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okx.go
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okx.go
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package okx
import (
"encoding/json"
"errors"
"net/http"
"github.com/jinxprotocol/v4-chain/protocol/daemons/pricefeed/client/price_function"
"github.com/jinxprotocol/v4-chain/protocol/daemons/pricefeed/types"
)
// OkxResponseBody defines the overall Okx response.
type OkxResponseBody struct {
Code string `json:"code" validate:"required"`
Tickers []OkxTicker `json:"data" validate:"required"`
}
// OkxTicker is our representation of ticker information returned in Okx response.
// OkxTicker implements interface `Ticker` in util.go.
type OkxTicker struct {
Pair string `json:"instId" validate:"required"`
AskPrice string `json:"askPx" validate:"required,positive-float-string"`
BidPrice string `json:"bidPx" validate:"required,positive-float-string"`
LastPrice string `json:"last" validate:"required,positive-float-string"`
}
// Ensure that OkxTicker implements the Ticker interface at compile time.
var _ price_function.Ticker = (*OkxTicker)(nil)
func (t OkxTicker) GetPair() string {
return t.Pair
}
func (t OkxTicker) GetAskPrice() string {
return t.AskPrice
}
func (t OkxTicker) GetBidPrice() string {
return t.BidPrice
}
func (t OkxTicker) GetLastPrice() string {
return t.LastPrice
}
// OkxPriceFunction transforms an API response from Okx into a map of tickers
// to prices that have been shifted by a market specific exponent.
func OkxPriceFunction(
response *http.Response,
marketPriceExponent map[string]int32,
resolver types.Resolver,
) (tickerToPrice map[string]uint64, unavailableTickers map[string]error, err error) {
// Unmarshal response body.
var okxResponseBody OkxResponseBody
err = json.NewDecoder(response.Body).Decode(&okxResponseBody)
if err != nil {
return nil, nil, err
}
if okxResponseBody.Code != "0" {
return nil, nil, errors.New(`okx response code is not "0"`)
}
return price_function.GetMedianPricesFromTickers(
okxResponseBody.Tickers,
marketPriceExponent,
resolver,
)
}