1.0.3

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Python Debugger: FastAPI",
+            "type": "debugpy",
+            "request": "launch",
+            "module": "uvicorn",
+            "args": [
+                "main:app",
+                "--reload"
+            ],
+            "jinja": true
+        }
+    ]
+}

app/api/endpoints/meetings.py

@@ -1,12 +1,14 @@
-from fastapi import APIRouter, HTTPException, UploadFile, File, Form, Depends
+from fastapi import APIRouter, HTTPException, UploadFile, File, Form, Depends, BackgroundTasks
 from app.models.models import Meeting, TranscriptSegment, TranscriptionTaskStatus, CreateMeetingRequest, UpdateMeetingRequest, SpeakerTagUpdateRequest, BatchSpeakerTagUpdateRequest, TranscriptUpdateRequest, BatchTranscriptUpdateRequest
 from app.core.database import get_db_connection
 from app.core.config import BASE_DIR, UPLOAD_DIR, AUDIO_DIR, MARKDOWN_DIR, ALLOWED_EXTENSIONS, ALLOWED_IMAGE_EXTENSIONS, MAX_FILE_SIZE, MAX_IMAGE_SIZE
 from app.services.qiniu_service import qiniu_service
 from app.services.llm_service import LLMService
 from app.services.async_transcription_service import AsyncTranscriptionService
+from app.services.async_llm_service import async_llm_service
 from app.core.auth import get_current_user, get_optional_current_user
 from typing import Optional
+from datetime import datetime
 from pydantic import BaseModel
 import os
 import uuid
@@ -18,6 +20,9 @@ router = APIRouter()
 llm_service = LLMService()
 transcription_service = AsyncTranscriptionService()
 
+# 注意：异步LLM服务需要单独启动worker进程
+# 运行命令：python llm_worker.py
+
 # 请求模型
 class GenerateSummaryRequest(BaseModel):
     user_prompt: Optional[str] = ""
@@ -179,14 +184,15 @@ def create_meeting(meeting_request: CreateMeetingRequest, current_user: dict = D
         
         # Create meeting
         meeting_query = '''
-            INSERT INTO meetings (user_id, title, meeting_time, summary)
-            VALUES (%s, %s, %s, %s)
+            INSERT INTO meetings (user_id, title, meeting_time, summary,created_at)
+            VALUES (%s, %s, %s, %s, %s)
         '''
         cursor.execute(meeting_query, (
             meeting_request.user_id,
             meeting_request.title,
             meeting_request.meeting_time,
-            None  # summary starts as None
+            None,
+            datetime.now().isoformat()
         ))
         
         meeting_id = cursor.lastrowid
@@ -268,42 +274,6 @@ def delete_meeting(meeting_id: int, current_user: dict = Depends(get_current_use
         connection.commit()
         return {"message": "Meeting deleted successfully"}
 
-@router.post("/meetings/{meeting_id}/regenerate-summary")
-def regenerate_summary(meeting_id: int, current_user: dict = Depends(get_current_user)):
-    with get_db_connection() as connection:
-        cursor = connection.cursor(dictionary=True)
-        
-        # Check if meeting exists
-        cursor.execute("SELECT meeting_id FROM meetings WHERE meeting_id = %s", (meeting_id,))
-        if not cursor.fetchone():
-            raise HTTPException(status_code=404, detail="Meeting not found")
-        
-        # For now, return a mock summary
-        # In a real implementation, this would call an AI service
-        mock_summary = """# AI 生成摘要
-
-## 主要议题
-- 项目进度回顾
-- 技术方案讨论
-- 下阶段规划
-
-## 关键决策
-- 采用新的技术架构
-- 调整项目时间节点
-- 分配任务责任
-
-## 后续行动
-- [ ] 完成技术方案文档
-- [ ] 安排下次会议时间
-- [ ] 跟进项目进度"""
-        
-        # Update meeting summary
-        update_query = "UPDATE meetings SET summary = %s WHERE meeting_id = %s"
-        cursor.execute(update_query, (mock_summary, meeting_id))
-        connection.commit()
-        
-        return {"message": "Summary regenerated successfully", "summary": mock_summary}
-
 @router.get("/meetings/{meeting_id}/edit", response_model=Meeting)
 def get_meeting_for_edit(meeting_id: int, current_user: dict = Depends(get_current_user)):
     """获取会议信息用于编辑"""
@@ -834,4 +804,105 @@ def get_summary_detail(meeting_id: int, summary_id: int, current_user: dict = De
     except HTTPException:
         raise
     except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Failed to get summary detail: {str(e)}")
+        raise HTTPException(status_code=500, detail=f"Failed to get summary detail: {str(e)}")
+
+# ==================== 异步LLM总结相关接口 ====================
+
+@router.post("/meetings/{meeting_id}/generate-summary-async")
+def generate_meeting_summary_async(meeting_id: int, request: GenerateSummaryRequest, background_tasks: BackgroundTasks, current_user: dict = Depends(get_current_user)):
+    """生成会议AI总结（异步版本）"""
+    try:
+        # 检查会议是否存在
+        with get_db_connection() as connection:
+            cursor = connection.cursor(dictionary=True)
+            cursor.execute("SELECT meeting_id FROM meetings WHERE meeting_id = %s", (meeting_id,))
+            if not cursor.fetchone():
+                raise HTTPException(status_code=404, detail="Meeting not found")
+        
+        # 启动异步任务
+        task_id = async_llm_service.start_summary_generation(meeting_id, request.user_prompt)
+        
+        # 将真正的处理函数作为后台任务添加
+        background_tasks.add_task(async_llm_service._process_task, task_id)
+        
+        return {
+            "message": "Summary generation task has been accepted.",
+            "task_id": task_id,
+            "status": "pending",
+            "meeting_id": meeting_id
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Failed to start summary generation: {str(e)}")
+
+@router.get("/llm-tasks/{task_id}/status")
+def get_llm_task_status(task_id: str, current_user: dict = Depends(get_current_user)):
+    """获取LLM任务状态（包括进度）"""
+    try:
+        status = async_llm_service.get_task_status(task_id)
+        
+        if status.get('status') == 'not_found':
+            raise HTTPException(status_code=404, detail="Task not found")
+        
+        return status
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Failed to get task status: {str(e)}")
+
+@router.get("/meetings/{meeting_id}/llm-tasks")
+def get_meeting_llm_tasks(meeting_id: int, current_user: dict = Depends(get_current_user)):
+    """获取会议的所有LLM任务历史"""
+    try:
+        # 检查会议是否存在
+        with get_db_connection() as connection:
+            cursor = connection.cursor(dictionary=True)
+            cursor.execute("SELECT meeting_id FROM meetings WHERE meeting_id = %s", (meeting_id,))
+            if not cursor.fetchone():
+                raise HTTPException(status_code=404, detail="Meeting not found")
+        
+        # 获取任务列表
+        tasks = async_llm_service.get_meeting_llm_tasks(meeting_id)
+        
+        return {
+            "meeting_id": meeting_id,
+            "tasks": tasks,
+            "total": len(tasks)
+        }
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Failed to get LLM tasks: {str(e)}")
+
+@router.get("/meetings/{meeting_id}/latest-llm-task")
+def get_latest_llm_task(meeting_id: int, current_user: dict = Depends(get_current_user)):
+    """获取会议最新的LLM任务状态"""
+    try:
+        tasks = async_llm_service.get_meeting_llm_tasks(meeting_id)
+        
+        if not tasks:
+            return {
+                "meeting_id": meeting_id,
+                "task": None,
+                "message": "No LLM tasks found for this meeting"
+            }
+        
+        # 返回最新的任务
+        latest_task = tasks[0]
+        
+        # 如果任务还在进行中，获取实时状态
+        if latest_task['status'] in ['pending', 'processing']:
+            latest_status = async_llm_service.get_task_status(latest_task['task_id'])
+            latest_task.update(latest_status)
+        
+        return {
+            "meeting_id": meeting_id,
+            "task": latest_task
+        }
+        
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Failed to get latest LLM task: {str(e)}")

app/services/async_llm_service.py

@@ -0,0 +1,215 @@
+"""
+异步LLM服务 - 处理会议总结生成的异步任务
+采用FastAPI BackgroundTasks模式
+"""
+import uuid
+import time
+from datetime import datetime
+from typing import Optional, Dict, Any, List
+
+import redis
+from app.core.config import REDIS_CONFIG
+from app.core.database import get_db_connection
+from app.services.llm_service import LLMService
+
+class AsyncLLMService:
+    """异步LLM服务类 - 采用FastAPI BackgroundTasks模式"""
+    
+    def __init__(self):
+        # 确保redis客户端自动解码响应，代码更简洁
+        if 'decode_responses' not in REDIS_CONFIG:
+            REDIS_CONFIG['decode_responses'] = True
+        self.redis_client = redis.Redis(**REDIS_CONFIG)
+        self.llm_service = LLMService()  # 复用现有的同步LLM服务
+        
+    def start_summary_generation(self, meeting_id: int, user_prompt: str = "") -> str:
+        """
+        创建异步总结任务，任务的执行将由外部（如API层的BackgroundTasks）触发。
+        
+        Args:
+            meeting_id: 会议ID
+            user_prompt: 用户额外提示词
+            
+        Returns:
+            str: 任务ID
+        """
+        try:
+            task_id = str(uuid.uuid4())
+            
+            # 在数据库中创建任务记录
+            self._save_task_to_db(task_id, meeting_id, user_prompt)
+
+            # 将任务详情存入Redis，用于快速查询状态
+            current_time = datetime.now().isoformat()
+            task_data = {
+                'task_id': task_id,
+                'meeting_id': str(meeting_id),
+                'user_prompt': user_prompt,
+                'status': 'pending',
+                'progress': '0',
+                'created_at': current_time,
+                'updated_at': current_time
+            }
+            self.redis_client.hset(f"llm_task:{task_id}", mapping=task_data)
+            self.redis_client.expire(f"llm_task:{task_id}", 86400)
+            
+            print(f"LLM summary task created: {task_id} for meeting: {meeting_id}")
+            return task_id
+            
+        except Exception as e:
+            print(f"Error starting summary generation: {e}")
+            raise e
+
+    def _process_task(self, task_id: str):
+        """
+        处理单个异步任务的函数，设计为由BackgroundTasks调用。
+        """
+        print(f"Background task started for LLM task: {task_id}")
+        try:
+            # 从Redis获取任务数据
+            task_data = self.redis_client.hgetall(f"llm_task:{task_id}")
+            if not task_data:
+                print(f"Error: Task {task_id} not found in Redis for processing.")
+                return
+
+            meeting_id = int(task_data['meeting_id'])
+            user_prompt = task_data.get('user_prompt', '')
+
+            # 1. 更新状态为processing
+            self._update_task_status_in_redis(task_id, 'processing', 10, message="任务已开始...")
+
+            # 2. 获取会议转录内容
+            self._update_task_status_in_redis(task_id, 'processing', 30, message="获取会议转录内容...")
+            transcript_text = self.llm_service._get_meeting_transcript(meeting_id)
+            if not transcript_text:
+                raise Exception("无法获取会议转录内容")
+
+            # 3. 构建提示词
+            self._update_task_status_in_redis(task_id, 'processing', 40, message="准备AI提示词...")
+            full_prompt = self.llm_service._build_prompt(transcript_text, user_prompt)
+
+            # 4. 调用LLM API
+            self._update_task_status_in_redis(task_id, 'processing', 50, message="AI正在分析会议内容...")
+            summary_content = self.llm_service._call_llm_api(full_prompt)
+            if not summary_content:
+                raise Exception("LLM API调用失败或返回空内容")
+
+            # 5. 保存结果到主表
+            self._update_task_status_in_redis(task_id, 'processing', 95, message="保存总结结果...")
+            self.llm_service._save_summary_to_db(meeting_id, summary_content, user_prompt)
+
+            # 6. 任务完成
+            self._update_task_in_db(task_id, 'completed', 100, result=summary_content)
+            self._update_task_status_in_redis(task_id, 'completed', 100, result=summary_content)
+            print(f"Task {task_id} completed successfully")
+
+        except Exception as e:
+            error_msg = str(e)
+            print(f"Task {task_id} failed: {error_msg}")
+            # 更新失败状态
+            self._update_task_in_db(task_id, 'failed', 0, error_message=error_msg)
+            self._update_task_status_in_redis(task_id, 'failed', 0, error_message=error_msg)
+
+    # --- 状态查询和数据库操作方法 ---
+
+    def get_task_status(self, task_id: str) -> Dict[str, Any]:
+        """获取任务状态"""
+        try:
+            task_data = self.redis_client.hgetall(f"llm_task:{task_id}")
+            if not task_data:
+                task_data = self._get_task_from_db(task_id)
+                if not task_data:
+                    return {'task_id': task_id, 'status': 'not_found', 'error_message': 'Task not found'}
+            
+            return {
+                'task_id': task_id,
+                'status': task_data.get('status', 'unknown'),
+                'progress': int(task_data.get('progress', 0)),
+                'meeting_id': int(task_data.get('meeting_id', 0)),
+                'created_at': task_data.get('created_at'),
+                'updated_at': task_data.get('updated_at'),
+                'result': task_data.get('result'),
+                'error_message': task_data.get('error_message')
+            }
+        except Exception as e:
+            print(f"Error getting task status: {e}")
+            return {'task_id': task_id, 'status': 'error', 'error_message': str(e)}
+
+    def get_meeting_llm_tasks(self, meeting_id: int) -> List[Dict[str, Any]]:
+        """获取会议的所有LLM任务"""
+        try:
+            with get_db_connection() as connection:
+                cursor = connection.cursor(dictionary=True)
+                query = "SELECT task_id, status, progress, user_prompt, created_at, completed_at, error_message FROM llm_tasks WHERE meeting_id = %s ORDER BY created_at DESC"
+                cursor.execute(query, (meeting_id,))
+                tasks = cursor.fetchall()
+                for task in tasks:
+                    if task.get('created_at'): task['created_at'] = task['created_at'].isoformat()
+                    if task.get('completed_at'): task['completed_at'] = task['completed_at'].isoformat()
+                return tasks
+        except Exception as e:
+            print(f"Error getting meeting LLM tasks: {e}")
+            return []
+
+    def _update_task_status_in_redis(self, task_id: str, status: str, progress: int, message: str = None, result: str = None, error_message: str = None):
+        """更新Redis中的任务状态"""
+        try:
+            update_data = {
+                'status': status,
+                'progress': str(progress),
+                'updated_at': datetime.now().isoformat()
+            }
+            if message: update_data['message'] = message
+            if result: update_data['result'] = result
+            if error_message: update_data['error_message'] = error_message
+            self.redis_client.hset(f"llm_task:{task_id}", mapping=update_data)
+        except Exception as e:
+            print(f"Error updating task status in Redis: {e}")
+
+    def _save_task_to_db(self, task_id: str, meeting_id: int, user_prompt: str):
+        """保存任务到数据库"""
+        try:
+            with get_db_connection() as connection:
+                cursor = connection.cursor()
+                insert_query = "INSERT INTO llm_tasks (task_id, meeting_id, user_prompt, status, progress, created_at) VALUES (%s, %s, %s, 'pending', 0, NOW())"
+                cursor.execute(insert_query, (task_id, meeting_id, user_prompt))
+                connection.commit()
+        except Exception as e:
+            print(f"Error saving task to database: {e}")
+            raise
+
+    def _update_task_in_db(self, task_id: str, status: str, progress: int, result: str = None, error_message: str = None):
+        """更新数据库中的任务状态"""
+        try:
+            with get_db_connection() as connection:
+                cursor = connection.cursor()
+                params = [status, progress, error_message, task_id]
+                if status == 'completed':
+                    query = "UPDATE llm_tasks SET status = %s, progress = %s, error_message = %s, result = %s, completed_at = NOW() WHERE task_id = %s"
+                    params.insert(2, result)
+                else:
+                    query = "UPDATE llm_tasks SET status = %s, progress = %s, error_message = %s WHERE task_id = %s"
+                
+                cursor.execute(query, tuple(params))
+                connection.commit()
+        except Exception as e:
+            print(f"Error updating task in database: {e}")
+
+    def _get_task_from_db(self, task_id: str) -> Optional[Dict[str, str]]:
+        """从数据库获取任务信息"""
+        try:
+            with get_db_connection() as connection:
+                cursor = connection.cursor(dictionary=True)
+                query = "SELECT * FROM llm_tasks WHERE task_id = %s"
+                cursor.execute(query, (task_id,))
+                task = cursor.fetchone()
+                if task:
+                    # 确保所有字段都是字符串，以匹配Redis的行为
+                    return {k: v.isoformat() if isinstance(v, datetime) else str(v) for k, v in task.items()}
+                return None
+        except Exception as e:
+            print(f"Error getting task from database: {e}")
+            return None
+
+# 创建全局实例
+async_llm_service = AsyncLLMService()

app/services/async_transcription_service.py

@@ -56,6 +56,7 @@ class AsyncTranscriptionService:
             business_task_id = str(uuid.uuid4())
             
             # 在Redis中存储任务映射
+            current_time = datetime.now().isoformat()
             task_data = {
                 'business_task_id': business_task_id,
                 'paraformer_task_id': paraformer_task_id,
@@ -63,8 +64,8 @@ class AsyncTranscriptionService:
                 'file_url': file_url,
                 'status': 'pending',
                 'progress': '0',
-                'created_at': datetime.now().isoformat(),
-                'updated_at': datetime.now().isoformat()
+                'created_at': current_time,
+                'updated_at': current_time
             }
             
             # 存储到Redis，过期时间24小时
@@ -72,7 +73,7 @@ class AsyncTranscriptionService:
             self.redis_client.expire(f"task:{business_task_id}", 86400)
             
             # 在数据库中创建任务记录
-            self._save_task_to_db(business_task_id, meeting_id, audio_file_path)
+            self._save_task_to_db(business_task_id, paraformer_task_id, meeting_id, audio_file_path)
             
             print(f"Transcription task created: {business_task_id}")
             return business_task_id
@@ -91,68 +92,106 @@ class AsyncTranscriptionService:
         Returns:
             Dict: 任务状态信息
         """
+        task_data = None
+        current_status = 'failed'
+        progress = 0
+        error_message = "An unknown error occurred."
+
         try:
-            # 从Redis获取任务信息
-            task_data = self.redis_client.hgetall(f"task:{business_task_id}")
-            if not task_data:
-                # 尝试从数据库获取
-                task_data = self._get_task_from_db(business_task_id)
-                if not task_data:
-                    raise Exception("Task not found")
-            
+            # 1. 获取任务数据（优先Redis，回源DB）
+            task_data = self._get_task_data(business_task_id)
             paraformer_task_id = task_data['paraformer_task_id']
-            
-            # 查询Paraformer任务状态
-            paraformer_response = Transcription.fetch(task=paraformer_task_id)
-            
-            if paraformer_response.status_code != HTTPStatus.OK:
-                print(f"Failed to fetch task status: {paraformer_response.message}")
-                current_status = 'failed'
-                progress = 0
-                error_message = paraformer_response.message
-            else:
-                # 映射Paraformer状态到业务状态
+
+            # 2. 查询外部API获取状态
+            try:
+                paraformer_response = Transcription.fetch(task=paraformer_task_id)
+                if paraformer_response.status_code != HTTPStatus.OK:
+                    raise Exception(f"Failed to fetch task status from provider: {paraformer_response.message}")
+                
                 paraformer_status = paraformer_response.output.task_status
                 current_status = self._map_paraformer_status(paraformer_status)
                 progress = self._calculate_progress(paraformer_status)
-                error_message = None
-                
-                # 如果任务完成，处理结果
-                if current_status == 'completed' and paraformer_response.output.get('results'):
+                error_message = None #执行成功，清除初始状态
+
+            except Exception as e:
+                current_status = 'failed'
+                progress = 0
+                error_message = f"Error fetching status from provider: {e}"
+                # 直接进入finally块更新状态后返回
+                return
+
+            # 3. 如果任务完成，处理结果
+            if current_status == 'completed' and paraformer_response.output.get('results'):
+                try:
                     self._process_transcription_result(
                         business_task_id, 
                         int(task_data['meeting_id']), 
                         paraformer_response.output
                     )
+                except Exception as e:
+                    current_status = 'failed'
+                    progress = 100 # 进度为100，但状态是失败
+                    error_message = f"Error processing transcription result: {e}"
+                    print(error_message)
+
+        except Exception as e:
+            error_message = f"Error getting task status: {e}"
+            print(error_message)
+            current_status = 'failed'
+            progress = 0
+        
+        finally:
+            # 4. 更新Redis和数据库状态
+            updated_at = datetime.now().isoformat()
             
-            # 更新Redis中的状态
+            # 更新Redis
             update_data = {
                 'status': current_status,
                 'progress': str(progress),
-                'updated_at': datetime.now().isoformat()
+                'updated_at': updated_at
             }
             if error_message:
                 update_data['error_message'] = error_message
-            
             self.redis_client.hset(f"task:{business_task_id}", mapping=update_data)
-            
-            # 更新数据库中的状态
+
+            # 更新数据库
             self._update_task_status_in_db(business_task_id, current_status, progress, error_message)
-            
-            return {
+
+            # 5. 构造并返回最终结果
+            result = {
                 'task_id': business_task_id,
                 'status': current_status,
                 'progress': progress,
-                'meeting_id': int(task_data['meeting_id']),
-                'created_at': task_data.get('created_at'),
-                'updated_at': update_data['updated_at'],
-                'error_message': error_message
+                'error_message': error_message,
+                'updated_at': updated_at,
+                'meeting_id': None,
+                'created_at': None,
             }
+            if task_data:
+                result['meeting_id'] = int(task_data['meeting_id'])
+                result['created_at'] = task_data.get('created_at')
             
-        except Exception as e:
-            print(f"Error getting task status: {e}")
-            raise e
-    
+            return result
+
+    def _get_task_data(self, business_task_id: str) -> Dict[str, Any]:
+        """从Redis或数据库获取任务数据"""
+        # 尝试从Redis获取
+        task_data_bytes = self.redis_client.hgetall(f"task:{business_task_id}")
+        if task_data_bytes and task_data_bytes.get(b'paraformer_task_id'):
+            # Redis返回的是bytes，需要解码
+            return {k.decode('utf-8'): v.decode('utf-8') for k, v in task_data_bytes.items()}
+
+        # 如果Redis没有，从数据库回源
+        task_data_from_db = self._get_task_from_db(business_task_id)
+        if not task_data_from_db or not task_data_from_db.get('paraformer_task_id'):
+            raise Exception("Task not found in DB or paraformer_task_id is missing")
+        
+        # 将从DB获取的数据缓存回Redis
+        self.redis_client.hset(f"task:{business_task_id}", mapping=task_data_from_db)
+        self.redis_client.expire(f"task:{business_task_id}", 86400)
+        
+        return task_data_from_db
+
     def get_meeting_transcription_status(self, meeting_id: int) -> Optional[Dict[str, Any]]:
         """
         获取会议的转录任务状态
@@ -187,11 +226,9 @@ class AsyncTranscriptionService:
                 # 如果任务还在进行中，获取最新状态
                 if task_record['status'] in ['pending', 'processing']:
                     try:
-                        latest_status = self.get_task_status(task_record['task_id'])
-                        return latest_status
-                    except Exception:
-                        # 如果获取最新状态失败，返回数据库中的状态
-                        pass
+                        return self.get_task_status(task_record['task_id'])
+                    except Exception as e:
+                        print(f"Failed to get latest task status for meeting {meeting_id}, returning DB status. Error: {e}")
                 
                 return {
                     'task_id': task_record['task_id'],
@@ -220,37 +257,28 @@ class AsyncTranscriptionService:
     def _calculate_progress(self, paraformer_status: str) -> int:
         """根据Paraformer状态计算进度"""
         progress_mapping = {
-            'PENDING': 0,
+            'PENDING': 10,
             'RUNNING': 50,
             'SUCCEEDED': 100,
             'FAILED': 0
         }
         return progress_mapping.get(paraformer_status, 0)
     
-    def _save_task_to_db(self, business_task_id: str, meeting_id: int, audio_file_path: str):
+    def _save_task_to_db(self, business_task_id: str, paraformer_task_id: str, meeting_id: int, audio_file_path: str):
         """保存任务记录到数据库"""
         try:
             with get_db_connection() as connection:
                 cursor = connection.cursor()
                 
-                # 更新audio_files表关联task_id
-                update_audio_query = """
-                    UPDATE audio_files 
-                    SET task_id = %s 
-                    WHERE meeting_id = %s AND file_path = %s
-                """
-                cursor.execute(update_audio_query, (business_task_id, meeting_id, audio_file_path))
-                
                 # 插入转录任务记录
                 insert_task_query = """
-                    INSERT INTO transcript_tasks (task_id, meeting_id, status, progress, created_at)
-                    VALUES (%s, %s, 'pending', 0, NOW())
+                    INSERT INTO transcript_tasks (task_id, paraformer_task_id, meeting_id, status, progress, created_at)
+                    VALUES (%s, %s, %s, 'pending', 0, NOW())
                 """
-                cursor.execute(insert_task_query, (business_task_id, meeting_id))
+                cursor.execute(insert_task_query, (business_task_id, paraformer_task_id, meeting_id))
                 
                 connection.commit()
-                cursor.close()  # 明确关闭游标
-                print(f"Task record saved to database: {business_task_id}")
+                cursor.close()
                 
         except Exception as e:
             print(f"Error saving task to database: {e}")
@@ -262,6 +290,7 @@ class AsyncTranscriptionService:
             with get_db_connection() as connection:
                 cursor = connection.cursor()
                 
+                params = [status, progress, error_message, business_task_id]
                 if status == 'completed':
                     update_query = """
                         UPDATE transcript_tasks 
@@ -275,9 +304,9 @@ class AsyncTranscriptionService:
                         WHERE task_id = %s
                     """
                 
-                cursor.execute(update_query, (status, progress, error_message, business_task_id))
+                cursor.execute(update_query, tuple(params))
                 connection.commit()
-                cursor.close()  # 明确关闭游标
+                cursor.close()
                 
         except Exception as e:
             print(f"Error updating task status in database: {e}")
@@ -289,21 +318,22 @@ class AsyncTranscriptionService:
                 cursor = connection.cursor(dictionary=True)
                 
                 query = """
-                    SELECT tt.task_id as business_task_id, tt.meeting_id, tt.status
+                    SELECT tt.task_id as business_task_id, tt.paraformer_task_id, tt.meeting_id, tt.status, tt.created_at
                     FROM transcript_tasks tt
                     WHERE tt.task_id = %s
                 """
                 cursor.execute(query, (business_task_id,))
                 result = cursor.fetchone()
-                cursor.close()  # 明确关闭游标
+                cursor.close()
                 
                 if result:
-                    # 转换为字符串格式以保持一致性
+                    # 转换为与Redis一致的字符串格式
                     return {
                         'business_task_id': result['business_task_id'],
-                        'paraformer_task_id': '',  # 数据库中没有存储，需要从Redis获取
+                        'paraformer_task_id': result['paraformer_task_id'],
                         'meeting_id': str(result['meeting_id']),
-                        'status': result['status']
+                        'status': result['status'],
+                        'created_at': result['created_at'].isoformat() if result['created_at'] else None
                     }
                 return None
                 
@@ -312,11 +342,13 @@ class AsyncTranscriptionService:
             return None
     
     def _process_transcription_result(self, business_task_id: str, meeting_id: int, paraformer_output: Any):
-        """处理转录结果"""
+        """
+        处理转录结果.
+        如果处理失败，此函数会抛出异常.
+        """
         try:
             if not paraformer_output.get('results'):
-                print("No transcription results found in the response.")
-                return
+                raise Exception("No transcription results found in the provider response.")
             
             transcription_url = paraformer_output['results'][0]['transcription_url']
             print(f"Fetching transcription from URL: {transcription_url}")
@@ -331,7 +363,9 @@ class AsyncTranscriptionService:
             print(f"Transcription result processed for task: {business_task_id}")
             
         except Exception as e:
-            print(f"Error processing transcription result: {e}")
+            # 记录具体错误并重新抛出，以便上层捕获
+            print(f"Error processing transcription result for task {business_task_id}: {e}")
+            raise
     
     def _save_segments_to_db(self, data: dict, meeting_id: int):
         """保存转录分段到数据库"""
@@ -368,8 +402,9 @@ class AsyncTranscriptionService:
                 '''
                 cursor.executemany(insert_query, segments_to_insert)
                 connection.commit()
-                cursor.close()  # 明确关闭游标
+                cursor.close()
                 print(f"Successfully saved {len(segments_to_insert)} segments to the database for meeting_id: {meeting_id}")
                 
         except Exception as e:
-            print(f"Database error when saving segments: {e}")
+            print(f"Database error when saving segments: {e}")
+            raise

main.py

@@ -4,27 +4,15 @@ from fastapi.middleware.cors import CORSMiddleware
 from fastapi.staticfiles import StaticFiles
 from app.api.endpoints import auth, users, meetings
 from app.core.config import UPLOAD_DIR, API_CONFIG, MAX_FILE_SIZE
+from app.services.async_llm_service import async_llm_service
 import os
 
 app = FastAPI(
     title="iMeeting API",
     description="智慧会议系统API",
-    version="1.0.0"
+    version="1.0.2"
 )
 
-# 添加请求体大小检查中间件
-@app.middleware("http")
-async def check_content_size(request: Request, call_next):
-    # 检查Content-Length头
-    content_length = request.headers.get("content-length")
-    if content_length:
-        content_length = int(content_length)
-        if content_length > MAX_FILE_SIZE:
-            raise HTTPException(status_code=413, detail=f"Request entity too large. Maximum size is {MAX_FILE_SIZE//1024//1024}MB")
-    
-    response = await call_next(request)
-    return response
-
 # 添加CORS中间件
 app.add_middleware(
     CORSMiddleware,
@@ -65,8 +53,4 @@ if __name__ == "__main__":
         limit_max_requests=1000,
         timeout_keep_alive=30,
         reload=True,
-        # 设置更大的请求体限制以支持音频文件上传
-        h11_max_incomplete_event_size=104857600,  # 100MB
-        
-    
     )

requirements-prod.txt

@@ -1,58 +1,17 @@
-aiohappyeyeballs==2.6.1
-aiohttp==3.12.15
-aiosignal==1.4.0
-annotated-types==0.7.0
-anyio==3.7.1
-async-timeout==5.0.1
-attrs==25.3.0
-bcrypt==4.3.0
-certifi==2025.8.3
-cffi==1.17.1
-charset-normalizer==3.4.3
-click==8.1.8
-cryptography==45.0.6
-dashscope==1.24.1
-distro==1.9.0
-dnspython==2.7.0
-ecdsa==0.19.1
-email_validator==2.2.0
-exceptiongroup==1.3.0
-fastapi==0.104.1
-frozenlist==1.7.0
-h11==0.16.0
-httpcore==1.0.9
-httptools==0.6.4
-httpx==0.28.1
-idna==3.10
-jiter==0.10.0
-multidict==6.6.4
-mysql-connector-python==8.2.0
-openai==1.99.9
-passlib==1.7.4
-propcache==0.3.2
-protobuf==4.21.12
-pyasn1==0.6.1
-pycparser==2.22
-pydantic==2.5.0
-pydantic_core==2.14.1
-PyJWT==2.10.1
-python-dotenv==1.1.1
-python-jose==3.5.0
-python-multipart==0.0.6
-PyYAML==6.0.2
-qiniu==7.17.0
-redis==6.4.0
-requests==2.32.4
-rsa==4.9.1
-six==1.17.0
-sniffio==1.3.1
-starlette==0.27.0
-tqdm==4.67.1
-typing_extensions==4.14.1
-urllib3==2.5.0
-uvicorn==0.24.0
-uvloop==0.21.0
-watchfiles==1.1.0
-websocket-client==1.8.0
-websockets==15.0.1
-yarl==1.20.1
+# Core Application Framework
+fastapi
+uvicorn
+
+# Database & Cache
+mysql-connector-python
+redis
+
+# Services & External APIs
+requests
+dashscope
+PyJWT
+qiniu
+
+# Validation & Forms
+email-validator
+python-multipart

test/test_create_task.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+"""
+创建一个新的测试任务
+"""
+import sys
+import os
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+from app.services.async_llm_service import AsyncLLMService
+
+# 创建服务实例
+service = AsyncLLMService()
+
+# 创建测试任务
+meeting_id = 38
+user_prompt = "请重点关注决策事项和待办任务"
+
+print("创建新任务...")
+task_id = service.start_summary_generation(meeting_id, user_prompt)
+print(f"✅ 任务创建成功: {task_id}")
+
+# 获取任务状态
+status = service.get_task_status(task_id)
+print(f"任务状态: {status}")

test/test_redis_llm.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+"""
+测试Redis连接和LLM任务队列
+"""
+import sys
+import os
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+import redis
+from app.core.config import REDIS_CONFIG
+
+# 连接Redis
+redis_client = redis.Redis(**REDIS_CONFIG)
+
+try:
+    # 测试连接
+    redis_client.ping()
+    print("✅ Redis连接成功")
+    
+    # 检查任务队列
+    queue_length = redis_client.llen("llm_task_queue")
+    print(f"📋 当前任务队列长度: {queue_length}")
+    
+    # 检查所有LLM任务
+    keys = redis_client.keys("llm_task:*")
+    print(f"📊 当前存在的LLM任务: {len(keys)} 个")
+    
+    for key in keys:
+        task_data = redis_client.hgetall(key)
+        # key可能是bytes或str
+        if isinstance(key, bytes):
+            task_id = key.decode('utf-8').replace('llm_task:', '')
+        else:
+            task_id = key.replace('llm_task:', '')
+            
+        # 获取状态和进度
+        status = task_data.get(b'status', task_data.get('status', 'unknown'))
+        if isinstance(status, bytes):
+            status = status.decode('utf-8')
+            
+        progress = task_data.get(b'progress', task_data.get('progress', '0'))
+        if isinstance(progress, bytes):
+            progress = progress.decode('utf-8')
+            
+        print(f"  - 任务 {task_id[:8]}... 状态: {status}, 进度: {progress}%")
+        
+        # 如果任务是pending，重新推送到队列
+        if status == 'pending':
+            print(f"    🔄 发现pending任务，重新推送到队列...")
+            redis_client.lpush("llm_task_queue", task_id)
+            print(f"    ✅ 任务 {task_id[:8]}... 已重新推送到队列")
+        
+except redis.ConnectionError as e:
+    print(f"❌ Redis连接失败: {e}")
+except Exception as e:
+    print(f"❌ 错误: {e}")
+    import traceback
+    traceback.print_exc()

test/test_worker_thread.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+"""
+测试worker线程是否正常工作
+"""
+import sys
+import os
+import time
+import threading
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+from app.services.async_llm_service import AsyncLLMService
+
+# 创建服务实例
+service = AsyncLLMService()
+
+# 直接调用处理任务方法测试
+print("测试直接调用_process_tasks方法...")
+
+# 设置worker_running为True
+service.worker_running = True
+
+# 创建线程并启动
+thread = threading.Thread(target=service._process_tasks)
+thread.daemon = False  # 不设置为daemon，确保能看到输出
+thread.start()
+
+print(f"线程是否活动: {thread.is_alive()}")
+print("等待5秒...")
+
+# 等待一段时间
+time.sleep(5)
+
+# 停止worker
+service.worker_running = False
+thread.join(timeout=10)
+
+print("测试完成")