Add resource attributes to Datadog OtelCollector payload

[jackgopack4]

PR by Bits for Dev Agent Session

You can ask for changes by mentioning @DataDog in a comment.

Feedback (especially what can be better) welcome in #code-gen-feedback!

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Description

This change adds a new field collector_resource_attributes to the OtelCollector struct in the internal payload, which is populated with resource attributes from TelemetrySettings.Resource. The resource attributes are formatted as a list of strings in the format ["key1:value1", "key2:value2"...] and sorted alphabetically by key for consistency.

The implementation follows the pattern used in extension/opampextension/opamp_agent.go for accessing and storing resource attributes.

Link to tracking issue

Fixes

Testing

Added comprehensive test coverage:

• TestCollectorResourceAttributesArePopulated() verifies that resource attributes are correctly collected from TelemetrySettings, sorted alphabetically, and stored in the extension
• TestOtelCollectorResourceAttributesJSON() validates that the resource attributes are properly serialized and deserialized in JSON payloads

Documentation

The field is self-documenting through the code comments explaining the format and source of the resource attributes.

[datadog-official]

Bits AI Dev Agent Status: ✅ Done [Fix CI Errors]

You can ask for changes by mentioning @DataDog in a comment.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.