package rest import ( "encoding/hex" "fmt" "net/http" "strconv" "github.com/cosmos/cosmos-sdk/client" sdk "github.com/cosmos/cosmos-sdk/types" "github.com/cosmos/cosmos-sdk/types/rest" "github.com/gorilla/mux" "github.com/kava-labs/kava/x/bep3/types" ) const restSwapID = "swap-id" const restDenom = "denom" func registerQueryRoutes(cliCtx client.Context, r *mux.Router) { r.HandleFunc(fmt.Sprintf("/%s/swap/{%s}", types.ModuleName, restSwapID), queryAtomicSwapHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/swaps", types.ModuleName), queryAtomicSwapsHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/supply/{%s}", types.ModuleName, restDenom), queryAssetSupplyHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/supplies", types.ModuleName), queryAssetSuppliesHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/parameters", types.ModuleName), queryParamsHandlerFn(cliCtx)).Methods("GET") } func queryAtomicSwapHandlerFn(cliCtx client.Context) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { // Parse the query height cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } // Prepare params for querier vars := mux.Vars(r) if len(vars[restSwapID]) == 0 { err := fmt.Errorf("%s required but not specified", restSwapID) rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } swapID, err := hex.DecodeString(vars[restSwapID]) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } bz, err := cliCtx.LegacyAmino.MarshalJSON(types.QueryAtomicSwapByID{SwapID: swapID}) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } // Query res, height, err := cliCtx.QueryWithData(fmt.Sprintf("/custom/%s/%s", types.ModuleName, types.QueryGetAtomicSwap), bz) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } // Decode and return results cliCtx = cliCtx.WithHeight(height) var swap types.LegacyAugmentedAtomicSwap err = cliCtx.LegacyAmino.UnmarshalJSON(res, &swap) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } rest.PostProcessResponse(w, cliCtx, cliCtx.LegacyAmino.MustMarshalJSON(swap)) } } // HTTP request handler to query list of atomic swaps filtered by optional params func queryAtomicSwapsHandlerFn(cliCtx client.Context) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { _, page, limit, err := rest.ParseHTTPArgsWithLimit(r, 0) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } var ( involveAddr sdk.AccAddress expiration uint64 swapStatus types.SwapStatus swapDirection types.SwapDirection ) if x := r.URL.Query().Get(RestInvolve); len(x) != 0 { involveAddr, err = sdk.AccAddressFromBech32(x) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } } if x := r.URL.Query().Get(RestExpiration); len(x) != 0 { expiration, err = strconv.ParseUint(x, 10, 64) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } } if x := r.URL.Query().Get(RestStatus); len(x) != 0 { swapStatus = types.NewSwapStatusFromString(x) if !swapStatus.IsValid() { rest.WriteErrorResponse(w, http.StatusBadRequest, fmt.Sprintf("invalid swap status %s", swapStatus)) return } } if x := r.URL.Query().Get(RestDirection); len(x) != 0 { swapDirection = types.NewSwapDirectionFromString(x) if !swapDirection.IsValid() { rest.WriteErrorResponse(w, http.StatusBadRequest, fmt.Sprintf("invalid swap direction %s", swapDirection)) return } } params := types.NewQueryAtomicSwaps(page, limit, involveAddr, expiration, swapStatus, swapDirection) bz, err := cliCtx.LegacyAmino.MarshalJSON(params) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } route := fmt.Sprintf("custom/%s/%s", types.QuerierRoute, types.QueryGetAtomicSwaps) res, height, err := cliCtx.QueryWithData(route, bz) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } cliCtx = cliCtx.WithHeight(height) rest.PostProcessResponse(w, cliCtx, res) } } func queryAssetSupplyHandlerFn(cliCtx client.Context) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { // Parse the query height cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } // Prepare params for querier vars := mux.Vars(r) denom := vars[restDenom] params := types.NewQueryAssetSupply(denom) bz, err := cliCtx.LegacyAmino.MarshalJSON(params) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } // Query res, height, err := cliCtx.QueryWithData(fmt.Sprintf("/custom/%s/%s", types.ModuleName, types.QueryGetAssetSupply), bz) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } // Decode and return results cliCtx = cliCtx.WithHeight(height) var assetSupply types.AssetSupply err = cliCtx.Codec.UnmarshalJSON(res, &assetSupply) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } rest.PostProcessResponse(w, cliCtx, cliCtx.LegacyAmino.MustMarshalJSON(assetSupply)) } } func queryAssetSuppliesHandlerFn(cliCtx client.Context) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { // Parse the query height cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } route := fmt.Sprintf("custom/%s/%s", types.ModuleName, types.QueryGetAssetSupplies) res, height, err := cliCtx.QueryWithData(route, nil) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } // Decode and return results cliCtx = cliCtx.WithHeight(height) var supplies []types.AssetSupply err = cliCtx.LegacyAmino.UnmarshalJSON(res, &supplies) if err != nil { rest.WriteErrorResponse(w, http.StatusNotFound, err.Error()) return } // using empty slice so json returns [] instead of null when there's no swaps sliceSupplies := []types.AssetSupply{} sliceSupplies = append(sliceSupplies, supplies...) rest.PostProcessResponse(w, cliCtx, cliCtx.LegacyAmino.MustMarshalJSON(sliceSupplies)) } } func queryParamsHandlerFn(cliCtx client.Context) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } route := fmt.Sprintf("custom/%s/%s", types.QuerierRoute, types.QueryGetParams) res, height, err := cliCtx.QueryWithData(route, nil) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } cliCtx = cliCtx.WithHeight(height) rest.PostProcessResponse(w, cliCtx, res) } }