ci: migrate unreleased changelog entries to towncrier fragments

.changelog/4854.added

@@ -0,0 +1 @@
+`opentelemetry-api`, `opentelemetry-sdk`: add support for 'random-trace-id' flags in W3C traceparent header trace flags. Implementations of `IdGenerator` that do randomly generate the 56 least significant bits, should also implement a `is_trace_id_random` methods that returns `True`.

.changelog/4907.added

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+logs: add exception support to Logger emit and LogRecord attributes

.changelog/4917.added

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+`opentelemetry-exporter-otlp-proto-grpc`: make retryable gRPC error codes configurable for gRPC exporters

.changelog/4990.added

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+`opentelemetry-sdk`: Add `create_logger_provider`/`configure_logger_provider` to declarative file configuration, enabling LoggerProvider instantiation from config files without reading env vars

.changelog/4996.added

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+`opentelemetry-exporter-otlp-json-common`: add 'opentelemetry-exporter-otlp-json-common' package for OTLP JSON exporters

.changelog/5003.added

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+`opentelemetry-sdk`: Add `service` resource detector support to declarative file configuration via `detection_development.detectors[].service`

.changelog/5055.added

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+Add `registry` keyword argument to `PrometheusMetricReader` to allow passing a custom Prometheus registry

.changelog/5072.fixed

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+Fix incorrect code example in `create_tracer()` docstring

.changelog/5076.removed

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+Drop Python 3.9 support

.changelog/5083.fixed

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+`opentelemetry-sdk`: Fix `ProcessResourceDetector` to use `sys.orig_argv` so that `process.command`, `process.command_line`, and `process.command_args` reflect the original invocation for `python -m <module>` runs (where `sys.argv[0]` is rewritten to the module path)

.changelog/5088.added

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+Add WeaverLiveCheck test util

.changelog/5091.fixed

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+`opentelemetry-sdk`: fix YAML structure injection via environment variable substitution in declarative file configuration; values containing newlines are now emitted as quoted YAML scalars per spec requirement

.changelog/5093.added

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+`opentelemetry-sdk`: add `load_entry_point` shared utility to declarative file configuration for loading plugins via entry points; refactor propagator loading to use it

.changelog/5095.added

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+`opentelemetry-sdk`: add sampler plugin loading to declarative file configuration via the `opentelemetry_sampler` entry point group, matching the spec's PluginComponentProvider mechanism

.changelog/5096.changed

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+`opentelemetry-semantic-conventions`: use `X | Y` union annotation

.changelog/5119.changed

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+`opentelemetry-api`: update `EnvironmentGetter` and `EnvironmentSetter` to use normalized environment variable names

.changelog/5120.fixed

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+`opentelemetry-sdk`: make resource detector ordering deterministic

.changelog/5131.added

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+`opentelemetry-sdk`: add `additional_properties` support to generated config models via custom `datamodel-codegen` template, enabling plugin/custom component names to flow through typed dataclasses

.changelog/5133.changed

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+Apply fixes for `UP` ruff rule

.changelog/5135.fixed

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+Fix incorrect type annotation on `detectors` parameter of `get_aggregated_resources`

.changelog/5145.changed

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+`opentelemetry-sdk`: only load entrypoints for resource detectors if they are configured via `OTEL_EXPERIMENTAL_RESOURCE_DETECTORS`

.changelog/5149.changed

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+ci: wait for tracecontext server readiness instead of a fixed sleep in `scripts/tracecontext-integration-test.sh`

.changelog/5151.added

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+Add ability to selectively enable exporting of SDK internal metrics with the `OTEL_PYTHON_SDK_INTERNAL_METRICS_ENABLED` environment variable.

.changelog/5163.changed

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+`opentelemetry-api`: Enforce W3C Baggage size limits on outbound propagation in `W3CBaggagePropagator.inject()`. Previously only inbound extraction enforced limits; now inject also caps entries at 180, individual pairs at 4096 bytes, and total header at 8192 bytes per the W3C Baggage spec. The extract path max_pairs limit now counts all size-valid entries rather than only successfully parsed ones.

.changelog/5177.changed

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+Switch to SPDX license headers and add CI enforcement

.changelog/5179.fixed

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+`opentelemetry-sdk`: fix multi-processor `force_flush` skipping remaining processors when one returns `None`

CHANGELOG.md

@@ -20,61 +20,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 <!-- changelog start -->
 
-## Unreleased
-
-- `opentelemetry-sdk`: fix multi-processor `force_flush` skipping remaining processors when one returns `None`
-  ([#5179](https://github.com/open-telemetry/opentelemetry-python/pull/5179))
-- Apply fixes for `UP` ruff rule
-  ([#5133](https://github.com/open-telemetry/opentelemetry-python/pull/5133))
-- Switch to SPDX license headers and add CI enforcement
-  ([#5177](https://github.com/open-telemetry/opentelemetry-python/pull/5177))
-- `opentelemetry-api`: Enforce W3C Baggage size limits on outbound propagation in `W3CBaggagePropagator.inject()`. Previously only inbound extraction enforced limits; now inject also caps entries at 180, individual pairs at 4096 bytes, and total header at 8192 bytes per the W3C Baggage spec. The extract path max_pairs limit now counts all size-valid entries rather than only successfully parsed ones.
-  ([#5163](https://github.com/open-telemetry/opentelemetry-python/pull/5163))
-- `opentelemetry-sdk`: add `additional_properties` support to generated config models via custom `datamodel-codegen` template, enabling plugin/custom component names to flow through typed dataclasses
-  ([#5131](https://github.com/open-telemetry/opentelemetry-python/pull/5131))
-- Fix incorrect code example in `create_tracer()` docstring
-  ([#5072](https://github.com/open-telemetry/opentelemetry-python/issues/5072))
-- `opentelemetry-sdk`: add `load_entry_point` shared utility to declarative file configuration for loading plugins via entry points; refactor propagator loading to use it
-  ([#5093](https://github.com/open-telemetry/opentelemetry-python/pull/5093))
-- `opentelemetry-sdk`: fix YAML structure injection via environment variable substitution in declarative file configuration; values containing newlines are now emitted as quoted YAML scalars per spec requirement
-  ([#5091](https://github.com/open-telemetry/opentelemetry-python/pull/5091))
-- `opentelemetry-sdk`: Add `create_logger_provider`/`configure_logger_provider` to declarative file configuration, enabling LoggerProvider instantiation from config files without reading env vars
-  ([#4990](https://github.com/open-telemetry/opentelemetry-python/pull/4990))
-- `opentelemetry-sdk`: Add `service` resource detector support to declarative file configuration via `detection_development.detectors[].service`
-  ([#5003](https://github.com/open-telemetry/opentelemetry-python/pull/5003))
-- logs: add exception support to Logger emit and LogRecord attributes
-  ([#4907](https://github.com/open-telemetry/opentelemetry-python/issues/4907))
-- Drop Python 3.9 support
-  ([#5076](https://github.com/open-telemetry/opentelemetry-python/pull/5076))
-- `opentelemetry-semantic-conventions`: use `X | Y` union annotation
-  ([#5096](https://github.com/open-telemetry/opentelemetry-python/pull/5096))
-- `opentelemetry-sdk`: Fix `ProcessResourceDetector` to use `sys.orig_argv` so that `process.command`, `process.command_line`, and `process.command_args` reflect the original invocation for `python -m <module>` runs (where `sys.argv[0]` is rewritten to the module path)
-  ([#5083](https://github.com/open-telemetry/opentelemetry-python/pull/5083))
-- `opentelemetry-sdk`: make resource detector ordering deterministic
-  ([#5120](https://github.com/open-telemetry/opentelemetry-python/pull/5120))
-- Add WeaverLiveCheck test util
-  ([#5088](https://github.com/open-telemetry/opentelemetry-python/pull/5088))
-- Fix incorrect type annotation on `detectors` parameter of `get_aggregated_resources`
-  ([#5135](https://github.com/open-telemetry/opentelemetry-python/pull/5135))
-- ci: wait for tracecontext server readiness instead of a fixed sleep in `scripts/tracecontext-integration-test.sh`
-  ([#5149](https://github.com/open-telemetry/opentelemetry-python/pull/5149))
-- `opentelemetry-api`: update `EnvironmentGetter` and `EnvironmentSetter` to use normalized environment variable names
-  ([#5119](https://github.com/open-telemetry/opentelemetry-python/pull/5119))
-- `opentelemetry-sdk`: only load entrypoints for resource detectors if they are configured via `OTEL_EXPERIMENTAL_RESOURCE_DETECTORS`
-  ([#5145](https://github.com/open-telemetry/opentelemetry-python/pull/5145))
-- `opentelemetry-exporter-otlp-json-common`: add 'opentelemetry-exporter-otlp-json-common' package for OTLP JSON exporters
-  ([#4996](https://github.com/open-telemetry/opentelemetry-python/pull/4996))
-- `opentelemetry-exporter-otlp-proto-grpc`: make retryable gRPC error codes configurable for gRPC exporters
-  ([#4917](https://github.com/open-telemetry/opentelemetry-python/pull/4917))
-- `opentelemetry-sdk`: add sampler plugin loading to declarative file configuration via the `opentelemetry_sampler` entry point group, matching the spec's PluginComponentProvider mechanism
-  ([#5095](https://github.com/open-telemetry/opentelemetry-python/pull/5095))
-- Add `registry` keyword argument to `PrometheusMetricReader` to allow passing a custom Prometheus registry
-  ([#5055](https://github.com/open-telemetry/opentelemetry-python/pull/5055))
-- Add ability to selectively enable exporting of SDK internal metrics with the `OTEL_PYTHON_SDK_INTERNAL_METRICS_ENABLED` environment variable.
-  ([#5151](https://github.com/open-telemetry/opentelemetry-python/pull/5151))
-- `opentelemetry-api`, `opentelemetry-sdk`: add support for 'random-trace-id' flags in W3C traceparent header trace flags. Implementations of `IdGenerator` that do randomly generate the 56 least significant bits, should also implement a `is_trace_id_random` methods that returns `True`.
-  ([#4854](https://github.com/open-telemetry/opentelemetry-python/pull/4854))
-
 ## Version 1.41.0/0.62b0 (2026-04-09)