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keeper.go
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keeper.go
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package keeper
import (
"fmt"
"github.com/tendermint/tendermint/libs/log"
"github.com/allinbits/cosmos-cash-poc/x/regulator/types"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
)
// UnmarshalFn is a generic function to unmarshal bytes
type UnmarshalFn func(value []byte) (interface{}, bool)
// Keeper of the issuer store
type Keeper struct {
storeKey sdk.StoreKey
cdc *codec.Codec
//permAddrs map[string]types.PermissionsForAddress
}
// NewKeeper creates a issuer keeper
func NewKeeper(cdc *codec.Codec, key sdk.StoreKey) Keeper {
keeper := Keeper{
storeKey: key,
cdc: cdc,
}
return keeper
}
// Logger returns a module-specific logger.
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{}) {
store := ctx.KVStore(k.storeKey)
store.Set(append(prefix, key...), k.cdc.MustMarshalBinaryBare(i))
}
// 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, unmarshal UnmarshalFn) (i []interface{}) {
store := ctx.KVStore(k.storeKey)
iterator := sdk.KVStorePrefixIterator(store, prefix)
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
value, _ := unmarshal(iterator.Value())
i = append(i, value)
}
return i
}