fix: setup slot number per network (#43)

Author: mpetrun5

chains/evm/config/config.go

@@ -24,6 +24,7 @@ type EVMConfig struct {
 	StartingPeriod        uint64  `required:"true" split_words:"true"`
 	ForcePeriod           bool    `default:"false" split_words:"true"`
 	FinalityThreshold     uint64  `default:"342" split_words:"true"`
+	SlotsPerEpoch         uint64  `default:"32" split_words:"true"`
 }
 
 // LoadEVMConfig loads EVM config from the environment and validates the fields

chains/evm/config/config_test.go

@@ -65,6 +65,7 @@ func (s *EVMConfigTestSuite) Test_LoadEVMConfig_SuccessfulLoad_DefaultValues() {
 		StartingPeriod:        500,
 		ForcePeriod:           false,
 		FinalityThreshold:     342,
+		SlotsPerEpoch:         32,
 	})
 }
 
@@ -85,6 +86,7 @@ func (s *EVMConfigTestSuite) Test_LoadEVMConfig_SuccessfulLoad() {
 	os.Setenv("SPECTRE_DOMAINS_1_STARTING_PERIOD", "500")
 	os.Setenv("SPECTRE_DOMAINS_1_FORCE_PERIOD", "true")
 	os.Setenv("SPECTRE_DOMAINS_1_FINALITY_THRESHOLD", "382")
+	os.Setenv("SPECTRE_DOMAINS_1_SLOTS_PER_EPOCH", "16")
 
 	c, err := config.LoadEVMConfig(1)
 
@@ -106,5 +108,6 @@ func (s *EVMConfigTestSuite) Test_LoadEVMConfig_SuccessfulLoad() {
 		StartingPeriod:        500,
 		ForcePeriod:           true,
 		FinalityThreshold:     382,
+		SlotsPerEpoch:         16,
 	})
 }

chains/evm/prover/prover.go

@@ -59,6 +59,7 @@ type Prover struct {
 	proverClient ProverClient
 
 	spec              Spec
+	slotsPerEpoch     uint64
 	finalityThreshold uint64
 }
 
@@ -68,13 +69,15 @@ func NewProver(
 	lightClient LightClient,
 	spec Spec,
 	finalityTreshold uint64,
+	slotsPerEpoch uint64,
 ) *Prover {
 	return &Prover{
 		proverClient:      proverClient,
 		spec:              spec,
 		beaconClient:      beaconClient,
 		lightClient:       lightClient,
 		finalityThreshold: finalityTreshold,
+		slotsPerEpoch:     slotsPerEpoch,
 	}
 }
 
@@ -174,7 +177,7 @@ func (p *Prover) StepArgs() (*StepArgs, error) {
 	}
 	pubkeys := bootstrap.CurrentSyncCommittee.PubKeys
 
-	domain, err := p.beaconClient.Domain(context.Background(), SYNC_COMMITTEE_DOMAIN, phase0.Epoch(update.FinalizedHeader.Header.Slot/32))
+	domain, err := p.beaconClient.Domain(context.Background(), SYNC_COMMITTEE_DOMAIN, phase0.Epoch(update.FinalizedHeader.Header.Slot/p.slotsPerEpoch))
 	if err != nil {
 		return nil, err
 	}
@@ -213,7 +216,7 @@ func (p *Prover) RotateArgs(period uint64) (*RotateArgs, error) {
 	finalizedNextSyncCommitteeBranch[0] = update.NextSyncCommitteeBranch[0]
 	update.NextSyncCommitteeBranch = finalizedNextSyncCommitteeBranch
 
-	domain, err := p.beaconClient.Domain(context.Background(), SYNC_COMMITTEE_DOMAIN, phase0.Epoch(update.FinalizedHeader.Header.Slot/32))
+	domain, err := p.beaconClient.Domain(context.Background(), SYNC_COMMITTEE_DOMAIN, phase0.Epoch(update.FinalizedHeader.Header.Slot/p.slotsPerEpoch))
 	if err != nil {
 		return nil, err
 	}

main.go

@@ -128,7 +128,7 @@ func main() {
 				}
 
 				lightClient := lightclient.NewLightClient(config.BeaconEndpoint)
-				p := prover.NewProver(proverClient, beaconProvider, lightClient, prover.Spec(config.Spec), config.FinalityThreshold)
+				p := prover.NewProver(proverClient, beaconProvider, lightClient, prover.Spec(config.Spec), config.FinalityThreshold, config.SlotsPerEpoch)
 				routerAddress := common.HexToAddress(config.Router)
 				stepHandler := handlers.NewStepEventHandler(msgChan, client, beaconProvider, p, routerAddress, id, domains)
 				rotateHandler := handlers.NewRotateHandler(msgChan, periodStore, p, id, domains, config.CommitteePeriodLength, latestPeriod)