feat(feemarket): add proto

proto/feemarket/feemarket/module/v1/module.proto

@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+package feemarket.feemarket.module.v1;
+
+import "cosmos/app/v1alpha1/module.proto";
+
+// Module is the config object of the builder module.
+message Module {
+  option (cosmos.app.v1alpha1.module) = {
+    go_import : "github.com/skip-mev/feemarket/x/feemarket"
+  };
+
+  // Authority defines the custom module authority. If not set, defaults to the
+  // governance module.
+  string authority = 1;
+}

proto/feemarket/feemarket/v1/feemarket.proto

@@ -0,0 +1,17 @@
+syntax = "proto3";
+package feemarket.feemarket.v1;
+
+option go_package = "github.com/skip-mev/feemarket/x/feemarket/types";
+
+import "google/protobuf/any.proto";
+import "cosmos_proto/cosmos.proto";
+
+// FeeMarket is the fee market implementation to be used by the x/feemarket
+// module.
+message FeeMarket {
+  // Implementation is a byte array that must implement
+  // x/feemarket/types/FeeMarketImplementation
+  bytes implementation = 1
+      [ (cosmos_proto.accepts_interface) =
+            "feemarket.feemarket.v1.FeeMarketImplementation" ];
+}

proto/feemarket/feemarket/v1/genesis.proto

@@ -0,0 +1,23 @@
+syntax = "proto3";
+package feemarket.feemarket.v1;
+
+option go_package = "github.com/skip-mev/feemarket/x/feemarket/types";
+
+import "gogoproto/gogo.proto";
+import "cosmos_proto/cosmos.proto";
+import "feemarket/feemarket/v1/feemarket.proto";
+
+// GenesisState defines the feemarket module's genesis state.
+message GenesisState {
+  // Plugin is the FeeMarket implementation plugged into the feemarket module.
+  FeeMarket plugin = 1 [ (gogoproto.nullable) = false ];
+
+  // Params are the parameters for the feemarket module.
+  Params params = 2 [ (gogoproto.nullable) = false ];
+}
+
+// Params defines the parameters for the feemarket module.
+message Params {
+  // Enabled is a flag to enable or disable the feemarket module.
+  bool enabled = 1;
+}

proto/feemarket/feemarket/v1/mock.proto

@@ -0,0 +1,15 @@
+syntax = "proto3";
+package feemarket.feemarket.v1;
+
+option go_package = "github.com/skip-mev/feemarket/x/feemarket/plugins/mock";
+
+import "cosmos_proto/cosmos.proto";
+
+// MockFeeMarket is a message that contains the information about a mock fee
+// market implementation.
+//
+// NOTE: This is an example of a mock fee market. It is not used in production.
+message MockFeeMarket {
+  option (cosmos_proto.implements_interface) =
+      "feemarket.feemarket.v1.FeeMarketImplementation";
+}

proto/feemarket/feemarket/v1/query.proto

@@ -0,0 +1,24 @@
+syntax = "proto3";
+package feemarket.feemarket.v1;
+
+option go_package = "github.com/skip-mev/feemarket/x/feemarket/types";
+
+import "gogoproto/gogo.proto";
+import "google/api/annotations.proto";
+import "feemarket/feemarket/v1/genesis.proto";
+
+// Query Service for the feemarket module.
+service Query {
+  // Params returns the current feemarket module parameters.
+  rpc Params(ParamsRequest) returns (ParamsResponse) {
+    option (google.api.http) = {
+      get : "/feemarket/feemarket/v1/params"
+    };
+  };
+}
+
+// QueryParamsRequest is the request type for the Query/Params RPC method.
+message ParamsRequest {}
+
+// QueryParamsResponse is the response type for the Query/Params RPC method.
+message ParamsResponse { Params params = 1 [ (gogoproto.nullable) = false ]; }

proto/feemarket/feemarket/v1/tx.proto

@@ -0,0 +1,33 @@
+syntax = "proto3";
+package feemarket.feemarket.v1;
+
+import "feemarket/feemarket/v1/genesis.proto";
+import "cosmos_proto/cosmos.proto";
+import "cosmos/msg/v1/msg.proto";
+import "gogoproto/gogo.proto";
+
+option go_package = "github.com/skip-mev/feemarket/x/feemarket/types";
+
+// Message service defines the types of messages supported by the feemarket
+// module.
+service Msg {
+  option (cosmos.msg.v1.service) = true;
+
+  // Params defines a method for updating the feemarket module parameters.
+  rpc Params(MsgParams) returns (MsgParamsResponse);
+}
+
+// MsgParams defines the Msg/Params request type. It contains the
+// new parameters for the feemarket module.
+message MsgParams {
+  option (cosmos.msg.v1.signer) = "from_address";
+
+  // Params defines the new parameters for the feemarket module.
+  Params params = 1 [ (gogoproto.nullable) = false ];
+  // Authority defines the authority that is updating the feemarket module
+  // parameters.
+  string authority = 2 [ (cosmos_proto.scalar) = "cosmos.AddressString" ];
+}
+
+// MsgParamsResponse defines the Msg/Params response type.
+message MsgParamsResponse {}

x/feemarket/plugins/README.md

@@ -0,0 +1,9 @@
+# FeeMarket Plugins
+
+This directory contains implementations of the `FeeMarket` interface to be
+plugged into the `x/feemarket` module.
+
+Current implementations include:
+
+- [Mock:](mock/feemarket.go) fee market that can be used for basic testing.
+DO NOT use in production.

x/feemarket/plugins/mock/ante.go

@@ -0,0 +1 @@
+package mock

x/feemarket/plugins/mock/feemarket.go

@@ -10,8 +10,6 @@ import (
 
 var _ types.FeeMarketImplementation = &MockFeeMarket{}
 
-type MockFeeMarket struct{} //nolint
-
 // ValidateBasic is a no-op.
 func (fm *MockFeeMarket) ValidateBasic() error {
 	return nil