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factory.go
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factory.go
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package exchange
import (
"fmt"
"os"
"strings"
"github.com/c9s/bbgo/pkg/exchange/binance"
"github.com/c9s/bbgo/pkg/exchange/ftx"
"github.com/c9s/bbgo/pkg/exchange/kucoin"
"github.com/c9s/bbgo/pkg/exchange/max"
"github.com/c9s/bbgo/pkg/exchange/okex"
"github.com/c9s/bbgo/pkg/types"
)
func NewPublic(exchangeName types.ExchangeName) (types.Exchange, error) {
return NewStandard(exchangeName, "", "", "", "")
}
func NewStandard(n types.ExchangeName, key, secret, passphrase, subAccount string) (types.Exchange, error) {
switch n {
case types.ExchangeFTX:
return ftx.NewExchange(key, secret, subAccount), nil
case types.ExchangeBinance:
return binance.New(key, secret), nil
case types.ExchangeMax:
return max.New(key, secret), nil
case types.ExchangeOKEx:
return okex.New(key, secret, passphrase), nil
case types.ExchangeKucoin:
return kucoin.New(key, secret, passphrase), nil
default:
return nil, fmt.Errorf("unsupported exchange: %v", n)
}
}
func NewWithEnvVarPrefix(n types.ExchangeName, varPrefix string) (types.Exchange, error) {
if len(varPrefix) == 0 {
varPrefix = n.String()
}
varPrefix = strings.ToUpper(varPrefix)
key := os.Getenv(varPrefix + "_API_KEY")
secret := os.Getenv(varPrefix + "_API_SECRET")
if len(key) == 0 || len(secret) == 0 {
return nil, fmt.Errorf("can not initialize exchange %s: empty key or secret, env var prefix: %s", n, varPrefix)
}
passphrase := os.Getenv(varPrefix + "_API_PASSPHRASE")
subAccount := os.Getenv(varPrefix + "_SUBACCOUNT")
return NewStandard(n, key, secret, passphrase, subAccount)
}
// New constructor exchange object from viper config.
func New(n types.ExchangeName) (types.Exchange, error) {
return NewWithEnvVarPrefix(n, "")
}