telemetry:
  instrumentation:
    instruments:
      default_requirement_level: none
      subgraph:
        "custom.histogram":
          description: "histogram of requests"
          type: histogram
          unit: "unit"
          value: unit
          attributes:
            subgraph.graphql.document: true
            "custom_attribute":
              subgraph_request_header: "custom_header"
          condition:
            eq:
              - subgraph_request_header: "custom_header"
              - "allowed"
