/
keeper.go
94 lines (81 loc) · 2.05 KB
/
keeper.go
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package keeper
import (
"fmt"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
bank "github.com/cosmos/cosmos-sdk/x/bank/keeper"
"github.com/tendermint/tendermint/libs/log"
"github.com/allinbits/cosmos-cash/v2/x/issuer/types"
)
// UnmarshalFn is a generic function to unmarshal bytes
type UnmarshalFn func(value []byte) (interface{}, bool)
// MarshalFn is a generic function to marshal interfaces
type MarshalFn func(value interface{}) []byte
type Keeper struct {
cdc codec.Codec
storeKey sdk.StoreKey
memKey sdk.StoreKey
// TODO: update to be the mint keeper from SDK
bk bank.Keeper
didKeeper types.DidKeeper
vcKeeper types.VcKeeper
}
func NewKeeper(
cdc codec.Codec,
storeKey,
memKey sdk.StoreKey,
// TODO: update to be the mint keeper from SDK
bk bank.Keeper,
didKeeper types.DidKeeper,
vcKeeper types.VcKeeper,
) *Keeper {
return &Keeper{
cdc: cdc,
storeKey: storeKey,
memKey: memKey,
bk: bk,
didKeeper: didKeeper,
vcKeeper: vcKeeper,
}
}
func (k Keeper) Logger(ctx sdk.Context) log.Logger {
return ctx.Logger().With("module", fmt.Sprintf("x/%s", types.ModuleName))
}
// Set sets a value in the db with a prefixed key
func (k Keeper) Set(ctx sdk.Context,
key []byte,
prefix []byte,
i interface{},
marshal MarshalFn,
) {
store := ctx.KVStore(k.storeKey)
store.Set(append(prefix, key...), marshal(i))
}
// Delete Deletes a value form the store
func (k Keeper) Delete(
ctx sdk.Context,
key []byte,
prefix []byte,
) {
store := ctx.KVStore(k.storeKey)
store.Delete(append(prefix, key...))
}
// Get gets an item from the store by bytes
func (k Keeper) Get(
ctx sdk.Context,
key []byte,
prefix []byte,
unmarshal UnmarshalFn,
) (i interface{}, found bool) {
store := ctx.KVStore(k.storeKey)
value := store.Get(append(prefix, key...))
return unmarshal(value)
}
// GetAll values from with a prefix from the store
func (k Keeper) GetAll(
ctx sdk.Context,
prefix []byte,
) sdk.Iterator {
store := ctx.KVStore(k.storeKey)
return sdk.KVStorePrefixIterator(store, prefix)
}