
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Expand Up @@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023

FROM $AMAZON_LINUX AS base

RUN dnf install libicu-67.1-7.amzn2023.0.3.x86_64 --assumeyes
RUN dnf install libicu-67.1-7.amzn2023.0.4.x86_64 --assumeyes

FROM base AS builder-net10
ARG ASPNET_VERSION
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2 changes: 1 addition & 1 deletion LambdaRuntimeDockerfiles/Images/net10/arm64/Dockerfile
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Expand Up @@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023

FROM $AMAZON_LINUX AS base

RUN dnf install libicu-67.1-7.amzn2023.0.3.aarch64 --assumeyes
RUN dnf install libicu-67.1-7.amzn2023.0.4.aarch64 --assumeyes

FROM base AS builder-net10
ARG ASPNET_VERSION
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2 changes: 1 addition & 1 deletion LambdaRuntimeDockerfiles/Images/net8/amd64/Dockerfile
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Expand Up @@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023

FROM $AMAZON_LINUX AS base

RUN dnf install libicu-67.1-7.amzn2023.0.3.x86_64 --assumeyes
RUN dnf install libicu-67.1-7.amzn2023.0.4.x86_64 --assumeyes

FROM base AS builder-net8
ARG ASPNET_VERSION
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2 changes: 1 addition & 1 deletion LambdaRuntimeDockerfiles/Images/net8/arm64/Dockerfile
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Expand Up @@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023

FROM $AMAZON_LINUX AS base

RUN dnf install libicu-67.1-7.amzn2023.0.3.aarch64 --assumeyes
RUN dnf install libicu-67.1-7.amzn2023.0.4.aarch64 --assumeyes

FROM base AS builder-net8
ARG ASPNET_VERSION
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2 changes: 1 addition & 1 deletion LambdaRuntimeDockerfiles/Images/net9/amd64/Dockerfile
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Expand Up @@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023

FROM $AMAZON_LINUX AS base

RUN dnf install libicu-67.1-7.amzn2023.0.3.x86_64 --assumeyes
RUN dnf install libicu-67.1-7.amzn2023.0.4.x86_64 --assumeyes

FROM base AS builder-net9
ARG ASPNET_VERSION
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2 changes: 1 addition & 1 deletion LambdaRuntimeDockerfiles/Images/net9/arm64/Dockerfile
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Expand Up @@ -8,7 +8,7 @@ ARG AMAZON_LINUX=public.ecr.aws/lambda/provided:al2023

FROM $AMAZON_LINUX AS base

RUN dnf install libicu-67.1-7.amzn2023.0.3.aarch64 --assumeyes
RUN dnf install libicu-67.1-7.amzn2023.0.4.aarch64 --assumeyes

FROM base AS builder-net9
ARG ASPNET_VERSION
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5 changes: 4 additions & 1 deletion Libraries/src/Amazon.Lambda.Core/Amazon.Lambda.Core.csproj
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Expand Up @@ -6,7 +6,7 @@
<TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
<Description>Amazon Lambda .NET Core support - Core package.</Description>
<AssemblyTitle>Amazon.Lambda.Core</AssemblyTitle>
<Version>2.8.0</Version>
<Version>2.8.1</Version>
<AssemblyName>Amazon.Lambda.Core</AssemblyName>
<PackageId>Amazon.Lambda.Core</PackageId>
<PackageTags>AWS;Amazon;Lambda</PackageTags>
Expand All @@ -18,6 +18,9 @@
<AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
<_Parameter1>Amazon.Lambda.RuntimeSupport, PublicKey="0024000004800000940000000602000000240000525341310004000001000100db5f59f098d27276c7833875a6263a3cc74ab17ba9a9df0b52aedbe7252745db7274d5271fd79c1f08f668ecfa8eaab5626fa76adc811d3c8fc55859b0d09d3bc0a84eecd0ba891f2b8a2fc55141cdcc37c2053d53491e650a479967c3622762977900eddbf1252ed08a2413f00a28f3a0752a81203f03ccb7f684db373518b4"</_Parameter1>
</AssemblyAttribute>
<AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
<_Parameter1>Amazon.Lambda.RuntimeSupport.TestTool, PublicKey="0024000004800000940000000602000000240000525341310004000001000100db5f59f098d27276c7833875a6263a3cc74ab17ba9a9df0b52aedbe7252745db7274d5271fd79c1f08f668ecfa8eaab5626fa76adc811d3c8fc55859b0d09d3bc0a84eecd0ba891f2b8a2fc55141cdcc37c2053d53491e650a479967c3622762977900eddbf1252ed08a2413f00a28f3a0752a81203f03ccb7f684db373518b4"</_Parameter1>
</AssemblyAttribute>
<AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
<_Parameter1>Amazon.Lambda.RuntimeSupport.UnitTests, PublicKey="0024000004800000940000000602000000240000525341310004000001000100db5f59f098d27276c7833875a6263a3cc74ab17ba9a9df0b52aedbe7252745db7274d5271fd79c1f08f668ecfa8eaab5626fa76adc811d3c8fc55859b0d09d3bc0a84eecd0ba891f2b8a2fc55141cdcc37c2053d53491e650a479967c3622762977900eddbf1252ed08a2413f00a28f3a0752a81203f03ccb7f684db373518b4"</_Parameter1>
</AssemblyAttribute>
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10 changes: 8 additions & 2 deletions Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj
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Expand Up @@ -4,10 +4,9 @@

<PropertyGroup>
<TargetFrameworks>netstandard2.0;net6.0;net8.0;net9.0;net10.0</TargetFrameworks>
<Version>1.14.1</Version>
<Version>1.14.2</Version>
<Description>Provides a bootstrap and Lambda Runtime API Client to help you to develop custom .NET Core Lambda Runtimes.</Description>
<AssemblyTitle>Amazon.Lambda.RuntimeSupport</AssemblyTitle>
<AssemblyName>Amazon.Lambda.RuntimeSupport</AssemblyName>
<PackageId>Amazon.Lambda.RuntimeSupport</PackageId>
<PackageTags>AWS;Amazon;Lambda</PackageTags>
<PackageReadmeFile>README.md</PackageReadmeFile>
Expand All @@ -24,6 +23,13 @@
<CheckEolTargetFramework>false</CheckEolTargetFramework>
</PropertyGroup>

<PropertyGroup Condition=" '$(AlternateAssemblyName)'!='' ">
<AssemblyName>$(AlternateAssemblyName)</AssemblyName>
</PropertyGroup>
<PropertyGroup Condition=" '$(AlternateAssemblyName)'=='' ">
<AssemblyName>Amazon.Lambda.RuntimeSupport</AssemblyName>
</PropertyGroup>

<PropertyGroup Condition=" '$(ExecutableOutputType)'=='true' ">
<OutputType>Exe</OutputType>
<DefineConstants>$(DefineConstants);ExecutableOutputType</DefineConstants>
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24 changes: 23 additions & 1 deletion Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/LambdaBootstrap.cs
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Expand Up @@ -235,6 +235,18 @@ internal LambdaBootstrap(HttpClient httpClient, LambdaBootstrapHandler handler,
{
registry = SnapstartHelperCopySnapshotCallbacksIsolated.CopySnapshotCallbacks();
}
catch (MethodAccessException ex)
{
// This would happen with the Lambda test tool when the Amazon.Lambda.RuntimeSupport assembly
// was renamed when embedded into the test tool. The renamed assembly would cause this error
// since older versions Amazon.Lambda.Core used in the customer's function would not have provided
// access to the internals for the renamed assembly version.
Client.ConsoleLogger.FormattedWriteLine(
Amazon.Lambda.RuntimeSupport.Helpers.LogLevelLoggerWriter.LogLevel.Error.ToString(),
"Failed to retrieve snapshot hooks from Amazon.Lambda.Core.SnapshotRestore, " +
$"this can be fixed by updating the version of Amazon.Lambda.Core: {ex}",
null);
}
catch (TypeLoadException ex)
{
Client.ConsoleLogger.FormattedWriteLine(
Expand Down Expand Up @@ -441,14 +453,24 @@ private void SetInvocationTraceId(string traceId)
{
TraceProviderIsolated.SetCurrentTraceId(traceId);
}
catch (MethodAccessException)
{
// This would happen with the Lambda test tool when the Amazon.Lambda.RuntimeSupport assembly
// was renamed when embedded into the test tool. The renamed assembly would cause this error
// since older versions Amazon.Lambda.Core used in the customer's function would not have provided
// access to the internals for the renamed assembly version.
_disableTraceProvider = true;
_logger.LogInformation("Failed to set the trace id on Amazon.Lambda.Core.LambdaTraceProvider due to the version of " +
"Amazon.Lambda.Core being provided by Lambda Function being out of date.");
}
catch (TypeLoadException)
{
// Disable attempting to set trace id in the future. If we got a TypeLoadException then setting the
// trace id will never work in the future. Avoid triggering exceptions for every invocation.
_disableTraceProvider = true;
_logger.LogInformation("Failed to set the trace id on Amazon.Lambda.Core.LambdaTraceProvider due to the version of " +
"Amazon.Lambda.Core being provided by Lambda Function being out of date.");
}
}
}
}

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7 changes: 4 additions & 3 deletions Tools/LambdaTestTool-v2/README.md
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Expand Up @@ -268,7 +268,7 @@ Configure the Lambda function to use the test tool:
"LambdaRuntimeClient_FunctionHandler": {
"workingDirectory": ".\\bin\\$(Configuration)\\net8.0",
"commandName": "Executable",
"commandLineArgs": "exec --depsfile ./MyLambdaFunction.deps.json --runtimeconfig ./MyLambdaFunction.runtimeconfig.json %USERPROFILE%/.dotnet/tools/.store/amazon.lambda.testtool/{TEST_TOOL_VERSION}/amazon.lambda.testtool/{TEST_TOOL_VERSION}/content/Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.dll MyLambdaFunction::MyLambdaFunction.Function::Add",
"commandLineArgs": "exec --depsfile ./MyLambdaFunction.deps.json --runtimeconfig ./MyLambdaFunction.runtimeconfig.json %USERPROFILE%/.dotnet/tools/.store/amazon.lambda.testtool/{TEST_TOOL_VERSION}/amazon.lambda.testtool/{TEST_TOOL_VERSION}/content/Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.TestTool.dll MyLambdaFunction::MyLambdaFunction.Function::Add",
"executablePath": "dotnet",
"environmentVariables": {
"AWS_LAMBDA_RUNTIME_API": "localhost:5050/AddLambdaFunction"
Expand All @@ -288,7 +288,8 @@ There are three variables you need to update in the launch settings:
2. `{TARGET_FRAMEWORK}` - Replace with your Lambda project's target framework version (e.g., `net8.0` in the example above)
- This appears in two places:
- The working directory: `.\\bin\\$(Configuration)\\{TARGET_FRAMEWORK}`
- The runtime support DLL path: `Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.dll`
- The runtime support DLL path: `Amazon.Lambda.RuntimeSupport/{TARGET_FRAMEWORK}/Amazon.Lambda.RuntimeSupport.TestTool.dll`
- **Note: For the test tool the Amazon.Lambda.RuntimeSupport.dll assembly was renamed to Amazon.Lambda.RuntimeSupport.TestTool.dll to avoid conflicts with versions of Amazon.Lambda.RuntimeSupport used by the Lambda function itself.**

3. `{FUNCTION_HANDLER}` - Replace with your function's handler using the format: `<project_name>::<namespace>.<class>::<method_name>`
- Example: `MyLambdaFunction::MyLambdaFunction.Function::Add`
Expand Down Expand Up @@ -341,4 +342,4 @@ The Test Tool provides users with the ability to save Lambda requests for quick

In order to enable saving requests, you will need to provide a storage path during the test tool startup.

You can use the command line argument `--config-storage-path <absolute-path>` to specify the storage path.
You can use the command line argument `--config-storage-path <absolute-path>` to specify the storage path.
4 changes: 2 additions & 2 deletions Tools/LambdaTestTool-v2/src/Amazon.Lambda.TestTool/Amazon.Lambda.TestTool.csproj
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Expand Up @@ -15,7 +15,7 @@
<PackAsTool>true</PackAsTool>
<PackageId>Amazon.Lambda.TestTool</PackageId>
<ToolCommandName>dotnet-lambda-test-tool</ToolCommandName>
<Version>0.11.1</Version>
<Version>0.12.0</Version>
<NoWarn>NU5100</NoWarn>
<RollForward>Major</RollForward>
<PackageReadmeFile>README.md</PackageReadmeFile>
Expand Down Expand Up @@ -47,7 +47,7 @@
</Target>

<Target Name="PublishRuntimeSupportFiles" DependsOnTargets="GetRuntimeSupportTargetFrameworks" BeforeTargets="Build">
<Exec Command="dotnet publish &quot;$(MSBuildThisFileDirectory)../../../../Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj&quot; -c $(Configuration) -f %(TargetFrameworks.Identity) /p:ExecutableOutputType=true" />
<Exec Command="dotnet publish &quot;$(MSBuildThisFileDirectory)../../../../Libraries/src/Amazon.Lambda.RuntimeSupport/Amazon.Lambda.RuntimeSupport.csproj&quot; -c $(Configuration) -f %(TargetFrameworks.Identity) /p:ExecutableOutputType=true /p:AlternateAssemblyName=Amazon.Lambda.RuntimeSupport.TestTool" />
</Target>

<Target Name="CopyRuntimeSupportFiles" DependsOnTargets="GetRuntimeSupportTargetFrameworks" BeforeTargets="_GetPackageFiles">
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6 changes: 3 additions & 3 deletions Tools/LambdaTestTool-v2/tests/Amazon.Lambda.TestTool.UnitTests/PackagingTests.cs
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Expand Up @@ -144,9 +144,9 @@ public void VerifyPackageContentsHasRuntimeSupport()
var essentialFiles = new[]
{
$"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.Core.dll",
$"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.dll",
$"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.deps.json",
$"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.runtimeconfig.json"
$"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.TestTool.dll",
$"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.TestTool.deps.json",
$"content/Amazon.Lambda.RuntimeSupport/{framework}/Amazon.Lambda.RuntimeSupport.TestTool.runtimeconfig.json"
};

var missingFiles = essentialFiles.Where(f => !frameworkFiles.Contains(f)).ToList();
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