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store.go
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store.go
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package v4
import (
"github.com/cosmos/cosmos-sdk/codec"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/bank/exported"
"github.com/cosmos/cosmos-sdk/x/bank/types"
)
const ModuleName = "bank"
var ParamsKey = []byte{0x05}
// MigrateStore migrates the x/bank module state from the consensus version 3 to
// version 4. Specifically, it takes the parameters that are currently stored
// and managed by the x/params module and stores them directly into the x/bank
// module state.
func MigrateStore(ctx sdk.Context, storeKey storetypes.StoreKey, legacySubspace exported.Subspace, cdc codec.BinaryCodec) error {
store := ctx.KVStore(storeKey)
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
}
bz, err := cdc.Marshal(&currParams)
if err != nil {
return err
}
store.Set(ParamsKey, bz)
return nil
}