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/
keeper.go
111 lines (91 loc) · 3.38 KB
/
keeper.go
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package keeper
import (
"fmt"
"github.com/evdatsion/tendermint/libs/log"
"github.com/evdatsion/cosmos-sdk/codec"
sdk "github.com/evdatsion/cosmos-sdk/types"
"github.com/evdatsion/cosmos-sdk/x/mint/internal/types"
"github.com/evdatsion/cosmos-sdk/x/params"
)
// Keeper of the mint store
type Keeper struct {
cdc *codec.Codec
storeKey sdk.StoreKey
paramSpace params.Subspace
sk types.StakingKeeper
supplyKeeper types.SupplyKeeper
feeCollectorName string
}
// NewKeeper creates a new mint Keeper instance
func NewKeeper(
cdc *codec.Codec, key sdk.StoreKey, paramSpace params.Subspace,
sk types.StakingKeeper, supplyKeeper types.SupplyKeeper, feeCollectorName string) Keeper {
// ensure mint module account is set
if addr := supplyKeeper.GetModuleAddress(types.ModuleName); addr == nil {
panic("the mint module account has not been set")
}
return Keeper{
cdc: cdc,
storeKey: key,
paramSpace: paramSpace.WithKeyTable(types.ParamKeyTable()),
sk: sk,
supplyKeeper: supplyKeeper,
feeCollectorName: feeCollectorName,
}
}
//______________________________________________________________________
// 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))
}
// get the minter
func (k Keeper) GetMinter(ctx sdk.Context) (minter types.Minter) {
store := ctx.KVStore(k.storeKey)
b := store.Get(types.MinterKey)
if b == nil {
panic("stored minter should not have been nil")
}
k.cdc.MustUnmarshalBinaryLengthPrefixed(b, &minter)
return
}
// set the minter
func (k Keeper) SetMinter(ctx sdk.Context, minter types.Minter) {
store := ctx.KVStore(k.storeKey)
b := k.cdc.MustMarshalBinaryLengthPrefixed(minter)
store.Set(types.MinterKey, b)
}
//______________________________________________________________________
// GetParams returns the total set of minting parameters.
func (k Keeper) GetParams(ctx sdk.Context) (params types.Params) {
k.paramSpace.GetParamSet(ctx, ¶ms)
return params
}
// SetParams sets the total set of minting parameters.
func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
k.paramSpace.SetParamSet(ctx, ¶ms)
}
//______________________________________________________________________
// StakingTokenSupply implements an alias call to the underlying staking keeper's
// StakingTokenSupply to be used in BeginBlocker.
func (k Keeper) StakingTokenSupply(ctx sdk.Context) sdk.Int {
return k.sk.StakingTokenSupply(ctx)
}
// BondedRatio implements an alias call to the underlying staking keeper's
// BondedRatio to be used in BeginBlocker.
func (k Keeper) BondedRatio(ctx sdk.Context) sdk.Dec {
return k.sk.BondedRatio(ctx)
}
// MintCoins implements an alias call to the underlying supply keeper's
// MintCoins to be used in BeginBlocker.
func (k Keeper) MintCoins(ctx sdk.Context, newCoins sdk.Coins) sdk.Error {
if newCoins.Empty() {
// skip as no coins need to be minted
return nil
}
return k.supplyKeeper.MintCoins(ctx, types.ModuleName, newCoins)
}
// AddCollectedFees implements an alias call to the underlying supply keeper's
// AddCollectedFees to be used in BeginBlocker.
func (k Keeper) AddCollectedFees(ctx sdk.Context, fees sdk.Coins) sdk.Error {
return k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, k.feeCollectorName, fees)
}