Function createMessagingMetric

createMessagingMetric(
    healthCheckRoutingKey: string,
    storeOutboxMessage: StoreOutboxMessage,
    getAccessToken: () => Promise<string>,
    ownerPool: Pool,
    timeoutMs?: number,
): Metric<string>
Creates a Gauge metric with the name ax_messaging which can be added to a metric registry. This metric will have an integer value of the duration in seconds if the service can acquire a service account token, send a message, and afterwards receive it. Or a value of 0 otherwise.
Parameters
- healthCheckRoutingKey: string
  The RabbitMQ routing key for sending the outbox message
- storeOutboxMessage: StoreOutboxMessage
  The outbox storage function for starting the message processing
- getAccessToken: () => Promise<string>
  Get the access token with admin permissions to include in the message
- ownerPool: Pool
  The database owner pool as this is independent of an environment
- timeoutMs: number = 30_000
  The optinal timeout in milliseconds after which the messaging should be considered as failure
Returns Metric<string>
A Gauge metric with a name ax_messaging.