mirror of
https://github.com/infiniflow/ragflow.git
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401 lines
11 KiB
Go
401 lines
11 KiB
Go
//
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// Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package handler
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import (
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"encoding/json"
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"errors"
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"io"
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"net/http"
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"ragflow/internal/common"
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"strings"
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"github.com/gin-gonic/gin"
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"ragflow/internal/service"
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)
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// ChatSessionHandler chat session (conversation) handler
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type ChatSessionHandler struct {
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chatSessionService *service.ChatSessionService
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userService *service.UserService
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}
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// NewChatSessionHandler create chat session handler
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func NewChatSessionHandler(chatSessionService *service.ChatSessionService, userService *service.UserService) *ChatSessionHandler {
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return &ChatSessionHandler{
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chatSessionService: chatSessionService,
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userService: userService,
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}
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}
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// ListChatSessions list chat sessions for a dialog
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// @Summary List Chat Sessions
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// @Description Get list of chat sessions for a specific dialog
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// @Tags chat_session
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// @Accept json
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// @Produce json
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// @Param chat_id query string true "chat ID"
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// @Success 200 {object} service.ListChatSessionsResponse
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// @Router /api/v1/chats/<chat_id>/sessions [get]
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func (h *ChatSessionHandler) ListChatSessions(c *gin.Context) {
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user, errorCode, errorMessage := GetUser(c)
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if errorCode != common.CodeSuccess {
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jsonError(c, errorCode, errorMessage)
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return
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}
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userID := user.ID
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// Get chat_id from query parameter
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chatID := c.Param("chat_id")
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if chatID == "" {
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c.JSON(http.StatusBadRequest, gin.H{
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"code": 400,
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"message": "chat_id is required",
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})
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return
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}
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// Call service to list chat sessions
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result, err := h.chatSessionService.ListChatSessions(userID, chatID)
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if err != nil {
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// Check if it's an authorization error
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if err.Error() == "Only owner of dialog authorized for this operation" {
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c.JSON(http.StatusForbidden, gin.H{
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"code": 403,
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"data": false,
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"message": err.Error(),
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})
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return
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}
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c.JSON(http.StatusInternalServerError, gin.H{
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"code": 500,
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"message": err.Error(),
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})
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return
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}
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c.JSON(http.StatusOK, gin.H{
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"code": 0,
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"data": result.Sessions,
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"message": "success",
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})
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}
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type ChatCompletionsRequest struct {
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ChatID string `json:"chat_id,omitempty"`
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SessionID string `json:"session_id,omitempty"`
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ConversationID string `json:"conversation_id,omitempty"`
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Messages []map[string]interface{} `json:"messages,omitempty"`
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Question string `json:"question,omitempty"`
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Files []interface{} `json:"files,omitempty"`
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LLMID string `json:"llm_id,omitempty"`
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PassAllHistoryMessages *bool `json:"pass_all_history_messages,omitempty"`
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PassAllHistory *bool `json:"pass_all_history,omitempty"`
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Legacy bool `json:"legacy,omitempty"`
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Stream *bool `json:"stream"`
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Temperature *float64 `json:"temperature,omitempty"`
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TopP *float64 `json:"top_p,omitempty"`
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FrequencyPenalty *float64 `json:"frequency_penalty,omitempty"`
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PresencePenalty *float64 `json:"presence_penalty,omitempty"`
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MaxTokens *int `json:"max_tokens,omitempty"`
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}
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// ChatCompletions chat completion
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// @Summary Chat Completion
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// @Description Send messages to the chat model and get a response.
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// @Description Default is streaming (text/event-stream); set stream:false for JSON.
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// @Tags chat_session
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// @Accept json
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// @Produce json, text/event-stream
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// @Param request body ChatCompletionsRequest true "chat completion request"
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// @Success 200 {object} map[string]interface{} "Non-streaming JSON response"
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// @Success 200 {string} text/event-stream "Streaming SSE response"
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// @Router /api/v1/chat/completions [post]
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func (h *ChatSessionHandler) ChatCompletions(c *gin.Context) {
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user, errorCode, errorMessage := GetUser(c)
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if errorCode != common.CodeSuccess {
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jsonError(c, errorCode, errorMessage)
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return
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}
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userID := user.ID
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var rawBody map[string]interface{}
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if err := c.ShouldBindJSON(&rawBody); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
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return
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}
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var req ChatCompletionsRequest
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b, err := json.Marshal(rawBody)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
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return
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}
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if err := json.Unmarshal(b, &req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
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return
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}
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// Normalize session_id / conversation_id
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sessionID := req.SessionID
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if sessionID == "" {
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sessionID = req.ConversationID
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}
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// Build generation config
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genConfig := make(map[string]interface{})
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if req.Temperature != nil {
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genConfig["temperature"] = *req.Temperature
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}
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if req.TopP != nil {
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genConfig["top_p"] = *req.TopP
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}
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if req.FrequencyPenalty != nil {
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genConfig["frequency_penalty"] = *req.FrequencyPenalty
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}
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if req.PresencePenalty != nil {
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genConfig["presence_penalty"] = *req.PresencePenalty
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}
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if req.MaxTokens != nil {
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genConfig["max_tokens"] = *req.MaxTokens
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}
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// Resolve pass_all_history from either alias
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passAllHistory := false
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if req.PassAllHistory != nil {
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passAllHistory = *req.PassAllHistory
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}
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if req.PassAllHistoryMessages != nil {
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passAllHistory = *req.PassAllHistoryMessages
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}
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// Remove known keys from rawBody; what remains is passthrough kwargs
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knownKeys := []string{
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"chat_id", "session_id", "conversation_id",
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"messages", "question", "files",
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"llm_id",
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"pass_all_history_messages", "pass_all_history",
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"legacy", "stream",
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"temperature", "top_p", "frequency_penalty", "presence_penalty", "max_tokens",
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}
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for _, key := range knownKeys {
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delete(rawBody, key)
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}
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kwargs := rawBody
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// Determine stream mode
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streamMode := true
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if req.Stream != nil {
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streamMode = *req.Stream
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}
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if streamMode {
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disableWriteDeadlineForSSE(c)
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c.Header("Content-Type", "text/event-stream")
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c.Header("Cache-Control", "no-cache")
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c.Header("Connection", "keep-alive")
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c.Header("X-Accel-Buffering", "no")
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streamChan := make(chan string, 32)
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reqCtx := c.Request.Context()
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go func() {
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defer close(streamChan)
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_, _ = h.chatSessionService.ChatCompletions(
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reqCtx, userID,
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req.ChatID, sessionID,
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req.Messages, req.Question, req.Files,
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req.LLMID, genConfig, kwargs,
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passAllHistory, req.Legacy,
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true, streamChan,
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)
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}()
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c.Stream(func(w io.Writer) bool {
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data, ok := <-streamChan
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if !ok {
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return false
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}
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c.Writer.Write([]byte(data))
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return true
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})
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} else {
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result, err := h.chatSessionService.ChatCompletions(
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c.Request.Context(), userID,
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req.ChatID, sessionID,
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req.Messages, req.Question, req.Files,
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req.LLMID, genConfig, kwargs,
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passAllHistory, req.Legacy,
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false, nil,
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)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{
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"code": 500,
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"message": err.Error(),
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})
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return
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}
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c.JSON(http.StatusOK, gin.H{
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"code": 0,
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"data": result,
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"message": "",
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})
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}
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}
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func (h *ChatSessionHandler) GetSession(c *gin.Context) {
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user, errorCode, errorMessage := GetUser(c)
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if errorCode != common.CodeSuccess {
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jsonError(c, errorCode, errorMessage)
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return
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}
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userID := user.ID
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chatID, sessionID := c.Param("chat_id"), c.Param("session_id")
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result, code, err := h.chatSessionService.GetSession(userID, chatID, sessionID)
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if err != nil {
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jsonError(c, code, err.Error())
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return
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}
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jsonResponse(c, common.CodeSuccess, result, "success")
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}
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// CreateSession create a session in a dialog
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func (h *ChatSessionHandler) CreateSession(c *gin.Context) {
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user, errorCode, errorMessage := GetUser(c)
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if errorCode != common.CodeSuccess {
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jsonError(c, errorCode, errorMessage)
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return
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}
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userID := strings.TrimSpace(user.ID)
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if userID == "" {
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jsonError(c, common.CodeBadRequest, "user_id is required")
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return
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}
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chatID := strings.TrimSpace(c.Param("chat_id"))
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if chatID == "" {
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jsonError(c, common.CodeBadRequest, "chat_id is required")
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return
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}
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req := map[string]interface{}{}
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if err := json.NewDecoder(c.Request.Body).Decode(&req); err != nil {
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if errors.Is(err, io.EOF) {
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req = map[string]interface{}{}
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} else {
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jsonError(c, common.CodeArgumentError, err.Error())
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return
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}
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}
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if req == nil {
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req = map[string]interface{}{}
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}
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result, code, err := h.chatSessionService.CreateSession(userID, chatID, req)
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if err != nil {
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if code == common.CodeAuthenticationError {
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jsonResponse(c, code, false, err.Error())
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return
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}
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jsonError(c, code, err.Error())
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return
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}
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jsonResponse(c, common.CodeSuccess, result, "success")
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}
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// DeleteSessions delete a session in a dialog
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func (h *ChatSessionHandler) DeleteSessions(c *gin.Context) {
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user, errorCode, errorMessage := GetUser(c)
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if errorCode != common.CodeSuccess {
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jsonError(c, errorCode, errorMessage)
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return
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}
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chatID := strings.TrimSpace(c.Param("chat_id"))
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if chatID == "" {
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jsonError(c, common.CodeBadRequest, "chat_id is required")
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return
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}
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userID := strings.TrimSpace(user.ID)
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if userID == "" {
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jsonError(c, common.CodeBadRequest, "user_id is required")
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return
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}
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req := map[string]interface{}{}
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if err := json.NewDecoder(c.Request.Body).Decode(&req); err != nil {
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if errors.Is(err, io.EOF) {
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req = map[string]interface{}{}
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} else {
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jsonError(c, common.CodeArgumentError, err.Error())
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return
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}
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}
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if req == nil {
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req = map[string]interface{}{}
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}
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result, message, code, err := h.chatSessionService.DeleteSessions(userID, chatID, req)
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if err != nil {
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if code == common.CodeAuthenticationError {
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jsonResponse(c, code, false, err.Error())
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return
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}
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jsonError(c, code, err.Error())
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return
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}
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jsonResponse(c, common.CodeSuccess, result, message)
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}
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func (h *ChatSessionHandler) UpdateSession(c *gin.Context) {
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user, errorCode, errorMessage := GetUser(c)
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if errorCode != common.CodeSuccess {
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jsonError(c, errorCode, errorMessage)
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return
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}
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userID := user.ID
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chatID, sessionID := c.Param("chat_id"), c.Param("session_id")
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req := map[string]any{}
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if err := c.ShouldBindJSON(&req); err != nil {
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if errors.Is(err, io.EOF) {
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jsonError(c, common.CodeArgumentError, "Request body cannot be empty")
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return
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}
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jsonError(c, common.CodeArgumentError, "Invalid request: "+err.Error())
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return
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}
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if len(req) == 0 {
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jsonError(c, common.CodeArgumentError, "Request body cannot be empty")
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return
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}
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result, code, err := h.chatSessionService.UpdateSession(userID, chatID, sessionID, req)
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if err != nil {
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jsonError(c, code, err.Error())
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return
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}
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jsonResponse(c, common.CodeSuccess, result, "success")
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}
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