Is there any way to copy resource attributes to data point attributes?

[zongsizhang]

We are sending metrics to the Grafana cloud through OTLP. Prometheus drops our resource attributes.
Is there any way to copy the resource attributes to the data point attributes?

Appreciate!

[edmocosta]

I think the transformprocessor can help on that:

processors:
  transform/copy_resource_attributes:
    metric_statements:
      - context: datapoint
        statements:
          - merge_maps(attributes, resource.attributes, "insert")

[carterd]

Maybe transform: statements: set will also work if you want to have more control on mappings.

processors:
  transform/copy_resource_attributes:
    metric_statements:
      - context: datapoint
        statements:
            - set(attributes["host_name"], resource.attributes["host.name"])
            - set(attributes["label_something"], resource.attributes["something.else"])