package keeper import ( "fmt" abci "github.com/tendermint/tendermint/abci/types" "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" "github.com/kava-labs/kava/x/auction/types" ) // NewQuerier is the module level router for state queries func NewQuerier(keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) sdk.Querier { return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err error) { switch path[0] { case types.QueryGetAuction: return queryAuction(ctx, req, keeper, legacyQuerierCdc) case types.QueryGetAuctions: return queryAuctions(ctx, req, keeper, legacyQuerierCdc) case types.QueryGetParams: return queryGetParams(ctx, req, keeper, legacyQuerierCdc) case types.QueryNextAuctionID: return queryNextAuctionID(ctx, req, keeper, legacyQuerierCdc) default: return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unknown %s query endpoint", types.ModuleName) } } } // query params in the auction store func queryGetParams(ctx sdk.Context, req abci.RequestQuery, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) ([]byte, error) { // Get params params := keeper.GetParams(ctx) // Encode results bz, err := codec.MarshalJSONIndent(legacyQuerierCdc, params) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryAuction(ctx sdk.Context, req abci.RequestQuery, k Keeper, legacyQuerierCdc *codec.LegacyAmino) ([]byte, error) { var params types.QueryAuctionParams err := legacyQuerierCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } auction, ok := k.GetAuction(ctx, params.AuctionID) if !ok { return nil, sdkerrors.Wrap(types.ErrAuctionNotFound, fmt.Sprintf("%d", params.AuctionID)) } bz, err := codec.MarshalJSONIndent(legacyQuerierCdc, auction) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryAuctions(ctx sdk.Context, req abci.RequestQuery, k Keeper, legacyQuerierCdc *codec.LegacyAmino) ([]byte, error) { var params types.QueryAllAuctionParams err := legacyQuerierCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } unfilteredAuctions := k.GetAllAuctions(ctx) auctions := filterAuctions(ctx, unfilteredAuctions, params, legacyQuerierCdc) if auctions == nil { auctions = []types.Auction{} } res, err := codec.MarshalJSONIndent(legacyQuerierCdc, auctions) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return res, nil } func queryNextAuctionID(ctx sdk.Context, req abci.RequestQuery, keeper Keeper, legacyQuerierCdc *codec.LegacyAmino) ([]byte, error) { nextAuctionID, _ := keeper.GetNextAuctionID(ctx) bz, err := legacyQuerierCdc.MarshalJSON(nextAuctionID) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } return bz, nil } // filterAuctions retrieves auctions filtered by a given set of params. // If no filters are provided, all auctions will be returned in paginated form. func filterAuctions(ctx sdk.Context, auctions []types.Auction, params types.QueryAllAuctionParams, legacyQuerierCdc *codec.LegacyAmino) []types.Auction { filteredAuctions := make([]types.Auction, 0, len(auctions)) for _, auc := range auctions { isMatch := auctionIsMatch(auc, params) if isMatch { filteredAuctions = append(filteredAuctions, auc) } } start, end := client.Paginate(len(filteredAuctions), params.Page, params.Limit, 100) if start < 0 || end < 0 { filteredAuctions = []types.Auction{} } else { filteredAuctions = filteredAuctions[start:end] } return filteredAuctions } func auctionIsMatch(auc types.Auction, params types.QueryAllAuctionParams) bool { matchType, matchOwner, matchDenom, matchPhase := true, true, true, true // match auction type (if supplied) if len(params.Type) > 0 { matchType = auc.GetType() == params.Type } // match auction owner (if supplied) if len(params.Owner) > 0 { if cAuc, ok := auc.(*types.CollateralAuction); ok { foundOwnerAddr := false for _, addr := range cAuc.GetLotReturns().Addresses { if addr.Equals(params.Owner) { foundOwnerAddr = true break } } if !foundOwnerAddr { matchOwner = false } } } // match auction denom (if supplied) if len(params.Denom) > 0 { matchDenom = auc.GetBid().Denom == params.Denom || auc.GetLot().Denom == params.Denom } // match auction phase (if supplied) if len(params.Phase) > 0 { matchPhase = auc.GetPhase() == params.Phase } if matchType && matchOwner && matchDenom && matchPhase { return true } return false }