624 lines
20 KiB
Go
624 lines
20 KiB
Go
package controller
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"log"
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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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"time"
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"github.com/gin-gonic/gin"
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)
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func relayTextHelper(c *gin.Context, relayMode int) *OpenAIErrorWithStatusCode {
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channelType := c.GetInt("channel")
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tokenId := c.GetInt("token_id")
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userId := c.GetInt("id")
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consumeQuota := c.GetBool("consume_quota")
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group := c.GetString("group")
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var textRequest GeneralOpenAIRequest
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if consumeQuota || channelType == common.ChannelTypeAzure || channelType == common.ChannelTypePaLM {
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err := common.UnmarshalBodyReusable(c, &textRequest)
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if err != nil {
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return errorWrapper(err, "bind_request_body_failed", http.StatusBadRequest)
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}
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}
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if relayMode == RelayModeModerations && textRequest.Model == "" {
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textRequest.Model = "text-moderation-latest"
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}
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if relayMode == RelayModeEmbeddings && textRequest.Model == "" {
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textRequest.Model = c.Param("model")
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}
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// request validation
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if textRequest.Model == "" {
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return errorWrapper(errors.New("model is required"), "required_field_missing", http.StatusBadRequest)
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}
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switch relayMode {
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case RelayModeCompletions:
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if textRequest.Prompt == "" {
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return errorWrapper(errors.New("field prompt is required"), "required_field_missing", http.StatusBadRequest)
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}
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case RelayModeChatCompletions:
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if textRequest.Messages == nil || len(textRequest.Messages) == 0 {
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return errorWrapper(errors.New("field messages is required"), "required_field_missing", http.StatusBadRequest)
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}
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case RelayModeEmbeddings:
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case RelayModeModerations:
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if textRequest.Input == "" {
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return errorWrapper(errors.New("field input is required"), "required_field_missing", http.StatusBadRequest)
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}
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case RelayModeEdits:
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if textRequest.Instruction == "" {
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return errorWrapper(errors.New("field instruction is required"), "required_field_missing", http.StatusBadRequest)
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}
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}
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// map model name
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modelMapping := c.GetString("model_mapping")
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isModelMapped := false
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if modelMapping != "" {
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modelMap := make(map[string]string)
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err := json.Unmarshal([]byte(modelMapping), &modelMap)
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if err != nil {
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return errorWrapper(err, "unmarshal_model_mapping_failed", http.StatusInternalServerError)
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}
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if modelMap[textRequest.Model] != "" {
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textRequest.Model = modelMap[textRequest.Model]
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isModelMapped = true
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}
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}
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// Get token info
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tokenInfo, err := model.GetTokenById(tokenId)
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if err != nil {
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return errorWrapper(err, "get_token_info_failed", http.StatusInternalServerError)
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}
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hasModelAvailable := func() bool {
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for _, token := range strings.Split(tokenInfo.Models, ",") {
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if token == textRequest.Model {
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return true
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}
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}
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return false
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}()
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if !hasModelAvailable {
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return errorWrapper(errors.New("model not available for use"), "model_not_available_for_use", http.StatusBadRequest)
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}
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baseURL := common.ChannelBaseURLs[channelType]
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requestURL := c.Request.URL.String()
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if c.GetString("base_url") != "" {
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baseURL = c.GetString("base_url")
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}
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fullRequestURL := fmt.Sprintf("%s%s", baseURL, requestURL)
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if channelType == common.ChannelTypeAzure {
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// https://learn.microsoft.com/en-us/azure/cognitive-services/openai/chatgpt-quickstart?pivots=rest-api&tabs=command-line#rest-api
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query := c.Request.URL.Query()
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apiVersion := query.Get("api-version")
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if apiVersion == "" {
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apiVersion = c.GetString("api_version")
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}
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requestURL := strings.Split(requestURL, "?")[0]
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requestURL = fmt.Sprintf("%s?api-version=%s", requestURL, apiVersion)
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baseURL = c.GetString("base_url")
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task := strings.TrimPrefix(requestURL, "/v1/")
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model_ := textRequest.Model
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model_ = strings.Replace(model_, ".", "", -1)
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// https://github.com/songquanpeng/one-api/issues/67
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model_ = strings.TrimSuffix(model_, "-0301")
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model_ = strings.TrimSuffix(model_, "-0314")
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model_ = strings.TrimSuffix(model_, "-0613")
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fullRequestURL = fmt.Sprintf("%s/openai/deployments/%s/%s", baseURL, model_, task)
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} else if channelType == common.ChannelTypeChatGPTWeb {
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// remove /v1/chat/completions from request url
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requestURL := strings.Split(requestURL, "/v1/chat/completions")[0]
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fullRequestURL = fmt.Sprintf("%s%s", baseURL, requestURL)
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} else if channelType == common.ChannelTypeChatbotUI {
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// remove /v1/chat/completions from request url
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requestURL := strings.Split(requestURL, "/v1/chat/completions")[0]
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fullRequestURL = fmt.Sprintf("%s%s", baseURL, requestURL)
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} else if channelType == common.ChannelTypePaLM {
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err := relayPaLM(textRequest, c)
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return err
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}
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var promptTokens int
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var completionTokens int
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switch relayMode {
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case RelayModeChatCompletions:
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promptTokens = countTokenMessages(textRequest.Messages, textRequest.Model)
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case RelayModeCompletions:
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promptTokens = countTokenInput(textRequest.Prompt, textRequest.Model)
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case RelayModeModerations:
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promptTokens = countTokenInput(textRequest.Input, textRequest.Model)
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}
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preConsumedTokens := common.PreConsumedQuota
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if textRequest.MaxTokens != 0 {
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preConsumedTokens = promptTokens + textRequest.MaxTokens
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}
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modelRatio := common.GetModelRatio(textRequest.Model)
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groupRatio := common.GetGroupRatio(group)
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ratio := modelRatio * groupRatio
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preConsumedQuota := int(float64(preConsumedTokens) * ratio)
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userQuota, err := model.CacheGetUserQuota(userId)
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if err != nil {
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return errorWrapper(err, "get_user_quota_failed", http.StatusInternalServerError)
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}
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if userQuota > 10*preConsumedQuota {
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// in this case, we do not pre-consume quota
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// because the user has enough quota
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preConsumedQuota = 0
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}
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if consumeQuota && preConsumedQuota > 0 {
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err := model.PreConsumeTokenQuota(tokenId, preConsumedQuota)
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if err != nil {
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return errorWrapper(err, "pre_consume_token_quota_failed", http.StatusForbidden)
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}
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}
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var requestBody io.Reader
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if isModelMapped {
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jsonStr, err := json.Marshal(textRequest)
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if err != nil {
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return errorWrapper(err, "marshal_text_request_failed", http.StatusInternalServerError)
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}
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requestBody = bytes.NewBuffer(jsonStr)
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} else {
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bodyBytes, err := io.ReadAll(c.Request.Body)
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if err != nil {
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return errorWrapper(err, "read_request_body_failed", http.StatusInternalServerError)
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}
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var bodyMap map[string]interface{}
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err = json.Unmarshal(bodyBytes, &bodyMap)
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if err != nil {
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return errorWrapper(err, "unmarshal_request_body_failed", http.StatusInternalServerError)
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}
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// Add "stream":true to body map if it doesn't exist
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if _, exists := bodyMap["stream"]; !exists {
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bodyMap["stream"] = true
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}
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// Marshal the body map back into JSON
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bodyBytes, err = json.Marshal(bodyMap)
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if err != nil {
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return errorWrapper(err, "marshal_request_body_failed", http.StatusInternalServerError)
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}
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requestBody = bytes.NewBuffer(bodyBytes)
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}
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if channelType == common.ChannelTypeChatGPTWeb {
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// Get system message from Message json, Role == "system"
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var reqBody ChatRequest
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var systemMessage Message
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// Parse requestBody into systemMessage
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err := json.NewDecoder(requestBody).Decode(&reqBody)
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if err != nil {
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return errorWrapper(err, "decode_request_body_failed", http.StatusInternalServerError)
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}
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for _, message := range reqBody.Messages {
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if message.Role == "system" {
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systemMessage = message
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break
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}
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}
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var prompt string
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// Get all the Message, Roles from request.Messages, and format it into string by
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// ||> role: content
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for _, message := range reqBody.Messages {
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// Exclude system message
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if message.Role == "system" {
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continue
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}
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prompt += "||> " + message.Role + ": " + message.Content + "\n"
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}
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// Construct json data without adding escape character
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map1 := make(map[string]interface{})
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map1["prompt"] = prompt + "\nResponse as assistant, but do not include the role in response."
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map1["systemMessage"] = systemMessage.Content
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if reqBody.Temperature != 0 {
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map1["temperature"] = formatFloat(reqBody.Temperature)
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}
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if reqBody.TopP != 0 {
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map1["top_p"] = formatFloat(reqBody.TopP)
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}
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// Convert map to json string
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jsonData, err := json.Marshal(map1)
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if err != nil {
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return errorWrapper(err, "marshal_json_failed", http.StatusInternalServerError)
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}
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// Convert json string to io.Reader
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requestBody = bytes.NewReader(jsonData)
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} else if channelType == common.ChannelTypeChatbotUI {
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// Get system message from Message json, Role == "system"
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var reqBody ChatRequest
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// Parse requestBody into systemMessage
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err := json.NewDecoder(requestBody).Decode(&reqBody)
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if err != nil {
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return errorWrapper(err, "decode_request_body_failed", http.StatusInternalServerError)
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}
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// Get system message from Message json, Role == "system"
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var systemMessage string
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for _, message := range reqBody.Messages {
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if message.Role == "system" {
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systemMessage = message.Content
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break
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}
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}
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// Construct json data without adding escape character
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map1 := make(map[string]interface{})
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map1["prompt"] = systemMessage
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map1["temperature"] = formatFloat(reqBody.Temperature)
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map1["key"] = ""
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map1["messages"] = reqBody.Messages
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map1["model"] = map[string]interface{}{
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"id": reqBody.Model,
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}
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// Convert map to json string
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jsonData, err := json.Marshal(map1)
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if err != nil {
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return errorWrapper(err, "marshal_json_failed", http.StatusInternalServerError)
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}
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// Convert json string to io.Reader
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requestBody = bytes.NewReader(jsonData)
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}
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req, err := http.NewRequest(c.Request.Method, fullRequestURL, requestBody)
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if err != nil {
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return errorWrapper(err, "new_request_failed", http.StatusInternalServerError)
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}
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if channelType == common.ChannelTypeAzure {
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key := c.Request.Header.Get("Authorization")
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key = strings.TrimPrefix(key, "Bearer ")
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req.Header.Set("api-key", key)
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} else {
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req.Header.Set("Authorization", c.Request.Header.Get("Authorization"))
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}
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req.Header.Set("Content-Type", c.Request.Header.Get("Content-Type"))
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req.Header.Set("Accept", c.Request.Header.Get("Accept"))
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//req.Header.Set("Connection", c.Request.Header.Get("Connection"))
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if c.GetBool("enable_ip_randomization") == true {
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// Generate random IP
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ip := common.GenerateIP()
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req.Header.Set("X-Forwarded-For", ip)
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req.Header.Set("X-Real-IP", ip)
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req.Header.Set("X-Client-IP", ip)
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req.Header.Set("X-Forwarded-Host", ip)
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req.Header.Set("X-Originating-IP", ip)
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req.RemoteAddr = ip
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req.Header.Set("X-Remote-IP", ip)
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req.Header.Set("X-Remote-Addr", ip)
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}
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custom_http_headers := c.GetString("custom_http_headers")
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if custom_http_headers != "" {
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var custom_http_headers_map map[string]string
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err := json.Unmarshal([]byte(custom_http_headers), &custom_http_headers_map)
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if err != nil {
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return errorWrapper(err, "unmarshal_custom_http_headers_failed", http.StatusInternalServerError)
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}
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for key, value := range custom_http_headers_map {
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req.Header.Set(key, value)
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}
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}
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return errorWrapper(err, "do_request_failed", http.StatusInternalServerError)
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}
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if resp.StatusCode != http.StatusOK {
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// Print the body in string
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if resp.Body != nil {
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buf := new(bytes.Buffer)
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buf.ReadFrom(resp.Body)
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log.Printf("Error Channel (%s) (%s): %s", baseURL, textRequest.Model, buf.String())
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return errorWrapper(err, "request_failed", resp.StatusCode)
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}
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return errorWrapper(err, "request_failed", resp.StatusCode)
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}
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err = req.Body.Close()
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if err != nil {
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return errorWrapper(err, "close_request_body_failed", http.StatusInternalServerError)
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}
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err = c.Request.Body.Close()
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if err != nil {
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return errorWrapper(err, "close_request_body_failed", http.StatusInternalServerError)
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}
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var textResponse TextResponse
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isStream := strings.HasPrefix(resp.Header.Get("Content-Type"), "text/event-stream") || strings.HasPrefix(resp.Header.Get("Content-Type"), "application/octet-stream")
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var streamResponseText string
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defer func() {
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if consumeQuota {
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quota := 0
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completionRatio := 1.0
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if strings.HasPrefix(textRequest.Model, "gpt-3.5") {
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completionRatio = 1.333333
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}
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if strings.HasPrefix(textRequest.Model, "gpt-4") {
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completionRatio = 2
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}
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if isStream {
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completionTokens = countTokenText(streamResponseText, textRequest.Model)
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} else {
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promptTokens = textResponse.Usage.PromptTokens
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completionTokens = textResponse.Usage.CompletionTokens
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}
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quota = promptTokens + int(float64(completionTokens)*completionRatio)
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quota = int(float64(quota) * ratio)
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if ratio != 0 && quota <= 0 {
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quota = 1
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}
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totalTokens := promptTokens + completionTokens
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if totalTokens == 0 {
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// in this case, must be some error happened
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// we cannot just return, because we may have to return the pre-consumed quota
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quota = 0
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}
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quotaDelta := quota - preConsumedQuota
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err := model.PostConsumeTokenQuota(tokenId, quotaDelta)
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if err != nil {
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common.SysError("error consuming token remain quota: " + err.Error())
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}
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err = model.CacheUpdateUserQuota(userId)
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if err != nil {
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common.SysError("error update user quota cache: " + err.Error())
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}
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if quota != 0 {
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tokenName := c.GetString("token_name")
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logContent := fmt.Sprintf("模型倍率 %.2f，分组倍率 %.2f", modelRatio, groupRatio)
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model.RecordConsumeLog(userId, promptTokens, completionTokens, textRequest.Model, tokenName, quota, logContent)
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model.UpdateUserUsedQuotaAndRequestCount(userId, quota)
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channelId := c.GetInt("channel_id")
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model.UpdateChannelUsedQuota(channelId, quota)
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}
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}
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}()
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if isStream || channelType == common.ChannelTypeChatGPTWeb || channelType == common.ChannelTypeChatbotUI {
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dataChan := make(chan string)
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stopChan := make(chan bool)
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scanner := bufio.NewScanner(resp.Body)
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if channelType != common.ChannelTypeChatGPTWeb && channelType != common.ChannelTypeChatbotUI {
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scanner.Split(func(data []byte, atEOF bool) (advance int, token []byte, err error) {
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if atEOF && len(data) == 0 {
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return 0, nil, nil
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}
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if i := strings.Index(string(data), "\n"); i >= 0 {
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return i + 2, data[0:i], nil
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}
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if atEOF {
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return len(data), data, nil
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}
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return 0, nil, nil
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})
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}
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go func() {
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for scanner.Scan() {
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data := scanner.Text()
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if len(data) < 6 { // must be something wrong!
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continue
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}
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if channelType == common.ChannelTypeChatGPTWeb {
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var chatResponse ChatGptWebChatResponse
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err = json.Unmarshal([]byte(data), &chatResponse)
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if err != nil {
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// Print the body in string
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buf := new(bytes.Buffer)
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buf.ReadFrom(resp.Body)
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common.SysError("error unmarshalling chat response: " + err.Error() + " " + buf.String())
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return
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}
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// if response role is assistant and contains delta, append the content to streamResponseText
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if chatResponse.Role == "assistant" && chatResponse.Detail != nil {
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for _, choice := range chatResponse.Detail.Choices {
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streamResponseText += choice.Delta.Content
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returnObj := map[string]interface{}{
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"id": chatResponse.ID,
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"object": chatResponse.Detail.Object,
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"created": chatResponse.Detail.Created,
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"model": chatResponse.Detail.Model,
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"choices": []map[string]interface{}{
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// set finish_reason to null in json
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{
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"finish_reason": nil,
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"index": 0,
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"delta": map[string]interface{}{
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"content": choice.Delta.Content,
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},
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},
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},
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}
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jsonData, _ := json.Marshal(returnObj)
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dataChan <- "data: " + string(jsonData)
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}
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}
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} else if channelType == common.ChannelTypeChatbotUI {
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returnObj := map[string]interface{}{
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"id": "chatcmpl-" + strconv.Itoa(int(time.Now().UnixNano())),
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"object": "text_completion",
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"created": time.Now().Unix(),
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"model": textRequest.Model,
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"choices": []map[string]interface{}{
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// set finish_reason to null in json
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{
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"finish_reason": nil,
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"index": 0,
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"delta": map[string]interface{}{
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"content": data,
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},
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},
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},
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}
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jsonData, _ := json.Marshal(returnObj)
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dataChan <- "data: " + string(jsonData)
|
|
} else {
|
|
// If data has event: event content inside, remove it, it can be prefix or inside the data
|
|
if strings.HasPrefix(data, "event:") || strings.Contains(data, "event:") {
|
|
// Remove event: event in the front or back
|
|
data = strings.TrimPrefix(data, "event: event")
|
|
data = strings.TrimSuffix(data, "event: event")
|
|
// Remove everything, only keep `data: {...}` <--- this is the json
|
|
// Find the start and end indices of `data: {...}` substring
|
|
startIndex := strings.Index(data, "data:")
|
|
endIndex := strings.LastIndex(data, "}")
|
|
|
|
// If both indices are found and end index is greater than start index
|
|
if startIndex != -1 && endIndex != -1 && endIndex > startIndex {
|
|
// Extract the `data: {...}` substring
|
|
data = data[startIndex : endIndex+1]
|
|
}
|
|
|
|
// Trim whitespace and newlines from the modified data string
|
|
data = strings.TrimSpace(data)
|
|
}
|
|
if !strings.HasPrefix(data, "data:") {
|
|
continue
|
|
}
|
|
dataChan <- data
|
|
data = data[6:]
|
|
if !strings.HasPrefix(data, "[DONE]") {
|
|
switch relayMode {
|
|
case RelayModeChatCompletions:
|
|
var streamResponse ChatCompletionsStreamResponse
|
|
err = json.Unmarshal([]byte(data), &streamResponse)
|
|
if err != nil {
|
|
common.SysError("error unmarshalling stream response: " + err.Error())
|
|
return
|
|
}
|
|
for _, choice := range streamResponse.Choices {
|
|
streamResponseText += choice.Delta.Content
|
|
}
|
|
case RelayModeCompletions:
|
|
var streamResponse CompletionsStreamResponse
|
|
err = json.Unmarshal([]byte(data), &streamResponse)
|
|
if err != nil {
|
|
common.SysError("error unmarshalling stream response: " + err.Error())
|
|
return
|
|
}
|
|
for _, choice := range streamResponse.Choices {
|
|
streamResponseText += choice.Text
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
stopChan <- true
|
|
}()
|
|
|
|
c.Writer.Header().Set("Content-Type", "text/event-stream")
|
|
c.Writer.Header().Set("Cache-Control", "no-cache")
|
|
c.Writer.Header().Set("Connection", "keep-alive")
|
|
c.Writer.Header().Set("Transfer-Encoding", "chunked")
|
|
c.Writer.Header().Set("X-Accel-Buffering", "no")
|
|
c.Stream(func(w io.Writer) bool {
|
|
select {
|
|
case data := <-dataChan:
|
|
if strings.HasPrefix(data, "data: [DONE]") {
|
|
data = data[:12]
|
|
}
|
|
// some implementations may add \r at the end of data
|
|
data = strings.TrimSuffix(data, "\r")
|
|
c.Render(-1, common.CustomEvent{Data: data})
|
|
return true
|
|
case <-stopChan:
|
|
return false
|
|
}
|
|
})
|
|
err = resp.Body.Close()
|
|
if err != nil {
|
|
return errorWrapper(err, "close_response_body_failed", http.StatusInternalServerError)
|
|
}
|
|
return nil
|
|
} else {
|
|
if consumeQuota {
|
|
responseBody, err := io.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return errorWrapper(err, "read_response_body_failed", http.StatusInternalServerError)
|
|
}
|
|
err = resp.Body.Close()
|
|
if err != nil {
|
|
return errorWrapper(err, "close_response_body_failed", http.StatusInternalServerError)
|
|
}
|
|
err = json.Unmarshal(responseBody, &textResponse)
|
|
if err != nil {
|
|
return errorWrapper(err, "unmarshal_response_body_failed", http.StatusInternalServerError)
|
|
}
|
|
if textResponse.Error.Type != "" {
|
|
return &OpenAIErrorWithStatusCode{
|
|
OpenAIError: textResponse.Error,
|
|
StatusCode: resp.StatusCode,
|
|
}
|
|
}
|
|
// Reset response body
|
|
resp.Body = io.NopCloser(bytes.NewBuffer(responseBody))
|
|
}
|
|
// We shouldn't set the header before we parse the response body, because the parse part may fail.
|
|
// And then we will have to send an error response, but in this case, the header has already been set.
|
|
// So the client will be confused by the response.
|
|
// For example, Postman will report error, and we cannot check the response at all.
|
|
for k, v := range resp.Header {
|
|
c.Writer.Header().Set(k, v[0])
|
|
}
|
|
c.Writer.WriteHeader(resp.StatusCode)
|
|
_, err = io.Copy(c.Writer, resp.Body)
|
|
if err != nil {
|
|
return errorWrapper(err, "copy_response_body_failed", http.StatusInternalServerError)
|
|
}
|
|
err = resp.Body.Close()
|
|
if err != nil {
|
|
return errorWrapper(err, "close_response_body_failed", http.StatusInternalServerError)
|
|
}
|
|
return nil
|
|
}
|
|
}
|