This changelog includes only developer-facing changes. If you are looking for user-facing changes, check out CHANGELOG.md.

• confignet: Remove deprecated DialContext and ListenContext functions (#9363)

• confmap/converter/expandconverter: Add confmap.ConverterSettings argument to experimental expandconverter.New function. (#5615, #9162)

  • The confmap.ConverterSettings struct currently has no fields. It will be used to pass a logger.

• component: Remove deprecated funcs and types (#9283)

• otlpexporter: Config struct is moving from embedding the deprecated GRPCClientSettings struct to using ClientConfig instead. (#6767)

• otlphttpexporter: otlphttpexporter.Config embeds the struct confighttp.ClientConfig instead of confighttp.HTTPClientSettings (#6767)

• otlpreceiver: HTTPConfig struct is moving from embedding the deprecated ServerSettings struct to using HTTPServerConfig instead. (#6767)

• component: Validate component.Type at creation and unmarshaling time. (#9208)

  • A component.Type must start with an ASCII alphabetic character and can only contain ASCII alphanumeric characters and '_'.

• configcompressions: Deprecate IsCompressed. Use CompressionType.IsCompressed instead instead. (#9435)
• configcompression: Deprecate CompressionType, use Type instead. (#9416)
• confighttp: Deprecate CORSSettings, use CORSConfig instead (#6767)
• configgrpc: Deprecate ToListener function in favor of ToListenerContext (#9389)
• configgrpc: Deprecate GRPCServerSettings, use ServerConfig instead (#6767)
• confighttp: Deprecate HTTPClientSettings, use ClientConfig instead (#6767)
• confighttp: Deprecate HTTPServerSettings, use ServerConfig instead (#6767)
• confmap/provider: Deprecate .New in favor of .NewWithSettings for all core providers (#5615, #9162)
  • NewWithSettings now takes an empty confmap.ProviderSettings struct. This will be used to pass a logger in the future.

• exporter/exporterhelper: Add API for enabling queue in the new exporter helpers. (#7874) The following experimental API is introduced in exporter package:

  • exporterhelper.WithRequestQueue: a new exporter helper option for using a queue.
  • exporterqueue.Queue: an interface for queue implementations.
  • exporterqueue.Factory: a queue factory interface, implementations of this interface are intended to be used with WithRequestQueue option.
  • exporterqueue.Settings: queue factory settings.
  • exporterqueue.Config: common configuration for queue implementations.
  • exporterqueue.NewDefaultConfig: a function for creating a default queue configuration.
  • exporterqueue.NewMemoryQueueFactory: a new factory for creating a memory queue.
  • `exporterqueue.NewPersistentQueueFactory: a factory for creating a persistent queue.

• featuregate: Add the featuregate.ErrAlreadyRegistered error, which is returned by featuregate.Registry's Register when adding a feature gate that is already registered. (#8622) Use errors.Is to check for this error.

• bug_fix: Implement encoding.BinaryMarshaler interface to prevent configopaque -> []byte -> string conversions from leaking the value (#9279)

• configopaque: configopaque.String implements fmt.Stringer and fmt.GoStringer, outputting [REDACTED] when formatted with the %s, %q or %#v verbs(#9213) This may break applications that rely on the previous behavior of opaque strings withfmt.Sprintfto e.g. build URLs or headers. Explicitly cast the opaque string to a string before using it infmt.Sprintf` to restore the previous behavior.

• all: Remove obsolete "// +build" directives (#9304)

• connectortest: Remove deprecated connectortest router helpers. (#9278)

• obsreporttest: deprecate test funcs/structs (#8492) The following methods/structs have been moved from obsreporttest to componenttest:

  • obsreporttest.TestTelemetry -> componenttest.TestTelemetry
  • obsreporttest.SetupTelemetry -> componenttest.SetupTelemetry
  • obsreporttest.CheckScraperMetrics -> TestTelemetry.CheckScraperMetrics
  • obserporttest.TestTelemetry.TelemetrySettings -> componenttest.TestTelemetry.TelemetrySettings()

• confignet: Deprecates DialContext and ListenContext functions. Use Dial and Listen instead. (#9258) Unlike the previous Dial and Listen functions, the new Dial and Listen functions take a context.Context like DialContext and ListenContext.

• otlpexporter: Change Config members names to use Config suffix. (#9091)
• component: Remove deprecated unused TelemetrySettingsBase (#9145)

• confignet: Deprecates the Dial and Listen functions in favor of DialContext and ListenContext. (#9163)
• component: Deprecate unnecessary type StatusFunc (#9146)

• exporterhelper: Replace converter interface with function in the new experimental exporter helper. (#8122)
• featuregate: Remove deprecate function featuregate.NewFlag (#8727) Use featuregate.Registry's RegisterFlags method instead.

• telemetry: deprecate jsonschema generated types (#15009)

• pdata: Add ZeroThreshold field to exponentialHistogramDataPoint in pmetric package. (#8802)

• otelcol: CollectorSettings.Factories now expects: func() (Factories, error) (#8478)
• exporter/exporterhelper: The experimental Request API is updated. (#7874)
  • Request interface now includes ItemsCount() method.
  • RequestItemsCounter is removed.
  • The following interfaces are added:
    • Added an optional interface for handling errors that occur during request processing RequestErrorHandler.
    • Added a function to unmarshal bytes into a Request RequestUnmarshaler.
    • Added a function to marshal a Request into bytes RequestMarshaler

• featuregate: Deprecate featuregate.NewFlag in favor of featuregate.Registry's RegisterFlags method (#8727)

• featuregate: Add validation for feature gates ID, URL and versions. (#8766) Feature gates IDs are now explicitly restricted to ASCII alphanumerics and dots.

• pdata: Add IsReadOnly() method to p[metrics|logs|traces].[Metrics|Logs|Spans] pdata structs allowing to check if the struct is read-only. (#6794)

• pdata: Introduce API to control pdata mutability (#6794) This change introduces new API pdata methods to control the mutability:
  • p[metric|trace|log].[Metrics|Traces|Logs].MarkReadOnly() - marks the pdata as read-only. Any subsequent mutations will result in a panic.
  • p[metric|trace|log].[Metrics|Traces|Logs].IsReadOnly() - returns true if the pdata is marked as read-only. Currently, all the data is kept mutable. This API will be used by fanout consumer in the following releases.

• obsreport: remove methods/structs deprecated in previous release. (#8492)
• extension: remove deprecated Configs and Factories (#8631)

• service: remove deprecated service.PipelineConfig (#8485)

• obsreporttest: deprecate To*CreateSettings funcs in obsreporttest (#8492) The following TestTelemetry methods have been deprecated. Use structs instead:

  • ToExporterCreateSettings -> exporter.CreateSettings
  • ToProcessorCreateSettings -> processor.CreateSettings
  • ToReceiverCreateSettings -> receiver.CreateSettings

• obsreport: Deprecating obsreport.Exporter, obsreport.ExporterSettings, obsreport.NewExporter (#8492) These deprecated methods/structs have been moved to exporterhelper:

  • obsreport.Exporter -> exporterhelper.ObsReport
  • obsreport.ExporterSettings -> exporterhelper.ObsReportSettings
  • obsreport.NewExporter -> exporterhelper.NewObsReport

• obsreport: Deprecating obsreport.BuildProcessorCustomMetricName, obsreport.Processor, obsreport.ProcessorSettings, obsreport.NewProcessor (#8492) These deprecated methods/structs have been moved to processorhelper:

  • obsreport.BuildProcessorCustomMetricName -> processorhelper.BuildCustomMetricName
  • obsreport.Processor -> processorhelper.ObsReport
  • obsreport.ProcessorSettings -> processorhelper.ObsReportSettings
  • obsreport.NewProcessor -> processorhelper.NewObsReport

• obsreport: Deprecating obsreport scraper and receiver API (#8492) These deprecated methods/structs have been moved to receiverhelper and scraperhelper:

  • obsreport.Receiver -> receiverhelper.ObsReport
  • obsreport.ReceiverSettings -> receiverhelper.ObsReportSettings
  • obsreport.NewReceiver -> receiverhelper.NewObsReport
  • obsreport.Scraper -> scraperhelper.ObsReport
  • obsreport.ScraperSettings -> scraperhelper.ObsReportSettings
  • obsreport.NewScraper -> scraperhelper.NewObsReport

• otelcol: Splitting otelcol into its own module. (#7924)
• service: Split service into its own module (#7923)

• exporter/exporterhelper: Introduce a new exporter helper that operates over client-provided requests instead of pdata (#7874) The following experimental API is introduced in exporter/exporterhelper package:

  • NewLogsRequestExporter: a new exporter helper for logs.
  • NewMetricsRequestExporter: a new exporter helper for metrics.
  • NewTracesRequestExporter: a new exporter helper for traces.
  • Request: an interface for client-defined requests.
  • RequestItemsCounter: an optional interface for counting the number of items in a Request.
  • LogsConverter: an interface for converting plog.Logs to Request.
  • MetricsConverter: an interface for converting pmetric.Metrics to Request.
  • TracesConverter: an interface for converting ptrace.Traces to Request. All the new APIs are intended to be used by exporters that need to operate over client-provided requests instead of pdata.

• otlpreceiver: Export HTTPConfig as part of the API for creating the otlpreceiver configuration. (#8175) Changes signature of receiver/otlpreceiver/config.go type httpServerSettings to HTTPConfig.

• all: Remove go 1.19 support, bump minimum to go 1.20 and add testing for 1.21 (#8207)

• changelog: Generate separate changelogs for end users and package consumers (#8153)