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