0g-chain/x/swap/client/rest/query.go
Nick DeLuca 20437a91fb
Add E2E Swap Support (#959)
* add message types for swaps

* add tx client commands

* add test coverage for swap message deadlines

* start handler swap tests, export handler result message event into
private method, add stubbed keeper methods

* add initial swap implementation to get handler tests passing; adds event
specific for trades

* add handler acceptance test for slippage in exact input and exact output
swaps

* implement slippage limit for swap keeper methods

* add tests to ensure a user can only swap spendable coins

* test pool not found, panic on invalid pool, and panic when module
account does not have enough funds

* validate that the exact output when using for exact swaps is less than
the pool liquidity

* nit: long line

* add validation that swap output is greater than zero

* add rest txs for swap messages

* nit: lints

* dry up swap keeper methods

* from pr feedback - spelling and increase clairty around the output
amount of a swap rounding to zero
2021-07-13 17:44:05 -05:00

150 lines
4.2 KiB
Go

package rest
import (
"fmt"
"net/http"
"strings"
"github.com/gorilla/mux"
"github.com/cosmos/cosmos-sdk/client/context"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/rest"
"github.com/kava-labs/kava/x/swap/types"
)
func registerQueryRoutes(cliCtx context.CLIContext, r *mux.Router) {
r.HandleFunc(fmt.Sprintf("/%s/parameters", types.ModuleName), queryParamsHandlerFn(cliCtx)).Methods("GET")
r.HandleFunc(fmt.Sprintf("/%s/deposits", types.ModuleName), queryDepositsHandlerFn(cliCtx)).Methods("GET")
r.HandleFunc(fmt.Sprintf("/%s/pool", types.ModuleName), queryPoolHandlerFn(cliCtx)).Methods("GET")
r.HandleFunc(fmt.Sprintf("/%s/pools", types.ModuleName), queryPoolsHandlerFn(cliCtx)).Methods("GET")
}
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)
}
}
func queryDepositsHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
if !ok {
return
}
var owner sdk.AccAddress
var pool string
_, page, limit, err := rest.ParseHTTPArgsWithLimit(r, 0)
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
return
}
if x := r.URL.Query().Get(RestPool); len(x) != 0 {
pool = strings.TrimSpace(x)
}
if x := r.URL.Query().Get(RestOwner); len(x) != 0 {
ownerStr := strings.ToLower(strings.TrimSpace(x))
shareOwner, err := sdk.AccAddressFromBech32(ownerStr)
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, fmt.Sprintf("cannot parse address from owner %s", ownerStr))
return
}
owner = shareOwner
}
params := types.NewQueryDepositsParams(page, limit, owner, pool)
bz, err := cliCtx.Codec.MarshalJSON(params)
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
return
}
route := fmt.Sprintf("custom/%s/%s", types.ModuleName, types.QueryGetDeposits)
res, height, err := cliCtx.QueryWithData(route, bz)
cliCtx = cliCtx.WithHeight(height)
if err != nil {
rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
return
}
rest.PostProcessResponse(w, cliCtx, res)
}
}
func queryPoolHandlerFn(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
}
var poolName string
if x := r.URL.Query().Get(RestPool); len(x) != 0 {
poolName = strings.TrimSpace(x)
}
if len(poolName) == 0 {
rest.WriteErrorResponse(w, http.StatusBadRequest, "must specify pool param")
return
}
params := types.NewQueryPoolParams(poolName)
bz, err := cliCtx.Codec.MarshalJSON(params)
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
return
}
route := fmt.Sprintf("custom/%s/%s", types.ModuleName, types.QueryGetPool)
res, height, err := cliCtx.QueryWithData(route, bz)
cliCtx = cliCtx.WithHeight(height)
if err != nil {
rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
return
}
rest.PostProcessResponse(w, cliCtx, res)
}
}
func queryPoolsHandlerFn(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.QuerierRoute, types.QueryGetPools)
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)
}
}