Basefee opcode

block/factory/factory.go

@@ -9,6 +9,7 @@ import (
 	v1 "github.com/harmony-one/harmony/block/v1"
 	v2 "github.com/harmony-one/harmony/block/v2"
 	v3 "github.com/harmony-one/harmony/block/v3"
+	v4 "github.com/harmony-one/harmony/block/v4"
 	"github.com/harmony-one/harmony/internal/params"
 )
 
@@ -30,6 +31,8 @@ func NewFactory(chainConfig *params.ChainConfig) Factory {
 func (f *factory) NewHeader(epoch *big.Int) *block.Header {
 	var impl blockif.Header
 	switch {
+	case f.chainConfig.IsLondon(epoch):
+		impl = v4.NewHeader()
 	case f.chainConfig.IsPreStaking(epoch) || f.chainConfig.IsStaking(epoch):
 		impl = v3.NewHeader()
 	case f.chainConfig.IsCrossLink(epoch):

block/interface/header.go

@@ -236,4 +236,8 @@ type Header interface {
 	// SetSlashes sets the RLP-encoded form of slashes
 	// It stores a copy; the caller may freely modify the original.
 	SetSlashes(newSlashes []byte)
+
+	BaseFee() *big.Int
+
+	SetBaseFee(newBaseFee *big.Int)
 }

block/v0/header.go

@@ -445,3 +445,15 @@ func (h *Header) Copy() blockif.Header {
 	cpy := *h
 	return &cpy
 }
+
+// BaseFee returns the base fee of the block.
+func (h *Header) BaseFee() *big.Int {
+	return nil
+}
+
+// SetBaseFee sets the base fee of the block.
+func (h *Header) SetBaseFee(newBaseFee *big.Int) {
+	h.Logger(utils.Logger()).Warn().
+		Str("baseFee", newBaseFee.String()).
+		Msg("cannot store base fee in V0 header")
+}

block/v1/header.go

@@ -429,3 +429,14 @@ func (h *Header) Copy() blockif.Header {
 	cpy := *h
 	return &cpy
 }
+
+// BaseFee returns the base fee of the header.
+func (h *Header) BaseFee() *big.Int {
+	return nil
+}
+
+// SetBaseFee sets the base fee of the header.
+func (h *Header) SetBaseFee(newBaseFee *big.Int) {
+	h.Logger(utils.Logger()).Error().
+		Msg("cannot store base fee in V1 header")
+}

block/v2/header.go

@@ -428,3 +428,14 @@ func (h *Header) Copy() blockif.Header {
 	cpy := *h
 	return &cpy
 }
+
+// BaseFee returns the base fee of the block.
+func (h *Header) BaseFee() *big.Int {
+	return nil
+}
+
+// SetBaseFee sets the base fee of the block.
+func (h *Header) SetBaseFee(newBaseFee *big.Int) {
+	h.Logger(utils.Logger()).Error().
+		Msg("cannot store base fee in V2 header")
+}

block/v3/header.go

@@ -422,3 +422,15 @@ func (h *Header) Copy() blockif.Header {
 	cpy := *h
 	return &cpy
 }
+
+// BaseFee returns the base fee of the header.
+func (h *Header) BaseFee() *big.Int {
+	return nil
+}
+
+// SetBaseFee sets the base fee of the header.
+func (h *Header) SetBaseFee(newBaseFee *big.Int) {
+	h.Logger(utils.Logger()).Warn().
+		Str("baseFee", newBaseFee.String()).
+		Msg("cannot store BaseFee in V3 header")
+}