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query.go
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query.go
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package rest
import (
"fmt"
"net/http"
"github.com/cosmos/cosmos-sdk/client"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/types/rest"
"github.com/gorilla/mux"
"github.com/axelarnetwork/axelar-core/utils"
"github.com/axelarnetwork/axelar-core/x/evm/keeper"
"github.com/axelarnetwork/axelar-core/x/evm/types"
)
// query parameters
const (
QueryParamKeyRole = "key_role"
QueryParamKeyID = "key_id"
QueryParamSymbol = keeper.BySymbol
QueryParamAsset = keeper.ByAsset
)
// GetHandlerQueryTokenAddress returns a handler to query an EVM chain address
func GetHandlerQueryTokenAddress(cliCtx client.Context) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
if !ok {
return
}
chain := mux.Vars(r)[utils.PathVarChain]
symbol := r.URL.Query().Get(QueryParamSymbol)
asset := r.URL.Query().Get(QueryParamAsset)
var bz []byte
var err error
switch {
case symbol != "" && asset == "":
bz, _, err = cliCtx.Query(fmt.Sprintf("custom/%s/%s/%s/%s", types.QuerierRoute, keeper.QTokenAddressBySymbol, chain, symbol))
case symbol == "" && asset != "":
bz, _, err = cliCtx.Query(fmt.Sprintf("custom/%s/%s/%s/%s", types.QuerierRoute, keeper.QTokenAddressByAsset, chain, asset))
default:
rest.WriteErrorResponse(w, http.StatusBadRequest, "lookup must be either by asset name or symbol")
return
}
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, sdkerrors.Wrap(err, types.ErrFTokenAddress).Error())
return
}
var res types.QueryTokenAddressResponse
types.ModuleCdc.MustUnmarshalLengthPrefixed(bz, &res)
rest.PostProcessResponse(w, cliCtx, res)
}
}