def __init__(self, **kw):
args = DEFAULT_INPUT.copy()
args.update(kw)
self.args = args
self.start_urls = to_list(args['start_urls'])
self.maxdepth = int(args['maxdepth'])
self.follow_prefixes = to_list(args['follow_prefixes'])
self.nofollow_prefixes = to_list(args['nofollow_prefixes'])
self.discover_prefixes = [
url_to_lru_clean(
"http%s://%s" %
(https, u.replace('http://', '').replace('https://', '')))
for u in to_list(args['discover_prefixes']) for https in ['', 's']
]
self.resolved_links = {}
self.user_agent = args['user_agent']
self.phantom = 'phantom' in args and args[
'phantom'] and args['phantom'].lower() != "false"
if self.phantom:
self.ph_timeout = int(
args.get('phantom_timeout', PHANTOM['TIMEOUT']))
self.ph_idle_timeout = int(
args.get('phantom_idle_timeout', PHANTOM['IDLE_TIMEOUT']))
self.ph_ajax_timeout = int(
args.get('phantom_ajax_timeout', PHANTOM['AJAX_TIMEOUT']))
self.errors = 0
dispatcher.connect(self.closed, spider_closed)
dispatcher.connect(self.crashed, spider_error)
def parse_html(self, response, lru):
lrulinks = []
# handle redirects
realdepth = response.meta['depth']
if 300 < response.status < 400:
redir_url = response.headers['Location']
if redir_url.startswith('/'):
redir_url = "%s%s" % (lru_get_host_url(lru).strip('/'),
redir_url)
elif redir_url.startswith(
'./') or not redir_url.startswith('http'):
redir_url = "%s%s" % (lru_get_path_url(lru).strip('/'),
redir_url[1:])
links = [{'url': redir_url}]
response.meta['depth'] -= 1
else:
links = self.link_extractor.extract_links(response)
for link in links:
try:
url = link.url
except AttributeError:
url = link['url']
try:
lrulink = url_to_lru_clean(url)
except ValueError, e:
self.log("Error converting URL to LRU: %s" % e, log.ERROR)
continue
lrulinks.append(lrulink)
if self._should_follow(response.meta['depth'], lru, lrulink) and \
not url_has_any_extension(url, self.ignored_exts):
yield self._request(url)
def parse_html(self, response, lru):
lrulinks = []
# handle redirects
realdepth = response.meta['depth']
if 300 < response.status < 400:
redir_url = response.headers['Location']
if redir_url.startswith('/'):
redir_url = "%s%s" % (lru_get_host_url(lru).strip('/'), redir_url)
elif redir_url.startswith('./') or not redir_url.startswith('http'):
redir_url = "%s%s" % (lru_get_path_url(lru).strip('/'), redir_url[1:])
links = [{'url': redir_url}]
response.meta['depth'] -= 1
else:
try:
links = self.link_extractor.extract_links(response)
except Exception as e:
self.log("ERROR: links extractor crashed on %s: %s %s" % (response, type(e), e), log.ERROR)
links = []
self.errors += 1
for link in links:
try:
url = link.url
except AttributeError:
url = link['url']
try:
lrulink = url_to_lru_clean(url)
except ValueError, e:
self.log("Error converting URL %s to LRU: %s" % (url, e), log.ERROR)
continue
lrulinks.append((url, lrulink))
if self._should_follow(response.meta['depth'], lru, lrulink) and \
not url_has_any_extension(url, self.ignored_exts):
yield self._request(url)
def _new_page(self, url, lru=None):
if lru is None:
lru = url_to_lru_clean(url)
p = Page()
p['url'] = url
p['lru'] = lru
p['timestamp'] = int(time.time() * 1000)
return p
def _new_page(self, url, lru=None):
if lru is None:
lru = url_to_lru_clean(url)
p = Page()
p['url'] = url
p['lru'] = lru
p['timestamp'] = int(time.time()*1000)
return p
def process_item(self, item, spider):
lrulinks = []
for url, lru in item["lrulinks"]:
if self._should_resolve(lru, spider):
try:
rurl = yield self.agent.resolve(url)
lru = url_to_lru_clean(rurl)
except Exception, e:
spider.log("Error resolving redirects from URL %s: %s %s" % (url, type(e), e), log.INFO)
lrulinks.append(lru)
def handle_response(self, response):
lru = url_to_lru_clean(response.url, TLDS_TREE)
if self.phantom:
self.phantom.get(response.url)
# Collect whole DOM of the webpage including embedded iframes
with open(os.path.join(PHANTOM["JS_PATH"], "get_iframes_content.js")) as js:
get_bod_w_iframes = js.read()
bod_w_iframes = self.phantom.execute_script(get_bod_w_iframes)
response._set_body(bod_w_iframes.encode('utf-8'))
# Try to scroll and unfold page
self.log("Start PhantomJS scrolling and unfolding", logging.INFO)
with open(os.path.join(PHANTOM["JS_PATH"], "scrolldown_and_unfold.js")) as js:
try:
signal.signal(signal.SIGALRM, timeout_alarm)
signal.alarm(self.ph_timeout + 30)
timedout = self.phantom.execute_async_script(
js.read(), self.ph_timeout,
self.ph_idle_timeout, self.ph_ajax_timeout)
signal.alarm(0)
if timedout:
raise SeleniumTimeout
self.log("Scrolling/Unfolding finished", logging.INFO)
except SeleniumTimeout:
self.log("Scrolling/Unfolding timed-out (%ss)" % self.ph_timeout, logging.WARNING)
self.errors += 1
except WebDriverException as e:
err = json.loads(e.msg)['errorMessage']
self.log("Scrolling/Unfolding crashed: %s" % err, logging.ERROR)
self.errors += 1
except Exception as e:
self.log("Scrolling/Unfolding crashed: %s %s" % (type(e), e), logging.ERROR)
self.errors += 1
return self._make_raw_page(response, lru)
bod_w_iframes = self.phantom.execute_script(get_bod_w_iframes)
response._set_body(bod_w_iframes.encode('utf-8'))
# Cleanup pages with base64 images embedded that make scrapy consider them not htmlresponses
if response.status == 200 and not isinstance(response, HtmlResponse):
try:
flags = response.flags
if "partial" in flags:
flags.remove("partial")
flags.append("cleaned")
response = HtmlResponse(response.url, headers=response.headers, body=cleanupbase64images(response.body), flags=flags, request=response.request)
self.log("WARNING: page with base64 embedded images was cleaned-up for links extraction")
except:
pass
if 300 < response.status < 400 or isinstance(response, HtmlResponse):
return self.parse_html(response, lru)
else:
return self._make_raw_page(response, lru)
def handle_response(self, response):
lru = url_to_lru_clean(response.url)
if self.phantom:
self.phantom.get(response.url)
# Collect whole DOM of the webpage including embedded iframes
with open(os.path.join(PHANTOM["JS_PATH"], "get_iframes_content.js")) as js:
get_bod_w_iframes = js.read()
bod_w_iframes = self.phantom.execute_script(get_bod_w_iframes)
response._set_body(bod_w_iframes.encode('utf-8'))
# Try to scroll and unfold page
self.log("Start PhantomJS scrolling and unfolding", log.INFO)
with open(os.path.join(PHANTOM["JS_PATH"], "scrolldown_and_unfold.js")) as js:
try:
signal.signal(signal.SIGALRM, timeout_alarm)
signal.alarm(self.ph_timeout + 30)
timedout = self.phantom.execute_async_script(
js.read(), self.ph_timeout,
self.ph_idle_timeout, self.ph_ajax_timeout)
signal.alarm(0)
if timedout:
raise SeleniumTimeout
self.log("Scrolling/Unfolding finished", log.INFO)
except SeleniumTimeout:
self.log("Scrolling/Unfolding timed-out (%ss)" % self.ph_timeout, log.WARNING)
self.errors += 1
except WebDriverException as e:
err = json.loads(e.msg)['errorMessage']
self.log("Scrolling/Unfolding crashed: %s" % err, log.ERROR)
self.errors += 1
except Exception as e:
self.log("Scrolling/Unfolding crashed: %s %s" % (type(e), e), log.ERROR)
self.errors += 1
return self._make_raw_page(response, lru)
bod_w_iframes = self.phantom.execute_script(get_bod_w_iframes)
response._set_body(bod_w_iframes.encode('utf-8'))
# Cleanup pages with base64 images embedded that make scrapy consider them not htmlresponses
if response.status == 200 and not isinstance(response, HtmlResponse):
try:
flags = response.flags
if "partial" in flags:
flags.remove("partial")
flags.append("cleaned")
response = HtmlResponse(response.url, headers=response.headers, body=cleanupbase64images(response.body), flags=flags, request=response.request)
self.log("WARNING: page with base64 embedded images was cleaned-up for links extraction")
except:
pass
if 300 < response.status < 400 or isinstance(response, HtmlResponse):
return self.parse_html(response, lru)
else:
return self._make_raw_page(response, lru)
def parse_html(self, response, lru):
lrulinks = []
# handle redirects
realdepth = response.meta['depth']
if 300 < response.status < 400:
redir_url = response.headers['Location']
if redir_url.startswith('/'):
redir_url = "%s%s" % (lru_get_host_url(lru).strip('/'),
redir_url)
elif redir_url.startswith('../'):
lrustart = lru[:lru.rfind('|p:')]
while redir_url.startswith('../'):
lrustart = lrustart[:lrustart.rfind('|p:')]
redir_url = redir_url[3:]
redir_url = "%s/%s" % (lru_to_url(lrustart + '|'), redir_url)
elif redir_url.startswith(
'./') or not redir_url.startswith('http'):
redir_url = "%s%s" % (lru_get_path_url(lru).strip('/'),
redir_url[1:])
links = [{'url': redir_url}]
response.meta['depth'] -= 1
else:
try:
links = self.link_extractor.extract_links(response)
except Exception as e:
self.log(
"ERROR: links extractor crashed on %s: %s %s" %
(response, type(e), e), logging.ERROR)
links = []
self.errors += 1
for link in links:
try:
url = link.url
except AttributeError:
url = link['url']
try:
lrulink = url_to_lru_clean(url, TLDS_TREE)
except (ValueError, IndexError) as e:
self.log("Error converting URL %s to LRU: %s" % (url, e),
logging.ERROR)
continue
lrulinks.append((url, lrulink))
if self._should_follow(response.meta['depth'], lrulink) and \
not url_has_any_extension(url, self.ignored_exts):
yield self._request(url)
response.meta['depth'] = realdepth
yield self._make_html_page(response, lru, lrulinks)
def process_item(self, item, spider):
lrulinks = []
for url, lru in item["lrulinks"]:
if self._should_resolve(lru, spider):
if url in spider.resolved_links:
lru = spider.resolved_links[url]
else:
try:
agent = ResolverAgent(proxy=self.proxy)
rurl = yield agent.resolve(url)
if rurl == url and has_prefix(lru, spider.discover_prefixes):
rurl = yield agent.resolve(url)
lru = url_to_lru_clean(rurl)
spider.resolved_links[url] = lru
except Exception, e:
spider.log("Error resolving redirects from URL %s: %s %s" % (url, type(e), e), log.INFO)
lrulinks.append(lru)
def process_item(self, item, spider):
lrulinks = []
for url, lru in item["lrulinks"]:
if self._should_resolve(lru, spider):
if url in spider.resolved_links:
lru = spider.resolved_links[url]
else:
try:
agent = ResolverAgent(proxy=self.proxy)
rurl = yield agent.resolve(url)
if rurl == url and has_prefix(lru, spider.discover_prefixes):
rurl = yield agent.resolve(url)
lru = url_to_lru_clean(rurl, TLDS_TREE)
spider.resolved_links[url] = lru
except Exception, e:
spider.log("Error resolving redirects from URL %s: %s %s" % (url, type(e), e), log.INFO)
lrulinks.append(lru)
def __init__(self, **kw):
args = DEFAULT_INPUT.copy()
args.update(kw)
self.args = args
self.start_urls = to_list(args['start_urls'])
self.maxdepth = int(args['maxdepth'])
self.follow_prefixes = to_list(args['follow_prefixes'])
self.nofollow_prefixes = to_list(args['nofollow_prefixes'])
self.discover_prefixes = [url_to_lru_clean(u) for u in to_list(args['discover_prefixes'])]
self.user_agent = args['user_agent']
self.phantom = 'phantom' in args and args['phantom'] and args['phantom'].lower() != "false"
if self.phantom:
self.ph_timeout = int(args.get('phantom_timeout', PHANTOM['TIMEOUT']))
self.ph_idle_timeout = int(args.get('phantom_idle_timeout', PHANTOM['IDLE_TIMEOUT']))
self.ph_ajax_timeout = int(args.get('phantom_ajax_timeout', PHANTOM['AJAX_TIMEOUT']))
self.errors = 0
dispatcher.connect(self.closed, spider_closed)
dispatcher.connect(self.crashed, spider_error)
def __init__(self, **kw):
args = DEFAULT_INPUT.copy()
args.update(kw)
self.args = args
self.start_urls = to_list(args['start_urls'])
self.maxdepth = int(args['max_depth'])
self.follow_prefixes = to_list(args['follow_prefixes'])
self.nofollow_prefixes = to_list(args['nofollow_prefixes'])
self.discover_prefixes = [url_to_lru_clean("http%s://%s" % (https, u.replace('http://', '').replace('https://', '')), TLDS_TREE) for u in to_list(args['discover_prefixes']) for https in ['', 's']]
self.resolved_links = {}
self.user_agent = args['user_agent']
self.phantom = 'phantom' in args and args['phantom'] and args['phantom'].lower() != "false"
self.cookies = None
if 'cookies' in args:
self.cookies = dict(cookie.split('=', 1) for cookie in re.split(r'\s*;\s*', args['cookies']) if '=' in cookie)
if self.phantom:
self.ph_timeout = int(args.get('phantom_timeout', PHANTOM['TIMEOUT']))
self.ph_idle_timeout = int(args.get('phantom_idle_timeout', PHANTOM['IDLE_TIMEOUT']))
self.ph_ajax_timeout = int(args.get('phantom_ajax_timeout', PHANTOM['AJAX_TIMEOUT']))
self.errors = 0
def __init__(self, **kw):
args = DEFAULT_INPUT.copy()
args.update(kw)
self.args = args
self.start_urls = to_list(args['start_urls'])
self.maxdepth = int(args['max_depth'])
self.follow_prefixes = to_list(args['follow_prefixes'])
self.nofollow_prefixes = to_list(args['nofollow_prefixes'])
self.discover_prefixes = [url_to_lru_clean("http%s://%s" % (https, u.replace('http://', '').replace('https://', '')), TLDS_TREE) for u in to_list(args['discover_prefixes']) for https in ['', 's']]
self.resolved_links = {}
self.user_agent = args['user_agent']
self.phantom = 'phantom' in args and args['phantom'] and args['phantom'].lower() != "false"
self.cookies = None
if 'cookies' in args:
self.cookies = dict(cookie.split('=') for cookie in re.split(r'\s*;\s*', args['cookies']) if '=' in cookie)
if self.phantom:
self.ph_timeout = int(args.get('phantom_timeout', PHANTOM['TIMEOUT']))
self.ph_idle_timeout = int(args.get('phantom_idle_timeout', PHANTOM['IDLE_TIMEOUT']))
self.ph_ajax_timeout = int(args.get('phantom_ajax_timeout', PHANTOM['AJAX_TIMEOUT']))
self.errors = 0
dispatcher.connect(self.closed, spider_closed)
dispatcher.connect(self.crashed, spider_error)
def __init__(self, **kwargs):
mongo = MongoClient(MONGO_HOST, MONGO_PORT)[MONGO_DB][MONGO_JOBS_COL]
job = mongo.find_one({"_id": kwargs["job_id"]})
args = job["crawl_arguments"]
self.args = args
self.start_urls = to_list(args['start_urls'])
self.maxdepth = int(args['max_depth'])
self.follow_prefixes = to_list(args['follow_prefixes'])
self.nofollow_prefixes = to_list(args['nofollow_prefixes'])
self.prefixes_trie = LRUTrie()
for p in self.follow_prefixes:
self.prefixes_trie.set_lru(p, True)
for p in self.nofollow_prefixes:
self.prefixes_trie.set_lru(p, False)
self.discover_prefixes = [
url_to_lru_clean(
"http%s://%s" %
(https, u.replace('http://', '').replace('https://', '')),
TLDS_TREE) for u in to_list(args['discover_prefixes'])
for https in ['', 's']
]
self.resolved_links = {}
self.user_agent = args['user_agent']
self.phantom = 'phantom' in args and args[
'phantom'] and args['phantom'].lower() != "false"
self.cookies = None
if 'cookies' in args and args["cookies"]:
self.cookies = dict(
cookie.split('=', 1)
for cookie in re.split(r'\s*;\s*', args['cookies'])
if '=' in cookie)
if self.phantom:
self.ph_timeout = int(
args.get('phantom_timeout', PHANTOM['TIMEOUT']))
self.ph_idle_timeout = int(
args.get('phantom_idle_timeout', PHANTOM['IDLE_TIMEOUT']))
self.ph_ajax_timeout = int(
args.get('phantom_ajax_timeout', PHANTOM['AJAX_TIMEOUT']))
self.errors = 0
def handle_response(self, response):
lru = url_to_lru_clean(response.url)
if 300 < response.status < 400 or isinstance(response, HtmlResponse):
return self.parse_html(response, lru)
else:
return self._make_raw_page(response, lru)
def handle_response(self, response):
lru = url_to_lru_clean(response.url)
if 300 < response.status < 400 or isinstance(response, HtmlResponse):
return self.parse_html(response, lru)
else:
return self._make_raw_page(response, lru)
