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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| package cli | ||
|
|
||
| import ( | ||
| "strconv" | ||
|
|
||
| "github.com/cosmos/cosmos-sdk/client" | ||
| "github.com/cosmos/cosmos-sdk/client/flags" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| "github.com/elys-network/elys/x/amm/types" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| var _ = strconv.Itoa(0) | ||
|
|
||
| func CmdSwapEstimationByDenom() *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "swap-estimation-by-denom [amount] [denom-in] [denom-out]", | ||
| Short: "Query swap-estimation-by-denom", | ||
| Example: "elysd q amm swap-estimation-by-denom 100uatom uatom uosmo", | ||
| Args: cobra.ExactArgs(3), | ||
| RunE: func(cmd *cobra.Command, args []string) (err error) { | ||
| reqAmount, err := sdk.ParseCoinNormalized(args[0]) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| reqDenomIn := args[1] | ||
| reqDenomOut := args[2] | ||
|
|
||
| clientCtx, err := client.GetClientQueryContext(cmd) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| queryClient := types.NewQueryClient(clientCtx) | ||
|
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| params := &types.QuerySwapEstimationByDenomRequest{ | ||
|
|
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| Amount: reqAmount, | ||
| DenomIn: reqDenomIn, | ||
| DenomOut: reqDenomOut, | ||
| } | ||
|
|
||
| res, err := queryClient.SwapEstimationByDenom(cmd.Context(), params) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return clientCtx.PrintProto(res) | ||
| }, | ||
| } | ||
|
|
||
| flags.AddQueryFlagsToCmd(cmd) | ||
|
|
||
| return cmd | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| package wasm | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
|
|
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| errorsmod "cosmossdk.io/errors" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ammtypes "github.com/elys-network/elys/x/amm/types" | ||
| ) | ||
|
|
||
| func (oq *Querier) querySwapEstimationByDenom(ctx sdk.Context, query *ammtypes.QuerySwapEstimationByDenomRequest) ([]byte, error) { | ||
| res, err := oq.keeper.SwapEstimationByDenom(sdk.WrapSDKContext(ctx), query) | ||
| if err != nil { | ||
| return nil, errorsmod.Wrap(err, "failed to get swap estimation by denom") | ||
| } | ||
|
|
||
| responseBytes, err := json.Marshal(res) | ||
| if err != nil { | ||
| return nil, errorsmod.Wrap(err, "failed to serialize swap estimation by denom response") | ||
| } | ||
| return responseBytes, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| package keeper | ||
|
|
||
| import ( | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| "github.com/elys-network/elys/x/amm/types" | ||
| ) | ||
|
|
||
| // CalcInRouteSpotPrice calculates the spot price of the given token and in route | ||
| func (k Keeper) CalcInRouteSpotPrice(ctx sdk.Context, tokenIn sdk.Coin, routes []*types.SwapAmountInRoute) (sdk.Dec, sdk.Coin, error) { | ||
| if routes == nil || len(routes) == 0 { | ||
| return sdk.ZeroDec(), sdk.Coin{}, types.ErrEmptyRoutes | ||
| } | ||
|
|
||
| // Start with the initial token input | ||
| tokensIn := sdk.Coins{tokenIn} | ||
|
|
||
| // The final token out denom | ||
| var tokenOutDenom string | ||
|
|
||
| for _, route := range routes { | ||
| poolId := route.PoolId | ||
| tokenOutDenom = route.TokenOutDenom | ||
|
|
||
| pool, found := k.GetPool(ctx, poolId) | ||
| if !found { | ||
| return sdk.ZeroDec(), sdk.Coin{}, types.ErrPoolNotFound | ||
| } | ||
|
|
||
| // Estimate swap | ||
| snapshot := k.GetPoolSnapshotOrSet(ctx, pool) | ||
| swapResult, err := k.CalcOutAmtGivenIn(ctx, pool.PoolId, k.oracleKeeper, &snapshot, tokensIn, tokenOutDenom, sdk.ZeroDec()) | ||
|
|
||
| if err != nil { | ||
| return sdk.ZeroDec(), sdk.Coin{}, err | ||
| } | ||
|
|
||
| if swapResult.IsZero() { | ||
| return sdk.ZeroDec(), sdk.Coin{}, types.ErrAmountTooLow | ||
| } | ||
|
|
||
| // Use the current swap result as the input for the next iteration | ||
| tokensIn = sdk.Coins{swapResult} | ||
| } | ||
|
|
||
| // Calculate the spot price given the initial token in and the final token out | ||
| spotPrice := sdk.NewDecFromInt(tokensIn[0].Amount).Quo(sdk.NewDecFromInt(tokenIn.Amount)) | ||
|
|
||
| // Calculate the token out amount | ||
| tokenOutAmt := sdk.NewDecFromInt(tokenIn.Amount).Mul(spotPrice) | ||
|
|
||
| // Construct the token out coin | ||
| tokenOut := sdk.NewCoin(tokenOutDenom, tokenOutAmt.TruncateInt()) | ||
|
|
||
| return spotPrice, tokenOut, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| package keeper_test | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| keepertest "github.com/elys-network/elys/testutil/keeper" | ||
| "github.com/elys-network/elys/x/amm/types" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestCalcInRouteSpotPrice(t *testing.T) { | ||
| k, ctx, accountedPoolKeeper, _ := keepertest.AmmKeeper(t) | ||
| SetupMockPools(k, ctx) | ||
|
|
||
| // Use token in for all tests | ||
| tokenIn := sdk.NewCoin("denom1", sdk.NewInt(100)) | ||
|
|
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| // Test single route | ||
| accountedPoolKeeper.On("GetAccountedBalance", ctx, uint64(1), "denom1").Return(sdk.NewInt(1000)) | ||
| accountedPoolKeeper.On("GetAccountedBalance", ctx, uint64(1), "denom2").Return(sdk.NewInt(1000)) | ||
| routes := []*types.SwapAmountInRoute{{PoolId: 1, TokenOutDenom: "denom2"}} | ||
| spotPrice, _, err := k.CalcInRouteSpotPrice(ctx, tokenIn, routes) | ||
| require.NoError(t, err) | ||
| require.NotZero(t, spotPrice) | ||
| accountedPoolKeeper.AssertExpectations(t) | ||
|
|
||
| // Test multiple routes | ||
| accountedPoolKeeper.On("GetAccountedBalance", ctx, uint64(2), "denom1").Return(sdk.NewInt(1000)) | ||
| accountedPoolKeeper.On("GetAccountedBalance", ctx, uint64(2), "baseCurrency").Return(sdk.NewInt(1000)) | ||
| accountedPoolKeeper.On("GetAccountedBalance", ctx, uint64(3), "baseCurrency").Return(sdk.NewInt(1000)) | ||
| accountedPoolKeeper.On("GetAccountedBalance", ctx, uint64(3), "denom3").Return(sdk.NewInt(1000)) | ||
| routes = []*types.SwapAmountInRoute{ | ||
| {PoolId: 2, TokenOutDenom: "baseCurrency"}, | ||
| {PoolId: 3, TokenOutDenom: "denom3"}, | ||
| } | ||
| spotPrice, _, err = k.CalcInRouteSpotPrice(ctx, tokenIn, routes) | ||
| require.NoError(t, err) | ||
| require.NotZero(t, spotPrice) | ||
| accountedPoolKeeper.AssertExpectations(t) | ||
|
|
||
| // Test no routes | ||
| _, _, err = k.CalcInRouteSpotPrice(ctx, tokenIn, nil) | ||
| require.Error(t, err) | ||
|
|
||
| // Test invalid pool | ||
| routes = []*types.SwapAmountInRoute{{PoolId: 9999, TokenOutDenom: "denom2"}} | ||
| _, _, err = k.CalcInRouteSpotPrice(ctx, tokenIn, routes) | ||
| require.Error(t, err) | ||
| } |
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