package keeper import ( "github.com/cosmos/cosmos-sdk/client" "github.com/cosmos/cosmos-sdk/codec" sdk "github.com/cosmos/cosmos-sdk/types" sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" supplyexported "github.com/cosmos/cosmos-sdk/x/supply/exported" abci "github.com/tendermint/tendermint/abci/types" "github.com/kava-labs/kava/x/hard/types" ) // NewQuerier is the module level router for state queries func NewQuerier(k Keeper) sdk.Querier { return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err error) { switch path[0] { case types.QueryGetParams: return queryGetParams(ctx, req, k) case types.QueryGetModuleAccounts: return queryGetModAccounts(ctx, req, k) case types.QueryGetDeposits: return queryGetDeposits(ctx, req, k) case types.QueryGetTotalDeposited: return queryGetTotalDeposited(ctx, req, k) case types.QueryGetBorrows: return queryGetBorrows(ctx, req, k) case types.QueryGetTotalBorrowed: return queryGetTotalBorrowed(ctx, req, k) case types.QueryGetInterestRate: return queryGetInterestRate(ctx, req, k) case types.QueryGetReserves: return queryGetReserves(ctx, req, k) default: return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unknown %s query endpoint", types.ModuleName) } } } func queryGetParams(ctx sdk.Context, _ abci.RequestQuery, k Keeper) ([]byte, error) { // Get params params := k.GetParams(ctx) // Encode results bz, err := codec.MarshalJSONIndent(k.cdc, params) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryGetModAccounts(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, error) { var params types.QueryAccountParams err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } var accs []supplyexported.ModuleAccountI if len(params.Name) > 0 { acc := k.supplyKeeper.GetModuleAccount(ctx, params.Name) accs = append(accs, acc) } else { acc := k.supplyKeeper.GetModuleAccount(ctx, types.ModuleAccountName) accs = append(accs, acc) } bz, err := codec.MarshalJSONIndent(k.cdc, accs) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryGetDeposits(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, error) { var params types.QueryDepositsParams err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } denom := len(params.Denom) > 0 owner := len(params.Owner) > 0 var deposits types.Deposits switch { case owner && denom: deposit, found := k.GetSyncedDeposit(ctx, params.Owner) if found { for _, coin := range deposit.Amount { if coin.Denom == params.Denom { deposits = append(deposits, deposit) } } } case owner: deposit, found := k.GetSyncedDeposit(ctx, params.Owner) if found { deposits = append(deposits, deposit) } case denom: k.IterateDeposits(ctx, func(deposit types.Deposit) (stop bool) { if deposit.Amount.AmountOf(params.Denom).IsPositive() { deposits = append(deposits, deposit) } return false }) default: k.IterateDeposits(ctx, func(deposit types.Deposit) (stop bool) { deposits = append(deposits, deposit) return false }) } var bz []byte // If owner param was specified then deposits array already contains the user's synced deposit if owner { bz, err = codec.MarshalJSONIndent(types.ModuleCdc, deposits) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } // Otherwise we need to simulate syncing of each deposit var syncedDeposits types.Deposits for _, deposit := range deposits { syncedDeposit, _ := k.GetSyncedDeposit(ctx, deposit.Depositor) syncedDeposits = append(syncedDeposits, syncedDeposit) } start, end := client.Paginate(len(syncedDeposits), params.Page, params.Limit, 100) if start < 0 || end < 0 { syncedDeposits = types.Deposits{} } else { syncedDeposits = syncedDeposits[start:end] } bz, err = codec.MarshalJSONIndent(types.ModuleCdc, syncedDeposits) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryGetBorrows(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, error) { var params types.QueryBorrowsParams err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } denom := len(params.Denom) > 0 owner := len(params.Owner) > 0 var borrows types.Borrows switch { case owner && denom: borrow, found := k.GetSyncedBorrow(ctx, params.Owner) if found { for _, coin := range borrow.Amount { if coin.Denom == params.Denom { borrows = append(borrows, borrow) } } } case owner: borrow, found := k.GetSyncedBorrow(ctx, params.Owner) if found { borrows = append(borrows, borrow) } case denom: k.IterateBorrows(ctx, func(borrow types.Borrow) (stop bool) { if borrow.Amount.AmountOf(params.Denom).IsPositive() { borrows = append(borrows, borrow) } return false }) default: k.IterateBorrows(ctx, func(borrow types.Borrow) (stop bool) { borrows = append(borrows, borrow) return false }) } var bz []byte // If owner param was specified then borrows array already contains the user's synced borrow if owner { bz, err = codec.MarshalJSONIndent(types.ModuleCdc, borrows) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } // Otherwise we need to simulate syncing of each borrow var syncedBorrows types.Borrows for _, borrow := range borrows { syncedBorrow, _ := k.GetSyncedBorrow(ctx, borrow.Borrower) syncedBorrows = append(syncedBorrows, syncedBorrow) } start, end := client.Paginate(len(syncedBorrows), params.Page, params.Limit, 100) if start < 0 || end < 0 { syncedBorrows = types.Borrows{} } else { syncedBorrows = syncedBorrows[start:end] } bz, err = codec.MarshalJSONIndent(types.ModuleCdc, syncedBorrows) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryGetTotalBorrowed(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, error) { var params types.QueryTotalBorrowedParams err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } borrowedCoins, found := k.GetBorrowedCoins(ctx) if !found { return nil, types.ErrBorrowedCoinsNotFound } // If user specified a denom only return coins of that denom type if len(params.Denom) > 0 { borrowedCoins = sdk.NewCoins(sdk.NewCoin(params.Denom, borrowedCoins.AmountOf(params.Denom))) } bz, err := codec.MarshalJSONIndent(types.ModuleCdc, borrowedCoins) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryGetTotalDeposited(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, error) { var params types.QueryTotalDepositedParams err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } suppliedCoins, found := k.GetSuppliedCoins(ctx) if !found { return nil, types.ErrSuppliedCoinsNotFound } // If user specified a denom only return coins of that denom type if len(params.Denom) > 0 { suppliedCoins = sdk.NewCoins(sdk.NewCoin(params.Denom, suppliedCoins.AmountOf(params.Denom))) } bz, err := codec.MarshalJSONIndent(types.ModuleCdc, suppliedCoins) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryGetInterestRate(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, error) { var params types.QueryInterestRateParams err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } var moneyMarketInterestRates types.MoneyMarketInterestRates var moneyMarkets types.MoneyMarkets if len(params.Denom) > 0 { moneyMarket, found := k.GetMoneyMarket(ctx, params.Denom) if !found { return nil, types.ErrMoneyMarketNotFound } moneyMarkets = append(moneyMarkets, moneyMarket) } else { moneyMarkets = k.GetAllMoneyMarkets(ctx) } // Calculate the borrow and supply APY interest rates for each money market for _, moneyMarket := range moneyMarkets { denom := moneyMarket.Denom cash := k.supplyKeeper.GetModuleAccount(ctx, types.ModuleName).GetCoins().AmountOf(denom) borrowed := sdk.NewCoin(denom, sdk.ZeroInt()) borrowedCoins, foundBorrowedCoins := k.GetBorrowedCoins(ctx) if foundBorrowedCoins { borrowed = sdk.NewCoin(denom, borrowedCoins.AmountOf(denom)) } reserves, foundReserves := k.GetTotalReserves(ctx) if !foundReserves { reserves = sdk.NewCoins() } // CalculateBorrowRate calculates the current interest rate based on utilization (the fraction of supply that has been borrowed) borrowAPY, err := CalculateBorrowRate(moneyMarket.InterestRateModel, sdk.NewDecFromInt(cash), sdk.NewDecFromInt(borrowed.Amount), sdk.NewDecFromInt(reserves.AmountOf(denom))) if err != nil { return nil, err } utilRatio := CalculateUtilizationRatio(sdk.NewDecFromInt(cash), sdk.NewDecFromInt(borrowed.Amount), sdk.NewDecFromInt(reserves.AmountOf(denom))) fullSupplyAPY := borrowAPY.Mul(utilRatio) realSupplyAPY := fullSupplyAPY.Mul(sdk.OneDec().Sub(moneyMarket.ReserveFactor)) moneyMarketInterestRate := types.MoneyMarketInterestRate{ Denom: denom, SupplyInterestRate: realSupplyAPY, BorrowInterestRate: borrowAPY, } moneyMarketInterestRates = append(moneyMarketInterestRates, moneyMarketInterestRate) } bz, err := codec.MarshalJSONIndent(types.ModuleCdc, moneyMarketInterestRates) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryGetReserves(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, error) { var params types.QueryReservesParams err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } reserveCoins, found := k.GetTotalReserves(ctx) if !found { reserveCoins = sdk.Coins{} } // If user specified a denom only return coins of that denom type if len(params.Denom) > 0 { reserveCoins = sdk.NewCoins(sdk.NewCoin(params.Denom, reserveCoins.AmountOf(params.Denom))) } bz, err := codec.MarshalJSONIndent(types.ModuleCdc, reserveCoins) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil }