Release v1.38.0

[MrAlias]

This release is the last to support Go 1.23. The next release will require at least Go 1.24.

Added

• Add v2 version of AWS EC2 detector go.opentelemetry.io/contrib/detectors/aws/ec2/v2 due to deprecation of github.com/aws/aws-sdk-go. (ec2 detector v2 #6961)
• Add the unit ns to deprecated runtime metrics process.runtime.go.gc.pause_total_ns and process.runtime.go.gc.pause_ns in go.opentelemetry.io/contrib/instrumentation/runtime. (runtime: add ns unit to deprecated runtime metrics #7490)
• The go.opentelemetry.io/contrib/detectors/autodetect package is added to automatically compose user defined resource.Detectors at runtime. (Add the detectors/autodetect package #7522)
• Add the WithLoggerProviderOptions, WithMeterProviderOptions and WithTracerProviderOptions options to NewSDK to allow passing custom options to providers in go.opentelemetry.io/contrib/otelconf. (otelconf/v0.3.0: add support for provider options #7552)
• Set SeverityText field to logrus hook in go.opentelemetry.io/contrib/bridges/otellogrus. (otellogrus: set SeverityText field to logrus hook #7553)
• Add the WithTraceAttributeFn option to go.opentelemetry.io/contrib/instrumentation/github.com/aws/aws-lambda-go/otellambda. (otellambda: allow custom attributes #7556)
• Add support for HTTP server metrics in go.opentelemetry.io/contrib/instrumentation/github.com/labstack/echo/otelecho. (feat(otelecho): add HTTP server metrics support for echo instrumentation #7668)
• Support testing of [Go 1.25]. (Support Go 1.25 #7732)

Changed

• Change the default span name to be GET /path so it complies with the HTTP semantic conventions in go.opentelemetry.io/contrib/instrumentation/github.com/gorilla/mux/otelmux. (update mux default span name to include http method #7551)
• Transform attribute values of go.opentelemetry.io/otel/attribute.Value and go.opentelemetry.io/otel/log.Value types to appropriate go.opentelemetry.io/otel/log.Value type instead of log.StringValue in the modules below. (logutil: convert standard and log attributes #7660)
  • go.opentelemetry.io/contrib/bridges/otellogr
  • go.opentelemetry.io/contrib/bridges/otellogrus
  • go.opentelemetry.io/contrib/bridges/otelslog
  • go.opentelemetry.io/contrib/bridges/otelzap
• The Severity type from go.opentelemetry.io/contrib/processors/minsev now implements the fmt.Stringer, encoding.TextMarshaler, encoding.TextUnmarshaler, encoding.TextAppender, json.Marshaler, and json.Unmarshaler interfaces. (Support text interchange with minsev severity #7652)
• The SeverityVar type from go.opentelemetry.io/contrib/processors/minsev now implements the fmt.Stringer, encoding.TextMarshaler, encoding.TextUnmarshaler, and encoding.TextAppender interfaces. (Support text interchange with minsev severity #7652)
• Change the faas.max_memory unit to be bytes instead of MB to comply with the semantic conventions in go.opentelemetry.io/contrib/detectors/aws/lambda. (Update lambda detector to use bytes instead of MB #7745)
• Severity.Severity() in go.opentelemetry.io/contrib/processors/minsev now returns log.SeverityTrace1 for severities less than minsev.SeverityTrace1 and log.SeverityFatal4 for severities greater than minsev.SeverityFatal4 instead of log.SeverityUndefined. All other conversions are the same. (Clamp minsev Severity.Severity() conversion #7748)

Fixed

• Improve the ECS detector correctness in go.opentelemetry.io/contrib/detectors/aws/ecs. (Updated ECS detector containerID logic #7607)

Deprecated

• WithSpanOptions in go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc is deprecated. It is only used by the deprecated interceptor, and is unused by NewClientHandler and NewServerHandler. (deprecate SpanStartOption #7601)
• Extract and Inject in go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc are deprecated. These functions were initially exposed in the public API, but are now considered unnecessary. (Fix deprecation of Extract/Inject in otelgrpc #7689)
• The go.opentelemetry.io/contrib/detectors/aws/ec2 package is deprecated, use go.opentelemetry.io/contrib/detectors/aws/ec2/v2 instead. (Deprecate the go.opentelemetry.io/contrib/detectors/aws/ec2 module #7725)

Removed

• Remove support for the OTEL_SEMCONV_STABILITY_OPT_IN environment variable as well as support for semantic conventions v1.20.0 in the modules below. (Remove dup semconv support from HTTP packages #7584)
  • go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful
  • go.opentelemetry.io/contrib/instrumentation/github.com/gin-gonic/gin/otelgin
  • go.opentelemetry.io/contrib/instrumentation/github.com/gorilla/mux/otelmux
  • go.opentelemetry.io/contrib/instrumentation/github.com/labstack/echo/otelecho
  • go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace
  • go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp
• The deprecated StreamClientInterceptor function from go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc is removed. (Remove the deprecated otelgrpc.StreamClientInterceptor #7646)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.0%. Comparing base (e84e5f0) to head (7a8939f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #7827   +/-   ##
=====================================
  Coverage   79.0%   79.0%           
=====================================
  Files        186     186           
  Lines      14871   14871           
=====================================
  Hits       11751   11751           
  Misses      2780    2780           
  Partials     340     340           

Files with missing lines	Coverage Δ
detectors/aws/ec2/version.go	60.0% <100.0%> (ø)
detectors/aws/ecs/version.go	60.0% <100.0%> (ø)
detectors/aws/eks/version.go	60.0% <100.0%> (ø)
detectors/gcp/version.go	60.0% <100.0%> (ø)
...github.com/aws/aws-lambda-go/otellambda/version.go	100.0% <100.0%> (ø)
...on/github.com/aws/aws-sdk-go-v2/otelaws/version.go	100.0% <100.0%> (ø)
...hub.com/emicklei/go-restful/otelrestful/version.go	100.0% <100.0%> (ø)
...tation/github.com/gin-gonic/gin/otelgin/version.go	100.0% <100.0%> (ø)
...entation/github.com/gorilla/mux/otelmux/version.go	100.0% <100.0%> (ø)
...ation/github.com/labstack/echo/otelecho/version.go	100.0% <100.0%> (ø)
... and 16 more

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