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47 lines
2 KiB
Markdown
47 lines
2 KiB
Markdown
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# Experimental Features
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The SDK contains features that have not yet stabilized in the OpenTelemetry specification.
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These features are added to the OpenTelemetry Go SDK prior to stabilization in the specification so that users can start experimenting with them and provide feedback.
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These feature may change in backwards incompatible ways as feedback is applied.
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See the [Compatibility and Stability](#compatibility-and-stability) section for more information.
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## Features
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- [Resource](#resource)
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### Resource
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[OpenTelemetry resource semantic conventions] include many attribute definitions that are defined as experimental.
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To have experimental semantic conventions be added by [resource detectors] set the `OTEL_GO_X_RESOURCE` environment variable.
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The value set must be the case-insensitive string of `"true"` to enable the feature.
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All other values are ignored.
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<!-- TODO: document what attributes are added by which detector -->
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[OpenTelemetry resource semantic conventions]: https://opentelemetry.io/docs/specs/semconv/resource/
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[resource detectors]: https://pkg.go.dev/go.opentelemetry.io/otel/sdk/resource#Detector
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#### Examples
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Enable experimental resource semantic conventions.
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```console
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export OTEL_GO_X_RESOURCE=true
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```
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Disable experimental resource semantic conventions.
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```console
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unset OTEL_GO_X_RESOURCE
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```
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## Compatibility and Stability
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Experimental features do not fall within the scope of the OpenTelemetry Go versioning and stability [policy](../../../VERSIONING.md).
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These features may be removed or modified in successive version releases, including patch versions.
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When an experimental feature is promoted to a stable feature, a migration path will be included in the changelog entry of the release.
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There is no guarantee that any environment variable feature flags that enabled the experimental feature will be supported by the stable version.
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If they are supported, they may be accompanied with a deprecation notice stating a timeline for the removal of that support.
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