fix: add base account getter (cosmos#12154)

CHANGELOG.md

@@ -60,6 +60,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (cli) [#12095](https://github.com/cosmos/cosmos-sdk/pull/12095) Fix running a tx with --dry-run returns an error
 * (x/auth) [#12108](https://github.com/cosmos/cosmos-sdk/pull/12108) Fix GetBlockWithTxs error when querying block with 0 tx
 * (genutil) [#12140](https://github.com/cosmos/cosmos-sdk/pull/12140) Fix staking's genesis JSON migrate in the `simd migrate v0.46` CLI command.
+* (types) [#12154](https://github.com/cosmos/cosmos-sdk/pull/12154) Add `baseAccountGetter` to avoid invalid account error when create vesting account.
 
 ## [v0.46.0-rc1](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.46.0-rc1) - 2022-05-23
 

x/auth/vesting/msg_server.go

@@ -19,6 +19,10 @@ type msgServer struct {
 	types.BankKeeper
 }
 
+type baseAccountGetter interface {
+	GetBaseAccount() *authtypes.BaseAccount
+}
+
 // NewMsgServerImpl returns an implementation of the vesting MsgServer interface,
 // wrapping the corresponding AccountKeeper and BankKeeper.
 func NewMsgServerImpl(k keeper.AccountKeeper, bk types.BankKeeper) types.MsgServer {
@@ -53,12 +57,18 @@ func (s msgServer) CreateVestingAccount(goCtx context.Context, msg *types.MsgCre
 		return nil, sdkerrors.Wrapf(sdkerrors.ErrInvalidRequest, "account %s already exists", msg.ToAddress)
 	}
 
-	baseAccount := ak.NewAccountWithAddress(ctx, to)
-	if _, ok := baseAccount.(*authtypes.BaseAccount); !ok {
+	account := ak.NewAccountWithAddress(ctx, to)
+	baseAccount, ok := account.(*authtypes.BaseAccount)
+	if !ok {
+		if getter, ok := account.(baseAccountGetter); ok {
+			baseAccount = getter.GetBaseAccount()
+		}
+	}
+	if baseAccount == nil {
 		return nil, sdkerrors.Wrapf(sdkerrors.ErrInvalidRequest, "invalid account type; expected: BaseAccount, got: %T", baseAccount)
 	}
 
-	baseVestingAccount := types.NewBaseVestingAccount(baseAccount.(*authtypes.BaseAccount), msg.Amount.Sort(), msg.EndTime)
+	baseVestingAccount := types.NewBaseVestingAccount(baseAccount, msg.Amount.Sort(), msg.EndTime)
 
 	var acc authtypes.AccountI