feat: fee market module (#491)

* feat: fee market module

* update proto

* queriers: CLI + gRPC

* gov params

* genesis

* enable height

* fixes

* fix app

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)
+}