refactor: migrate consensus to collections

CHANGELOG.md

@@ -96,6 +96,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (baseapp) [#15023](https://github.com/cosmos/cosmos-sdk/pull/15023) & [#15213](https://github.com/cosmos/cosmos-sdk/pull/15213) Add `MessageRouter` interface to baseapp and pass it to authz, gov and groups instead of concrete type. 
 * (simtestutil) [#15305](https://github.com/cosmos/cosmos-sdk/pull/15305) Add `AppStateFnWithExtendedCb` with callback function to extend rawState.
 * (x/distribution) [#15462](https://github.com/cosmos/cosmos-sdk/pull/15462) Add delegator address to the event for withdrawing delegation rewards
+* (x/consensus) [#15553](https://github.com/cosmos/cosmos-sdk/pull/15553) Migrate consensus module to use collections
 
 ### State Machine Breaking
 

baseapp/abci.go

@@ -67,7 +67,7 @@ func (app *BaseApp) InitChain(req abci.RequestInitChain) (res abci.ResponseInitC
 	// done after the deliver state and context have been set as it's persisted
 	// to state.
 	if req.ConsensusParams != nil {
-		err := app.StoreConsensusParams(app.deliverState.ctx, req.ConsensusParams)
+		err := app.StoreConsensusParams(app.deliverState.ctx, *req.ConsensusParams)
 		if err != nil {
 			panic(err)
 		}
@@ -239,9 +239,8 @@ func (app *BaseApp) EndBlock(req abci.RequestEndBlock) (res abci.ResponseEndBloc
 		res.Events = sdk.MarkEventsToIndex(res.Events, app.indexEvents)
 	}
 
-	if cp := app.GetConsensusParams(app.deliverState.ctx); cp != nil {
-		res.ConsensusParamUpdates = cp
-	}
+	cp := app.GetConsensusParams(app.deliverState.ctx)
+	res.ConsensusParamUpdates = &cp
 
 	// call the streaming service hook with the EndBlock messages
 	for _, abciListener := range app.streamingManager.ABCIListeners {
@@ -880,7 +879,7 @@ func (app *BaseApp) GetBlockRetentionHeight(commitHeight int64) int64 {
 	// on the unbonding period and block commitment time as the two should be
 	// equivalent.
 	cp := app.GetConsensusParams(app.deliverState.ctx)
-	if cp != nil && cp.Evidence != nil && cp.Evidence.MaxAgeNumBlocks > 0 {
+	if cp.Evidence != nil && cp.Evidence.MaxAgeNumBlocks > 0 {
 		retentionHeight = commitHeight - cp.Evidence.MaxAgeNumBlocks
 	}
 

baseapp/baseapp.go

@@ -434,29 +434,25 @@ func (app *BaseApp) setState(mode runTxMode, header cmtproto.Header) {
 
 // GetConsensusParams returns the current consensus parameters from the BaseApp's
 // ParamStore. If the BaseApp has no ParamStore defined, nil is returned.
-func (app *BaseApp) GetConsensusParams(ctx sdk.Context) *cmtproto.ConsensusParams {
+func (app *BaseApp) GetConsensusParams(ctx sdk.Context) cmtproto.ConsensusParams {
 	if app.paramStore == nil {
-		return nil
+		return cmtproto.ConsensusParams{}
 	}
 
 	cp, err := app.paramStore.Get(ctx)
 	if err != nil {
-		panic(err)
+		panic(fmt.Errorf("consensus key is nil: %w", err))
 	}
 
 	return cp
 }
 
 // StoreConsensusParams sets the consensus parameters to the baseapp's param store.
-func (app *BaseApp) StoreConsensusParams(ctx sdk.Context, cp *cmtproto.ConsensusParams) error {
+func (app *BaseApp) StoreConsensusParams(ctx sdk.Context, cp cmtproto.ConsensusParams) error {
 	if app.paramStore == nil {
 		panic("cannot store consensus params with no params store set")
 	}
 
-	if cp == nil {
-		return nil
-	}
-
 	return app.paramStore.Set(ctx, cp)
 	// We're explicitly not storing the CometBFT app_version in the param store. It's
 	// stored instead in the x/upgrade store, with its own bump logic.
@@ -474,7 +470,7 @@ func (app *BaseApp) AddRunTxRecoveryHandler(handlers ...RecoveryHandler) {
 // one.
 func (app *BaseApp) GetMaximumBlockGas(ctx sdk.Context) uint64 {
 	cp := app.GetConsensusParams(ctx)
-	if cp == nil || cp.Block == nil {
+	if cp.Block == nil {
 		return 0
 	}
 

baseapp/baseapp_test.go

@@ -67,7 +67,7 @@ func NewBaseAppSuite(t *testing.T, opts ...func(*baseapp.BaseApp)) *BaseAppSuite
 	app.SetInterfaceRegistry(cdc.InterfaceRegistry())
 	app.MsgServiceRouter().SetInterfaceRegistry(cdc.InterfaceRegistry())
 	app.MountStores(capKey1, capKey2)
-	app.SetParamStore(&paramStore{db: dbm.NewMemDB()})
+	app.SetParamStore(paramStore{db: dbm.NewMemDB()})
 	app.SetTxDecoder(txConfig.TxDecoder())
 	app.SetTxEncoder(txConfig.TxEncoder())
 
@@ -587,16 +587,16 @@ func TestGetMaximumBlockGas(t *testing.T) {
 	suite.baseApp.InitChain(abci.RequestInitChain{})
 	ctx := suite.baseApp.NewContext(true, cmtproto.Header{})
 
-	suite.baseApp.StoreConsensusParams(ctx, &cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: 0}})
+	suite.baseApp.StoreConsensusParams(ctx, cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: 0}})
 	require.Equal(t, uint64(0), suite.baseApp.GetMaximumBlockGas(ctx))
 
-	suite.baseApp.StoreConsensusParams(ctx, &cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: -1}})
+	suite.baseApp.StoreConsensusParams(ctx, cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: -1}})
 	require.Equal(t, uint64(0), suite.baseApp.GetMaximumBlockGas(ctx))
 
-	suite.baseApp.StoreConsensusParams(ctx, &cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: 5000000}})
+	suite.baseApp.StoreConsensusParams(ctx, cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: 5000000}})
 	require.Equal(t, uint64(5000000), suite.baseApp.GetMaximumBlockGas(ctx))
 
-	suite.baseApp.StoreConsensusParams(ctx, &cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: -5000000}})
+	suite.baseApp.StoreConsensusParams(ctx, cmtproto.ConsensusParams{Block: &cmtproto.BlockParams{MaxGas: -5000000}})
 	require.Panics(t, func() { suite.baseApp.GetMaximumBlockGas(ctx) })
 }
 

baseapp/params.go

@@ -9,7 +9,7 @@ import (
 // ParamStore defines the interface the parameter store used by the BaseApp must
 // fulfill.
 type ParamStore interface {
-	Get(ctx context.Context) (*cmtproto.ConsensusParams, error)
+	Get(ctx context.Context) (cmtproto.ConsensusParams, error)
 	Has(ctx context.Context) (bool, error)
-	Set(ctx context.Context, cp *cmtproto.ConsensusParams) error
+	Set(ctx context.Context, cp cmtproto.ConsensusParams) error
 }

baseapp/params_legacy.go

@@ -138,10 +138,13 @@ func GetConsensusParams(ctx sdk.Context, paramStore LegacyParamStore) *cmtproto.
 	return cp
 }
 
-func MigrateParams(ctx sdk.Context, lps LegacyParamStore, ps ParamStore) {
+func MigrateParams(ctx sdk.Context, lps LegacyParamStore, ps ParamStore) error {
 	if cp := GetConsensusParams(ctx, lps); cp != nil {
-		ps.Set(ctx, cp)
+		if err := ps.Set(ctx, *cp); err != nil {
+			return err
+		}
 	} else {
 		ctx.Logger().Info("warning: consensus parameters are undefined; skipping migration")
 	}
+	return nil
 }

baseapp/utils_test.go

@@ -241,7 +241,7 @@ type paramStore struct {
 
 var _ baseapp.ParamStore = (*paramStore)(nil)
 
-func (ps *paramStore) Set(_ context.Context, value *cmtproto.ConsensusParams) error {
+func (ps paramStore) Set(_ context.Context, value cmtproto.ConsensusParams) error {
 	bz, err := json.Marshal(value)
 	if err != nil {
 		return err
@@ -250,26 +250,26 @@ func (ps *paramStore) Set(_ context.Context, value *cmtproto.ConsensusParams) er
 	return ps.db.Set(ParamStoreKey, bz)
 }
 
-func (ps *paramStore) Has(_ context.Context) (bool, error) {
+func (ps paramStore) Has(_ context.Context) (bool, error) {
 	return ps.db.Has(ParamStoreKey)
 }
 
-func (ps paramStore) Get(ctx context.Context) (*cmtproto.ConsensusParams, error) {
+func (ps paramStore) Get(_ context.Context) (cmtproto.ConsensusParams, error) {
 	bz, err := ps.db.Get(ParamStoreKey)
 	if err != nil {
-		return nil, err
+		return cmtproto.ConsensusParams{}, err
 	}
 
 	if len(bz) == 0 {
-		return nil, errors.New("params not found")
+		return cmtproto.ConsensusParams{}, errors.New("params not found")
 	}
 
 	var params cmtproto.ConsensusParams
 	if err := json.Unmarshal(bz, &params); err != nil {
-		return nil, err
+		return cmtproto.ConsensusParams{}, err
 	}
 
-	return &params, nil
+	return params, nil
 }
 
 func setTxSignature(t *testing.T, builder client.TxBuilder, nonce uint64) {

proto/cosmos/consensus/v1/query.proto

@@ -10,16 +10,16 @@ option go_package = "github.com/cosmos/cosmos-sdk/x/consensus/types";
 // Query defines the gRPC querier service.
 service Query {
   // Params queries the parameters of x/consensus_param module.
-  rpc Params(QueryParamsRequest) returns (QueryParamsResponse) {
+  rpc GetParams(QueryGetParamsRequest) returns (QueryGetParamsResponse) {
     option (google.api.http).get = "/cosmos/consensus/v1/params";
   }
 }
 
 // QueryParamsRequest defines the request type for querying x/consensus parameters.
-message QueryParamsRequest {}
+message QueryGetParamsRequest {}
 
 // QueryParamsResponse defines the response type for querying x/consensus parameters.
-message QueryParamsResponse {
+message QueryGetParamsResponse {
   // params are the tendermint consensus params stored in the consensus module.
   // Please note that `params.version` is not populated in this response, it is
   // tracked separately in the x/upgrade module.

server/export_test.go

@@ -101,7 +101,7 @@ func isZeroExportedApp(a types.ExportedApp) bool {
 	return a.AppState == nil &&
 		len(a.Validators) == 0 &&
 		a.Height == 0 &&
-		a.ConsensusParams == nil
+		a.ConsensusParams == cmtproto.ConsensusParams{}
 }
 
 // mockExporter provides an Export method matching server/types.AppExporter,
@@ -127,7 +127,7 @@ type mockExporter struct {
 // when e.Export is called.
 func (e *mockExporter) SetDefaultExportApp() {
 	e.ExportApp = types.ExportedApp{
-		ConsensusParams: &cmtproto.ConsensusParams{
+		ConsensusParams: cmtproto.ConsensusParams{
 			Block: &cmtproto.BlockParams{
 				MaxBytes: 5 * 1024 * 1024,
 				MaxGas:   -1,

server/mock/app_test.go

@@ -5,12 +5,11 @@ import (
 	"testing"
 	"time"
 
+	"cosmossdk.io/log"
 	abci "github.com/cometbft/cometbft/abci/types"
 	cmtproto "github.com/cometbft/cometbft/proto/tendermint/types"
 	"github.com/stretchr/testify/require"
 
-	"cosmossdk.io/log"
-
 	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
 	genutiltypes "github.com/cosmos/cosmos-sdk/x/genutil/types"
 )

server/types/app.go

@@ -73,7 +73,7 @@ type (
 		// Height is the app's latest block height.
 		Height int64
 		// ConsensusParams are the exported consensus params for ABCI.
-		ConsensusParams *cmtproto.ConsensusParams
+		ConsensusParams cmtproto.ConsensusParams
 	}
 
 	// AppExporter is a function that dumps all app state to

simapp/app.go

@@ -286,7 +286,7 @@ func NewSimApp(
 
 	// set the BaseApp's parameter store
 	app.ConsensusParamsKeeper = consensusparamkeeper.NewKeeper(appCodec, runtime.NewKVStoreService(keys[consensusparamtypes.StoreKey]), authtypes.NewModuleAddress(govtypes.ModuleName).String())
-	bApp.SetParamStore(&app.ConsensusParamsKeeper)
+	bApp.SetParamStore(app.ConsensusParamsKeeper.Params)
 
 	// add keepers
 	app.AccountKeeper = authkeeper.NewAccountKeeper(appCodec, runtime.NewKVStoreService(keys[authtypes.StoreKey]), authtypes.ProtoBaseAccount, maccPerms, sdk.Bech32MainPrefix, authtypes.NewModuleAddress(govtypes.ModuleName).String())