[submitter] confirmed queue gauge

To implement a confirmed queue gauge in the submitter package, follow these steps:

Define the Gauge in txSubmitterImpl struct: Add a new field for the confirmed queue gauge in the txSubmitterImpl struct in submitter.go:
```
confirmedQueueGauge metric.Int64ObservableGauge
```

Initialize the Gauge in setupMetrics: Initialize the confirmed queue gauge in the setupMetrics method in submitter.go:

func (t *txSubmitterImpl) setupMetrics() (err error) {
   // ... existing code ...
   t.confirmedQueueGauge, err = t.meter.Int64ObservableGauge("confirmed_queue_size")
   if err != nil {
       return fmt.Errorf("could not create confirmed queue gauge: %w", err)
   }
   _, err = t.meter.RegisterCallback(t.recordConfirmedQueueSize, t.confirmedQueueGauge)
   if err != nil {
       return fmt.Errorf("could not register callback: %w", err)
   }
   return nil
}

Implement the Callback Method: Implement the recordConfirmedQueueSize method to update the gauge value in submitter.go:

func (t *txSubmitterImpl) recordConfirmedQueueSize(ctx context.Context, result metric.Int64ObserverResult) {
   size, err := t.db.GetConfirmedQueueSize(ctx, t.signer.Address())
   if err != nil {
       logger.Errorf("could not get confirmed queue size: %v", err)
       return
   }
   result.Observe(int64(size))
}

Update the Database Interface: Ensure the db.Service interface has the GetConfirmedQueueSize method in db.go:

type Service interface {
   // ... existing methods ...
   GetConfirmedQueueSize(ctx context.Context, address common.Address) (int, error)
}

Implement the Database Method: Implement the GetConfirmedQueueSize method in the database service implementation in db.go:

func (d *dbService) GetConfirmedQueueSize(ctx context.Context, address common.Address) (int, error) {
   // Implement the logic to count the confirmed transactions in the queue
}

References

/ethergo/submitter/submitter.go /ethergo/submitter/queue.go

#### About Greptile

This response provides a starting point for your research, not a precise solution. Help us improve! Please leave a 👍 if this is helpful and 👎 if it is irrelevant. [Ask Greptile](https://app.greptile.com/chat/github/synapsecns/sanguine/master) · [Edit Issue Bot Settings](https://app.greptile.com/apps/github)

synapsecns / sanguine

[submitter] confirmed queue gauge #2822

References