[R4R]-{develop}-[gasoracle]impr: initialize fee_scalar metrics (#1346)

Core changes:
- Query scalar from gas_oracle contract and initialize fee_scalar for metrics when gas_oracle starts

gas-oracle/oracle/base_fee.go

@@ -71,6 +71,17 @@ func wrapUpdateBaseFee(l1Backend bind.ContractTransactor, l2Backend DeployContra
  if err != nil {
  return nil, err
  }
+
+ // initialize some metrics
+ // initialize fee scalar from contract
+ feeScalar, err := contract.Scalar(&bind.CallOpts{
+ Context: context.Background(),
+ })
+ if err != nil {
+ return nil, err
+ }
+ ometrics.GasOracleStats.FeeScalarGauge.Update(feeScalar.Int64())
+
  return func() error {
  baseFee, err := contract.L1BaseFee(&bind.CallOpts{
  Context: context.Background(),
@@ -84,7 +95,7 @@ func wrapUpdateBaseFee(l1Backend bind.ContractTransactor, l2Backend DeployContra
  if err != nil {
  return err
  }
- // Update faa scalar metrics
+ // Update fee scalar metrics
  ometrics.GasOracleStats.FeeScalarGauge.Update(feeScalar.Int64())
 
  // NOTE this will return base multiple with coin ratio