mirror of
https://github.com/spalencsar/bearhub.git
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109 lines
3.9 KiB
Python
109 lines
3.9 KiB
Python
import logging
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import os
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import traceback
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from pathlib import Path
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from threading import Thread
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from typing import Dict, List
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import requests
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from bauh.api.abstract.controller import SoftwareManager
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from bauh.api.http import HttpClient
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class CategoriesDownloader(Thread):
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def __init__(self, id_: str, http_client: HttpClient, logger: logging.Logger, manager: SoftwareManager,
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disk_cache: bool, url_categories_file: str, disk_cache_dir: str, categories_path: str):
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super(CategoriesDownloader, self).__init__(daemon=True)
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self.id_ = id_
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self.http_client = http_client
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self.logger = logger
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self.manager = manager
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self.disk_cache = disk_cache
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self.url_categories_file = url_categories_file
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self.disk_cache_dir = disk_cache_dir
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self.categories_path = categories_path
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def _msg(self, msg: str):
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return '{}({}): {}'.format(self.__class__.__name__, self.id_, msg)
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def _read_categories_from_disk(self) -> Dict[str, List[str]]:
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if self.disk_cache and os.path.exists(self.categories_path):
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self.logger.info(self._msg("Reading cached categories from the disk"))
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with open(self.categories_path) as f:
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categories = f.read()
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return self._map_categories(categories)
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return {}
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def _map_categories(self, categories: str) -> Dict[str, List[str]]:
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categories_map = {}
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for l in categories.split('\n'):
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if l:
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data = l.split('=')
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categories_map[data[0]] = [c.strip() for c in data[1].split(',') if c]
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return categories_map
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def _cache_categories_to_disk(self, categories: str):
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self.logger.info(self._msg('Caching categories to the disk'))
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try:
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Path(self.disk_cache_dir).mkdir(parents=True, exist_ok=True)
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with open(self.categories_path, 'w+') as f:
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f.write(categories)
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self.logger.info(self._msg("Categories cached to the disk as '{}'".format(self.categories_path)))
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except:
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self.logger.error(self._msg("Could not cache categories to the disk as '{}'".format(self.categories_path)))
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traceback.print_exc()
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def download_categories(self) -> Dict[str, List[str]]:
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self.logger.info(self._msg('Downloading category definitions from {}'.format(self.url_categories_file)))
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try:
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res = self.http_client.get(self.url_categories_file)
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if res:
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try:
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categories = self._map_categories(res.text)
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self.logger.info(self._msg('Loaded categories for {} applications'.format(len(categories))))
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if self.disk_cache and categories:
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Thread(target=self._cache_categories_to_disk, args=(res.text,), daemon=True).start()
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return categories
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except:
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self.logger.error(self._msg("Could not parse categories definitions"))
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traceback.print_exc()
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else:
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self.logger.info(self._msg('Could not download {}'.format(self.url_categories_file)))
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except requests.exceptions.ConnectionError:
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self.logger.warning(self._msg('The internet connection seems to be off.'))
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return {}
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def _set_categories(self, categories: dict):
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if categories:
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self.logger.info(self._msg("Settings {} categories to {}".format(len(categories), self.manager.__class__.__name__)))
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self.manager.categories = categories
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def _download_and_set(self):
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self._set_categories(self.download_categories())
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def run(self):
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cached = self._read_categories_from_disk()
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if cached:
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self._set_categories(cached)
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Thread(target=self._download_and_set, daemon=True).start()
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else:
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self._download_and_set()
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self.logger.info(self._msg('Finished'))
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