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queries.go
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queries.go
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package wasm
import (
wasmvmtypes "github.com/CosmWasm/wasmvm/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
wasmbindings "github.com/MonOsmosis/osmosis/v10/app/wasm/bindings"
gammkeeper "github.com/MonOsmosis/osmosis/v10/x/gamm/keeper"
gammtypes "github.com/MonOsmosis/osmosis/v10/x/gamm/types"
)
type QueryPlugin struct {
gammKeeper *gammkeeper.Keeper
}
// NewQueryPlugin constructor
func NewQueryPlugin(
gammK *gammkeeper.Keeper,
) *QueryPlugin {
return &QueryPlugin{
gammKeeper: gammK,
}
}
func (qp QueryPlugin) GetPoolState(ctx sdk.Context, poolID uint64) (*wasmbindings.PoolAssets, error) {
poolData, err := qp.gammKeeper.GetPoolAndPoke(ctx, poolID)
if err != nil {
return nil, sdkerrors.Wrap(err, "gamm get pool")
}
var poolAssets wasmbindings.PoolAssets
poolAssets.Assets = poolData.GetTotalPoolLiquidity(ctx)
poolAssets.Shares = sdk.Coin{
Denom: gammtypes.GetPoolShareDenom(poolID),
Amount: poolData.GetTotalShares(),
}
return &poolAssets, nil
}
func (qp QueryPlugin) GetSpotPrice(ctx sdk.Context, spotPrice *wasmbindings.SpotPrice) (*sdk.Dec, error) {
if spotPrice == nil {
return nil, wasmvmtypes.InvalidRequest{Err: "gamm spot price null"}
}
poolId := spotPrice.Swap.PoolId
denomIn := spotPrice.Swap.DenomIn
denomOut := spotPrice.Swap.DenomOut
withSwapFee := spotPrice.WithSwapFee
price, err := qp.gammKeeper.CalculateSpotPrice(ctx, poolId, denomIn, denomOut)
if err != nil {
return nil, sdkerrors.Wrap(err, "gamm get spot price")
}
if withSwapFee {
poolData, err := qp.gammKeeper.GetPoolAndPoke(ctx, poolId)
if err != nil {
return nil, sdkerrors.Wrap(err, "gamm get pool")
}
price = price.Mul(sdk.OneDec().Sub(poolData.GetSwapFee(ctx)))
}
return &price, nil
}
func (qp QueryPlugin) EstimateSwap(ctx sdk.Context, estimateSwap *wasmbindings.EstimateSwap) (*wasmbindings.SwapAmount, error) {
if estimateSwap == nil {
return nil, wasmvmtypes.InvalidRequest{Err: "gamm estimate swap null"}
}
if err := sdk.ValidateDenom(estimateSwap.First.DenomIn); err != nil {
return nil, sdkerrors.Wrap(err, "gamm estimate swap denom in")
}
if err := sdk.ValidateDenom(estimateSwap.First.DenomOut); err != nil {
return nil, sdkerrors.Wrap(err, "gamm estimate swap denom out")
}
senderAddr, err := sdk.AccAddressFromBech32(estimateSwap.Sender)
if err != nil {
return nil, sdkerrors.Wrap(err, "gamm estimate swap sender address")
}
if estimateSwap.Amount == (wasmbindings.SwapAmount{}) {
return nil, wasmvmtypes.InvalidRequest{Err: "gamm estimate swap empty swap"}
}
estimate, err := PerformSwap(qp.gammKeeper, ctx, senderAddr, estimateSwap.ToSwapMsg())
return estimate, err
}