new-api/relay/websocket.go

package relay

import (
	"encoding/json"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/gorilla/websocket"
	"net/http"
	"one-api/dto"
	relaycommon "one-api/relay/common"
	"one-api/relay/helper"
	"one-api/service"
)

func WssHelper(c *gin.Context, ws *websocket.Conn) (openaiErr *dto.OpenAIErrorWithStatusCode) {
	relayInfo := relaycommon.GenRelayInfoWs(c, ws)

	// get & validate textRequest 获取并验证文本请求
	//realtimeEvent, err := getAndValidateWssRequest(c, ws)
	//if err != nil {
	//	common.LogError(c, fmt.Sprintf("getAndValidateWssRequest failed: %s", err.Error()))
	//	return service.OpenAIErrorWrapperLocal(err, "invalid_text_request", http.StatusBadRequest)
	//}

	// map model name
	modelMapping := c.GetString("model_mapping")
	//isModelMapped := false
	if modelMapping != "" && modelMapping != "{}" {
		modelMap := make(map[string]string)
		err := json.Unmarshal([]byte(modelMapping), &modelMap)
		if err != nil {
			return service.OpenAIErrorWrapperLocal(err, "unmarshal_model_mapping_failed", http.StatusInternalServerError)
		}
		if modelMap[relayInfo.OriginModelName] != "" {
			relayInfo.UpstreamModelName = modelMap[relayInfo.OriginModelName]
			// set upstream model name
			//isModelMapped = true
		}
	}

	priceData, err := helper.ModelPriceHelper(c, relayInfo, 0, 0)
	if err != nil {
		return service.OpenAIErrorWrapperLocal(err, "model_price_error", http.StatusInternalServerError)
	}

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

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

	adaptor := GetAdaptor(relayInfo.ApiType)
	if adaptor == nil {
		return service.OpenAIErrorWrapperLocal(fmt.Errorf("invalid api type: %d", relayInfo.ApiType), "invalid_api_type", http.StatusBadRequest)
	}
	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 service.OpenAIErrorWrapper(err, "do_request_failed", http.StatusInternalServerError)
	}

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

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