fix env var prefix by using os.Getenv directly

frontend/components/AddExchangeSessionForm.js

@@ -71,7 +71,7 @@ export default function AddExchangeSessionForm({onBack, onAdded}) {
             key: apiKey,
             secret: apiSecret,
             margin: isMargin,
-            envVarPrefix: exchangeType.toUpperCase() + "_",
+            envVarPrefix: exchangeType.toUpperCase(),
             isolatedMargin: isIsolatedMargin,
             isolatedMarginSymbol: isolatedMarginSymbol,
         }

pkg/bbgo/config_test.go

@@ -81,11 +81,11 @@ func TestLoadConfig(t *testing.T) {
 					"sessions": map[string]interface{}{
 						"max": map[string]interface{}{
 							"exchange":     "max",
-							"envVarPrefix": "MAX_",
+							"envVarPrefix": "MAX",
 						},
 						"binance": map[string]interface{}{
 							"exchange":     "binance",
-							"envVarPrefix": "BINANCE_",
+							"envVarPrefix": "BINANCE",
 						},
 					},
 					"build": map[string]interface{}{

pkg/bbgo/testdata/strategy.yaml

@@ -2,10 +2,10 @@
 sessions:
   max:
     exchange: max
-    envVarPrefix: MAX_
+    envVarPrefix: MAX
   binance:
     exchange: binance
-    envVarPrefix: BINANCE_
+    envVarPrefix: BINANCE
 
 exchangeStrategies:
 - on: ["binance"]

pkg/cmd/cmdutil/exchange.go

@@ -2,9 +2,10 @@ package cmdutil
 
 import (
 	"fmt"
+	"os"
+	"strings"
 
 	"github.com/pkg/errors"
-	"github.com/spf13/viper"
 
 	"github.com/c9s/bbgo/pkg/exchange/binance"
 	"github.com/c9s/bbgo/pkg/exchange/max"
@@ -35,10 +36,12 @@ func NewExchangeWithEnvVarPrefix(n types.ExchangeName, varPrefix string) (types.
 		varPrefix = n.String()
 	}
 
-	key := viper.GetString(varPrefix + "-api-key")
-	secret := viper.GetString(varPrefix + "-api-secret")
+	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, errors.New("max: empty key or secret")
+		return nil, fmt.Errorf("%s: empty key or secret, env var prefix: %s", n, varPrefix)
 	}
 
 	return NewExchangeStandard(n, key, secret)

pkg/server/routes.go

@@ -12,6 +12,7 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/gin-contrib/cors"
@@ -551,6 +552,21 @@ func (s *Server) setupRestart(c *gin.Context) {
 
 		logrus.Info("web server shutdown completed")
 
+
+		bin := os.Args[0]
+		args := os.Args[0:]
+
+		// filter out setup parameters
+		args = filterStrings(args, "--setup")
+
+		envVars := os.Environ()
+
+		logrus.Infof("%s %v %+v", bin, args, envVars)
+
+		if err := syscall.Exec(bin, args, envVars) ; err != nil {
+			logrus.WithError(err).Errorf("failed to restart %s", bin)
+		}
+
 		s.Setup.Cancel()
 	}()
 
@@ -673,12 +689,12 @@ func collectSessionEnvVars(sessions map[string]*bbgo.ExchangeSession) (envVars m
 		}
 
 		if len(session.EnvVarPrefix) > 0 {
-			envVars[session.EnvVarPrefix+"API_KEY"] = session.Key
-			envVars[session.EnvVarPrefix+"API_SECRET"] = session.Secret
+			envVars[session.EnvVarPrefix+"_API_KEY"] = session.Key
+			envVars[session.EnvVarPrefix+"_API_SECRET"] = session.Secret
 		} else if len(session.Name) > 0 {
 			sn := strings.ToUpper(session.Name)
-			envVars[sn+"API_KEY"] = session.Key
-			envVars[sn+"API_SECRET"] = session.Secret
+			envVars[sn+"_API_KEY"] = session.Key
+			envVars[sn+"_API_SECRET"] = session.Secret
 		} else {
 			err = fmt.Errorf("session %s name or env var prefix is not defined", session.Name)
 			return
@@ -745,3 +761,17 @@ func pingAndOpenURL(ctx context.Context, baseURL string) {
 		}
 	})
 }
+
+func filterStrings(slice []string, needle string) (ns []string) {
+	for _, str := range slice {
+		if str == needle {
+			continue
+		}
+
+		ns = append(ns, str)
+	}
+
+	return ns
+}
+
+