import logging import uuid from rest_framework import viewsets, status from rest_framework.decorators import action, api_view, permission_classes, parser_classes from rest_framework.response import Response from rest_framework.parsers import MultiPartParser, FormParser, JSONParser from rest_framework.permissions import AllowAny from django.conf import settings from drf_spectacular.utils import extend_schema, OpenApiParameter, OpenApiTypes from .models import TranscriptionTask from .serializers import TranscriptionTaskSerializer, TranscriptionUploadSerializer from .services import AliyunTingwuService logger = logging.getLogger(__name__) @api_view(['POST']) @permission_classes([AllowAny]) def tingwu_callback(request): """ 处理阿里云听悟的回调消息 """ data = request.data logger.info(f"收到听悟回调: {data}") # 1. 处理连通性测试消息 # 格式: {"Code": "0", "Data": {"Test": "..."}, "Message": "success", "RequestId": "..."} if isinstance(data, dict) and 'Data' in data and 'Test' in data['Data']: logger.info("收到听悟连通性测试请求") return Response({'message': 'success'}, status=status.HTTP_200_OK) # 2. 处理任务完成消息 (根据实际文档或后续调试完善) # 通常会包含 TaskId 和 Status # 注意：阿里云听悟回调的结构可能在 Header 或 Body 中不同，需根据实际情况调整 # 这里是一个通用的处理逻辑 task_id = data.get('TaskId') task_status = data.get('Status') if task_id: try: task = TranscriptionTask.objects.filter(task_id=task_id).first() if task: if task_status == 'COMPLETE': logger.info(f"任务 {task_id} 完成，等待下一次查询刷新") # 可以在这里直接调用 get_task_info 刷新数据，但要注意超时 elif task_status == 'FAILED': task.status = TranscriptionTask.Status.FAILED task.error_message = data.get('StatusText', 'Callback reported failure') task.save() else: logger.warning(f"回调收到未知任务ID: {task_id}") except Exception as e: logger.error(f"处理回调异常: {e}") return Response({'message': 'success'}, status=status.HTTP_200_OK) class TranscriptionTaskViewSet(viewsets.ModelViewSet): queryset = TranscriptionTask.objects.all() serializer_class = TranscriptionTaskSerializer parser_classes = (MultiPartParser, FormParser) @extend_schema( request={ 'multipart/form-data': { 'type': 'object', 'properties': { 'file': { 'type': 'string', 'format': 'binary' } }, 'required': ['file'] } }, responses={201: TranscriptionTaskSerializer} ) def create(self, request, *args, **kwargs): """ 上传音频文件并创建听悟转写任务 """ file_obj = request.FILES.get('file') if not file_obj: return Response({'error': '未提供文件'}, status=status.HTTP_400_BAD_REQUEST) service = AliyunTingwuService() if not service.bucket or not service.client: return Response({'error': '阿里云服务未配置'}, status=status.HTTP_503_SERVICE_UNAVAILABLE) try: # 1. 上传文件到 OSS file_extension = file_obj.name.split('.')[-1] file_name = f"transcription/{uuid.uuid4()}.{file_extension}" # 使用服务上传 oss_url = service.upload_to_oss(file_obj, file_name) # 2. 创建数据库记录 task_record = TranscriptionTask.objects.create( file_url=oss_url, status=TranscriptionTask.Status.PENDING ) # 3. 调用听悟接口创建任务 try: tingwu_response = service.create_transcription_task(oss_url) # 兼容处理响应结构，通常为 {"Data": {"TaskId": "...", ...}} if 'Data' in tingwu_response and isinstance(tingwu_response['Data'], dict): task_id = tingwu_response['Data'].get('TaskId') else: task_id = tingwu_response.get('TaskId') if task_id: task_record.task_id = task_id task_record.status = TranscriptionTask.Status.PROCESSING task_record.save() else: task_record.status = TranscriptionTask.Status.FAILED task_record.error_message = "未能获取 TaskId" task_record.save() return Response({'error': '未能获取 TaskId'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR) except Exception as e: task_record.status = TranscriptionTask.Status.FAILED task_record.error_message = str(e) task_record.save() logger.error(f"创建听悟任务失败: {e}") return Response({'error': f"创建听悟任务失败: {str(e)}"}, status=status.HTTP_500_INTERNAL_SERVER_ERROR) serializer = self.get_serializer(task_record) return Response(serializer.data, status=status.HTTP_201_CREATED) except Exception as e: logger.error(f"处理上传请求失败: {e}") return Response({'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR) @action(detail=True, methods=['get']) @extend_schema( parameters=[ OpenApiParameter("id", OpenApiTypes.UUID, OpenApiParameter.PATH, description="Task ID"), ], responses={200: TranscriptionTaskSerializer} ) def refresh_status(self, request, pk=None): """ 刷新任务状态并获取结果 """ task = self.get_object() # 如果任务已经完成或失败，直接返回当前状态 if task.status in [TranscriptionTask.Status.SUCCEEDED, TranscriptionTask.Status.FAILED]: serializer = self.get_serializer(task) return Response(serializer.data) if not task.task_id: return Response({'error': '任务ID不存在'}, status=status.HTTP_400_BAD_REQUEST) service = AliyunTingwuService() try: result = service.get_task_info(task.task_id) # 兼容处理响应结构 {"Data": {"TaskStatus": "...", "Result": ...}} # 有些情况下 SDK 返回的是 JSON 字符串，需要二次解析 if isinstance(result, str): import json try: result = json.loads(result) except: pass data_obj = result.get('Data', result) if not isinstance(data_obj, dict): # 如果 Data 不是字典，可能它本身就是字符串，或者 result 结构更平铺 data_obj = result # 防御性编程：确保 data_obj 是字典 if not isinstance(data_obj, dict): logger.error(f"Unexpected response format: {type(data_obj)} - {data_obj}") return Response({'error': f"Unexpected response format: {type(data_obj)}"}, status=status.HTTP_500_INTERNAL_SERVER_ERROR) task_status = data_obj.get('TaskStatus') # 兼容其他状态字段名 if not task_status: task_status = data_obj.get('Status') if task_status == 'COMPLETE' or task_status == 'COMPLETED' or task_status == 'SUCCEEDED': task.status = TranscriptionTask.Status.SUCCEEDED # 解析结果 task_result = data_obj.get('Result', {}) # 提取逐字稿 sentences = task_result.get('Transcription', {}).get('Sentences', []) full_text = " ".join([s.get('Text', '') for s in sentences]) task.transcription = full_text # 提取总结 # 总结结果结构可能因配置不同而异，这里尝试获取摘要 summarization = task_result.get('Summarization', {}) # 听悟的总结通常在 Summarization.Text 或类似字段 # 如果是章节摘要，可能在 Chapters 中 # 假设是全文摘要 if 'Text' in summarization: task.summary = summarization['Text'] elif 'Headline' in summarization: task.summary = summarization['Headline'] else: # 尝试从章节摘要中提取 chapters = task_result.get('Chapters', []) summary_parts = [] for chapter in chapters: if 'Headline' in chapter: summary_parts.append(chapter['Headline']) if 'Summary' in chapter: summary_parts.append(chapter['Summary']) task.summary = "\n".join(summary_parts) task.save() elif task_status == 'FAILED': task.status = TranscriptionTask.Status.FAILED task.error_message = data_obj.get('TaskStatusText', result.get('Message', 'Unknown error')) task.save() # 其他状态 (PENDING, RUNNING) 不做更改 serializer = self.get_serializer(task) return Response(serializer.data) except Exception as e: logger.error(f"刷新任务状态失败: {e}") return Response({'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)