fix(x/bank): miss keypair of SendEnabled to restore legacy param set before migration

CHANGELOG.md

@@ -48,6 +48,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * (x/gov) [#17873](https://github.com/cosmos/cosmos-sdk/pull/17873) Fail any inactive and active proposals that cannot be decoded.
 * (x/slashing) [#18016](https://github.com/cosmos/cosmos-sdk/pull/18016) Fixed builder function for missed blocks key (`validatorMissedBlockBitArrayPrefixKey`) in slashing/migration/v4
+* (x/bank) [#18107](https://github.com/cosmos/cosmos-sdk/pull/18107) Add missing keypair of SendEnabled to restore legacy param set before migration.
 
 ### Client Breaking Changes
 

x/bank/exported/exported.go

@@ -21,5 +21,6 @@ type (
 	// NOTE: This is used solely for migration of x/params managed parameters.
 	Subspace interface {
 		GetParamSet(ctx sdk.Context, ps ParamSet)
+		Get(ctx sdk.Context, key []byte, ptr any)
 	}
 )

x/bank/keeper/keeper_test.go

@@ -2376,6 +2376,8 @@ func (ms mockSubspace) GetParamSet(ctx sdk.Context, ps exported.ParamSet) {
 	*ps.(*banktypes.Params) = ms.ps
 }
 
+func (ms mockSubspace) Get(ctx sdk.Context, key []byte, ptr interface{}) {}
+
 func (suite *KeeperTestSuite) TestMigrator_Migrate3to4() {
 	bankKeeper := suite.bankKeeper
 	ctx := sdk.UnwrapSDKContext(suite.ctx)

x/bank/keeper/migrations.go

@@ -6,6 +6,7 @@ import (
 	v2 "github.com/cosmos/cosmos-sdk/x/bank/migrations/v2"
 	v3 "github.com/cosmos/cosmos-sdk/x/bank/migrations/v3"
 	v4 "github.com/cosmos/cosmos-sdk/x/bank/migrations/v4"
+	"github.com/cosmos/cosmos-sdk/x/bank/types"
 )
 
 // Migrator is a struct for handling in-place store migrations.
@@ -31,5 +32,12 @@ func (m Migrator) Migrate2to3(ctx sdk.Context) error {
 
 // Migrate3to4 migrates x/bank storage from version 3 to 4.
 func (m Migrator) Migrate3to4(ctx sdk.Context) error {
+	m.MigrateSendEnabledParams(ctx)
 	return v4.MigrateStore(ctx, m.keeper.storeService, m.legacySubspace, m.keeper.cdc)
 }
+
+// MigrateSendEnabledParams get params from x/params and update the bank params.
+func (m Migrator) MigrateSendEnabledParams(ctx sdk.Context) {
+	sendEnabled := types.GetSendEnabledParams(ctx, m.legacySubspace)
+	m.keeper.SetAllSendEnabled(ctx, sendEnabled)
+}

x/bank/migrations/v4/gen_state_test.go

@@ -156,6 +156,6 @@
 			},
 		}
 		_ = v4.MigrateGenState(&origState)
-		assert.Len(t, origState.Params.SendEnabled, 2)
+		assert.Len(t, origState.Params.SendEnabled, 2) //nolint:staticcheck // SA1019: keep for test
 	})
 }

x/bank/migrations/v4/store.go

@@ -21,6 +21,9 @@ func MigrateStore(ctx sdk.Context, storeService store.KVStoreService, legacySubs
 	var currParams types.Params
 	legacySubspace.GetParamSet(ctx, &currParams)
 
+	// SendEnabled is migrated to the x/bank module store, so delete from the params
+	currParams = types.NewParams(currParams.DefaultSendEnabled)
+
 	if err := currParams.Validate(); err != nil {
 		return err
 	}

x/bank/migrations/v4/store_test.go

@@ -29,6 +29,8 @@ func (ms mockSubspace) GetParamSet(ctx sdk.Context, ps exported.ParamSet) {
 	*ps.(*types.Params) = ms.ps
 }
 
+func (ms mockSubspace) Get(ctx sdk.Context, key []byte, ptr interface{}) {}
+
 func TestMigrate(t *testing.T) {
 	encCfg := moduletestutil.MakeTestEncodingConfig(bank.AppModuleBasic{})
 	cdc := encCfg.Codec

x/bank/types/params_legacy.go

@@ -1,6 +1,12 @@
 package types
 
-import paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
+import (
+	fmt "fmt"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/bank/exported"
+	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
+)
 
 var (
 	// KeySendEnabled is store's key for SendEnabled Params
@@ -18,6 +24,44 @@ func ParamKeyTable() paramtypes.KeyTable {
 // Deprecated: ParamSetPairs implements params.ParamSet
 func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
 	return paramtypes.ParamSetPairs{
+		paramtypes.NewParamSetPair(KeySendEnabled, &p.SendEnabled, validateSendEnabledParams),
 		paramtypes.NewParamSetPair(KeyDefaultSendEnabled, &p.DefaultSendEnabled, validateIsBool),
 	}
 }
+
+// SendEnabledParams is a collection of parameters indicating if a coin denom is enabled for sending
+type SendEnabledParams []*SendEnabled
+
+// GetSendEnabledParams retrieves the send enabled parameters from the provided context and legacy subspace.
+func GetSendEnabledParams(ctx sdk.Context, legacySubspace exported.Subspace) []*SendEnabled {
+	var sendEnabled []*SendEnabled
+	legacySubspace.Get(ctx, KeySendEnabled, &sendEnabled)
+	return sendEnabled
+}
+
+func validateSendEnabledParams(i interface{}) error {
+	params, ok := i.([]*SendEnabled)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+	// ensure each denom is only registered one time.
+	registered := make(map[string]bool)
+	for _, p := range params {
+		if _, exists := registered[p.Denom]; exists {
+			return fmt.Errorf("duplicate send enabled parameter found: '%s'", p.Denom)
+		}
+		if err := validateSendEnabled(*p); err != nil {
+			return err
+		}
+		registered[p.Denom] = true
+	}
+	return nil
+}
+
+func validateSendEnabled(i interface{}) error {
+	param, ok := i.(SendEnabled)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+	return sdk.ValidateDenom(param.Denom)
+}