package pricefeed import ( "github.com/cosmos/cosmos-sdk/codec" abci "github.com/tendermint/tendermint/abci/types" sdk "github.com/cosmos/cosmos-sdk/types" ) // NewQuerier is the module level router for state queries func NewQuerier(keeper Keeper) sdk.Querier { return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err sdk.Error) { switch path[0] { case QueryCurrentPrice: return queryCurrentPrice(ctx, path[1:], req, keeper) case QueryRawPrices: return queryRawPrices(ctx, path[1:], req, keeper) case QueryAssets: return queryAssets(ctx, req, keeper) default: return nil, sdk.ErrUnknownRequest("unknown pricefeed query endpoint") } } } func queryCurrentPrice(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) { assetCode := path[0] _, found := keeper.GetAsset(ctx, assetCode) if !found { return []byte{}, sdk.ErrUnknownRequest("asset not found") } currentPrice := keeper.GetCurrentPrice(ctx, assetCode) bz, err2 := codec.MarshalJSONIndent(keeper.cdc, currentPrice) if err2 != nil { panic("could not marshal result to JSON") } return bz, nil } func queryRawPrices(ctx sdk.Context, path []string, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) { var priceList QueryRawPricesResp assetCode := path[0] _, found := keeper.GetAsset(ctx, assetCode) if !found { return []byte{}, sdk.ErrUnknownRequest("asset not found") } rawPrices := keeper.GetRawPrices(ctx, assetCode) for _, price := range rawPrices { priceList = append(priceList, price.String()) } bz, err2 := codec.MarshalJSONIndent(keeper.cdc, priceList) if err2 != nil { panic("could not marshal result to JSON") } return bz, nil } func queryAssets(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) (res []byte, err sdk.Error) { var assetList QueryAssetsResp assets := keeper.GetAssets(ctx) for _, asset := range assets { assetList = append(assetList, asset.String()) } bz, err2 := codec.MarshalJSONIndent(keeper.cdc, assetList) if err2 != nil { panic("could not marshal result to JSON") } return bz, nil }