type SensorValue @model (subscriptions: null)
@auth (
    rules: [
        { allow: private, provider: iam},
        { allow: public, provider: apiKey}
    ]
)
{
  id: ID!
  sensorId: String!
  value: Float!
  timestamp: AWSTimestamp!
}

type Subscription {
  onCreateSensorValue(sensorId: String!): SensorValue @aws_subscribe(mutations: ["createSensorValue"])
}