Marc Pichler

REQUEST: Repository maintenance on opentelemetry-js-contrib

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### Affected Repository https://github.com/open-telemetry/opentelemetry-js-contrib ### Requested changes - Give write permissions to @opentelemetrybot - Create a fine-grained PAT for @opentelemetrybot to create PRs and Releases on the https://github.com/open-telemetry/opentelemetry-js-contrib repository -...

Document OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE environment variable

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# Feature Request **Is your feature request related to a problem? Please describe.** Currently the `OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE` enviornment variable is not used to configure the export temporality ([see here](https://github.com/open-telemetry/opentelemetry-dotnet-instrumentation/blob/2534ce3a3754648b9f4a10707be19f41393e2221/src/OpenTelemetry.AutoInstrumentation/Configuration/EnvironmentConfigurationMetricHelper.cs#L96)). The spec...

chore(renovate): remove import-in-the-middle from all-patch group

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## Which problem is this PR solving? See #4390, the dependency update is blocked as `import-in-the-middle` is updated to a version that's affected by https://github.com/DataDog/import-in-the-middle/issues/57 ## Short description of the...

chore(deps): remove unused cpx dependencies and update used ones to cpx2

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## Which problem is this PR solving? - replaces `cpx` with `cpx2` where it's used, removes `cpx` where it's not used anymore. Supersedes #4506

[metrics] prototype attributes instrument advisory parameter

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**Goal:** We should prototype the attributes instrument advisory parameter as described in the spec. We should ensure that this parameter is appropriately marked as experimental in both the API and...

chore: prepare release API 1.8.0/Core 1.21.0/Experimental 0.49.0

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## API 1.8.0 ### :rocket: (Enhancement) * feat(api): add SugaredTracer for functions not defined in the spec [#3317](https://github.com/open-telemetry/opentelemetry-js/pull/3317) @secustor ### :bug: (Bug Fix) * fix(api): fix unreachable @opentelemetry/api/experimental entry [#4446](https://github.com/open-telemetry/opentelemetry-js/pull/4446)...

fix(exporter-*-otlp-grpc)!: lazy load gRPC

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## Which problem is this PR solving? We've had problems in the past with the gRPC exporters, as they do not lazy-require the `@grpc/grpc-js` library. This causes problems with `@opentelemetry/instrumentation-grpc`...

[next] merge changes from `main`

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Updates next with the latest changes from main. All changes here are pre-reviewed already.

[otlp-exporter-base] refactor exporters to use a pluggable transport layer

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### Is your feature request related to a problem? Please describe. Currently, transport, configuration (options and environment variables) as well as serialization code are all mixed together in the OTLP...

`Span.addLink()` as defined in the [specifcation](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#add-link) is currently not implemented. We should implement `Span.addLink()` in both the SDK and API. **Additional Information:** - there are efforts to stabilize `Span.addLink()` (https://github.com/open-telemetry/opentelemetry-specification/issues/3865)...