[pkg/ottl] ottlscope.TransformContext misuses scope schema as resource schema

[axw]

Component(s)

pkg/ottl

What happened?

Description

Resource and scope each have their own schema URL, e.g. for logs see https://github.com/open-telemetry/opentelemetry-proto/blob/85e63b1ad6d0667e48707e8c0a88f366e79a68ce/opentelemetry/proto/logs/v1/logs.proto#L62-L64

ottlscope.NewTransformContextPtr takes a single ambiguous "schemaURLItem" without specifying if it's for the scope or resource. The same schema URL ends up being returned for both scope.schema_url and resource.schema_url paths:

opentelemetry-collector-contrib/pkg/ottl/contexts/ottlscope/scope.go

Lines 91 to 99 in 4682913

	// GetScopeSchemaURLItem returns the schema URL item for the scope from the TransformContext.
	func (tCtx *TransformContext) GetScopeSchemaURLItem() ctxcommon.SchemaURLItem {
	return tCtx.schemaURLItem
	}
	// GetResourceSchemaURLItem returns the schema URL item for the resource from the TransformContext.
	func (tCtx *TransformContext) GetResourceSchemaURLItem() ctxcommon.SchemaURLItem {
	return tCtx.schemaURLItem
	}

Collector version

main

Environment information

Environment

N/A

OpenTelemetry Collector configuration

Log output

Additional context

No response

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[github-actions]

Pinging code owners:

• pkg/ottl: @TylerHelmuth @evan-bradley @edmocosta @bogdandrutu

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[alexcams]

Hi folks! I'd like to work on this issue if it's possible :)