add fix-cover task
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186
movies/management/commands/fix-cover.py
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186
movies/management/commands/fix-cover.py
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from django.core.management.base import BaseCommand
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from django.core.files.uploadedfile import SimpleUploadedFile
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from common.scraper import *
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class DoubanPatcherMixin:
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@classmethod
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def download_page(cls, url, headers):
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url = cls.get_effective_url(url)
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r = None
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error = 'DoubanScrapper: error occured when downloading ' + url
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content = None
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def get(url, timeout):
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nonlocal r
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# print('Douban GET ' + url)
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try:
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r = requests.get(url, timeout=timeout)
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except Exception as e:
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r = requests.Response()
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r.status_code = f"Exception when GET {url} {e}" + url
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# print('Douban CODE ' + str(r.status_code))
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return r
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def check_content():
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nonlocal r, error, content
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content = None
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if r.status_code == 200:
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content = r.content.decode('utf-8')
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if content.find('关于豆瓣') == -1:
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content = None
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error = error + 'Content not authentic' # response is garbage
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elif re.search('不存在[^<]+</title>', content, re.MULTILINE):
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content = None
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error = error + 'Not found or hidden by Douban'
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else:
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error = error + str(r.status_code)
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def fix_wayback_links():
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nonlocal content
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# fix links
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content = re.sub(r'href="http[^"]+http', r'href="http', content)
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# https://img9.doubanio.com/view/subject/{l|m|s}/public/s1234.jpg
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content = re.sub(r'src="[^"]+/(s\d+\.\w+)"',
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r'src="https://img9.doubanio.com/view/subject/m/public/\1"', content)
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# https://img9.doubanio.com/view/photo/s_ratio_poster/public/p2681329386.jpg
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# https://img9.doubanio.com/view/photo/{l|m|s}/public/p1234.webp
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content = re.sub(r'src="[^"]+/(p\d+\.\w+)"',
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r'src="https://img9.doubanio.com/view/photo/m/public/\1"', content)
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# Wayback Machine: get latest available
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def wayback():
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nonlocal r, error, content
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error = error + '\nWayback: '
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get('http://archive.org/wayback/available?url=' + url, 10)
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if r.status_code == 200:
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w = r.json()
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if w['archived_snapshots'] and w['archived_snapshots']['closest']:
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get(w['archived_snapshots']['closest']['url'], 10)
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check_content()
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if content is not None:
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fix_wayback_links()
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else:
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error = error + 'No snapshot available'
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else:
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error = error + str(r.status_code)
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# Wayback Machine: guess via CDX API
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def wayback_cdx():
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nonlocal r, error, content
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error = error + '\nWayback: '
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get('http://web.archive.org/cdx/search/cdx?url=' + url, 10)
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if r.status_code == 200:
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dates = re.findall(r'[^\s]+\s+(\d+)\s+[^\s]+\s+[^\s]+\s+\d+\s+[^\s]+\s+\d{5,}',
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r.content.decode('utf-8'))
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# assume snapshots whose size >9999 contain real content, use the latest one of them
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if len(dates) > 0:
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get('http://web.archive.org/web/' + dates[-1] + '/' + url, 10)
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check_content()
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if content is not None:
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fix_wayback_links()
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else:
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error = error + 'No snapshot available'
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else:
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error = error + str(r.status_code)
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def latest():
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nonlocal r, error, content
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if settings.SCRAPERAPI_KEY is None:
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error = error + '\nDirect: '
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get(url, 60)
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else:
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error = error + '\nScraperAPI: '
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get(f'http://api.scraperapi.com?api_key={settings.SCRAPERAPI_KEY}&url={url}', 60)
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check_content()
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wayback_cdx()
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if content is None:
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latest()
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if content is None:
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logger.error(error)
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content = '<html />'
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return html.fromstring(content)
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@classmethod
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def download_image(cls, url, item_url=None):
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raw_img = None
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ext = None
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dl_url = url
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if settings.SCRAPERAPI_KEY is not None:
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dl_url = f'http://api.scraperapi.com?api_key={settings.SCRAPERAPI_KEY}&url={url}'
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try:
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img_response = requests.get(dl_url, timeout=90)
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if img_response.status_code == 200:
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raw_img = img_response.content
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img = Image.open(BytesIO(raw_img))
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img.load() # corrupted image will trigger exception
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content_type = img_response.headers.get('Content-Type')
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ext = filetype.get_type(mime=content_type.partition(';')[0].strip()).extension
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else:
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logger.error(f"Douban: download image failed {img_response.status_code} {dl_url} {item_url}")
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# raise RuntimeError(f"Douban: download image failed {img_response.status_code} {dl_url}")
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except Exception as e:
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raw_img = None
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ext = None
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logger.error(f"Douban: download image failed {e} {dl_url} {item_url}")
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if raw_img is None and settings.SCRAPERAPI_KEY is not None:
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try:
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img_response = requests.get(dl_url, timeout=90)
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if img_response.status_code == 200:
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raw_img = img_response.content
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img = Image.open(BytesIO(raw_img))
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img.load() # corrupted image will trigger exception
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content_type = img_response.headers.get('Content-Type')
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ext = filetype.get_type(mime=content_type.partition(';')[0].strip()).extension
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else:
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logger.error(f"Douban: download image failed {img_response.status_code} {dl_url} {item_url}")
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except Exception as e:
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raw_img = None
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ext = None
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logger.error(f"Douban: download image failed {e} {dl_url} {item_url}")
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return raw_img, ext
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class DoubanMoviePatcher(DoubanPatcherMixin, AbstractScraper):
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site_name = SourceSiteEnum.DOUBAN.value
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host = 'movie.douban.com'
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data_class = Movie
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form_class = MovieForm
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regex = re.compile(r"https://movie\.douban\.com/subject/\d+/{0,1}")
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def scrape(self, url):
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headers = DEFAULT_REQUEST_HEADERS.copy()
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headers['Host'] = self.host
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content = self.download_page(url, headers)
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img_url_elem = content.xpath("//img[@rel='v:image']/@src")
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img_url = img_url_elem[0].strip() if img_url_elem else None
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raw_img, ext = self.download_image(img_url, url)
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return raw_img, ext
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class Command(BaseCommand):
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help = 'fix cover image'
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def add_arguments(self, parser):
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parser.add_argument('threadId', type=int, help='% 8')
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def handle(self, *args, **options):
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t = int(options['threadId'])
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for m in Movie.objects.filter(cover='movie/default.svg', source_site='douban'):
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if m.id % 8 == t:
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print(f'Re-fetching {m.source_url}')
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try:
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raw_img, img_ext = DoubanMoviePatcher.scrape(m.source_url)
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if img_ext is not None:
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m.cover = SimpleUploadedFile('temp.' + img_ext, raw_img)
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m.save()
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print(f'Saved {m.source_url}')
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else:
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print(f'Skipped {m.source_url}')
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except Exception as e:
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print(e)
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