feat: add payment module params (#893)

Adds `minSquareSize` and `maxSquareSize` as params to the payment
module.
Defines relevant stores and queries

Relevant changes in 
`proto/payment/*`
`x/payment/keeper*`
`x/payment/types/*`

- [x] closes #183 

Note: The constants that currently define min/max square size have not
been deprecated, will do so in another PR

app/app.go

@@ -367,6 +367,9 @@ func New(
 
 	app.BlobKeeper = *blobmodulekeeper.NewKeeper(
 		appCodec,
+		keys[blobmoduletypes.StoreKey],
+		keys[blobmoduletypes.MemStoreKey],
+		app.GetSubspace(blobmoduletypes.ModuleName),
 	)
 	blobmod := blobmodule.NewAppModule(appCodec, app.BlobKeeper)
 

go.mod

@@ -32,6 +32,7 @@ require (
 	github.com/regen-network/cosmos-proto v0.3.1
 	github.com/tendermint/tendermint v0.34.20
 	golang.org/x/exp v0.0.0-20221012211006-4de253d81b95
+	gopkg.in/yaml.v2 v2.4.0
 )
 
 require (
@@ -173,7 +174,6 @@ require (
 	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/ini.v1 v1.66.6 // indirect
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	nhooyr.io/websocket v1.8.6 // indirect
 	sigs.k8s.io/yaml v1.3.0 // indirect

proto/blob/genesis.proto

@@ -1,7 +1,12 @@
 syntax = "proto3";
 package blob;
 
+import "gogoproto/gogo.proto";
+import "blob/params.proto";
+
 option go_package = "github.com/celestiaorg/celestia-app/x/blob/types";
 
 // GenesisState defines the capability module's genesis state.
-message GenesisState {}
+message GenesisState {
+  Params params = 1 [(gogoproto.nullable) = false];
+}

proto/blob/params.proto

@@ -0,0 +1,14 @@
+syntax = "proto3";
+package blob;
+
+import "gogoproto/gogo.proto";
+
+option go_package = "github.com/celestiaorg/celestia-app/x/blob/types";
+
+// Params defines the parameters for the module.
+message Params {
+  option (gogoproto.goproto_stringer) = false;
+
+  uint32 min_square_size = 1 [(gogoproto.moretags) = "yaml:\"min_square_size\""];
+  uint32 max_square_size = 2 [(gogoproto.moretags) = "yaml:\"max_square_size\""];
+}

proto/blob/query.proto

@@ -1,10 +1,25 @@
 syntax = "proto3";
 package blob;
 
+import "gogoproto/gogo.proto";
 import "google/api/annotations.proto";
 import "cosmos/base/query/v1beta1/pagination.proto";
+import "blob/params.proto";
 
 option go_package = "github.com/celestiaorg/celestia-app/x/blob/types";
 
-// Query defines the gRPC querier service.
-service Query {}
+// Query defines the gRPC query service.
+service Query {
+  // Params queries the parameters of the module.
+  rpc Params(QueryParamsRequest) returns (QueryParamsResponse) {
+    option (google.api.http).get = "/blob/params";
+  }
+}
+
+// QueryParamsRequest is the request type for the Query/Params RPC method.
+message QueryParamsRequest {}
+
+// QueryParamsResponse is the response type for the Query/Params RPC method.
+message QueryParamsResponse {
+  Params params = 1 [(gogoproto.nullable) = false];
+}

testutil/keeper/blob.go

@@ -0,0 +1,53 @@
+package keeper
+
+import (
+	"testing"
+
+	"github.com/celestiaorg/celestia-app/testutil"
+	"github.com/celestiaorg/celestia-app/x/blob/keeper"
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+	"github.com/cosmos/cosmos-sdk/codec"
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
+	"github.com/cosmos/cosmos-sdk/store"
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	typesparams "github.com/cosmos/cosmos-sdk/x/params/types"
+	"github.com/stretchr/testify/require"
+	"github.com/tendermint/tendermint/libs/log"
+	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
+	tmdb "github.com/tendermint/tm-db"
+)
+
+func BlobKeeper(t testing.TB) (*keeper.Keeper, sdk.Context) {
+	storeKey := sdk.NewKVStoreKey(types.StoreKey)
+	memStoreKey := storetypes.NewMemoryStoreKey(types.MemStoreKey)
+
+	db := tmdb.NewMemDB()
+	stateStore := store.NewCommitMultiStore(db)
+	stateStore.MountStoreWithDB(storeKey, storetypes.StoreTypeIAVL, db)
+	stateStore.MountStoreWithDB(memStoreKey, storetypes.StoreTypeMemory, nil)
+	require.NoError(t, stateStore.LoadLatestVersion())
+
+	registry := codectypes.NewInterfaceRegistry()
+	cdc := codec.NewProtoCodec(registry)
+
+	paramsSubspace := typesparams.NewSubspace(cdc,
+		testutil.MakeTestCodec(),
+		storeKey,
+		memStoreKey,
+		"Blob",
+	)
+	k := keeper.NewKeeper(
+		cdc,
+		storeKey,
+		memStoreKey,
+		paramsSubspace,
+	)
+
+	ctx := sdk.NewContext(stateStore, tmproto.Header{}, false, log.NewNopLogger())
+
+	// Initialize params
+	k.SetParams(ctx, types.DefaultParams())
+
+	return k, ctx
+}

x/blob/client/cli/query.go

@@ -19,5 +19,7 @@ func GetQueryCmd(queryRoute string) *cobra.Command {
 		RunE:                       client.ValidateCmd,
 	}
 
+	cmd.AddCommand(CmdQueryParams())
+
 	return cmd
 }

x/blob/client/cli/query_params.go

@@ -0,0 +1,34 @@
+package cli
+
+import (
+	"context"
+
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/spf13/cobra"
+)
+
+func CmdQueryParams() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "params",
+		Short: "shows the parameters of the module",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx := client.GetClientContextFromCmd(cmd)
+
+			queryClient := types.NewQueryClient(clientCtx)
+
+			res, err := queryClient.Params(context.Background(), &types.QueryParamsRequest{})
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+
+	return cmd
+}

x/blob/genesis.go

@@ -9,11 +9,12 @@ import (
 // InitGenesis initializes the capability module's state from a provided genesis
 // state.
 func InitGenesis(ctx sdk.Context, k keeper.Keeper, genState types.GenesisState) {
+	k.SetParams(ctx, genState.Params)
 }
 
 // ExportGenesis returns the capability module's exported genesis.
 func ExportGenesis(ctx sdk.Context, k keeper.Keeper) *types.GenesisState {
 	genesis := types.DefaultGenesis()
-
+	genesis.Params = k.GetParams(ctx)
 	return genesis
 }

x/blob/genesis_test.go

@@ -0,0 +1,22 @@
+package blob_test
+
+import (
+	"testing"
+
+	keepertest "github.com/celestiaorg/celestia-app/testutil/keeper"
+	"github.com/celestiaorg/celestia-app/x/blob"
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGenesis(t *testing.T) {
+	genesisState := types.GenesisState{
+		Params: types.DefaultParams(),
+	}
+
+	k, ctx := keepertest.BlobKeeper(t)
+	blob.InitGenesis(ctx, *k, genesisState)
+	got := blob.ExportGenesis(ctx, *k)
+	require.NotNil(t, got)
+	require.Equal(t, types.DefaultParams(), got.Params)
+}

x/blob/keeper/grpc_query.go

@@ -0,0 +1,7 @@
+package keeper
+
+import (
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+)
+
+var _ types.QueryServer = Keeper{}

x/blob/keeper/grpc_query_params.go

@@ -0,0 +1,19 @@
+package keeper
+
+import (
+	"context"
+
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func (k Keeper) Params(c context.Context, req *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
+	if req == nil {
+		return nil, status.Error(codes.InvalidArgument, "invalid request")
+	}
+	ctx := sdk.UnwrapSDKContext(c)
+
+	return &types.QueryParamsResponse{Params: k.GetParams(ctx)}, nil
+}

x/blob/keeper/grpc_query_params_test.go

@@ -0,0 +1,21 @@
+package keeper_test
+
+import (
+	"testing"
+
+	testkeeper "github.com/celestiaorg/celestia-app/testutil/keeper"
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/stretchr/testify/require"
+)
+
+func TestParamsQuery(t *testing.T) {
+	keeper, ctx := testkeeper.BlobKeeper(t)
+	wctx := sdk.WrapSDKContext(ctx)
+	params := types.DefaultParams()
+	keeper.SetParams(ctx, params)
+
+	response, err := keeper.Params(wctx, &types.QueryParamsRequest{})
+	require.NoError(t, err)
+	require.Equal(t, &types.QueryParamsResponse{Params: params}, response)
+}

x/blob/keeper/keeper.go

@@ -10,7 +10,9 @@ import (
 	"github.com/celestiaorg/celestia-app/pkg/shares"
 	"github.com/celestiaorg/celestia-app/x/blob/types"
 	"github.com/cosmos/cosmos-sdk/codec"
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
 )
 
 const (
@@ -24,12 +26,27 @@ const (
 
 // Keeper handles all the state changes for the blob module.
 type Keeper struct {
-	cdc codec.BinaryCodec
+	cdc        codec.BinaryCodec
+	storeKey   storetypes.StoreKey
+	memKey     storetypes.StoreKey
+	paramStore paramtypes.Subspace
 }
 
-func NewKeeper(cdc codec.BinaryCodec) *Keeper {
+func NewKeeper(
+	cdc codec.BinaryCodec,
+	storeKey,
+	memKey storetypes.StoreKey,
+	ps paramtypes.Subspace,
+) *Keeper {
+	if !ps.HasKeyTable() {
+		ps = ps.WithKeyTable(types.ParamKeyTable())
+	}
+
 	return &Keeper{
-		cdc: cdc,
+		cdc:        cdc,
+		storeKey:   storeKey,
+		memKey:     memKey,
+		paramStore: ps,
 	}
 }
 

x/blob/keeper/params.go

@@ -0,0 +1,31 @@
+package keeper
+
+import (
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// GetParams gets all parameters as types.Params
+func (k Keeper) GetParams(ctx sdk.Context) types.Params {
+	return types.NewParams(
+		k.MinSquareSize(ctx),
+		k.MaxSquareSize(ctx),
+	)
+}
+
+// SetParams sets the params
+func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
+	k.paramStore.SetParamSet(ctx, &params)
+}
+
+// MinSquareSize returns the MinSquareSize param
+func (k Keeper) MinSquareSize(ctx sdk.Context) (res uint32) {
+	k.paramStore.Get(ctx, types.KeyMinSquareSize, &res)
+	return
+}
+
+// MaxSquareSize returns the MaxSquareSize param
+func (k Keeper) MaxSquareSize(ctx sdk.Context) (res uint32) {
+	k.paramStore.Get(ctx, types.KeyMaxSquareSize, &res)
+	return
+}

x/blob/keeper/params_test.go

@@ -0,0 +1,20 @@
+package keeper_test
+
+import (
+	"testing"
+
+	testkeeper "github.com/celestiaorg/celestia-app/testutil/keeper"
+	"github.com/celestiaorg/celestia-app/x/blob/types"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetParams(t *testing.T) {
+	k, ctx := testkeeper.BlobKeeper(t)
+	params := types.DefaultParams()
+
+	k.SetParams(ctx, params)
+
+	require.EqualValues(t, params, k.GetParams(ctx))
+	require.EqualValues(t, params.MinSquareSize, k.MinSquareSize(ctx))
+	require.EqualValues(t, params.MaxSquareSize, k.MaxSquareSize(ctx))
+}

x/blob/types/genesis.go

@@ -5,11 +5,13 @@ const DefaultIndex uint64 = 1
 
 // DefaultGenesis returns the default Capability genesis state
 func DefaultGenesis() *GenesisState {
-	return &GenesisState{}
+	return &GenesisState{
+		Params: DefaultParams(),
+	}
 }
 
 // Validate performs basic genesis state validation returning an error upon any
 // failure.
 func (gs GenesisState) Validate() error {
-	return nil
+	return gs.Params.Validate()
 }