cosmos-sdk/x/params/keeper.go

58 lines
1.1 KiB
Go

package params
import (
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/params/store"
)
// Keeper of the global paramstore
type Keeper struct {
cdc *codec.Codec
key sdk.StoreKey
tkey sdk.StoreKey
stores map[string]*Store
}
// NewKeeper constructs a params keeper
func NewKeeper(cdc *codec.Codec, key *sdk.KVStoreKey, tkey *sdk.TransientStoreKey) (k Keeper) {
k = Keeper{
cdc: cdc,
key: key,
tkey: tkey,
stores: make(map[string]*Store),
}
return k
}
// Allocate substore used for keepers
func (k Keeper) Substore(storename string, table Table) Store {
_, ok := k.stores[storename]
if ok {
panic("substore already occupied")
}
if storename == "" {
panic("cannot use empty string for substore")
}
store := store.NewStore(k.cdc, k.key, k.tkey, storename, table)
k.stores[storename] = &store
return store
}
// Get existing substore from keeper
func (k Keeper) GetSubstore(storename string) (Store, bool) {
store, ok := k.stores[storename]
if !ok {
return Store{}, false
}
return *store, ok
}