new-api/relay/channel/gemini/adaptor.go

package gemini

import (
	"errors"
	"fmt"
	"github.com/gin-gonic/gin"
	"io"
	"net/http"
	"one-api/dto"
	"one-api/relay/channel"
	relaycommon "one-api/relay/common"
	"one-api/service"
)

type Adaptor struct {
}

func (a *Adaptor) Init(info *relaycommon.RelayInfo, request dto.GeneralOpenAIRequest) {
}

// 定义一个映射，存储模型名称和对应的版本
var modelVersionMap = map[string]string{
    "gemini-1.5-pro-latest": "v1beta",
    "gemini-ultra":   "v1beta",
}

func (a *Adaptor) GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
    // 从映射中获取模型名称对应的版本，如果找不到就使用 info.ApiVersion 或默认的版本 "v1"
    version, beta := modelVersionMap[info.UpstreamModelName]
    if !beta {
        if info.ApiVersion != "" {
            version = info.ApiVersion
        } else {
            version = "v1"
        }
    }

    action := "generateContent"
    if info.IsStream {
        action = "streamGenerateContent"
    }
    return fmt.Sprintf("%s/%s/models/%s:%s", info.BaseUrl, version, info.UpstreamModelName, action), nil
}

func (a *Adaptor) SetupRequestHeader(c *gin.Context, req *http.Request, info *relaycommon.RelayInfo) error {
	channel.SetupApiRequestHeader(info, c, req)
	req.Header.Set("x-goog-api-key", info.ApiKey)
	return nil
}

func (a *Adaptor) ConvertRequest(c *gin.Context, relayMode int, request *dto.GeneralOpenAIRequest) (any, error) {
	if request == nil {
		return nil, errors.New("request is nil")
	}
	return CovertGemini2OpenAI(*request), nil
}

func (a *Adaptor) DoRequest(c *gin.Context, info *relaycommon.RelayInfo, requestBody io.Reader) (*http.Response, error) {
	return channel.DoApiRequest(a, c, info, requestBody)
}

func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, info *relaycommon.RelayInfo) (usage *dto.Usage, err *dto.OpenAIErrorWithStatusCode) {
	if info.IsStream {
		var responseText string
		err, responseText = geminiChatStreamHandler(c, resp)
		usage, _ = service.ResponseText2Usage(responseText, info.UpstreamModelName, info.PromptTokens)
	} else {
		err, usage = geminiChatHandler(c, resp, info.PromptTokens, info.UpstreamModelName)
	}
	return
}

func (a *Adaptor) GetModelList() []string {
	return ModelList
}

func (a *Adaptor) GetChannelName() string {
	return ChannelName
}