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Changelog - OpenTelemetry.Instrumentation.AWSLambda

Unreleased

1.16.0

Released 2026-Jun-18

  • Update System.Text.Json for netstandard2.0 to 8.0.5. (#4154)

  • Add instrumentation scope version and schema URL to traces. (#4063)

1.15.1

Released 2026-Apr-21

  • Fix faas.max_memory overflow for Lambda memory settings at or above 2048 MB. (#4125)

1.15.0

Released 2026-Jan-21

1.14.2

Released 2026-Jan-14

1.14.1

Released 2025-Dec-19

  • Fix issue when using ADOT auto-instrumentation which includes a version of OpenTelemetry.Instrumentation.AWSLambda in the Lambda layer. In this scenario nothing is forcing the NuGet resolution to include the updated version of Amazon.Lambda.Core that has the reworked logic for determining the trace id. (#3629)

1.14.0

Released 2025-Nov-13

  • Add support for .NET 10.0. (#2822)

  • Update Amazon.Lambda.Core dependency from 2.2.0 to 2.8.0 which reworks the internal logic for determining the trace id created by AWS Lambda. (#3410)

  • Update .NET 10.0 NuGet package versions from 10.0.0-rc.2.25502.107 to 10.0.0. (#3403)

  • Updated OpenTelemetry core component version(s) to 1.14.0. (#3403)

1.13.0

Released 2025-Oct-29

1.12.1

Released 2025-Sep-03

  • Add faas.instance and faas.max_memory resource/span attributes. (#2928)

1.12.0

Released 2025-May-06

1.11.3

Released 2025-May-01

1.11.2

Released 2025-Mar-18

  • Set initial capacity for AWS Semantic Convention Attribute Builder. (#2653)

1.11.1

Released 2025-Mar-05

1.11.0

Released 2025-Jan-29

1.10.0-rc.2

Released 2025-Jan-15

  • Trace instrumentation will not fail with an exception if empty LambdaContext instance is passed. (#2457)

1.10.0-rc.1

Released 2025-Jan-06

  • BREAKING: Change default Semantic Convention to 1.28
  • BREAKING: Remove option to use Legacy semantic conventions (the old default)

1.10.0-beta.3

Released 2024-Dec-20

  • Introduce AWSClientInstrumentationOptions.SemanticConventionVersion which provides a mechanism for developers to opt-in to newer versions of the of the Open Telemetry Semantic Conventions. (#2367)

1.10.0-beta.2

Released 2024-Dec-12

  • Trace instrumentation will now call the Activity.SetStatus API instead of the deprecated OpenTelemetry API package extension when setting span status. For details see: Setting Status. (#2358)

1.10.0-beta.1

Released 2024-Nov-23

  • Add detection of Lambda cold start and set faas.coldstart Activity tag. (#2037)
  • Add HTTP server span attributes for Application Loadbalancer triggers (#2033)
  • Drop support for .NET 6 as this target is no longer supported and add .NET 8/.NET Standard 2.0 targets. (#2140)
  • Add a direct reference to System.Text.Json at 6.0.10 for the netstandard2.0 target and at 8.0.5 for the net8.0 target. (#2203)

1.3.0-beta.1

Released 2024-Jan-26

  • BREAKING: ILambdaContext context argument of all tracing methods of OpenTelemetry.Instrumentation.AWSLambda.AWSLambdaWrapper was annotated as non-nullable.
  • Enabled null state analysis for OpenTelemetry.Instrumentation.AWSLambda. The interface will now contain attributes for null-state static analysis. If null state analysis is enabled in your depending project, you may encounter new warnings. (#1295)
  • BREAKING: Target net6.0 instead of netstandard2.0 (#1545)
  • Add support for native AoT. Amazon.Lambda.* NuGet package dependencies have been upgraded, see package dependencies for details. (#1544)

1.2.0-beta.1

Released 2023-Aug-07

  • BREAKING: AddAWSLambdaConfigurations no longer removes all existing resource attributes

  • BREAKING: Change dependency from OpenTelemetry.Contrib.Extensions.AWSXRay to OpenTelemetry.Extensions.AWS (#1289). This now requires at least OpenTelemetry 1.5.1.

  • Add explicit dependency on Newtonsoft.Json, upgrading the minimum version.

    This resolves a warning that some dependency analyzers may produce where this package would transitively depend on a vulnerable version of Newtonsoft.Json through Amazon.Lambda.APIGatewayEvents.

    This also avoids a potential issue where the instrumentation would try to call a Newtonsoft.Json function when no other package nor the app itself depends on Newtonsoft.Json, since the transitive dependency would be ignored unless using application were compiled against a TargetFramework older than Core 3.1.

1.1.0-beta.3

Released 2023-Jun-13

  • Add HTTP server span attributes for API Gateway triggers (#626)
  • Removes AddAWSLambdaConfigurations method with default configure parameter. (#943)
  • BREAKING (behavior): AddAWSLambdaConfigurations no longer calls AddService (#1080)
  • Added tracing of AWS Lambda handlers receiving SQS and SNS messages. (#1051)

1.1.0-beta.2

Released 2022-Sep-14

Release PR: #590 & #639.

This is the first release with the new package name OpenTelemetry.Instrumentation.AWSLambda.

  • BREAKING (API, behavior): Rename package to OpenTelemetry.Instrumentation.AWSLambda (remove .Contrib) (#593). This also affects the ActivitySource name (superseding #534).
  • Pre-release version numbering scheme changed from .betaN to beta.N (#639)
  • BREAKING (API): Move public class AWSLambdaWrapper out of Implementation subnamespace (#593)
  • BREAKING (API): Rename overloads of AWSLambdaWrapper.Trace that take an async handler to TraceAsync, to emphasize that they (usually) need to be awaited. (#608)
  • Rewrite of parent context handling and related changes (#408):
    • BREAKING (API): Remove AWSLambdaWrapper.Trace/TraceAsync overloads without ILambdaContext parameter.
    • BREAKING (behavior): Add automatic parent extraction from HTTP triggers (API Gateway Proxy events), using the configured global textmap propagator.
    • BREAKING (behavior): An activity is now also created if no parent context could be extracted (previously this package would only create activities if a valid parent span context could be extracted with X-Ray).
    • Add optional parent context (ActivityContext) to AWSLambdaWrapper.Trace/TraceAsync.
    • Add AWSLambdaInstrumentationOptions.DisableAwsXRayContextExtraction initialization option.
  • Add version to ActivitySource (#593)

1.1.0-beta1

Released 2021-May-26

This is the first release for the OpenTelemetry.Contrib.Instrumentation.AWSLambda project. The project targets v1.1.0-beta1 of the OpenTelemetry SDK.

The AWSLambda library includes extension and tracing APIs to configure resource detector and generate incoming AWS Lambda OTel span. For more details, please refer to the README