Version 1.43.0/0.64b0

Added

• opentelemetry-sdk: add add_metric_reader / remove_metric_reader public APIs to register / unregister metric readers at runtime. (#4863)
• opentelemetry-exporter-prometheus: add support for configuring metric scope labels (#5123)
• opentelemetry-exporter-otlp-proto-grpc: Add grpc error details to the log message that's written when the grpc call fails. (#5143)
• opentelemetry-exporter-http-transport: add 'opentelemetry-exporter-http-transport' package for HTTP exporters (#5194)
• opentelemetry-sdk: Add composite/development samplers support to declarative file configuration (#5201)
• opentelemetry-exporter-otlp-json-file: Add OTLP JSON File exporter implementation (#5207)
• opentelemetry-sdk: add _resolve_component shared utility for declarative config plugin loading, reducing boilerplate in exporter factory functions (#5215)
• opentelemetry-sdk: add pull metric reader support to declarative file configuration, including Prometheus metric reader via the prometheus_development config field (#5216)
• opentelemetry-proto-json: update to use opentelemetry-proto v1.10.0 (#5224)
• opentelemetry-proto: bump maximum supported protobuf version to 7.x.x (#5251)
• opentelemetry-sdk: add ServiceInstanceIdResourceDetector for populating service.instance.id (#5259)
• opentelemetry-sdk: declarative config loader now recursively converts parsed dicts into typed dataclass instances, including nested dataclasses, lists of dataclasses, and enum values. End-to-end YAML/JSON → SDK configuration now works via the factory functions. (#5269)
• opentelemetry-sdk: add configure_sdk(config) to the declarative configuration API. Single entry point that takes a parsed OpenTelemetryConfiguration, builds the resource, and applies the tracer/meter/logger providers and propagator globally. Honors the top-level disabled flag. (#5270)
• opentelemetry-sdk: the SDK configurator now honors the OTEL_CONFIG_FILE environment variable. When set, the SDK loads and applies the referenced declarative configuration file (YAML or JSON) in place of the env-var-based init path. (#5271)
• opentelemetry-sdk: update declarative config to use ServiceInstanceIdResourceDetector (#5299)
• opentelemetry-exporter-otlp-proto-common, opentelemetry-exporter-otlp-json-common: encoders now always accept null, and encode it as an empty AnyValue in accordance with the spec. (#5305)
• opentelemetry-sdk: validate the declarative config file_format version — reject an unsupported major version and warn on a newer minor version, per the configuration spec versioning rules (#5315)
• opentelemetry-exporter-http-transport: enable entry-point loading of transport implementations (#5320)

Changed

• opentelemetry-sdk: introduce experimental entry points for OpAMP agent integration (#4646)
• opentelemetry-api: conditionally import entrypoints for opentelemetry_context only if the OTEL_PYTHON_CONTEXT env variable is defined, return ContextVarsRuntimeContext otherwise (#5144)
• opentelemetry-sdk: rename "known/unknown" to "built-in/user-defined" terminology in declarative config component loading code (#5214)
• opentelemetry-proto: regenerate protobuf code from opentelemetry-proto v1.10.0 (#5223)
• opentelemetry-sdk: remove unnecessary copy in Span creation (#5272)
• opentelemetry-sdk: remove unnecessary dict in set_attribute method (#5274)
• opentelemetry-sdk: inline the method _clean_attribute_value (#5275)
• Remove typing aliases deprecated in python 3.9 and replace all usages of typing.Union and typing.Optional with |. (#5277)
• opentelemetry-sdk: remove generator in the accessor for links/events (#5287)
• opentelemetry-api: remove unnecessary copy in iterator (#5288)
• opentelemetry-api: update EnvironmentGetter to ignore non-normalized environment variable names (#5289)
• opentelemetry-sdk: update iterator for BoundedList (#5297)
• opentelemetry-sdk: reduce lock contention in attributes (#5298)
• opentelemetry-sdk: merge doesn't need a copy, dict already does this (#5326)
• opentelemetry-api: normalize empty environment propagation names to _ in EnvironmentSetter and EnvironmentGetter (#5328)

Fixed

• Add missing .rst files to Sphinx documentation build for SDK logs, propagators, and exporter submodules. (#5017)
• Preserve the random trace ID flag when creating child spans instead of always setting the random trace id bit depending on the available trace id generator. (#5241)
• opentelemetry-api: fix SelectableGroups deprecation warning (#5250)
• opentelemetry-sdk: make SynchronousMeasurementConsumer.consume_measurement lock free to avoid deadlocks (#5321)