feat: fee market module (#491)

* feat: fee market module

* update proto

* queriers: CLI + gRPC

* gov params

* genesis

* enable height

* fixes

* fix app

x/feemarket/client/cli/query.go

@@ -0,0 +1,139 @@
+package cli
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/metadata"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	grpctypes "github.com/cosmos/cosmos-sdk/types/grpc"
+
+	"github.com/tharsis/ethermint/x/feemarket/types"
+)
+
+// GetQueryCmd returns the parent command for all x/feemarket CLI query commands.
+func GetQueryCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:                        types.ModuleName,
+		Short:                      "Querying commands for the fee market module",
+		DisableFlagParsing:         true,
+		SuggestionsMinimumDistance: 2,
+		RunE:                       client.ValidateCmd,
+	}
+
+	cmd.AddCommand(
+		GetBlockGasCmd(),
+		GetBaseFeeCmd(),
+		GetParamsCmd(),
+	)
+	return cmd
+}
+
+// GetBlockGasCmd queries the gas used in a block
+func GetBlockGasCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "block-gas [height]",
+		Short: "Get the block gas used at a given block height",
+		Long:  "Get the block gas used at a given block height. If the height is not provided, it will use the latest height from context.",
+		Args:  cobra.RangeArgs(0, 1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			ctx := cmd.Context()
+			if len(args) == 1 {
+				height := args[0]
+				_, err := strconv.ParseInt(height, 10, 64)
+				if err != nil {
+					return fmt.Errorf("invalid height: %w", err)
+				}
+
+				ctx = metadata.AppendToOutgoingContext(ctx, grpctypes.GRPCBlockHeightHeader, height)
+			}
+
+			queryClient := types.NewQueryClient(clientCtx)
+
+			res, err := queryClient.BlockGas(ctx, &types.QueryBlockGasRequest{})
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+	return cmd
+}
+
+// GetParamsCmd queries the fee market params
+func GetParamsCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "params",
+		Short: "Get the fee market params",
+		Long:  "Get the fee market parameter values.",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			queryClient := types.NewQueryClient(clientCtx)
+
+			res, err := queryClient.Params(cmd.Context(), &types.QueryParamsRequest{})
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+	return cmd
+}
+
+// GetBaseFeeCmd queries the base fee at a given height
+func GetBaseFeeCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "base-fee [height]",
+		Short: "Get the base fee amount at a given block height",
+		Long:  "Get the base fee amount at a given block height. If the height is not provided, it will use the latest height from context.",
+		Args:  cobra.RangeArgs(0, 1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			ctx := cmd.Context()
+			if len(args) == 1 {
+				height := args[0]
+				_, err := strconv.ParseInt(height, 10, 64)
+				if err != nil {
+					return fmt.Errorf("invalid height: %w", err)
+				}
+
+				ctx = metadata.AppendToOutgoingContext(ctx, grpctypes.GRPCBlockHeightHeader, height)
+			}
+
+			queryClient := types.NewQueryClient(clientCtx)
+
+			res, err := queryClient.BaseFee(ctx, &types.QueryBaseFeeRequest{})
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+	return cmd
+}

x/feemarket/genesis.go

@@ -0,0 +1,38 @@
+package feemarket
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	abci "github.com/tendermint/tendermint/abci/types"
+
+	"github.com/tharsis/ethermint/x/feemarket/keeper"
+	"github.com/tharsis/ethermint/x/feemarket/types"
+)
+
+// InitGenesis initializes genesis state based on exported genesis
+func InitGenesis(
+	ctx sdk.Context,
+	k keeper.Keeper,
+	data types.GenesisState,
+) []abci.ValidatorUpdate {
+
+	k.SetParams(ctx, data.Params)
+	k.SetBaseFee(ctx, data.BaseFee.BigInt())
+	k.SetBlockGasUsed(ctx, data.BlockGas)
+
+	return []abci.ValidatorUpdate{}
+}
+
+// ExportGenesis exports genesis state of the fee market module
+func ExportGenesis(ctx sdk.Context, k keeper.Keeper) *types.GenesisState {
+	baseFee := sdk.ZeroInt()
+	baseFeeInt := k.GetBaseFee(ctx)
+	if baseFeeInt != nil {
+		baseFee = sdk.NewIntFromBigInt(baseFeeInt)
+	}
+
+	return &types.GenesisState{
+		Params:   k.GetParams(ctx),
+		BaseFee:  baseFee,
+		BlockGas: k.GetBlockGasUsed(ctx),
+	}
+}

x/feemarket/keeper/abci.go

@@ -0,0 +1,43 @@
+package keeper
+
+import (
+	"fmt"
+	"time"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+
+	"github.com/cosmos/cosmos-sdk/telemetry"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/tharsis/ethermint/x/feemarket/types"
+)
+
+// EndBlock also retrieves the bloom filter value from the transient store and commits it to the
+// KVStore. The EVM end block logic doesn't update the validator set, thus it returns
+// an empty slice.
+func (k *Keeper) EndBlock(ctx sdk.Context, req abci.RequestEndBlock) {
+	defer telemetry.ModuleMeasureSince(types.ModuleName, time.Now(), telemetry.MetricKeyEndBlocker)
+
+	baseFee := k.CalculateBaseFee(ctx)
+	if baseFee == nil {
+		return
+	}
+
+	// only set base fee if the NoBaseFee param is false
+	k.SetBaseFee(ctx, baseFee)
+
+	if ctx.BlockGasMeter() == nil {
+		k.Logger(ctx).Error("block gas meter is nil when setting block gas used")
+		return
+	}
+
+	gasUsed := ctx.BlockGasMeter().GasConsumedToLimit()
+
+	k.SetBlockGasUsed(ctx, gasUsed)
+
+	ctx.EventManager().EmitEvent(sdk.NewEvent(
+		"block_gas",
+		sdk.NewAttribute("height", fmt.Sprintf("%d", ctx.BlockHeight())),
+		sdk.NewAttribute("amount", fmt.Sprintf("%d", ctx.BlockGasMeter().GasConsumedToLimit())),
+	))
+}

x/feemarket/keeper/eip1559.go

@@ -0,0 +1,79 @@
+package keeper
+
+import (
+	"math/big"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/math"
+)
+
+// CalculateBaseFee calculates the base fee for the current block. This is only calculated once per
+// block during EndBlock. If the NoBaseFee parameter is enabled, this function returns nil.
+// NOTE: This code is inspired from the go-ethereum EIP1559 implementation and adapted to Cosmos SDK-based
+// chains. For the canonical code refer to: https://github.com/ethereum/go-ethereum/blob/master/consensus/misc/eip1559.go
+func (k Keeper) CalculateBaseFee(ctx sdk.Context) *big.Int {
+	params := k.GetParams(ctx)
+
+	if params.NoBaseFee {
+		return nil
+	}
+
+	consParams := ctx.ConsensusParams()
+
+	// If the current block is the first EIP-1559 block, return the InitialBaseFee.
+	if ctx.BlockHeight() <= params.EnableHeight {
+		return new(big.Int).SetInt64(params.InitialBaseFee)
+	}
+
+	// get the block gas used and the base fee values for the parent block.
+	parentBaseFee := k.GetBaseFee(ctx)
+	if parentBaseFee == nil {
+		parentBaseFee = new(big.Int).SetInt64(params.InitialBaseFee)
+	}
+
+	parentGasUsed := k.GetBlockGasUsed(ctx)
+
+	gasLimit := new(big.Int).SetUint64(math.MaxUint64)
+	if consParams != nil && consParams.Block.MaxGas > -1 {
+		gasLimit = big.NewInt(consParams.Block.MaxGas)
+	}
+
+	parentGasTargetBig := new(big.Int).Div(gasLimit, new(big.Int).SetUint64(uint64(params.ElasticityMultiplier)))
+	if !parentGasTargetBig.IsUint64() {
+		return new(big.Int).SetInt64(params.InitialBaseFee)
+	}
+
+	parentGasTarget := parentGasTargetBig.Uint64()
+	baseFeeChangeDenominator := new(big.Int).SetUint64(uint64(params.BaseFeeChangeDenominator))
+
+	// If the parent gasUsed is the same as the target, the baseFee remains unchanged.
+	if parentGasUsed == parentGasTarget {
+		return new(big.Int).Set(parentBaseFee)
+	}
+
+	if parentGasUsed > parentGasTarget {
+		// If the parent block used more gas than its target, the baseFee should increase.
+		gasUsedDelta := new(big.Int).SetUint64(parentGasUsed - parentGasTarget)
+		x := new(big.Int).Mul(parentBaseFee, gasUsedDelta)
+		y := x.Div(x, parentGasTargetBig)
+		baseFeeDelta := math.BigMax(
+			x.Div(y, baseFeeChangeDenominator),
+			common.Big1,
+		)
+
+		return x.Add(parentBaseFee, baseFeeDelta)
+	}
+
+	// Otherwise if the parent block used less gas than its target, the baseFee should decrease.
+	gasUsedDelta := new(big.Int).SetUint64(parentGasTarget - parentGasUsed)
+	x := new(big.Int).Mul(parentBaseFee, gasUsedDelta)
+	y := x.Div(x, parentGasTargetBig)
+	baseFeeDelta := x.Div(y, baseFeeChangeDenominator)
+
+	return math.BigMax(
+		x.Sub(parentBaseFee, baseFeeDelta),
+		common.Big0,
+	)
+}

x/feemarket/keeper/grpc_query.go

@@ -0,0 +1,47 @@
+package keeper
+
+import (
+	"context"
+	"math/big"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/tharsis/ethermint/x/feemarket/types"
+)
+
+var _ types.QueryServer = Keeper{}
+
+// Params implements the Query/Params gRPC method
+func (k Keeper) Params(c context.Context, _ *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+	params := k.GetParams(ctx)
+
+	return &types.QueryParamsResponse{
+		Params: params,
+	}, nil
+}
+
+// BaseFee implements the Query/BaseFee gRPC method
+func (k Keeper) BaseFee(c context.Context, _ *types.QueryBaseFeeRequest) (*types.QueryBaseFeeResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+
+	baseFee := k.GetBaseFee(ctx)
+	if baseFee == nil {
+		// TODO: should this be 0? 1? error?
+		baseFee = big.NewInt(0)
+	}
+
+	return &types.QueryBaseFeeResponse{
+		BaseFee: sdk.NewIntFromBigInt(baseFee),
+	}, nil
+}
+
+// BlockGas implements the Query/BlockGas gRPC method
+func (k Keeper) BlockGas(c context.Context, _ *types.QueryBlockGasRequest) (*types.QueryBlockGasResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+	gas := k.GetBlockGasUsed(ctx)
+
+	return &types.QueryBlockGasResponse{
+		Gas: int64(gas),
+	}, nil
+}

x/feemarket/keeper/keeper.go

@@ -0,0 +1,91 @@
+package keeper
+
+import (
+	"math/big"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
+	"github.com/tendermint/tendermint/libs/log"
+
+	"github.com/tharsis/ethermint/x/feemarket/types"
+)
+
+// Keeper grants access to the Fee Market module state.
+type Keeper struct {
+	// Protobuf codec
+	cdc codec.BinaryCodec
+	// Store key required for the Fee Market Prefix KVStore.
+	storeKey sdk.StoreKey
+	// module specific parameter space that can be configured through governance
+	paramSpace paramtypes.Subspace
+}
+
+// NewKeeper generates new fee market module keeper
+func NewKeeper(
+	cdc codec.BinaryCodec, storeKey sdk.StoreKey, paramSpace paramtypes.Subspace,
+) Keeper {
+
+	// set KeyTable if it has not already been set
+	if !paramSpace.HasKeyTable() {
+		paramSpace = paramSpace.WithKeyTable(types.ParamKeyTable())
+	}
+
+	return Keeper{
+		cdc:        cdc,
+		storeKey:   storeKey,
+		paramSpace: paramSpace,
+	}
+}
+
+// Logger returns a module-specific logger.
+func (k Keeper) Logger(ctx sdk.Context) log.Logger {
+	return ctx.Logger().With("module", types.ModuleName)
+}
+
+// ----------------------------------------------------------------------------
+// Parent Block Gas Used
+// Required by EIP1559 base fee calculation.
+// ----------------------------------------------------------------------------
+
+// GetBlockGasUsed returns the last block gas used value from the store.
+func (k Keeper) GetBlockGasUsed(ctx sdk.Context) uint64 {
+	store := ctx.KVStore(k.storeKey)
+	bz := store.Get(types.KeyPrefixBlockGasUsed)
+	if len(bz) == 0 {
+		return 0
+	}
+
+	return sdk.BigEndianToUint64(bz)
+}
+
+// SetBlockGasUsed gets the block gas consumed to the store.
+// CONTRACT: this should be only called during EndBlock.
+func (k Keeper) SetBlockGasUsed(ctx sdk.Context, gas uint64) {
+	store := ctx.KVStore(k.storeKey)
+	gasBz := sdk.Uint64ToBigEndian(gas)
+	store.Set(types.KeyPrefixBlockGasUsed, gasBz)
+}
+
+// ----------------------------------------------------------------------------
+// Parent Base Fee
+// Required by EIP1559 base fee calculation.
+// ----------------------------------------------------------------------------
+
+// GetBlockGasUsed returns the last block gas used value from the store.
+func (k Keeper) GetBaseFee(ctx sdk.Context) *big.Int {
+	store := ctx.KVStore(k.storeKey)
+	bz := store.Get(types.KeyPrefixBaseFee)
+	if len(bz) == 0 {
+		return nil
+	}
+
+	return new(big.Int).SetBytes(bz)
+}
+
+// SetBlockGasUsed gets the current block gas consumed to the store.
+// CONTRACT: this should be only called during EndBlock.
+func (k Keeper) SetBaseFee(ctx sdk.Context, baseFee *big.Int) {
+	store := ctx.KVStore(k.storeKey)
+	store.Set(types.KeyPrefixBaseFee, baseFee.Bytes())
+}

x/feemarket/keeper/params.go

@@ -0,0 +1,18 @@
+package keeper
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/tharsis/ethermint/x/feemarket/types"
+)
+
+// GetParams returns the total set of fee market parameters.
+func (k Keeper) GetParams(ctx sdk.Context) (params types.Params) {
+	k.paramSpace.GetParamSet(ctx, &params)
+	return params
+}
+
+// SetParams sets the fee market parameters to the param space.
+func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
+	k.paramSpace.SetParamSet(ctx, &params)
+}

x/feemarket/module.go

@@ -0,0 +1,157 @@
+package feemarket
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/gorilla/mux"
+	"github.com/grpc-ecosystem/grpc-gateway/runtime"
+	"github.com/spf13/cobra"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/codec"
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/types/module"
+
+	"github.com/tharsis/ethermint/x/feemarket/client/cli"
+	"github.com/tharsis/ethermint/x/feemarket/keeper"
+	"github.com/tharsis/ethermint/x/feemarket/types"
+)
+
+var (
+	_ module.AppModule      = AppModule{}
+	_ module.AppModuleBasic = AppModuleBasic{}
+)
+
+// AppModuleBasic defines the basic application module used by the fee market module.
+type AppModuleBasic struct{}
+
+// Name returns the fee market module's name.
+func (AppModuleBasic) Name() string {
+	return types.ModuleName
+}
+
+// RegisterLegacyAminoCodec performs a no-op as the fee market module doesn't support amino.
+func (AppModuleBasic) RegisterLegacyAminoCodec(_ *codec.LegacyAmino) {
+}
+
+// ConsensusVersion returns the consensus state-breaking version for the module.
+func (AppModuleBasic) ConsensusVersion() uint64 {
+	return 1
+}
+
+// DefaultGenesis returns default genesis state as raw bytes for the fee market
+// module.
+func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
+	return cdc.MustMarshalJSON(types.DefaultGenesisState())
+}
+
+// ValidateGenesis is the validation check of the Genesis
+func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, _ client.TxEncodingConfig, bz json.RawMessage) error {
+	var genesisState types.GenesisState
+	if err := cdc.UnmarshalJSON(bz, &genesisState); err != nil {
+		return fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err)
+	}
+
+	return genesisState.Validate()
+}
+
+// RegisterRESTRoutes performs a no-op as the EVM module doesn't expose REST
+// endpoints
+func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {
+}
+
+func (b AppModuleBasic) RegisterGRPCGatewayRoutes(c client.Context, serveMux *runtime.ServeMux) {
+	if err := types.RegisterQueryHandlerClient(context.Background(), serveMux, types.NewQueryClient(c)); err != nil {
+		panic(err)
+	}
+}
+
+// GetTxCmd returns the root tx command for the fee market module.
+func (AppModuleBasic) GetTxCmd() *cobra.Command {
+	return nil
+}
+
+// GetQueryCmd returns no root query command for the fee market module.
+func (AppModuleBasic) GetQueryCmd() *cobra.Command {
+	return cli.GetQueryCmd()
+}
+
+// RegisterInterfaces registers interfaces and implementations of the fee market module.
+func (AppModuleBasic) RegisterInterfaces(_ codectypes.InterfaceRegistry) {}
+
+// ____________________________________________________________________________
+
+// AppModule implements an application module for the fee market module.
+type AppModule struct {
+	AppModuleBasic
+	keeper keeper.Keeper
+}
+
+// NewAppModule creates a new AppModule object
+func NewAppModule(k keeper.Keeper) AppModule {
+	return AppModule{
+		AppModuleBasic: AppModuleBasic{},
+		keeper:         k,
+	}
+}
+
+// Name returns the fee market module's name.
+func (AppModule) Name() string {
+	return types.ModuleName
+}
+
+// RegisterInvariants interface for registering invariants. Performs a no-op
+// as the fee market module doesn't expose invariants.
+func (am AppModule) RegisterInvariants(ir sdk.InvariantRegistry) {}
+
+// RegisterQueryService registers a GRPC query service to respond to the
+// module-specific GRPC queries.
+func (am AppModule) RegisterServices(cfg module.Configurator) {
+	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
+}
+
+// Route returns the message routing key for the fee market module.
+func (am AppModule) Route() sdk.Route {
+	return sdk.Route{}
+}
+
+// QuerierRoute returns the fee market module's querier route name.
+func (AppModule) QuerierRoute() string { return types.RouterKey }
+
+// LegacyQuerierHandler returns nil as the fee market module doesn't expose a legacy
+// Querier.
+func (am AppModule) LegacyQuerierHandler(legacyQuerierCdc *codec.LegacyAmino) sdk.Querier {
+	return nil
+}
+
+// BeginBlock returns the begin block for the fee market module.
+func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {}
+
+// EndBlock returns the end blocker for the fee market module. It returns no validator
+// updates.
+func (am AppModule) EndBlock(ctx sdk.Context, req abci.RequestEndBlock) []abci.ValidatorUpdate {
+	am.keeper.EndBlock(ctx, req)
+	return []abci.ValidatorUpdate{}
+}
+
+// InitGenesis performs genesis initialization for the fee market module. It returns
+// no validator updates.
+func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {
+	var genesisState types.GenesisState
+
+	cdc.MustUnmarshalJSON(data, &genesisState)
+	InitGenesis(ctx, am.keeper, genesisState)
+	return []abci.ValidatorUpdate{}
+}
+
+// ExportGenesis returns the exported genesis state as raw bytes for the fee market
+// module.
+func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
+	gs := ExportGenesis(ctx, am.keeper)
+	return cdc.MustMarshalJSON(gs)
+}

x/feemarket/types/feemarket.pb.go

@@ -0,0 +1,462 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: ethermint/feemarket/v1/feemarket.proto
+
+package types
+
+import (
+	fmt "fmt"
+	_ "github.com/gogo/protobuf/gogoproto"
+	proto "github.com/gogo/protobuf/proto"
+	io "io"
+	math "math"
+	math_bits "math/bits"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+// Params defines the EVM module parameters
+type Params struct {
+	// no base fee forces the EIP-1559 base fee to 0 (needed for 0 price calls)
+	NoBaseFee bool `protobuf:"varint,1,opt,name=no_base_fee,json=noBaseFee,proto3" json:"no_base_fee,omitempty"`
+	// base fee change denominator bounds the amount the base fee can change between blocks.
+	BaseFeeChangeDenominator uint32 `protobuf:"varint,2,opt,name=base_fee_change_denominator,json=baseFeeChangeDenominator,proto3" json:"base_fee_change_denominator,omitempty"`
+	// elasticity multiplier bounds the maximum gas limit an EIP-1559 block may have.
+	ElasticityMultiplier uint32 `protobuf:"varint,3,opt,name=elasticity_multiplier,json=elasticityMultiplier,proto3" json:"elasticity_multiplier,omitempty"`
+	// initial base fee for EIP-1559 blocks.
+	InitialBaseFee int64 `protobuf:"varint,4,opt,name=initial_base_fee,json=initialBaseFee,proto3" json:"initial_base_fee,omitempty"`
+	// height at which the base fee calculation is enabled.
+	EnableHeight int64 `protobuf:"varint,5,opt,name=enable_height,json=enableHeight,proto3" json:"enable_height,omitempty"`
+}
+
+func (m *Params) Reset()         { *m = Params{} }
+func (m *Params) String() string { return proto.CompactTextString(m) }
+func (*Params) ProtoMessage()    {}
+func (*Params) Descriptor() ([]byte, []int) {
+	return fileDescriptor_4feb8b20cf98e6e1, []int{0}
+}
+func (m *Params) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *Params) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_Params.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *Params) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Params.Merge(m, src)
+}
+func (m *Params) XXX_Size() int {
+	return m.Size()
+}
+func (m *Params) XXX_DiscardUnknown() {
+	xxx_messageInfo_Params.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Params proto.InternalMessageInfo
+
+func (m *Params) GetNoBaseFee() bool {
+	if m != nil {
+		return m.NoBaseFee
+	}
+	return false
+}
+
+func (m *Params) GetBaseFeeChangeDenominator() uint32 {
+	if m != nil {
+		return m.BaseFeeChangeDenominator
+	}
+	return 0
+}
+
+func (m *Params) GetElasticityMultiplier() uint32 {
+	if m != nil {
+		return m.ElasticityMultiplier
+	}
+	return 0
+}
+
+func (m *Params) GetInitialBaseFee() int64 {
+	if m != nil {
+		return m.InitialBaseFee
+	}
+	return 0
+}
+
+func (m *Params) GetEnableHeight() int64 {
+	if m != nil {
+		return m.EnableHeight
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*Params)(nil), "ethermint.feemarket.v1.Params")
+}
+
+func init() {
+	proto.RegisterFile("ethermint/feemarket/v1/feemarket.proto", fileDescriptor_4feb8b20cf98e6e1)
+}
+
+var fileDescriptor_4feb8b20cf98e6e1 = []byte{
+	// 298 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0x90, 0xc1, 0x4a, 0x33, 0x31,
+	0x14, 0x85, 0x9b, 0xbf, 0xbf, 0x45, 0xa3, 0x15, 0x19, 0xaa, 0x0c, 0x0a, 0xa1, 0x28, 0xc8, 0xac,
+	0x66, 0x28, 0x5d, 0xbb, 0xa9, 0x22, 0xdd, 0x08, 0xd2, 0xa5, 0x9b, 0x21, 0x53, 0x6f, 0x67, 0x2e,
+	0x4e, 0x92, 0x92, 0xdc, 0x16, 0xfb, 0x16, 0x3e, 0x96, 0xcb, 0x2e, 0x5d, 0x4a, 0xbb, 0xf4, 0x25,
+	0xc4, 0xd4, 0x36, 0xee, 0x92, 0xf3, 0x7d, 0x17, 0x0e, 0x87, 0x5f, 0x03, 0x55, 0x60, 0x15, 0x6a,
+	0xca, 0x26, 0x00, 0x4a, 0xda, 0x17, 0xa0, 0x6c, 0xde, 0x0b, 0x9f, 0x74, 0x6a, 0x0d, 0x99, 0xe8,
+	0x6c, 0xe7, 0xa5, 0x01, 0xcd, 0x7b, 0xe7, 0x9d, 0xd2, 0x94, 0xc6, 0x2b, 0xd9, 0xcf, 0x6b, 0x63,
+	0x5f, 0x7e, 0x31, 0xde, 0x7a, 0x94, 0x56, 0x2a, 0x17, 0x09, 0x7e, 0xa8, 0x4d, 0x5e, 0x48, 0x07,
+	0xf9, 0x04, 0x20, 0x66, 0x5d, 0x96, 0xec, 0x8f, 0x0e, 0xb4, 0x19, 0x48, 0x07, 0xf7, 0x00, 0xd1,
+	0x0d, 0xbf, 0xd8, 0xc2, 0x7c, 0x5c, 0x49, 0x5d, 0x42, 0xfe, 0x0c, 0xda, 0x28, 0xd4, 0x92, 0x8c,
+	0x8d, 0xff, 0x75, 0x59, 0xd2, 0x1e, 0xc5, 0xc5, 0xc6, 0xbe, 0xf5, 0xc2, 0x5d, 0xe0, 0x51, 0x9f,
+	0x9f, 0x42, 0x2d, 0x1d, 0xe1, 0x18, 0x69, 0x91, 0xab, 0x59, 0x4d, 0x38, 0xad, 0x11, 0x6c, 0xdc,
+	0xf4, 0x87, 0x9d, 0x00, 0x1f, 0x76, 0x2c, 0x4a, 0xf8, 0x09, 0x6a, 0x24, 0x94, 0x75, 0x28, 0xf6,
+	0xbf, 0xcb, 0x92, 0xe6, 0xe8, 0xf8, 0x37, 0xdf, 0xb6, 0xbb, 0xe2, 0x6d, 0xd0, 0xb2, 0xa8, 0x21,
+	0xaf, 0x00, 0xcb, 0x8a, 0xe2, 0x3d, 0xaf, 0x1d, 0x6d, 0xc2, 0xa1, 0xcf, 0x06, 0xc3, 0xf7, 0x95,
+	0x60, 0xcb, 0x95, 0x60, 0x9f, 0x2b, 0xc1, 0xde, 0xd6, 0xa2, 0xb1, 0x5c, 0x8b, 0xc6, 0xc7, 0x5a,
+	0x34, 0x9e, 0xd2, 0x12, 0xa9, 0x9a, 0x15, 0xe9, 0xd8, 0xa8, 0x8c, 0x2a, 0x69, 0x1d, 0xba, 0x2c,
+	0x0c, 0xfe, 0xfa, 0x67, 0x72, 0x5a, 0x4c, 0xc1, 0x15, 0x2d, 0x3f, 0x5f, 0xff, 0x3b, 0x00, 0x00,
+	0xff, 0xff, 0x69, 0x30, 0x96, 0xce, 0x96, 0x01, 0x00, 0x00,
+}
+
+func (m *Params) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *Params) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *Params) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.EnableHeight != 0 {
+		i = encodeVarintFeemarket(dAtA, i, uint64(m.EnableHeight))
+		i--
+		dAtA[i] = 0x28
+	}
+	if m.InitialBaseFee != 0 {
+		i = encodeVarintFeemarket(dAtA, i, uint64(m.InitialBaseFee))
+		i--
+		dAtA[i] = 0x20
+	}
+	if m.ElasticityMultiplier != 0 {
+		i = encodeVarintFeemarket(dAtA, i, uint64(m.ElasticityMultiplier))
+		i--
+		dAtA[i] = 0x18
+	}
+	if m.BaseFeeChangeDenominator != 0 {
+		i = encodeVarintFeemarket(dAtA, i, uint64(m.BaseFeeChangeDenominator))
+		i--
+		dAtA[i] = 0x10
+	}
+	if m.NoBaseFee {
+		i--
+		if m.NoBaseFee {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i--
+		dAtA[i] = 0x8
+	}
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintFeemarket(dAtA []byte, offset int, v uint64) int {
+	offset -= sovFeemarket(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *Params) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.NoBaseFee {
+		n += 2
+	}
+	if m.BaseFeeChangeDenominator != 0 {
+		n += 1 + sovFeemarket(uint64(m.BaseFeeChangeDenominator))
+	}
+	if m.ElasticityMultiplier != 0 {
+		n += 1 + sovFeemarket(uint64(m.ElasticityMultiplier))
+	}
+	if m.InitialBaseFee != 0 {
+		n += 1 + sovFeemarket(uint64(m.InitialBaseFee))
+	}
+	if m.EnableHeight != 0 {
+		n += 1 + sovFeemarket(uint64(m.EnableHeight))
+	}
+	return n
+}
+
+func sovFeemarket(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozFeemarket(x uint64) (n int) {
+	return sovFeemarket(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *Params) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowFeemarket
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: Params: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: Params: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field NoBaseFee", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowFeemarket
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.NoBaseFee = bool(v != 0)
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field BaseFeeChangeDenominator", wireType)
+			}
+			m.BaseFeeChangeDenominator = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowFeemarket
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.BaseFeeChangeDenominator |= uint32(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 3:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ElasticityMultiplier", wireType)
+			}
+			m.ElasticityMultiplier = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowFeemarket
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.ElasticityMultiplier |= uint32(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 4:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field InitialBaseFee", wireType)
+			}
+			m.InitialBaseFee = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowFeemarket
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.InitialBaseFee |= int64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 5:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field EnableHeight", wireType)
+			}
+			m.EnableHeight = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowFeemarket
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.EnableHeight |= int64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		default:
+			iNdEx = preIndex
+			skippy, err := skipFeemarket(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthFeemarket
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipFeemarket(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	depth := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowFeemarket
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowFeemarket
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+		case 1:
+			iNdEx += 8
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowFeemarket
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if length < 0 {
+				return 0, ErrInvalidLengthFeemarket
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupFeemarket
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthFeemarket
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthFeemarket        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowFeemarket          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupFeemarket = fmt.Errorf("proto: unexpected end of group")
+)

x/feemarket/types/genesis.go

@@ -0,0 +1,26 @@
+package types
+
+import (
+	"fmt"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// DefaultGenesisState sets default fee market genesis state.
+func DefaultGenesisState() *GenesisState {
+	return &GenesisState{
+		Params:   DefaultParams(),
+		BaseFee:  sdk.ZeroInt(),
+		BlockGas: 0,
+	}
+}
+
+// Validate performs basic genesis state validation returning an error upon any
+// failure.
+func (gs GenesisState) Validate() error {
+	if gs.BaseFee.IsNegative() {
+		return fmt.Errorf("base fee cannot be negative: %s", gs.BaseFee)
+	}
+
+	return gs.Params.Validate()
+}

x/feemarket/types/genesis.pb.go

@@ -0,0 +1,416 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: ethermint/feemarket/v1/genesis.proto
+
+package types
+
+import (
+	fmt "fmt"
+	github_com_cosmos_cosmos_sdk_types "github.com/cosmos/cosmos-sdk/types"
+	_ "github.com/gogo/protobuf/gogoproto"
+	proto "github.com/gogo/protobuf/proto"
+	io "io"
+	math "math"
+	math_bits "math/bits"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+// GenesisState defines the feemarket module's genesis state.
+type GenesisState struct {
+	// params defines all the paramaters of the module.
+	Params Params `protobuf:"bytes,1,opt,name=params,proto3" json:"params"`
+	// base fee is the exported value from previous software version.
+	// Zero by default.
+	BaseFee github_com_cosmos_cosmos_sdk_types.Int `protobuf:"bytes,2,opt,name=base_fee,json=baseFee,proto3,customtype=github.com/cosmos/cosmos-sdk/types.Int" json:"base_fee"`
+	// block gas is the amount of gas used on the last block before the upgrade.
+	// Zero by default.
+	BlockGas uint64 `protobuf:"varint,3,opt,name=block_gas,json=blockGas,proto3" json:"block_gas,omitempty"`
+}
+
+func (m *GenesisState) Reset()         { *m = GenesisState{} }
+func (m *GenesisState) String() string { return proto.CompactTextString(m) }
+func (*GenesisState) ProtoMessage()    {}
+func (*GenesisState) Descriptor() ([]byte, []int) {
+	return fileDescriptor_6241c21661288629, []int{0}
+}
+func (m *GenesisState) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *GenesisState) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_GenesisState.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *GenesisState) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GenesisState.Merge(m, src)
+}
+func (m *GenesisState) XXX_Size() int {
+	return m.Size()
+}
+func (m *GenesisState) XXX_DiscardUnknown() {
+	xxx_messageInfo_GenesisState.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GenesisState proto.InternalMessageInfo
+
+func (m *GenesisState) GetParams() Params {
+	if m != nil {
+		return m.Params
+	}
+	return Params{}
+}
+
+func (m *GenesisState) GetBlockGas() uint64 {
+	if m != nil {
+		return m.BlockGas
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*GenesisState)(nil), "ethermint.feemarket.v1.GenesisState")
+}
+
+func init() {
+	proto.RegisterFile("ethermint/feemarket/v1/genesis.proto", fileDescriptor_6241c21661288629)
+}
+
+var fileDescriptor_6241c21661288629 = []byte{
+	// 286 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x90, 0x31, 0x4b, 0xc3, 0x40,
+	0x14, 0xc7, 0x73, 0x5a, 0x6a, 0x1b, 0x9d, 0x82, 0x48, 0xa9, 0x70, 0x0d, 0x22, 0x25, 0x8b, 0x77,
+	0x54, 0x57, 0xa7, 0x0c, 0xd6, 0x6e, 0x12, 0x37, 0x97, 0x72, 0x89, 0xaf, 0x49, 0x88, 0xc9, 0x85,
+	0x7b, 0x67, 0xd1, 0x6f, 0xe1, 0x87, 0xf1, 0x43, 0x74, 0xec, 0x28, 0x0e, 0x45, 0x92, 0x2f, 0x22,
+	0xb9, 0x96, 0xb6, 0x83, 0x4e, 0x77, 0xbc, 0xf7, 0xfb, 0xbf, 0x1f, 0xfc, 0xed, 0x4b, 0xd0, 0x09,
+	0xa8, 0x3c, 0x2d, 0x34, 0x9f, 0x01, 0xe4, 0x42, 0x65, 0xa0, 0xf9, 0x7c, 0xc4, 0x63, 0x28, 0x00,
+	0x53, 0x64, 0xa5, 0x92, 0x5a, 0x3a, 0x67, 0x5b, 0x8a, 0x6d, 0x29, 0x36, 0x1f, 0xf5, 0x4f, 0x63,
+	0x19, 0x4b, 0x83, 0xf0, 0xe6, 0xb7, 0xa6, 0xfb, 0xc3, 0x7f, 0x6e, 0xee, 0xa2, 0x86, 0xbb, 0xf8,
+	0x24, 0xf6, 0xc9, 0x78, 0xed, 0x79, 0xd4, 0x42, 0x83, 0x73, 0x6b, 0xb7, 0x4b, 0xa1, 0x44, 0x8e,
+	0x3d, 0xe2, 0x12, 0xef, 0xf8, 0x9a, 0xb2, 0xbf, 0xbd, 0xec, 0xc1, 0x50, 0x7e, 0x6b, 0xb1, 0x1a,
+	0x58, 0xc1, 0x26, 0xe3, 0x4c, 0xec, 0x4e, 0x28, 0x10, 0xa6, 0x33, 0x80, 0xde, 0x81, 0x4b, 0xbc,
+	0xae, 0xcf, 0x9a, 0xfd, 0xf7, 0x6a, 0x30, 0x8c, 0x53, 0x9d, 0xbc, 0x86, 0x2c, 0x92, 0x39, 0x8f,
+	0x24, 0xe6, 0x12, 0x37, 0xcf, 0x15, 0x3e, 0x67, 0x5c, 0xbf, 0x97, 0x80, 0x6c, 0x52, 0xe8, 0xe0,
+	0xa8, 0xc9, 0xdf, 0x01, 0x38, 0xe7, 0x76, 0x37, 0x7c, 0x91, 0x51, 0x36, 0x8d, 0x05, 0xf6, 0x0e,
+	0x5d, 0xe2, 0xb5, 0x82, 0x8e, 0x19, 0x8c, 0x05, 0xfa, 0xf7, 0x8b, 0x8a, 0x92, 0x65, 0x45, 0xc9,
+	0x4f, 0x45, 0xc9, 0x47, 0x4d, 0xad, 0x65, 0x4d, 0xad, 0xaf, 0x9a, 0x5a, 0x4f, 0x6c, 0xcf, 0xa3,
+	0x13, 0xa1, 0x30, 0x45, 0xbe, 0xeb, 0xe2, 0x6d, 0xaf, 0x0d, 0xe3, 0x0c, 0xdb, 0xa6, 0x87, 0x9b,
+	0xdf, 0x00, 0x00, 0x00, 0xff, 0xff, 0x41, 0xbf, 0x7e, 0x16, 0x85, 0x01, 0x00, 0x00,
+}
+
+func (m *GenesisState) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *GenesisState) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *GenesisState) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.BlockGas != 0 {
+		i = encodeVarintGenesis(dAtA, i, uint64(m.BlockGas))
+		i--
+		dAtA[i] = 0x18
+	}
+	{
+		size := m.BaseFee.Size()
+		i -= size
+		if _, err := m.BaseFee.MarshalTo(dAtA[i:]); err != nil {
+			return 0, err
+		}
+		i = encodeVarintGenesis(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0x12
+	{
+		size, err := m.Params.MarshalToSizedBuffer(dAtA[:i])
+		if err != nil {
+			return 0, err
+		}
+		i -= size
+		i = encodeVarintGenesis(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0xa
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintGenesis(dAtA []byte, offset int, v uint64) int {
+	offset -= sovGenesis(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *GenesisState) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = m.Params.Size()
+	n += 1 + l + sovGenesis(uint64(l))
+	l = m.BaseFee.Size()
+	n += 1 + l + sovGenesis(uint64(l))
+	if m.BlockGas != 0 {
+		n += 1 + sovGenesis(uint64(m.BlockGas))
+	}
+	return n
+}
+
+func sovGenesis(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozGenesis(x uint64) (n int) {
+	return sovGenesis(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *GenesisState) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGenesis
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: GenesisState: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: GenesisState: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Params", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.Params.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field BaseFee", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.BaseFee.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 3:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field BlockGas", wireType)
+			}
+			m.BlockGas = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.BlockGas |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGenesis(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthGenesis
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipGenesis(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	depth := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowGenesis
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+		case 1:
+			iNdEx += 8
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowGenesis
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if length < 0 {
+				return 0, ErrInvalidLengthGenesis
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupGenesis
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthGenesis
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthGenesis        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowGenesis          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupGenesis = fmt.Errorf("proto: unexpected end of group")
+)

x/feemarket/types/keys.go

@@ -0,0 +1,25 @@
+package types
+
+const (
+	// ModuleName string name of module
+	ModuleName = "feemarket"
+
+	// StoreKey key for base fee and block gas used.
+	// The Fee Market module should use a prefix store.
+	StoreKey = ModuleName
+
+	// RouterKey uses module name for routing
+	RouterKey = ModuleName
+)
+
+// prefix bytes for the EVM persistent store
+const (
+	prefixBlockGasUsed = iota + 1
+	prefixBaseFee
+)
+
+// KVStore key prefixes
+var (
+	KeyPrefixBlockGasUsed = []byte{prefixBlockGasUsed}
+	KeyPrefixBaseFee      = []byte{prefixBaseFee}
+)

x/feemarket/types/params.go

@@ -0,0 +1,136 @@
+package types
+
+import (
+	"fmt"
+	"math"
+
+	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
+)
+
+const (
+	DefaultBaseFeeChangeDenominator = 8
+	DefaultElasticityMultiplier     = 2
+	DefaultInitialBaseFee           = 1000000000
+)
+
+var _ paramtypes.ParamSet = &Params{}
+
+// Parameter keys
+var (
+	ParamStoreKeyNoBaseFee                = []byte("NoBaseFee")
+	ParamStoreKeyBaseFeeChangeDenominator = []byte("BaseFeeChangeDenominator")
+	ParamStoreKeyElasticityMultiplier     = []byte("ElasticityMultiplier")
+	ParamStoreKeyInitialBaseFee           = []byte("InitialBaseFee")
+	ParamStoreKeyEnableHeight             = []byte("EnableHeight")
+)
+
+// ParamKeyTable returns the parameter key table.
+func ParamKeyTable() paramtypes.KeyTable {
+	return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
+}
+
+// NewParams creates a new Params instance
+func NewParams(noBaseFee bool, baseFeeChangeDenom, elasticityMultiplier uint32, initialBaseFee, enableHeight int64) Params {
+	return Params{
+		NoBaseFee:                noBaseFee,
+		BaseFeeChangeDenominator: baseFeeChangeDenom,
+		ElasticityMultiplier:     elasticityMultiplier,
+		InitialBaseFee:           initialBaseFee,
+		EnableHeight:             enableHeight,
+	}
+}
+
+// DefaultParams returns default evm parameters
+func DefaultParams() Params {
+	// TODO: use geth parameters
+	return Params{
+		NoBaseFee:                true,
+		BaseFeeChangeDenominator: DefaultBaseFeeChangeDenominator,
+		ElasticityMultiplier:     DefaultElasticityMultiplier,
+		InitialBaseFee:           DefaultInitialBaseFee,
+		EnableHeight:             math.MaxInt64,
+	}
+}
+
+// ParamSetPairs returns the parameter set pairs.
+func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
+	return paramtypes.ParamSetPairs{
+		paramtypes.NewParamSetPair(ParamStoreKeyNoBaseFee, &p.NoBaseFee, validateBool),
+		paramtypes.NewParamSetPair(ParamStoreKeyBaseFeeChangeDenominator, &p.BaseFeeChangeDenominator, validateBaseFeeChangeDenominator),
+		paramtypes.NewParamSetPair(ParamStoreKeyElasticityMultiplier, &p.ElasticityMultiplier, validateElasticityMultiplier),
+		paramtypes.NewParamSetPair(ParamStoreKeyInitialBaseFee, &p.InitialBaseFee, validateInitialBaseFee),
+		paramtypes.NewParamSetPair(ParamStoreKeyEnableHeight, &p.EnableHeight, validateEnableHeight),
+	}
+}
+
+// Validate performs basic validation on fee market parameters.
+func (p Params) Validate() error {
+	if p.BaseFeeChangeDenominator == 0 {
+		return fmt.Errorf("base fee change denominator cannot be 0")
+	}
+
+	if p.InitialBaseFee < 0 {
+		return fmt.Errorf("initial base fee cannot be negative: %d", p.InitialBaseFee)
+	}
+
+	if p.EnableHeight < 0 {
+		return fmt.Errorf("enable height cannot be negative: %d", p.EnableHeight)
+	}
+
+	return nil
+}
+
+func validateBool(i interface{}) error {
+	_, ok := i.(bool)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+	return nil
+}
+
+func validateBaseFeeChangeDenominator(i interface{}) error {
+	value, ok := i.(uint32)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+
+	if value == 0 {
+		return fmt.Errorf("base fee change denominator cannot be 0")
+	}
+
+	return nil
+}
+
+func validateElasticityMultiplier(i interface{}) error {
+	_, ok := i.(uint32)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+	return nil
+}
+
+func validateInitialBaseFee(i interface{}) error {
+	value, ok := i.(int64)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+
+	if value < 0 {
+		return fmt.Errorf("initial base fee cannot be negative: %d", value)
+	}
+
+	return nil
+}
+
+func validateEnableHeight(i interface{}) error {
+	value, ok := i.(int64)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+
+	if value < 0 {
+		return fmt.Errorf("enable height cannot be negative: %d", value)
+	}
+
+	return nil
+}

x/feemarket/types/query.pb.gw.go

@@ -0,0 +1,272 @@
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
+// source: ethermint/feemarket/v1/query.proto
+
+/*
+Package types is a reverse proxy.
+
+It translates gRPC into RESTful JSON APIs.
+*/
+package types
+
+import (
+	"context"
+	"io"
+	"net/http"
+
+	"github.com/golang/protobuf/descriptor"
+	"github.com/golang/protobuf/proto"
+	"github.com/grpc-ecosystem/grpc-gateway/runtime"
+	"github.com/grpc-ecosystem/grpc-gateway/utilities"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/status"
+)
+
+// Suppress "imported and not used" errors
+var _ codes.Code
+var _ io.Reader
+var _ status.Status
+var _ = runtime.String
+var _ = utilities.NewDoubleArray
+var _ = descriptor.ForMessage
+
+func request_Query_Params_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryParamsRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := client.Params(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_Params_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryParamsRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := server.Params(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+func request_Query_BaseFee_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryBaseFeeRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := client.BaseFee(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_BaseFee_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryBaseFeeRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := server.BaseFee(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+func request_Query_BlockGas_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryBlockGasRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := client.BlockGas(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_BlockGas_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryBlockGasRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := server.BlockGas(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+// RegisterQueryHandlerServer registers the http handlers for service Query to "mux".
+// UnaryRPC     :call QueryServer directly.
+// StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
+// Note that using this registration option will cause many gRPC library features (such as grpc.SendHeader, etc) to stop working. Consider using RegisterQueryHandlerFromEndpoint instead.
+func RegisterQueryHandlerServer(ctx context.Context, mux *runtime.ServeMux, server QueryServer) error {
+
+	mux.Handle("GET", pattern_Query_Params_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Query_Params_0(rctx, inboundMarshaler, server, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_Params_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_BaseFee_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Query_BaseFee_0(rctx, inboundMarshaler, server, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_BaseFee_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_BlockGas_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Query_BlockGas_0(rctx, inboundMarshaler, server, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_BlockGas_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	return nil
+}
+
+// RegisterQueryHandlerFromEndpoint is same as RegisterQueryHandler but
+// automatically dials to "endpoint" and closes the connection when "ctx" gets done.
+func RegisterQueryHandlerFromEndpoint(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) (err error) {
+	conn, err := grpc.Dial(endpoint, opts...)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err != nil {
+			if cerr := conn.Close(); cerr != nil {
+				grpclog.Infof("Failed to close conn to %s: %v", endpoint, cerr)
+			}
+			return
+		}
+		go func() {
+			<-ctx.Done()
+			if cerr := conn.Close(); cerr != nil {
+				grpclog.Infof("Failed to close conn to %s: %v", endpoint, cerr)
+			}
+		}()
+	}()
+
+	return RegisterQueryHandler(ctx, mux, conn)
+}
+
+// RegisterQueryHandler registers the http handlers for service Query to "mux".
+// The handlers forward requests to the grpc endpoint over "conn".
+func RegisterQueryHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc.ClientConn) error {
+	return RegisterQueryHandlerClient(ctx, mux, NewQueryClient(conn))
+}
+
+// RegisterQueryHandlerClient registers the http handlers for service Query
+// to "mux". The handlers forward requests to the grpc endpoint over the given implementation of "QueryClient".
+// Note: the gRPC framework executes interceptors within the gRPC handler. If the passed in "QueryClient"
+// doesn't go through the normal gRPC flow (creating a gRPC client etc.) then it will be up to the passed in
+// "QueryClient" to call the correct interceptors.
+func RegisterQueryHandlerClient(ctx context.Context, mux *runtime.ServeMux, client QueryClient) error {
+
+	mux.Handle("GET", pattern_Query_Params_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Query_Params_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_Params_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_BaseFee_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Query_BaseFee_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_BaseFee_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_BlockGas_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Query_BlockGas_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_BlockGas_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	return nil
+}
+
+var (
+	pattern_Query_Params_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"feemarket", "evm", "v1", "params"}, "", runtime.AssumeColonVerbOpt(true)))
+
+	pattern_Query_BaseFee_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"feemarket", "evm", "v1", "base_fee"}, "", runtime.AssumeColonVerbOpt(true)))
+
+	pattern_Query_BlockGas_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"feemarket", "evm", "v1", "block_gas"}, "", runtime.AssumeColonVerbOpt(true)))
+)
+
+var (
+	forward_Query_Params_0 = runtime.ForwardResponseMessage
+
+	forward_Query_BaseFee_0 = runtime.ForwardResponseMessage
+
+	forward_Query_BlockGas_0 = runtime.ForwardResponseMessage
+)