0g-chain/x/bep3/client/rest/query.go
2020-04-30 10:13:31 -04:00

165 lines
4.8 KiB
Go

package rest
import (
"fmt"
"net/http"
"github.com/gorilla/mux"
"github.com/cosmos/cosmos-sdk/client/context"
"github.com/cosmos/cosmos-sdk/types/rest"
"github.com/kava-labs/kava/x/bep3/types"
)
const restSwapID = "swap-id"
const restDenom = "denom"
func registerQueryRoutes(cliCtx context.CLIContext, 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/parameters", types.ModuleName), queryParamsHandlerFn(cliCtx)).Methods("GET")
}
func queryAtomicSwapHandlerFn(cliCtx context.CLIContext) 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 := types.HexToBytes(vars[restSwapID])
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
return
}
bz, err := cliCtx.Codec.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.AtomicSwap
err = cliCtx.Codec.UnmarshalJSON(res, &swap)
if err != nil {
rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
return
}
rest.PostProcessResponse(w, cliCtx, cliCtx.Codec.MustMarshalJSON(swap))
}
}
func queryAtomicSwapsHandlerFn(cliCtx context.CLIContext) 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.QueryGetAtomicSwaps)
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 swaps types.AtomicSwaps
err = cliCtx.Codec.UnmarshalJSON(res, &swaps)
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
sliceSwaps := types.AtomicSwaps{}
for _, s := range swaps {
sliceSwaps = append(sliceSwaps, s)
}
rest.PostProcessResponse(w, cliCtx, cliCtx.Codec.MustMarshalJSON(sliceSwaps))
}
}
func queryAssetSupplyHandlerFn(cliCtx context.CLIContext) 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 := []byte(vars[restDenom])
params := types.NewQueryAssetSupply(denom)
bz, err := cliCtx.Codec.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.Codec.MustMarshalJSON(assetSupply))
}
}
func queryParamsHandlerFn(cliCtx context.CLIContext) 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)
}
}