3.40.0

Summary

• [Runtime Metrics] Enables Runtime Metrics by Default for .NET 6+ (#8267)
• [Tracing] Add interoperability between the Datadog Baggage API and the OpenTelemetry Baggage API (#7921)
• Add support for Microsoft.Data.SqlClient 7.x.x (#8346)

Changes

Tracer

• Refactor log directory resolution into smaller methods, add tests (#7255)
• Adjust Log levels in OltpExporter (#8133)
• [Metrics] Fixing sync-over-async patterns in DogStatsD Client Fork (#8265)
• Add _dd.svc_src meta tag to track service name source (#8274)
• Add process tags to service discovery (#8295)
• Add "manual" service source (#8302)
• ServiceNameSource for inferred proxy (#8309)

CI Visibility

• [CI Visibility] honor EFD retry mode over ATR (#8288)

Continuous Profiler

• [Profiler] Add unit tests for ManagedCodeCache (#8307)

Debugger

• [Dynamic Instrumentation] DEBUG-5317 fix snapshot stackoverflow in collection (#8310)
• [Dynamic Instrumentation] Add detailed diagnostics for line probe resolution (#8316)

Fixes

• More remote config performance improvements (#8241)
• WCF cleanup and trace context extraction (#8263)

Data Streams Monitoring

• Support adding kafka_cluster_id for Confluent.Kafka (#7702)
• [DSM] Include container tags hash in node hash calculation (#8163)

Miscellaneous

• [Tracing] Add interoperability between the Datadog Baggage API and the OpenTelemetry Baggage API (#7921)
• [Process Tags] Explicit whether the service name is the default one (#8106)
• Add an IArrayPool<char> implementation for vendored Newtonsoft.JSON (#8228)
• Use IArrayPool in more places for JSON (#8236)
• Remote configuration tests and performance improvements (#8237)
• Reduce payload size sent by agent in remote config (#8238)
• [Agent Skill] Rename to analyze-azdo-build, add retry support, and more (#8247)
• [Metrics] Send Diagnostics GC Pause Time as Counter instead of Timer (#8266)
• [Runtime Metrics] Enables Runtime Metrics by Default for .NET 6+ (#8267)
• Rename telemetry GetData methods to GetIncrementalData (#8269)
• Remove unnecessary use of duck typing in HTTP integrations (#8275)
• Exclude Otel for MongoDb 3.7 (#8279)
• Detect whether an app has been trimmed (#8281)
• [Agent Docs] Clean up AGENTS.md: fix stale reference, consolidate structure (#8290)
• Add some documentation on running system-tests (#8298)
• Update local smoke testing docs (#8311)
• [Tracer] Add Component Tag to Quartz Instrumentation (#8315)
• [AI Agents] Remove plugin settings from shared Claude Code config (#8343)
• Add support for Microsoft.Data.SqlClient 7.x.x (#8346)
• Attempt to fix macOS runner native build (#8348)

Build / Test

• (CI) Migrating benchmark-serverless CI job to short-lived tokens (#8219)
• Update Wix to 5.x.x (#8268)
• Allow generating a snapshot of the MSI contents (#8270)
• Move running of smoke tests to Nuke (#8271)
• Enable performance analyzers for Datadog.Trace (#8276)
• [Test Package Versions Bump] Updating package versions (#8278)
• Retry ChromeDriver startup in Selenium tests (#8284)
• Fix Datadog.Trace.Annotations dependency version in Datadog.AzureFunctions nuspec (#8285)
• Ban SetVersion/SetVersionPrefix/SetVersionSuffix in Nuke Build (#8289)
• Only allow creating hotfix branches from a tag (#8297)
• Bump test dependencies and add test.final_status to benchmark exporter (#8301)
• Update FeatureFlagsEvaluator and Debugger ToUUID to not violate CA1850 (#8303)
• [Test Package Versions Bump] Updating package versions (#8306)
• Relax concurrent TagsList stress test (#8317)
• Replace our custom GitHub App Token with dd-octo-sts (#8318)
• Fix GeneratePackageVersions so that it correctly respects IncludePackages and ExcludePackages (#8340)

Changes since 3.39.0