go.opentelemetry.io/otel/log

Added

• Add Recorder in go.opentelemetry.io/otel/log/logtest to facilitate testing the log bridge implementations. (#5134)
• Add span flags to OTLP spans and links exported by go.opentelemetry.io/otel/exporters/otlp/otlptrace. (#5194)
• Make the initial alpha release of go.opentelemetry.io/otel/sdk/log. This new module contains the Go implementation of the OpenTelemetry Logs SDK. This module is unstable and breaking changes may be introduced. See our versioning policy for more information about these stability guarantees. (#5240)
• Make the initial alpha release of go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp. This new module contains an OTLP exporter that transmits log telemetry using HTTP. This module is unstable and breaking changes may be introduced. See our versioning policy for more information about these stability guarantees. (#5240)
• Make the initial alpha release of go.opentelemetry.io/otel/exporters/stdout/stdoutlog. This new module contains an exporter prints log records to STDOUT. This module is unstable and breaking changes may be introduced. See our versioning policy for more information about these stability guarantees. (#5240)
• The go.opentelemetry.io/otel/semconv/v1.25.0 package. The package contains semantic conventions from the v1.25.0 version of the OpenTelemetry Semantic Conventions. (#5254)

Changed

• Update go.opentelemetry.io/proto/otlp from v1.1.0 to v1.2.0. (#5177)
• Improve performance of baggage member character validation in go.opentelemetry.io/otel/baggage. (#5214)
• The otel-collector example now uses docker compose to bring up services instead of kubernetes. (#5244)

Fixed

• Slice attribute values in go.opentelemetry.io/otel/attribute are now emitted as their JSON representation. (#5159)

Added

• Add WithProxy option in go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp. (#4906)
• Add WithProxy option in go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlptracehttp. (#4906)
• Add AddLink method to the Span interface in go.opentelemetry.io/otel/trace. (#5032)
• The Enabled method is added to the Logger interface in go.opentelemetry.io/otel/log. This method is used to notify users if a log record will be emitted or not. (#5071)
• Add SeverityUndefined const to go.opentelemetry.io/otel/log. This value represents an unset severity level. (#5072)
• Add Empty function in go.opentelemetry.io/otel/log to return a KeyValue for an empty value. (#5076)
• Add go.opentelemetry.io/otel/log/global to manage the global LoggerProvider. This package is provided with the anticipation that all functionality will be migrate to go.opentelemetry.io/otel when go.opentelemetry.io/otel/log stabilizes. At which point, users will be required to migrage their code, and this package will be deprecated then removed. (#5085)
• Add support for Summary metrics in the go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp and go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc exporters. (#5100)
• Add otel.scope.name and otel.scope.version tags to spans exported by go.opentelemetry.io/otel/exporters/zipkin. (#5108)
• Add support for AddLink to go.opentelemetry.io/otel/bridge/opencensus. (#5116)
• Add String method to Value and KeyValue in go.opentelemetry.io/otel/log. (#5117)
• Add Exemplar support to go.opentelemetry.io/otel/exporters/prometheus. (#5111)
• Add metric semantic conventions to go.opentelemetry.io/otel/semconv/v1.24.0. Future semconv packages will include metric semantic conventions as well. (#4528)

Changed

• SpanFromContext and SpanContextFromContext in go.opentelemetry.io/otel/trace no longer make a heap allocation when the passed context has no span. (#5049)
• go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc and go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc now create a gRPC client in idle mode and with "dns" as the default resolver using grpc.NewClient. (#5151) Because of that WithDialOption ignores grpc.WithBlock, grpc.WithTimeout, and grpc.WithReturnConnectionError. Notice that grpc.DialContext which was used before is now deprecated.

Fixed

• Clarify the documentation about equivalence guarantees for the Set and Distinct types in go.opentelemetry.io/otel/attribute. (#5027)
• Prevent default ErrorHandler self-delegation. (#5137)
• Update all dependencies to address [GO-2024-2687]. (#5139)

Removed

• Drop support for [Go 1.20]. (#4967)

Deprecated

• Deprecate go.opentelemetry.io/otel/attribute.Sortable type. (#4734)
• Deprecate go.opentelemetry.io/otel/attribute.NewSetWithSortable function. (#4734)
• Deprecate go.opentelemetry.io/otel/attribute.NewSetWithSortableFiltered function. (#4734)

This release is the last to support [Go 1.20]. The next release will require at least [Go 1.21].

Added

• Support [Go 1.22]. (#4890)
• Add exemplar support to go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc. (#4900)
• Add exemplar support to go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp. (#4900)
• The go.opentelemetry.io/otel/log module is added. This module includes OpenTelemetry Go's implementation of the Logs Bridge API. This module is in an alpha state, it is subject to breaking changes. See our versioning policy for more info. (#4961)
• Add ARM64 platform to the compatibility testing suite. (#4994)

Fixed

• Fix registration of multiple callbacks when using the global meter provider from go.opentelemetry.io/otel. (#4945)
• Fix negative buckets in output of exponential histograms. (#4956)