---
source: apollo-router/src/plugins/telemetry/config_new/instruments.rs
description: on_graphql_error attribute
expression: "&metrics.all()"
info:
  telemetry:
    instrumentation:
      instruments:
        default_requirement_level: none
        supergraph:
          custom_counter:
            description: count of requests
            type: counter
            unit: unit
            value:
              event_custom:
                response_data: $.price
---
- name: custom_counter
  description: count of requests
  unit: unit
  data:
    datapoints:
      - value: 5
        attributes: {}
