Add Sync stats, and report them in DebugAPI

common/ethauction.go

@@ -43,3 +43,12 @@ type AuctionVariables struct {
 	// Number of blocks at the end of a slot in which any coordinator can forge if the winner has not forged one before
 	SlotDeadline uint8 `json:"slotDeadline" meddler:"slot_deadline" validate:"required"`
 }
+
+// Copy returns a deep copy of the Variables
+func (v *AuctionVariables) Copy() *AuctionVariables {
+	vCpy := *v
+	for i := range v.DefaultSlotSetBid {
+		vCpy.DefaultSlotSetBid[i] = new(big.Int).SetBytes(v.DefaultSlotSetBid[i].Bytes())
+	}
+	return &vCpy
+}

common/ethrollup.go

@@ -163,3 +163,9 @@ type RollupVariables struct {
 	WithdrawalDelay       uint64                        `json:"withdrawalDelay" meddler:"withdrawal_delay" validate:"required"`
 	Buckets               [RollupConstNumBuckets]Bucket `json:"buckets" meddler:"buckets,json"`
 }
+
+// Copy returns a deep copy of the Variables
+func (v *RollupVariables) Copy() *RollupVariables {
+	vCpy := *v
+	return &vCpy
+}

common/ethwdelayer.go

@@ -23,3 +23,9 @@ type WDelayerVariables struct {
 	EmergencyModeStartingTime  uint64            `json:"emergencyModeStartingTime" meddler:"emergency_start_time"`
 	EmergencyMode              bool              `json:"emergencyMode" meddler:"emergency_mode"`
 }
+
+// Copy returns a deep copy of the Variables
+func (v *WDelayerVariables) Copy() *WDelayerVariables {
+	vCpy := *v
+	return &vCpy
+}