go.opentelemetry.io/otel

Added

• Add example for go.opentelemetry.io/otel/exporters/stdout/stdoutlog. (#5242)
• Add RecordFactory in go.opentelemetry.io/otel/sdk/log/logtest to facilitate testing exporter and processor implementations. (#5258)
• Add RecordFactory in go.opentelemetry.io/otel/log/logtest to facilitate testing bridge implementations. (#5263)
• The count of dropped records from the BatchProcessor in go.opentelemetry.io/otel/sdk/log is logged. (#5276)
• Add metrics in the otel-collector example. (#5283)
• Add the synchronous gauge instrument to go.opentelemetry.io/otel/metric. (#5304)
  • An int64 or float64 synchronous gauge instrument can now be created from a Meter.
  • All implementations of the API (go.opentelemetry.io/otel/metric/noop, go.opentelemetry.io/otel/sdk/metric) are updated to support this instrument.
• Add logs to go.opentelemetry.io/otel/example/dice. (#5349)

Changed

• The Shutdown method of Exporter in go.opentelemetry.io/otel/exporters/stdout/stdouttrace ignores the context cancellation and always returns nil. (#5189)
• The ForceFlush and Shutdown methods of the exporter returned by New in go.opentelemetry.io/otel/exporters/stdout/stdoutmetric ignore the context cancellation and always return nil. (#5189)
• Apply the value length limits to Record attributes in go.opentelemetry.io/otel/sdk/log. (#5230)
• De-duplicate map attributes added to a Record in go.opentelemetry.io/otel/sdk/log. (#5230)
• go.opentelemetry.io/otel/exporters/stdout/stdoutlog won't print timestamps when WithoutTimestamps option is set. (#5241)
• The go.opentelemetry.io/otel/exporters/stdout/stdoutlog exporter won't print AttributeValueLengthLimit and AttributeCountLimit fields now, instead it prints the DroppedAttributes field. (#5272)
• Improved performance in the Stringer implementation of go.opentelemetry.io/otel/baggage.Member by reducing the number of allocations. (#5286)
• Set the start time for last-value aggregates in go.opentelemetry.io/otel/sdk/metric. (#5305)
• The Span in go.opentelemetry.io/otel/sdk/trace will record links without span context if either non-empty TraceState or attributes are provided. (#5315)
• Upgrade all dependencies of go.opentelemetry.io/otel/semconv/v1.24.0 to go.opentelemetry.io/otel/semconv/v1.25.0. (#5374)

Fixed

• Comparison of unordered maps for go.opentelemetry.io/otel/log.KeyValue and go.opentelemetry.io/otel/log.Value. (#5306)
• Fix the empty output of go.opentelemetry.io/otel/log.Value in go.opentelemetry.io/otel/exporters/stdout/stdoutlog. (#5311)
• Split the behavior of Recorder in go.opentelemetry.io/otel/log/logtest so it behaves as a LoggerProvider only. (#5365)
• Fix wrong package name of the error message when parsing endpoint URL in go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp. (#5371)
• Identify the Logger returned from the global LoggerProvider in go.opentelemetry.io/otel/log/global with its schema URL. (#5375)

Added

• RecordError method on Spans in the trace API to Simplify adding error events to spans. (#473)
• Configurable push frequency for exporters setup pipeline. (#504)

Changed

• Rename the exporter directory to exporters. The go.opentelemetry.io/otel/exporter/trace/jaeger package was mistakenly released with a v1.0.0 tag instead of v0.1.0. This resulted in all subsequent releases not becoming the default latest. A consequence of this was that all go gets pulled in the incompatible v0.1.0 release of that package when pulling in more recent packages from other otel packages. Renaming the exporter directory to exporters fixes this issue by renaming the package and therefore clearing any existing dependency tags. Consequentially, this action also renames all exporter packages. (#502)

Removed

• The CorrelationContextHeader constant in the correlation package is no longer exported. (#503)

Added

• HTTPSupplier interface in the propagation API to specify methods to retrieve and store a single value for a key to be associated with a carrier. (#467)
• HTTPExtractor interface in the propagation API to extract information from an HTTPSupplier into a context. (#467)
• HTTPInjector interface in the propagation API to inject information into an HTTPSupplier. (#467)
• Config and configuring Option to the propagator API. (#467)
• Propagators interface in the propagation API to contain the set of injectors and extractors for all supported carrier formats. (#467)
• HTTPPropagator interface in the propagation API to inject and extract from an HTTPSupplier. (#467)
• WithInjectors and WithExtractors functions to the propagator API to configure injectors and extractors to use. (#467)
• ExtractHTTP and InjectHTTP functions to apply configured HTTP extractors and injectors to a passed context. (#467)
• Histogram aggregator. (#433)
• DefaultPropagator function and have it return trace.TraceContext as the default context propagator. (#456)
• AlwaysParentSample sampler to the trace API. (#455)
• WithNewRoot option function to the trace API to specify the created span should be considered a root span. (#451)

Changed

• Renamed WithMap to ContextWithMap in the correlation package. (#481)
• Renamed FromContext to MapFromContext in the correlation package. (#481)
• Move correlation context propagation to correlation package. (#479)
• Do not default to putting remote span context into links. (#480)
• Tracer.WithSpan updated to accept StartOptions. (#472)
• Renamed MetricKind to Kind to not stutter in the type usage. (#432)
• Renamed the export package to metric to match directory structure. (#432)
• Rename the api/distributedcontext package to api/correlation. (#444)
• Rename the api/propagators package to api/propagation. (#444)
• Move the propagators from the propagators package into the trace API package. (#444)
• Update Float64Gauge, Int64Gauge, Float64Counter, Int64Counter, Float64Measure, and Int64Measure metric methods to use value receivers instead of pointers. (#462)
• Moved all dependencies of tools package to a tools directory. (#466)

Removed

• Binary propagators. (#467)
• NOOP propagator. (#467)

Fixed

• Upgraded github.com/golangci/golangci-lint from v1.21.0 to v1.23.6 in tools/. (#492)
• Fix a possible nil-dereference crash (#478)
• Correct comments for InstallNewPipeline in the stdout exporter. (#483)
• Correct comments for InstallNewPipeline in the dogstatsd exporter. (#484)
• Correct comments for InstallNewPipeline in the prometheus exporter. (#482)
• Initialize onError based on Config in prometheus exporter. (#486)
• Correct module name in prometheus exporter README. (#475)
• Removed tracer name prefix from span names. (#430)
• Fix aggregator_test.go import package comment. (#431)
• Improved detail in stdout exporter. (#436)
• Fix a dependency issue (generate target should depend on stringer, not lint target) in Makefile. (#442)
• Reorders the Makefile targets within precommit target so we generate files and build the code before doing linting, so we can get much nicer errors about syntax errors from the compiler. (#442)
• Reword function documentation in gRPC plugin. (#446)
• Send the span.kind tag to Jaeger from the jaeger exporter. (#441)
• Fix metadataSupplier in the jaeger exporter to overwrite the header if existing instead of appending to it. (#441)
• Upgraded to Go 1.13 in CI. (#465)
• Correct opentelemetry.io URL in trace SDK documentation. (#464)
• Refactored reference counting logic in SDK determination of stale records. (#468)
• Add call to runtime.Gosched in instrument acquireHandle logic to not block the collector. (#469)