refactor: refactor relay part (#957)

* refactor: refactor relay part

* refactor: refactor config part

middleware/distributor.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"one-api/common"
+	"one-api/common/logger"
 	"one-api/model"
 	"strconv"
 	"strings"
@@ -69,7 +70,7 @@ func Distribute() func(c *gin.Context) {
 			if err != nil {
 				message := fmt.Sprintf("当前分组 %s 下对于模型 %s 无可用渠道", userGroup, modelRequest.Model)
 				if channel != nil {
-					common.SysError(fmt.Sprintf("渠道不存在：%d", channel.Id))
+					logger.SysError(fmt.Sprintf("渠道不存在：%d", channel.Id))
 					message = "数据库一致性已被破坏，请联系管理员"
 				}
 				abortWithMessage(c, http.StatusServiceUnavailable, message)