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keeper.go
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keeper.go
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package keeper
import (
"crypto/sha256"
"fmt"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
"github.com/tendermint/tendermint/libs/log"
"github.com/axelarnetwork/axelar-core/utils"
"github.com/axelarnetwork/axelar-core/utils/key"
"github.com/axelarnetwork/axelar-core/x/reward/exported"
"github.com/axelarnetwork/axelar-core/x/reward/types"
"github.com/axelarnetwork/utils/funcs"
)
var (
poolNamePrefix = "pool"
pendingRefundPrefix = "refund"
)
var _ types.Rewarder = Keeper{}
// Keeper provides access to all state changes regarding the reward module
type Keeper struct {
storeKey sdk.StoreKey
cdc codec.BinaryCodec
paramSpace paramtypes.Subspace
banker types.Banker
distributor types.Distributor
staker types.Staker
}
// NewKeeper returns a new reward keeper
func NewKeeper(cdc codec.BinaryCodec, storeKey sdk.StoreKey, paramSpace paramtypes.Subspace, banker types.Banker, distributor types.Distributor, staker types.Staker) Keeper {
return Keeper{
cdc: cdc,
storeKey: storeKey,
paramSpace: paramSpace.WithKeyTable(types.KeyTable()),
banker: banker,
distributor: distributor,
staker: staker,
}
}
// 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))
}
// GetParams returns the total set of reward parameters.
func (k Keeper) GetParams(ctx sdk.Context) (params types.Params) {
k.paramSpace.GetParamSet(ctx, ¶ms)
return params
}
// SetParams sets the total set of reward parameters.
func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
k.paramSpace.SetParamSet(ctx, ¶ms)
}
// GetPool returns the reward pool of the given name, or returns an empty reward pool if not found
func (k Keeper) GetPool(ctx sdk.Context, name string) exported.RewardPool {
var pool types.Pool
ok := k.getStore(ctx).GetNew(key.FromStr(poolNamePrefix).Append(key.FromStr(name)), &pool)
if !ok {
return newPool(ctx, k, k.banker, k.distributor, k.staker, types.NewPool(name))
}
return newPool(ctx, k, k.banker, k.distributor, k.staker, pool)
}
func (k Keeper) getPools(ctx sdk.Context) []types.Pool {
var pools []types.Pool
store := k.getStore(ctx)
iter := store.Iterator(utils.LowerCaseKey(poolNamePrefix))
defer utils.CloseLogError(iter, k.Logger(ctx))
for ; iter.Valid(); iter.Next() {
var pool types.Pool
iter.UnmarshalValue(&pool)
pools = append(pools, pool)
}
return pools
}
func (k Keeper) setPool(ctx sdk.Context, pool types.Pool) {
funcs.MustNoErr(k.getStore(ctx).SetNewValidated(key.FromStr(poolNamePrefix).Append(key.FromStr(pool.Name)), &pool))
}
func (k Keeper) getStore(ctx sdk.Context) utils.KVStore {
return utils.NewNormalizedStore(ctx.KVStore(k.storeKey), k.cdc)
}
// SetPendingRefund saves pending refundable message
func (k Keeper) SetPendingRefund(ctx sdk.Context, req types.RefundMsgRequest, refund types.Refund) error {
hash := sha256.Sum256(k.cdc.MustMarshalLengthPrefixed(&req))
return k.getStore(ctx).SetNewValidated(key.FromStr(pendingRefundPrefix).Append(key.FromBz(hash[:])), &refund)
}
// GetPendingRefund retrieves a pending refundable message
func (k Keeper) GetPendingRefund(ctx sdk.Context, req types.RefundMsgRequest) (types.Refund, bool) {
var refund types.Refund
hash := sha256.Sum256(k.cdc.MustMarshalLengthPrefixed(&req))
ok := k.getStore(ctx).GetNew(key.FromStr(pendingRefundPrefix).Append(key.FromBz(hash[:])), &refund)
return refund, ok
}
// DeletePendingRefund retrieves a pending refundable message
func (k Keeper) DeletePendingRefund(ctx sdk.Context, req types.RefundMsgRequest) {
hash := sha256.Sum256(k.cdc.MustMarshalLengthPrefixed(&req))
k.getStore(ctx).DeleteNew(key.FromStr(pendingRefundPrefix).Append(key.FromBz(hash[:])))
}