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88 lines
2.5 KiB
88 lines
2.5 KiB
# -*- coding: utf-8 -*- |
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# |
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import os |
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import uuid |
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from django.core.cache import cache |
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from rest_framework.views import APIView |
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from rest_framework.response import Response |
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from rest_framework import generics, serializers |
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from .const import KEY_CACHE_RESOURCES_ID |
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__all__ = [ |
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'LogTailApi', 'ResourcesIDCacheApi', |
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] |
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class OutputSerializer(serializers.Serializer): |
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output = serializers.CharField() |
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is_end = serializers.BooleanField() |
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mark = serializers.CharField() |
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class LogTailApi(generics.RetrieveAPIView): |
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permission_classes = () |
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buff_size = 1024 * 10 |
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serializer_class = OutputSerializer |
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end = False |
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mark = '' |
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log_path = '' |
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def is_file_finish_write(self): |
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return True |
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def get_log_path(self): |
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raise NotImplementedError() |
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def get_no_file_message(self, request): |
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return 'Not found the log' |
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def filter_line(self, line): |
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""" |
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过滤行，可能替换一些信息 |
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:param line: |
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:return: |
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""" |
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return line |
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def read_from_file(self): |
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with open(self.log_path, 'rt', encoding='utf8') as f: |
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offset = cache.get(self.mark, 0) |
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f.seek(offset) |
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data = f.read(self.buff_size).replace('\n', '\r\n') |
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new_mark = str(uuid.uuid4()) |
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cache.set(new_mark, f.tell(), 5) |
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if data == '' and self.is_file_finish_write(): |
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self.end = True |
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_data = '' |
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for line in data.split('\r\n'): |
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new_line = self.filter_line(line) |
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if line == '': |
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continue |
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_data += new_line + '\r\n' |
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return _data, self.end, new_mark |
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def get(self, request, *args, **kwargs): |
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self.mark = request.query_params.get("mark") or str(uuid.uuid4()) |
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self.log_path = self.get_log_path() |
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if not self.log_path or not os.path.isfile(self.log_path): |
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msg = self.get_no_file_message(self.request) |
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return Response({"data": msg}, status=200) |
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data, end, new_mark = self.read_from_file() |
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return Response({"data": data, 'end': end, 'mark': new_mark}) |
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class ResourcesIDCacheApi(APIView): |
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def post(self, request, *args, **kwargs): |
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spm = str(uuid.uuid4()) |
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resources_id = request.data.get('resources') |
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if resources_id: |
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cache_key = KEY_CACHE_RESOURCES_ID.format(spm) |
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cache.set(cache_key, resources_id, 300) |
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return Response({'spm': spm})
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