mirror of
https://github.com/QuantumNous/new-api.git
synced 2026-03-30 04:22:58 +00:00
387 lines
15 KiB
Go
387 lines
15 KiB
Go
package middleware
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import (
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"errors"
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"fmt"
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"net/http"
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"slices"
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"strconv"
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"strings"
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"time"
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"github.com/QuantumNous/new-api/common"
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"github.com/QuantumNous/new-api/constant"
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"github.com/QuantumNous/new-api/dto"
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"github.com/QuantumNous/new-api/model"
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relayconstant "github.com/QuantumNous/new-api/relay/constant"
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"github.com/QuantumNous/new-api/service"
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"github.com/QuantumNous/new-api/setting/ratio_setting"
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"github.com/QuantumNous/new-api/types"
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"github.com/gin-gonic/gin"
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)
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type ModelRequest struct {
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Model string `json:"model"`
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Group string `json:"group,omitempty"`
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}
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func Distribute() func(c *gin.Context) {
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return func(c *gin.Context) {
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var channel *model.Channel
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channelId, ok := common.GetContextKey(c, constant.ContextKeyTokenSpecificChannelId)
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modelRequest, shouldSelectChannel, err := getModelRequest(c)
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if err != nil {
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abortWithOpenAiMessage(c, http.StatusBadRequest, "Invalid request, "+err.Error())
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return
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}
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if ok {
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id, err := strconv.Atoi(channelId.(string))
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if err != nil {
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abortWithOpenAiMessage(c, http.StatusBadRequest, "无效的渠道 Id")
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return
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}
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channel, err = model.GetChannelById(id, true)
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if err != nil {
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abortWithOpenAiMessage(c, http.StatusBadRequest, "无效的渠道 Id")
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return
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}
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if channel.Status != common.ChannelStatusEnabled {
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abortWithOpenAiMessage(c, http.StatusForbidden, "该渠道已被禁用")
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return
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}
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} else {
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// Select a channel for the user
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// check token model mapping
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modelLimitEnable := common.GetContextKeyBool(c, constant.ContextKeyTokenModelLimitEnabled)
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if modelLimitEnable {
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s, ok := common.GetContextKey(c, constant.ContextKeyTokenModelLimit)
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if !ok {
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// token model limit is empty, all models are not allowed
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abortWithOpenAiMessage(c, http.StatusForbidden, "该令牌无权访问任何模型")
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return
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}
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var tokenModelLimit map[string]bool
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tokenModelLimit, ok = s.(map[string]bool)
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if !ok {
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tokenModelLimit = map[string]bool{}
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}
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matchName := ratio_setting.FormatMatchingModelName(modelRequest.Model) // match gpts & thinking-*
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if _, ok := tokenModelLimit[matchName]; !ok {
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abortWithOpenAiMessage(c, http.StatusForbidden, "该令牌无权访问模型 "+modelRequest.Model)
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return
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}
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}
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if shouldSelectChannel {
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if modelRequest.Model == "" {
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abortWithOpenAiMessage(c, http.StatusBadRequest, "未指定模型名称，模型名称不能为空")
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return
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}
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var selectGroup string
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usingGroup := common.GetContextKeyString(c, constant.ContextKeyUsingGroup)
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// check path is /pg/chat/completions
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if strings.HasPrefix(c.Request.URL.Path, "/pg/chat/completions") {
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playgroundRequest := &dto.PlayGroundRequest{}
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err = common.UnmarshalBodyReusable(c, playgroundRequest)
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if err != nil {
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abortWithOpenAiMessage(c, http.StatusBadRequest, "无效的playground请求, "+err.Error())
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return
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}
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if playgroundRequest.Group != "" {
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if !service.GroupInUserUsableGroups(usingGroup, playgroundRequest.Group) && playgroundRequest.Group != usingGroup {
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abortWithOpenAiMessage(c, http.StatusForbidden, "无权访问该分组")
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return
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}
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usingGroup = playgroundRequest.Group
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common.SetContextKey(c, constant.ContextKeyUsingGroup, usingGroup)
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}
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}
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channel, selectGroup, err = service.CacheGetRandomSatisfiedChannel(c, usingGroup, modelRequest.Model, 0)
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if err != nil {
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showGroup := usingGroup
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if usingGroup == "auto" {
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showGroup = fmt.Sprintf("auto(%s)", selectGroup)
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}
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message := fmt.Sprintf("获取分组 %s 下模型 %s 的可用渠道失败（distributor）: %s", showGroup, modelRequest.Model, err.Error())
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// 如果错误，但是渠道不为空，说明是数据库一致性问题
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//if channel != nil {
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// common.SysError(fmt.Sprintf("渠道不存在：%d", channel.Id))
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// message = "数据库一致性已被破坏，请联系管理员"
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//}
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abortWithOpenAiMessage(c, http.StatusServiceUnavailable, message, string(types.ErrorCodeModelNotFound))
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return
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}
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if channel == nil {
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abortWithOpenAiMessage(c, http.StatusServiceUnavailable, fmt.Sprintf("分组 %s 下模型 %s 无可用渠道（distributor）", usingGroup, modelRequest.Model), string(types.ErrorCodeModelNotFound))
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return
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}
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}
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}
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common.SetContextKey(c, constant.ContextKeyRequestStartTime, time.Now())
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SetupContextForSelectedChannel(c, channel, modelRequest.Model)
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c.Next()
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}
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}
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// getModelFromRequest 从请求中读取模型信息
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// 根据 Content-Type 自动处理：
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// - application/json
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// - application/x-www-form-urlencoded
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// - multipart/form-data
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func getModelFromRequest(c *gin.Context) (*ModelRequest, error) {
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var modelRequest ModelRequest
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err := common.UnmarshalBodyReusable(c, &modelRequest)
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if err != nil {
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return nil, errors.New("无效的请求, " + err.Error())
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}
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return &modelRequest, nil
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}
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func getModelRequest(c *gin.Context) (*ModelRequest, bool, error) {
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var modelRequest ModelRequest
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shouldSelectChannel := true
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var err error
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if strings.Contains(c.Request.URL.Path, "/mj/") {
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relayMode := relayconstant.Path2RelayModeMidjourney(c.Request.URL.Path)
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if relayMode == relayconstant.RelayModeMidjourneyTaskFetch ||
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relayMode == relayconstant.RelayModeMidjourneyTaskFetchByCondition ||
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relayMode == relayconstant.RelayModeMidjourneyNotify ||
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relayMode == relayconstant.RelayModeMidjourneyTaskImageSeed {
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shouldSelectChannel = false
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} else {
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midjourneyRequest := dto.MidjourneyRequest{}
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err = common.UnmarshalBodyReusable(c, &midjourneyRequest)
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if err != nil {
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return nil, false, errors.New("无效的midjourney请求, " + err.Error())
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}
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midjourneyModel, mjErr, success := service.GetMjRequestModel(relayMode, &midjourneyRequest)
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if mjErr != nil {
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return nil, false, fmt.Errorf(mjErr.Description)
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}
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if midjourneyModel == "" {
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if !success {
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return nil, false, fmt.Errorf("无效的请求, 无法解析模型")
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} else {
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// task fetch, task fetch by condition, notify
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shouldSelectChannel = false
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}
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}
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modelRequest.Model = midjourneyModel
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}
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c.Set("relay_mode", relayMode)
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} else if strings.Contains(c.Request.URL.Path, "/suno/") {
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relayMode := relayconstant.Path2RelaySuno(c.Request.Method, c.Request.URL.Path)
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if relayMode == relayconstant.RelayModeSunoFetch ||
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relayMode == relayconstant.RelayModeSunoFetchByID {
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shouldSelectChannel = false
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} else {
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modelName := service.CoverTaskActionToModelName(constant.TaskPlatformSuno, c.Param("action"))
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modelRequest.Model = modelName
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}
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c.Set("platform", string(constant.TaskPlatformSuno))
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c.Set("relay_mode", relayMode)
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} else if strings.Contains(c.Request.URL.Path, "/v1/videos/") && strings.HasSuffix(c.Request.URL.Path, "/remix") {
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relayMode := relayconstant.RelayModeVideoSubmit
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c.Set("relay_mode", relayMode)
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shouldSelectChannel = false
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} else if strings.Contains(c.Request.URL.Path, "/v1/videos") {
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//curl https://api.openai.com/v1/videos \
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// -H "Authorization: Bearer $OPENAI_API_KEY" \
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// -F "model=sora-2" \
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// -F "prompt=A calico cat playing a piano on stage"
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// -F input_reference="@image.jpg"
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relayMode := relayconstant.RelayModeUnknown
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if c.Request.Method == http.MethodPost {
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relayMode = relayconstant.RelayModeVideoSubmit
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req, err := getModelFromRequest(c)
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if err != nil {
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return nil, false, err
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}
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if req != nil {
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modelRequest.Model = req.Model
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}
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} else if c.Request.Method == http.MethodGet {
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relayMode = relayconstant.RelayModeVideoFetchByID
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shouldSelectChannel = false
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}
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c.Set("relay_mode", relayMode)
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} else if strings.Contains(c.Request.URL.Path, "/v1/video/generations") {
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relayMode := relayconstant.RelayModeUnknown
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if c.Request.Method == http.MethodPost {
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req, err := getModelFromRequest(c)
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if err != nil {
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return nil, false, err
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}
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modelRequest.Model = req.Model
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relayMode = relayconstant.RelayModeVideoSubmit
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} else if c.Request.Method == http.MethodGet {
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relayMode = relayconstant.RelayModeVideoFetchByID
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shouldSelectChannel = false
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}
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if _, ok := c.Get("relay_mode"); !ok {
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c.Set("relay_mode", relayMode)
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}
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} else if strings.HasPrefix(c.Request.URL.Path, "/v1beta/models/") || strings.HasPrefix(c.Request.URL.Path, "/v1/models/") {
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// Gemini API 路径处理: /v1beta/models/gemini-2.0-flash:generateContent
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relayMode := relayconstant.RelayModeGemini
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modelName := extractModelNameFromGeminiPath(c.Request.URL.Path)
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if modelName != "" {
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modelRequest.Model = modelName
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}
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c.Set("relay_mode", relayMode)
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} else if !strings.HasPrefix(c.Request.URL.Path, "/v1/audio/transcriptions") && !strings.Contains(c.Request.Header.Get("Content-Type"), "multipart/form-data") {
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req, err := getModelFromRequest(c)
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if err != nil {
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return nil, false, err
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}
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modelRequest.Model = req.Model
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}
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if strings.HasPrefix(c.Request.URL.Path, "/v1/realtime") {
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//wss://api.openai.com/v1/realtime?model=gpt-4o-realtime-preview-2024-10-01
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modelRequest.Model = c.Query("model")
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}
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if strings.HasPrefix(c.Request.URL.Path, "/v1/moderations") {
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if modelRequest.Model == "" {
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modelRequest.Model = "text-moderation-stable"
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}
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}
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if strings.HasSuffix(c.Request.URL.Path, "embeddings") {
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if modelRequest.Model == "" {
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modelRequest.Model = c.Param("model")
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}
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}
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if strings.HasPrefix(c.Request.URL.Path, "/v1/images/generations") {
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modelRequest.Model = common.GetStringIfEmpty(modelRequest.Model, "dall-e")
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} else if strings.HasPrefix(c.Request.URL.Path, "/v1/images/edits") {
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//modelRequest.Model = common.GetStringIfEmpty(c.PostForm("model"), "gpt-image-1")
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contentType := c.ContentType()
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if slices.Contains([]string{gin.MIMEPOSTForm, gin.MIMEMultipartPOSTForm}, contentType) {
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req, err := getModelFromRequest(c)
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if err == nil && req.Model != "" {
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modelRequest.Model = req.Model
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}
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}
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}
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if strings.HasPrefix(c.Request.URL.Path, "/v1/audio") {
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relayMode := relayconstant.RelayModeAudioSpeech
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if strings.HasPrefix(c.Request.URL.Path, "/v1/audio/speech") {
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modelRequest.Model = common.GetStringIfEmpty(modelRequest.Model, "tts-1")
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} else if strings.HasPrefix(c.Request.URL.Path, "/v1/audio/translations") {
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// 先尝试从请求读取
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if req, err := getModelFromRequest(c); err == nil && req.Model != "" {
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modelRequest.Model = req.Model
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}
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modelRequest.Model = common.GetStringIfEmpty(modelRequest.Model, "whisper-1")
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relayMode = relayconstant.RelayModeAudioTranslation
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} else if strings.HasPrefix(c.Request.URL.Path, "/v1/audio/transcriptions") {
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// 先尝试从请求读取
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if req, err := getModelFromRequest(c); err == nil && req.Model != "" {
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modelRequest.Model = req.Model
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}
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modelRequest.Model = common.GetStringIfEmpty(modelRequest.Model, "whisper-1")
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relayMode = relayconstant.RelayModeAudioTranscription
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}
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c.Set("relay_mode", relayMode)
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}
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if strings.HasPrefix(c.Request.URL.Path, "/pg/chat/completions") {
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// playground chat completions
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req, err := getModelFromRequest(c)
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if err != nil {
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return nil, false, err
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}
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modelRequest.Model = req.Model
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modelRequest.Group = req.Group
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common.SetContextKey(c, constant.ContextKeyTokenGroup, modelRequest.Group)
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}
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return &modelRequest, shouldSelectChannel, nil
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}
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func SetupContextForSelectedChannel(c *gin.Context, channel *model.Channel, modelName string) *types.NewAPIError {
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c.Set("original_model", modelName) // for retry
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if channel == nil {
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return types.NewError(errors.New("channel is nil"), types.ErrorCodeGetChannelFailed, types.ErrOptionWithSkipRetry())
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}
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common.SetContextKey(c, constant.ContextKeyChannelId, channel.Id)
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common.SetContextKey(c, constant.ContextKeyChannelName, channel.Name)
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common.SetContextKey(c, constant.ContextKeyChannelType, channel.Type)
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common.SetContextKey(c, constant.ContextKeyChannelCreateTime, channel.CreatedTime)
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common.SetContextKey(c, constant.ContextKeyChannelSetting, channel.GetSetting())
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common.SetContextKey(c, constant.ContextKeyChannelOtherSetting, channel.GetOtherSettings())
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common.SetContextKey(c, constant.ContextKeyChannelParamOverride, channel.GetParamOverride())
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common.SetContextKey(c, constant.ContextKeyChannelHeaderOverride, channel.GetHeaderOverride())
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if nil != channel.OpenAIOrganization && *channel.OpenAIOrganization != "" {
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common.SetContextKey(c, constant.ContextKeyChannelOrganization, *channel.OpenAIOrganization)
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}
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common.SetContextKey(c, constant.ContextKeyChannelAutoBan, channel.GetAutoBan())
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common.SetContextKey(c, constant.ContextKeyChannelModelMapping, channel.GetModelMapping())
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common.SetContextKey(c, constant.ContextKeyChannelStatusCodeMapping, channel.GetStatusCodeMapping())
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key, index, newAPIError := channel.GetNextEnabledKey()
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if newAPIError != nil {
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return newAPIError
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}
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if channel.ChannelInfo.IsMultiKey {
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common.SetContextKey(c, constant.ContextKeyChannelIsMultiKey, true)
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common.SetContextKey(c, constant.ContextKeyChannelMultiKeyIndex, index)
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} else {
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// 必须设置为 false，否则在重试到单个 key 的时候会导致日志显示错误
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common.SetContextKey(c, constant.ContextKeyChannelIsMultiKey, false)
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}
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// c.Request.Header.Set("Authorization", fmt.Sprintf("Bearer %s", key))
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common.SetContextKey(c, constant.ContextKeyChannelKey, key)
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common.SetContextKey(c, constant.ContextKeyChannelBaseUrl, channel.GetBaseURL())
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common.SetContextKey(c, constant.ContextKeySystemPromptOverride, false)
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// TODO: api_version统一
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switch channel.Type {
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case constant.ChannelTypeAzure:
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c.Set("api_version", channel.Other)
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case constant.ChannelTypeVertexAi:
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c.Set("region", channel.Other)
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case constant.ChannelTypeXunfei:
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c.Set("api_version", channel.Other)
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case constant.ChannelTypeGemini:
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c.Set("api_version", channel.Other)
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case constant.ChannelTypeAli:
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c.Set("plugin", channel.Other)
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case constant.ChannelCloudflare:
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c.Set("api_version", channel.Other)
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case constant.ChannelTypeMokaAI:
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c.Set("api_version", channel.Other)
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case constant.ChannelTypeCoze:
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c.Set("bot_id", channel.Other)
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}
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return nil
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}
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// extractModelNameFromGeminiPath 从 Gemini API URL 路径中提取模型名
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// 输入格式: /v1beta/models/gemini-2.0-flash:generateContent
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// 输出: gemini-2.0-flash
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func extractModelNameFromGeminiPath(path string) string {
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// 查找 "/models/" 的位置
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modelsPrefix := "/models/"
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modelsIndex := strings.Index(path, modelsPrefix)
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if modelsIndex == -1 {
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return ""
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}
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// 从 "/models/" 之后开始提取
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startIndex := modelsIndex + len(modelsPrefix)
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if startIndex >= len(path) {
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return ""
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}
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// 查找 ":" 的位置，模型名在 ":" 之前
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colonIndex := strings.Index(path[startIndex:], ":")
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if colonIndex == -1 {
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// 如果没有找到 ":"，返回从 "/models/" 到路径结尾的部分
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return path[startIndex:]
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}
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// 返回模型名部分
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return path[startIndex : startIndex+colonIndex]
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}
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