def __init__(self, *args, **kw):
# get extra parameters of scraper launch cmd
SCRAPED_DOMAIN = kw.pop('SCRAPED_DOMAIN', None)
START_URL = kw.pop('START_URL', None)
LOCAL_DOMAIN = kw.pop('LOCAL_DOMAIN', None)
if START_URL:
self.start_urls = [START_URL]
if SCRAPED_DOMAIN:
if SCRAPED_DOMAIN.strip('.')[0] == 'www':
self.allowed_domains = [SCRAPED_DOMAIN,
SCRAPED_DOMAIN.replace('www.', '')]
else:
self.allowed_domains = [SCRAPED_DOMAIN,
'www.%s' % SCRAPED_DOMAIN]
if LOCAL_DOMAIN is None:
raise GrabberSpiderError('No local_url is specified for job')
super(GrabberSpider, self).__init__(*args, **kw)
log.msg('Init SQL alchemy engine', level=log.DEBUG)
engine = engine_from_config(WEB_APP_SETTINGS, 'sqlalchemy.')
conn = engine.connect()
self.dbsession = Session(bind=conn)
# patch orm objects to use this local session object
Base.metadata.create_all(engine) # while use creating DB here
if not self.check_local_domain_uniqueness(LOCAL_DOMAIN):
raise GrabberSpiderError('%s is already used in db')
q = self.dbsession.query(WebSite)\
.filter(WebSite.original_url == SCRAPED_DOMAIN)
website = q.first()
if website is None:
website = WebSite(original_url=SCRAPED_DOMAIN,
local_domain=LOCAL_DOMAIN)
self.dbsession.add(website)
self.dbsession.commit()
self.website = website
'''
Check directory for media and create it if it does not exist
'''
media_dir = WEB_APP_SETTINGS.get('downloaded.path')
if media_dir:
if not os.path.exists(media_dir):
os.mkdir(media_dir)
else:
raise Exception('Directory for downloaded media is not specified in settings')
'''
Check id downloaded media url is in application settings
'''
if WEB_APP_SETTINGS.get('downloaded.url') is None: raise Exception('URL for downloaded media is not specified')
def __init__(self, *args, **kw):
super(GrabMediaPipeline, self).__init__(*args, **kw)
self.media_store_path = WEB_APP_SETTINGS.get('downloaded.path')
self.media_local_url = WEB_APP_SETTINGS.get('downloaded.url')
self.PAGE_MEDIA = {}
self.LOCAL_MEDIA_URI = {}
def __init__(self, *args, **kw):
# get extra parameters of scraper launch cmd
SCRAPED_DOMAIN = kw.pop('SCRAPED_DOMAIN', None)
START_URL = kw.pop('START_URL', None)
LOCAL_DOMAIN = kw.pop('LOCAL_DOMAIN', None)
if START_URL:
self.start_urls = [START_URL]
if SCRAPED_DOMAIN:
if SCRAPED_DOMAIN.strip('.')[0] == 'www':
self.allowed_domains = [
SCRAPED_DOMAIN,
SCRAPED_DOMAIN.replace('www.', '')
]
else:
self.allowed_domains = [
SCRAPED_DOMAIN, 'www.%s' % SCRAPED_DOMAIN
]
if LOCAL_DOMAIN is None:
raise GrabberSpiderError('No local_url is specified for job')
super(GrabberSpider, self).__init__(*args, **kw)
log.msg('Init SQL alchemy engine', level=log.DEBUG)
engine = engine_from_config(WEB_APP_SETTINGS, 'sqlalchemy.')
conn = engine.connect()
self.dbsession = Session(bind=conn)
# patch orm objects to use this local session object
Base.metadata.create_all(engine) # while use creating DB here
if not self.check_local_domain_uniqueness(LOCAL_DOMAIN):
raise GrabberSpiderError('%s is already used in db')
q = self.dbsession.query(WebSite)\
.filter(WebSite.original_url == SCRAPED_DOMAIN)
website = q.first()
if website is None:
website = WebSite(original_url=SCRAPED_DOMAIN,
local_domain=LOCAL_DOMAIN)
self.dbsession.add(website)
self.dbsession.commit()
self.website = website
'''
Check directory for media and create it if it does not exist
'''
media_dir = WEB_APP_SETTINGS.get('downloaded.path')
if media_dir:
if not os.path.exists(media_dir):
os.mkdir(media_dir)
else:
raise Exception(
'Directory for downloaded media is not specified in settings')
'''
Check id downloaded media url is in application settings
'''
if WEB_APP_SETTINGS.get('downloaded.url') is None:
raise Exception('URL for downloaded media is not specified')
def __init__(self, *args, **kw):
super(GrabMediaPipeline, self).__init__(*args, **kw)
self.media_store_path = WEB_APP_SETTINGS.get('downloaded.path')
self.media_local_url = WEB_APP_SETTINGS.get('downloaded.url')
self.PAGE_MEDIA = {}
self.LOCAL_MEDIA_URI = {}