def __init__(self, settings, stats):
if not settings['HTTPCACHE_ENABLED']:
raise NotConfigured
self.policy = load_object(settings['HTTPCACHE_POLICY'])(settings)
self.storage = load_object(settings['HTTPCACHE_STORAGE'])(settings)
self.ignore_missing = settings['HTTPCACHE_IGNORE_MISSING']
self.stats = stats
def __init__(self):
self.classes = {}
self.mimetypes = MimeTypes()
mimedata = get_data('scrapy', 'mime.types').decode('utf8')
self.mimetypes.readfp(StringIO(mimedata))
for mimetype, cls in six.iteritems(self.CLASSES):
self.classes[mimetype] = load_object(cls)
def from_settings(cls, settings, starter=None):
mwlist = cls._get_middleware_list_from_settings(settings)
middlewares = []
enabled = []
for clspath in mwlist:
try:
mwcls = load_object(clspath)
if starter and hasattr(mwcls, 'from_starter'):
mw = mwcls.from_starter(starter)
elif hasattr(mwcls, 'from_settings'):
mw = mwcls.from_settings(settings)
else:
mw = mwcls()
middlewares.append(mw)
enabled.append(clspath)
except NotConfigured as e:
if e.args:
clsname = clspath.split('.')[-1]
logger.warning("Disabled %(clsname)s: %(eargs)s", {
'clsname': clsname,
'eargs': e.args[0]
},
extra={'starter': starter})
logger.info("Enabled %(componentname)ss:\n%(enabledlist)s", {
'componentname': cls.component_name,
'enabledlist': pprint.pformat(enabled)
},
extra={'starter': starter})
return cls(*middlewares)
def __init__(self, starter):
self.slot = None
self.spidermw = SpiderMiddlewareManager.from_starter(starter)
itemmw_cls = load_object(starter.settings['ITEM_PROCESSOR'])
self.itemmw = itemmw_cls.from_starter(starter)
self.concurrent_items = starter.settings['CONCURRENT_ITEMS']
self.starter = starter
def __init__(self, starter):
self.starter = starter
self.settings = starter.settings
self.signals = starter.signals
self.loop = None
self.spider = None
self.scheduler = None
self.scraper = Scraper(starter)
self.heart = None
self.scheduler_class = load_object(self.settings['SCHEDULER'])
downloader_class = load_object(self.settings['DOWNLOADER'])
self.downloader = downloader_class(starter)
self.running = False
self.crawling = []
self.max = 5
self.paused = False
self.start_time = 0
def _get_spider_loader(settings):
"""Get SpiderLoader instance from settings"""
cls_path = settings['SPIDER_LOADER_CLASS']
loader_cls = load_object(cls_path)
try:
verifyClass(ISpiderLoader, loader_cls)
except DoesNotImplement:
logger.warn(
'SPIDER_LOADER_CLASS (previously named SPIDER_MANAGER_CLASS) does not fully implement '
'quixote.spider.spiderloader.ISpiderLoader interface. Please add all missing methods to avoid '
'unexpected runtime errors.',
category=QuixoteDeprecationWarning,
stacklevel=2)
return loader_cls.from_settings(settings)
def __init__(self,
spider_name,
project_settings=None,
is_check_emmory=False):
from quixote.settings import settings
self.settings = Settings(settings).get_settings()
project_settings = Settings.get_dict_from_settings_file(
project_settings)
for s_k, s_v in project_settings.items():
self.settings[s_k] = s_v
self.spider_loader = _get_spider_loader(self.settings)
print(self.spider_loader)
print(self.settings)
self.engine_class = load_object(self.settings['ENGINE'])
# self.spider_class = load_object(spider_class)
self.spider_class = self.spider_loader.get_spider_by_name(spider_name)
self.signals = SignalManager()
self.stats = load_object(self.settings['STATS_CLASS'])(self)
self.extensions = ExtensionManager.from_starter(self)
self.engine = None
self.spider = None
self.crawling = False
self.is_check_emmory = is_check_emmory
self.start_time = None
def _get_handler(self, scheme):
if scheme in self._handlers:
return self._handlers[scheme]
if scheme in self._not_configured:
return None
if scheme not in self._schemes:
self._not_configured[scheme] = 'no handler available for that scheme'
return None
path = self._schemes[scheme]
try:
download_handler = load_object(path)
dh = download_handler(self._starter.settings)
except NotConfigured as e:
self._not_configured[scheme] = str(e)
return None
except Exception as e:
logger.error('Loading "%(class_path)s" for scheme "%(scheme)s"', {"class_path": path, "scheme": scheme},
exc_info=True, extra={'crawler': self._starter})
self._not_configured[scheme] = str(e)
return None
else:
self._handlers[scheme] = dh
return self._handlers[scheme]
