new-api/relay/websocket.go

package relay

import (
	"fmt"
	"one-api/dto"
	relaycommon "one-api/relay/common"
	"one-api/relay/helper"
	"one-api/service"
	"one-api/types"

	"github.com/gin-gonic/gin"
	"github.com/gorilla/websocket"
)

func WssHelper(c *gin.Context, ws *websocket.Conn) (newAPIError *types.NewAPIError) {
	relayInfo := relaycommon.GenRelayInfoWs(c, ws)

	err := helper.ModelMappedHelper(c, relayInfo, nil)
	if err != nil {
		return types.NewError(err, types.ErrorCodeChannelModelMappedError, types.ErrOptionWithSkipRetry())
	}

	priceData, err := helper.ModelPriceHelper(c, relayInfo, 0, 0)
	if err != nil {
		return types.NewError(err, types.ErrorCodeModelPriceError, types.ErrOptionWithSkipRetry())
	}

	// pre-consume quota 预消耗配额
	preConsumedQuota, userQuota, newAPIError := preConsumeQuota(c, priceData.ShouldPreConsumedQuota, relayInfo)
	if newAPIError != nil {
		return newAPIError
	}

	defer func() {
		if newAPIError != nil {
			returnPreConsumedQuota(c, relayInfo, userQuota, preConsumedQuota)
		}
	}()

	adaptor := GetAdaptor(relayInfo.ApiType)
	if adaptor == nil {
		return types.NewError(fmt.Errorf("invalid api type: %d", relayInfo.ApiType), types.ErrorCodeInvalidApiType, types.ErrOptionWithSkipRetry())
	}
	adaptor.Init(relayInfo)
	//var requestBody io.Reader
	//firstWssRequest, _ := c.Get("first_wss_request")
	//requestBody = bytes.NewBuffer(firstWssRequest.([]byte))

	statusCodeMappingStr := c.GetString("status_code_mapping")
	resp, err := adaptor.DoRequest(c, relayInfo, nil)
	if err != nil {
		return types.NewError(err, types.ErrorCodeDoRequestFailed)
	}

	if resp != nil {
		relayInfo.TargetWs = resp.(*websocket.Conn)
		defer relayInfo.TargetWs.Close()
	}

	usage, newAPIError := adaptor.DoResponse(c, nil, relayInfo)
	if newAPIError != nil {
		// reset status code 重置状态码
		service.ResetStatusCode(newAPIError, statusCodeMappingStr)
		return newAPIError
	}
	service.PostWssConsumeQuota(c, relayInfo, relayInfo.UpstreamModelName, usage.(*dto.RealtimeUsage), preConsumedQuota,
		userQuota, priceData, "")
	return nil
}