[submitter] confirmed queue gauge

[trajan0x]

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[greptile-apps]

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

1. 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

2. 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
   }

3. 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))
   }

4. 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)
   }

5. 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

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