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twap_price.go
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twap_price.go
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package keeper
import (
"github.com/gogo/protobuf/proto"
gammtypes "github.com/osmosis-labs/osmosis/v13/x/gamm/types"
"github.com/osmosis-labs/osmosis/v13/x/superfluid/types"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
)
// This function calculates the osmo equivalent worth of an LP share.
// It is intended to eventually use the TWAP of the worth of an LP share
// once that is exposed from the gamm module.
func (k Keeper) calculateOsmoBackingPerShare(pool gammtypes.PoolI, osmoInPool sdk.Int) sdk.Dec {
twap := osmoInPool.ToDec().Quo(pool.GetTotalShares().ToDec())
return twap
}
func (k Keeper) SetOsmoEquivalentMultiplier(ctx sdk.Context, epoch int64, denom string, multiplier sdk.Dec) {
store := ctx.KVStore(k.storeKey)
prefixStore := prefix.NewStore(store, types.KeyPrefixTokenMultiplier)
priceRecord := types.OsmoEquivalentMultiplierRecord{
EpochNumber: epoch,
Denom: denom,
Multiplier: multiplier,
}
bz, err := proto.Marshal(&priceRecord)
if err != nil {
panic(err)
}
prefixStore.Set([]byte(denom), bz)
}
func (k Keeper) GetSuperfluidOSMOTokens(ctx sdk.Context, denom string, amount sdk.Int) sdk.Int {
multiplier := k.GetOsmoEquivalentMultiplier(ctx, denom)
if multiplier.IsZero() {
return sdk.ZeroInt()
}
decAmt := multiplier.Mul(amount.ToDec())
asset := k.GetSuperfluidAsset(ctx, denom)
return k.GetRiskAdjustedOsmoValue(ctx, asset, decAmt.RoundInt())
}
func (k Keeper) DeleteOsmoEquivalentMultiplier(ctx sdk.Context, denom string) {
store := ctx.KVStore(k.storeKey)
prefixStore := prefix.NewStore(store, types.KeyPrefixTokenMultiplier)
prefixStore.Delete([]byte(denom))
}
func (k Keeper) GetOsmoEquivalentMultiplier(ctx sdk.Context, denom string) sdk.Dec {
store := ctx.KVStore(k.storeKey)
prefixStore := prefix.NewStore(store, types.KeyPrefixTokenMultiplier)
bz := prefixStore.Get([]byte(denom))
if bz == nil {
return sdk.ZeroDec()
}
priceRecord := types.OsmoEquivalentMultiplierRecord{}
err := proto.Unmarshal(bz, &priceRecord)
if err != nil {
panic(err)
}
return priceRecord.Multiplier
}
func (k Keeper) GetAllOsmoEquivalentMultipliers(ctx sdk.Context) []types.OsmoEquivalentMultiplierRecord {
store := ctx.KVStore(k.storeKey)
prefixStore := prefix.NewStore(store, types.KeyPrefixTokenMultiplier)
iterator := prefixStore.Iterator(nil, nil)
defer iterator.Close()
priceRecords := []types.OsmoEquivalentMultiplierRecord{}
for ; iterator.Valid(); iterator.Next() {
priceRecord := types.OsmoEquivalentMultiplierRecord{}
err := proto.Unmarshal(iterator.Value(), &priceRecord)
if err != nil {
panic(err)
}
priceRecords = append(priceRecords, priceRecord)
}
return priceRecords
}