package keeper import ( 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/bep3/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 error) { switch path[0] { case types.QueryGetAssetSupply: return queryAssetSupply(ctx, req, keeper) case types.QueryGetAssetSupplies: return queryAssetSupplies(ctx, req, keeper) case types.QueryGetAtomicSwap: return queryAtomicSwap(ctx, req, keeper) case types.QueryGetAtomicSwaps: return queryAtomicSwaps(ctx, req, keeper) case types.QueryGetParams: return queryGetParams(ctx, req, keeper) default: return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unknown %s query endpoint", types.ModuleName) } } } func queryAssetSupply(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) { // Decode request var requestParams types.QueryAssetSupply err := types.ModuleCdc.UnmarshalJSON(req.Data, &requestParams) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } assetSupply, found := keeper.GetAssetSupply(ctx, []byte(requestParams.Denom)) if !found { return nil, sdkerrors.Wrap(types.ErrAssetSupplyNotFound, string(requestParams.Denom)) } // Encode results bz, err := codec.MarshalJSONIndent(types.ModuleCdc, assetSupply) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryAssetSupplies(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) (res []byte, err error) { assets := keeper.GetAllAssetSupplies(ctx) if assets == nil { assets = types.AssetSupplies{} } bz, err := codec.MarshalJSONIndent(types.ModuleCdc, assets) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryAtomicSwap(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) { // Decode request var requestParams types.QueryAtomicSwapByID err := types.ModuleCdc.UnmarshalJSON(req.Data, &requestParams) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } // Lookup atomic swap atomicSwap, found := keeper.GetAtomicSwap(ctx, requestParams.SwapID) if !found { return nil, sdkerrors.Wrapf(types.ErrAtomicSwapNotFound, "%d", requestParams.SwapID) } augmentedAtomicSwap := types.NewAugmentedAtomicSwap(atomicSwap) // Encode results bz, err := codec.MarshalJSONIndent(types.ModuleCdc, augmentedAtomicSwap) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } func queryAtomicSwaps(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) { var params types.QueryAtomicSwaps err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONUnmarshal, err.Error()) } unfilteredSwaps := keeper.GetAllAtomicSwaps(ctx) swaps := filterAtomicSwaps(ctx, unfilteredSwaps, params) if swaps == nil { swaps = types.AtomicSwaps{} } augmentedSwaps := types.AugmentedAtomicSwaps{} for _, swap := range swaps { augmentedSwaps = append(augmentedSwaps, types.NewAugmentedAtomicSwap(swap)) } bz, err := codec.MarshalJSONIndent(types.ModuleCdc, augmentedSwaps) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } // query params in the bep3 store func queryGetParams(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, error) { // Get params params := keeper.GetParams(ctx) // Encode results bz, err := codec.MarshalJSONIndent(types.ModuleCdc, params) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error()) } return bz, nil } // filterAtomicSwaps retrieves atomic swaps filtered by a given set of params. // If no filters are provided, all atomic swaps will be returned in paginated form. func filterAtomicSwaps(ctx sdk.Context, swaps types.AtomicSwaps, params types.QueryAtomicSwaps) types.AtomicSwaps { filteredSwaps := make(types.AtomicSwaps, 0, len(swaps)) for _, s := range swaps { matchInvolve, matchExpiration, matchStatus, matchDirection := true, true, true, true // match involved address (if supplied) if len(params.Involve) > 0 { matchInvolve = s.Sender.Equals(params.Involve) || s.Recipient.Equals(params.Involve) } // match expiration block limit (if supplied) if params.Expiration > 0 { matchExpiration = s.ExpireHeight <= params.Expiration } // match status (if supplied/valid) if params.Status.IsValid() { matchStatus = s.Status == params.Status } // match direction (if supplied/valid) if params.Direction.IsValid() { matchDirection = s.Direction == params.Direction } if matchInvolve && matchExpiration && matchStatus && matchDirection { filteredSwaps = append(filteredSwaps, s) } } start, end := client.Paginate(len(filteredSwaps), params.Page, params.Limit, 100) if start < 0 || end < 0 { filteredSwaps = types.AtomicSwaps{} } else { filteredSwaps = filteredSwaps[start:end] } return filteredSwaps }