58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
#!/usr/bin/env python3
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# coding=utf-8
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import hashlib
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import re
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import time
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from typing import Optional
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import _hashlib
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import requests
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from praw.models import Submission
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from bulkredditdownloader.exceptions import BulkDownloaderException
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class Resource:
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def __init__(self, source_submission: Submission, url: str, extension: str = None):
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self.source_submission = source_submission
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self.content: Optional[bytes] = None
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self.url = url
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self.hash: Optional[_hashlib.HASH] = None
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self.extension = extension
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if not self.extension:
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self.extension = self._determine_extension()
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@staticmethod
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def retry_download(url: str, wait_time: int) -> Optional[bytes]:
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try:
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response = requests.get(url)
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if response.status_code == 200:
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return response.content
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else:
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raise requests.exceptions.ConnectionError
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except requests.exceptions.ConnectionError:
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time.sleep(wait_time)
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if wait_time < 300:
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return Resource.retry_download(url, wait_time + 60)
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else:
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return None
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def download(self):
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if not self.content:
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content = self.retry_download(self.url, 0)
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if content:
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self.content = content
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self.create_hash()
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else:
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raise BulkDownloaderException('Could not download resource')
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def create_hash(self):
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self.hash = hashlib.md5(self.content)
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def _determine_extension(self) -> str:
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extension_pattern = r'.*(\..{3,5})$'
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match = re.search(extension_pattern, self.url)
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if match:
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return match.group(1)
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