99 lines
2.8 KiB
Go
99 lines
2.8 KiB
Go
package middleware
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import (
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"fmt"
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"net/http"
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"one-api/common"
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"one-api/model"
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"strconv"
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"strings"
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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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}
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func Distribute() func(c *gin.Context) {
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return func(c *gin.Context) {
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userId := c.GetInt("id")
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userGroup, _ := model.CacheGetUserGroup(userId)
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c.Set("group", userGroup)
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var channel *model.Channel
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channelId, ok := c.Get("channelId")
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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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abortWithMessage(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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abortWithMessage(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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abortWithMessage(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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var modelRequest ModelRequest
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var err error
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if !strings.HasPrefix(c.Request.URL.Path, "/v1/audio") {
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err = common.UnmarshalBodyReusable(c, &modelRequest)
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}
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if err != nil {
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abortWithMessage(c, http.StatusBadRequest, "无效的请求")
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return
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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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if modelRequest.Model == "" {
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modelRequest.Model = "dall-e"
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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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if modelRequest.Model == "" {
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modelRequest.Model = "whisper-1"
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}
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}
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channel, err = model.CacheGetRandomSatisfiedChannel(userGroup, modelRequest.Model)
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if err != nil {
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message := fmt.Sprintf("当前分组 %s 下对于模型 %s 无可用渠道", userGroup, modelRequest.Model)
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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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abortWithMessage(c, http.StatusServiceUnavailable, message)
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return
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}
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}
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c.Set("channel", channel.Type)
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c.Set("channel_id", channel.Id)
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c.Set("channel_name", channel.Name)
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c.Set("model_mapping", channel.GetModelMapping())
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c.Request.Header.Set("Authorization", fmt.Sprintf("Bearer %s", channel.Key))
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c.Set("base_url", channel.GetBaseURL())
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switch channel.Type {
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case common.ChannelTypeAzure:
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c.Set("api_version", channel.Other)
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case common.ChannelTypeXunfei:
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c.Set("api_version", channel.Other)
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case common.ChannelTypeAIProxyLibrary:
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c.Set("library_id", channel.Other)
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}
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c.Next()
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}
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}
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