Change network to interface in SimpleSigner

Author: nkryuchkov

signer/far_future_protection.go

@@ -4,22 +4,20 @@ import (
 	"time"
 
 	"github.com/attestantio/go-eth2-client/spec/phase0"
-
-	"github.com/bloxapp/eth2-key-manager/core"
 )
 
 // FarFutureMaxValidEpoch is the max epoch of far future signing
 var FarFutureMaxValidEpoch = int64(time.Minute.Seconds() * 20)
 
 // IsValidFarFutureEpoch prevents far into the future signing request, verify a slot is within the current epoch
 // https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/validator.md#protection-best-practices
-func IsValidFarFutureEpoch(network core.Network, epoch phase0.Epoch) bool {
+func IsValidFarFutureEpoch(network network, epoch phase0.Epoch) bool {
 	maxValidEpoch := network.EstimatedEpochAtSlot(network.EstimatedSlotAtTime(time.Now().Unix() + FarFutureMaxValidEpoch))
 	return epoch <= maxValidEpoch
 }
 
 // IsValidFarFutureSlot returns true if the given slot is valid
-func IsValidFarFutureSlot(network core.Network, slot phase0.Slot) bool {
+func IsValidFarFutureSlot(network network, slot phase0.Slot) bool {
 	maxValidSlot := network.EstimatedSlotAtTime(time.Now().Unix() + FarFutureMaxValidEpoch)
 	return slot <= maxValidSlot
 }

signer/validator_signer.go

@@ -30,17 +30,22 @@ type ValidatorSigner interface {
 	SignBLSToExecutionChange(blsToExecutionChange *capella.BLSToExecutionChange, domain phase0.Domain, pubKey []byte) (sig []byte, root []byte, err error)
 }
 
+type network interface {
+	EstimatedEpochAtSlot(slot phase0.Slot) phase0.Epoch
+	EstimatedSlotAtTime(time int64) phase0.Slot
+}
+
 // SimpleSigner implements ValidatorSigner interface
 type SimpleSigner struct {
 	wallet            core.Wallet
 	slashingProtector core.SlashingProtector
-	network           core.Network
+	network           network
 	signLocks         map[string]*sync.RWMutex
 	mapLock           *sync.RWMutex
 }
 
 // NewSimpleSigner is the constructor of SimpleSigner
-func NewSimpleSigner(wallet core.Wallet, slashingProtector core.SlashingProtector, network core.Network) *SimpleSigner {
+func NewSimpleSigner(wallet core.Wallet, slashingProtector core.SlashingProtector, network network) *SimpleSigner {
 	return &SimpleSigner{
 		wallet:            wallet,
 		slashingProtector: slashingProtector,