groups:
  - id: messaging.attributes.common
    type: attribute_group
    brief: "Common messaging attributes."
    prefix: messaging
    attributes:
      - ref: messaging.system
        requirement_level: required
      - ref: error.type
        examples: ['amqp:decode-error', 'KAFKA_STORAGE_ERROR', 'channel-error']
        requirement_level:
          conditionally_required: If and only if the messaging operation has failed.
      - ref: server.address
        note: >
          This should be the IP/hostname of the broker (or other network-level peer) this specific message is sent to/received from.
        requirement_level:
          conditionally_required: If available.
      - ref: server.port
      - ref: network.protocol.name
        examples: ['amqp', 'mqtt']
        tag: connection-level
      - ref: network.protocol.version
        tag: connection-level