def __init__(self,
name,
spec,
item_schemas,
all_extractors,
settings=None,
**kw):
super(IblSpider, self).__init__(name, **kw)
self._job_id = settings.get('JOB', '')
spec = deepcopy(spec)
for key, val in kw.items():
if isinstance(val, six.string_types) and key in STRING_KEYS:
val = val.splitlines()
spec[key] = val
self._item_template_pages = sorted(
((t['scrapes'], t) for t in spec['templates']
if t.get('page_type', 'item') == 'item'),
key=itemgetter(0))
self._templates = [templ for _, templ in self._item_template_pages]
self.plugins = IndexedDict()
for plugin_class, plugin_name in zip(load_plugins(settings),
load_plugin_names(settings)):
instance = plugin_class()
instance.setup_bot(settings, spec, item_schemas, all_extractors)
self.plugins[plugin_name] = instance
self.js_enabled = False
self.SPLASH_HOST = None
if settings.get('SPLASH_URL'):
self.SPLASH_HOST = urlparse(settings.get('SPLASH_URL')).hostname
self.js_enabled = spec.get('js_enabled', False)
if self.js_enabled and (settings.get('SPLASH_PASS') is not None
or settings.get('SPLASH_USER') is not None):
self.splash_auth = basic_auth_header(
settings.get('SPLASH_USER', ''),
settings.get('SPLASH_PASS', ''))
self._filter_js_urls = self._build_js_url_filter(spec)
self.login_requests = []
self.form_requests = []
self._start_requests = []
self.generic_form = GenericForm(**kw)
self._create_init_requests(spec.get("init_requests", []))
self._process_start_urls(spec)
self.allowed_domains = spec.get(
'allowed_domains', self._get_allowed_domains(self._templates))
self.page_actions = spec.get('page_actions', [])
if not self.allowed_domains:
self.allowed_domains = None
def _configure_plugins(self, settings, spec, schemas, extractors):
plugins = IndexedDict()
for plugin_class, plugin_name in zip(load_plugins(settings),
load_plugin_names(settings)):
instance = plugin_class()
instance.setup_bot(settings, spec, schemas, extractors)
plugins[plugin_name] = instance
return plugins
def __init__(self, name, spec, item_schemas, all_extractors, settings=None,
**kw):
super(IblSpider, self).__init__(name, **kw)
self._job_id = settings.get('JOB', '')
spec = deepcopy(spec)
for key, val in kw.items():
if isinstance(val, six.string_types) and key in STRING_KEYS:
val = val.splitlines()
spec[key] = val
self._item_template_pages = sorted(
((t['scrapes'], t) for t in spec['templates']
if t.get('page_type', 'item') == 'item'), key=itemgetter(0))
self._templates = [templ for _, templ in self._item_template_pages]
self.plugins = IndexedDict()
for plugin_class, plugin_name in zip(load_plugins(settings),
load_plugin_names(settings)):
instance = plugin_class()
instance.setup_bot(settings, spec, item_schemas, all_extractors)
self.plugins[plugin_name] = instance
self.js_enabled = False
self.SPLASH_HOST = None
if settings.get('SPLASH_URL'):
self.SPLASH_HOST = urlparse(settings.get('SPLASH_URL')).hostname
self.js_enabled = spec.get('js_enabled', False)
if self.js_enabled and (settings.get('SPLASH_PASS') is not None or
settings.get('SPLASH_USER') is not None):
self.splash_auth = basic_auth_header(
settings.get('SPLASH_USER', ''),
settings.get('SPLASH_PASS', ''))
self._filter_js_urls = self._build_js_url_filter(spec)
self.login_requests = []
self.form_requests = []
self._start_requests = []
self.generic_form = GenericForm(**kw)
self._create_init_requests(spec.get("init_requests", []))
self._process_start_urls(spec)
self.allowed_domains = spec.get(
'allowed_domains',
self._get_allowed_domains(self._templates)
)
self.page_actions = spec.get('page_actions', [])
if not self.allowed_domains:
self.allowed_domains = None
def __init__(self,
name,
spec,
item_schemas,
all_extractors,
settings=None,
**kw):
super(IblSpider, self).__init__(name, **kw)
spec = deepcopy(spec)
for key, val in kw.items():
if isinstance(val, basestring) and key in STRING_KEYS:
val = val.splitlines()
spec[key] = val
self._item_template_pages = sorted(
((t['scrapes'], t) for t in spec['templates']
if t.get('page_type', 'item') == 'item'),
key=itemgetter(0))
self._templates = [templ for _, templ in self._item_template_pages]
self.plugins = IndexedDict()
for plugin_class, plugin_name in zip(load_plugins(settings),
load_plugin_names(settings)):
instance = plugin_class()
instance.setup_bot(settings, spec, item_schemas, all_extractors)
self.plugins[plugin_name] = instance
self.login_requests = []
self.form_requests = []
self._start_requests = []
self.generic_form = GenericForm(**kw)
self._create_init_requests(spec.get("init_requests", []))
self._process_start_urls(spec)
self.allowed_domains = spec.get(
'allowed_domains', self._get_allowed_domains(self._templates))
if not self.allowed_domains:
self.allowed_domains = None
class IblSpider(Spider):
def __init__(self, name, spec, item_schemas, all_extractors, settings=None,
**kw):
super(IblSpider, self).__init__(name, **kw)
self._job_id = settings.get('JOB', '')
spec = deepcopy(spec)
for key, val in kw.items():
if isinstance(val, six.string_types) and key in STRING_KEYS:
val = val.splitlines()
spec[key] = val
self._item_template_pages = sorted(
((t['scrapes'], t) for t in spec['templates']
if t.get('page_type', 'item') == 'item'), key=itemgetter(0))
self._templates = [templ for _, templ in self._item_template_pages]
self.plugins = IndexedDict()
for plugin_class, plugin_name in zip(load_plugins(settings),
load_plugin_names(settings)):
instance = plugin_class()
instance.setup_bot(settings, spec, item_schemas, all_extractors)
self.plugins[plugin_name] = instance
self.js_enabled = False
self.SPLASH_HOST = None
if settings.get('SPLASH_URL'):
self.SPLASH_HOST = urlparse(settings.get('SPLASH_URL')).hostname
self.js_enabled = spec.get('js_enabled', False)
if self.js_enabled and (settings.get('SPLASH_PASS') is not None or
settings.get('SPLASH_USER') is not None):
self.splash_auth = basic_auth_header(
settings.get('SPLASH_USER', ''),
settings.get('SPLASH_PASS', ''))
self._filter_js_urls = self._build_js_url_filter(spec)
self.login_requests = []
self.form_requests = []
self._start_requests = []
self.generic_form = GenericForm(**kw)
self._create_init_requests(spec.get("init_requests", []))
self._process_start_urls(spec)
self.allowed_domains = spec.get(
'allowed_domains',
self._get_allowed_domains(self._templates)
)
if not self.allowed_domains:
self.allowed_domains = None
def _process_start_urls(self, spec):
self.start_urls = spec.get('start_urls')
for url in self.start_urls:
request = Request(url, callback=self.parse, dont_filter=True)
self._add_splash_meta(request)
self._start_requests.append(request)
def _create_init_requests(self, spec):
for rdata in spec:
if rdata["type"] == "login":
request = Request(url=rdata.pop("loginurl"), meta=rdata,
callback=self.parse_login_page,
dont_filter=True)
self._add_splash_meta(request)
self.login_requests.append(request)
elif rdata["type"] == "form":
self.form_requests.append(
self.get_generic_form_start_request(rdata)
)
elif rdata["type"] == "start":
self._start_requests.append(
self._create_start_request_from_specs(rdata)
)
def parse_login_page(self, response):
username = response.request.meta["username"]
password = response.request.meta["password"]
args, url, method = fill_login_form(response.url, response.body,
username, password)
return FormRequest(url, method=method, formdata=args,
callback=self.after_login, dont_filter=True)
def after_login(self, response):
for result in self.parse(response):
yield result
for req in self._start_requests:
yield req
def get_generic_form_start_request(self, form_descriptor):
file_fields = list(self.generic_form.get_url_field(form_descriptor))
if file_fields:
(field_index, field_descriptor) = file_fields.pop(0)
form_descriptor['field_index'] = field_index
return FormRequest(self.generic_form.get_value(field_descriptor),
meta=form_descriptor,
callback=self.parse_field_url_page,
dont_filter=True)
else:
return Request(url=form_descriptor.pop("form_url"),
meta=form_descriptor, callback=self.parse_form_page,
dont_filter=True)
def parse_field_url_page(self, response):
form_descriptor = response.request.meta
field_index = form_descriptor['field_index']
field_descriptor = form_descriptor['fields'][field_index]
self.generic_form.set_values_url_field(field_descriptor, response.body)
yield self.get_generic_form_start_request(form_descriptor)
def parse_form_page(self, response):
fill_form = self.generic_form.fill_generic_form
try:
for (args, url, method) in fill_form(response.url, response.body,
response.request.meta):
yield FormRequest(url, method=method, formdata=args,
callback=self.after_form_page,
dont_filter=True)
except Exception as e:
self.logger.warning(str(e))
for req in self._start_requests:
yield req
def after_form_page(self, response):
for result in self.parse(response):
yield result
def _get_allowed_domains(self, templates):
urls = [x['url'] for x in templates]
urls += [x.url for x in self._start_requests]
return [x[1] for x in iter_unique_scheme_hostname(urls)]
def start_requests(self):
start_requests = []
if self.login_requests:
start_requests = self.login_requests
elif self.form_requests:
start_requests = self.form_requests
else:
start_requests = self._start_requests
for req in start_requests:
yield req
def _create_start_request_from_specs(self, info):
url = info["url"]
lspecs = info.get("link_extractor")
if lspecs:
linkextractor = create_linkextractor_from_specs(lspecs)
def _callback(spider, response):
for link in linkextractor.links_to_follow(response):
request = Request(url=link.url, callback=spider.parse)
yield self._add_splash_meta(request)
request = Request(url=url, callback=_callback)
return self._add_splash_meta(request)
request = Request(url=url, callback=self.parse)
return self._add_splash_meta(request)
def parse(self, response):
"""Main handler for all downloaded responses"""
request = response.request
if (request and request.method == 'POST' and
urlparse(request.url).hostname == self.SPLASH_HOST):
url = (json.loads(request.body).get('url'))
if url:
response._url = url
content_type = response.headers.get('Content-Type', '')
if isinstance(response, HtmlResponse):
return self.handle_html(response)
elif "application/rss+xml" in content_type:
return self.handle_rss(response)
else:
self.logger.debug(
"Ignoring page with content-type=%r: %s" % (content_type,
response.url)
)
return []
def _plugin_hook(self, name, *args):
results = []
for plugin in self.plugins.values():
if hasattr(plugin, name):
results.append(getattr(plugin, name)(*args))
return results
def _handle(self, hook, response, *extrasrgs):
generators = self._plugin_hook(hook, response, *extrasrgs)
for item_or_request in itertools.chain(*generators):
if isinstance(item_or_request, Request):
self._plugin_hook('process_request', item_or_request, response)
else:
self._plugin_hook('process_item', item_or_request, response)
if isinstance(item_or_request, Request):
item_or_request = self._add_splash_meta(item_or_request)
yield item_or_request
def handle_rss(self, response):
return self._handle('handle_rss', response, set([]))
def handle_html(self, response):
return self._handle('handle_html', response)
def _build_js_url_filter(self, spec):
if not self.js_enabled:
return lambda x: None
enable_patterns = spec.get('js_enable_patterns')
disable_patterns = spec.get('js_disable_patterns')
filterf = None
enablef = None
if enable_patterns:
pattern = enable_patterns[0] if len(enable_patterns) == 1 else \
"(?:%s)" % '|'.join(enable_patterns)
enablef = re.compile(pattern).search
filterf = enablef
if disable_patterns:
pattern = disable_patterns[0] if len(disable_patterns) == 1 else \
"(?:%s)" % '|'.join(disable_patterns)
disablef = re.compile(pattern).search
if not enablef:
filterf = lambda x: not disablef(x)
else:
filterf = lambda x: enablef(x) and not disablef(x)
return filterf if filterf else lambda x: x
def _add_splash_meta(self, request):
if self.js_enabled and self._filter_js_urls(request.url):
cleaned_url = urlparse(request.url)._replace(params='', query='',
fragment='').geturl()
request.meta['splash'] = {
'endpoint': 'render.html?job_id=%s' % self._job_id,
'args': {
'wait': 5,
'images': 0,
'url': request.url,
'baseurl': cleaned_url
}
}
return request
class IblSpider(SitemapSpider):
def __init__(self,
name,
spec,
item_schemas,
all_extractors,
settings=None,
**kw):
super(IblSpider, self).__init__(name, **kw)
self._job_id = settings.get('JOB', '')
spec = deepcopy(spec)
for key, val in kw.items():
if isinstance(val, six.string_types) and key in STRING_KEYS:
val = val.splitlines()
spec[key] = val
self._item_template_pages = sorted(
((t['scrapes'], t) for t in spec['templates']
if t.get('page_type', 'item') == 'item'),
key=itemgetter(0))
self._templates = [templ for _, templ in self._item_template_pages]
self.plugins = IndexedDict()
for plugin_class, plugin_name in zip(load_plugins(settings),
load_plugin_names(settings)):
instance = plugin_class()
instance.setup_bot(settings, spec, item_schemas, all_extractors)
self.plugins[plugin_name] = instance
self.js_enabled = False
self.SPLASH_HOST = None
if settings.get('SPLASH_URL'):
self.SPLASH_HOST = urlparse(settings.get('SPLASH_URL')).hostname
self.js_enabled = spec.get('js_enabled', False)
if self.js_enabled and (settings.get('SPLASH_PASS') is not None
or settings.get('SPLASH_USER') is not None):
self.splash_auth = basic_auth_header(
settings.get('SPLASH_USER', ''),
settings.get('SPLASH_PASS', ''))
self._filter_js_urls = self._build_js_url_filter(spec)
self.login_requests = []
self.form_requests = []
self._start_requests = []
self.generic_form = GenericForm(**kw)
self._create_init_requests(spec.get("init_requests", []))
self._process_start_urls(spec)
self.allowed_domains = spec.get(
'allowed_domains', self._get_allowed_domains(self._templates))
self.page_actions = spec.get('page_actions', [])
if not self.allowed_domains:
self.allowed_domains = None
def _process_start_urls(self, spec):
self.start_urls = spec.get('start_urls')
for url in self.start_urls:
request = Request(url, callback=self.parse, dont_filter=True)
self._add_splash_meta(request)
self._start_requests.append(request)
def _create_init_requests(self, spec):
for rdata in spec:
if rdata["type"] == "login":
request = Request(url=rdata.pop("loginurl"),
meta=rdata,
callback=self.parse_login_page,
dont_filter=True)
self._add_splash_meta(request)
self.login_requests.append(request)
elif rdata["type"] == "form":
self.form_requests.append(
self.get_generic_form_start_request(rdata))
elif rdata["type"] == "start":
self._start_requests.append(
self._create_start_request_from_specs(rdata))
def parse_login_page(self, response):
username = response.request.meta["username"]
password = response.request.meta["password"]
args, url, method = fill_login_form(response.url, response.body,
username, password)
return FormRequest(url,
method=method,
formdata=args,
callback=self.after_login,
dont_filter=True)
def after_login(self, response):
for result in self.parse(response):
yield result
for req in self._start_requests:
yield req
def get_generic_form_start_request(self, form_descriptor):
file_fields = list(self.generic_form.get_url_field(form_descriptor))
if file_fields:
(field_index, field_descriptor) = file_fields.pop(0)
form_descriptor['field_index'] = field_index
return FormRequest(self.generic_form.get_value(field_descriptor),
meta=form_descriptor,
callback=self.parse_field_url_page,
dont_filter=True)
else:
return Request(url=form_descriptor.pop("form_url"),
meta=form_descriptor,
callback=self.parse_form_page,
dont_filter=True)
def parse_field_url_page(self, response):
form_descriptor = response.request.meta
field_index = form_descriptor['field_index']
field_descriptor = form_descriptor['fields'][field_index]
self.generic_form.set_values_url_field(field_descriptor, response.body)
yield self.get_generic_form_start_request(form_descriptor)
def parse_form_page(self, response):
fill_form = self.generic_form.fill_generic_form
try:
for (args, url, method) in fill_form(response.url, response.body,
response.request.meta):
yield FormRequest(url,
method=method,
formdata=args,
callback=self.after_form_page,
dont_filter=True)
except Exception as e:
self.logger.warning(str(e))
for req in self._start_requests:
yield req
def after_form_page(self, response):
for result in self.parse(response):
yield result
def _get_allowed_domains(self, templates):
urls = [x['url'] for x in templates]
urls += [x.url for x in self._start_requests]
return [x[1] for x in iter_unique_scheme_hostname(urls)]
def start_requests(self):
start_requests = []
if self.login_requests:
start_requests = self.login_requests
elif self.form_requests:
start_requests = self.form_requests
else:
start_requests = self._start_requests
for req in start_requests:
yield req
def _create_start_request_from_specs(self, info):
url = info["url"]
lspecs = info.get("link_extractor")
if lspecs:
linkextractor = create_linkextractor_from_specs(lspecs)
def _callback(spider, response):
for link in linkextractor.links_to_follow(response):
request = Request(url=link.url, callback=spider.parse)
yield self._add_splash_meta(request)
request = Request(url=url, callback=_callback)
return self._add_splash_meta(request)
request = Request(url=url, callback=self.parse)
return self._add_splash_meta(request)
def parse(self, response):
"""Main handler for all downloaded responses"""
request = response.request
if (request and request.method == 'POST'
and urlparse(request.url).hostname == self.SPLASH_HOST):
url = (json.loads(request.body).get('url'))
if url:
response._url = url
content_type = response.headers.get('Content-Type', '')
if isinstance(response, HtmlResponse):
return self.handle_html(response)
if (isinstance(response, XmlResponse) or response.url.endswith(
('.xml', '.xml.gz'))):
response._set_body(self._get_sitemap_body(response))
return self.handle_xml(response)
self.logger.debug("Ignoring page with content-type=%r: %s" %
(content_type, response.url))
return []
def _plugin_hook(self, name, *args):
results = []
for plugin in self.plugins.values():
if hasattr(plugin, name):
results.append(getattr(plugin, name)(*args))
return results
def _handle(self, hook, response, *extrasrgs):
generators = self._plugin_hook(hook, response, *extrasrgs)
for item_or_request in itertools.chain(*generators):
if isinstance(item_or_request, Request):
self._plugin_hook('process_request', item_or_request, response)
else:
self._plugin_hook('process_item', item_or_request, response)
if isinstance(item_or_request, Request):
item_or_request = self._add_splash_meta(item_or_request)
yield item_or_request
def handle_xml(self, response):
return self._handle('handle_xml', response, set([]))
def handle_html(self, response):
return self._handle('handle_html', response)
def _build_js_url_filter(self, spec):
if not self.js_enabled:
return lambda x: None
enable_patterns = spec.get('js_enable_patterns')
disable_patterns = spec.get('js_disable_patterns')
filterf = None
enablef = None
if enable_patterns:
pattern = enable_patterns[0] if len(enable_patterns) == 1 else \
"(?:%s)" % '|'.join(enable_patterns)
enablef = re.compile(pattern).search
filterf = enablef
if disable_patterns:
pattern = disable_patterns[0] if len(disable_patterns) == 1 else \
"(?:%s)" % '|'.join(disable_patterns)
disablef = re.compile(pattern).search
if not enablef:
filterf = lambda x: not disablef(x)
else:
filterf = lambda x: enablef(x) and not disablef(x)
return filterf if filterf else lambda x: x
def _add_splash_meta(self, request):
if self.js_enabled and self._filter_js_urls(request.url):
cleaned_url = urlparse(request.url)._replace(params='',
query='',
fragment='').geturl()
request.meta['splash'] = {
'endpoint': 'render.html?job_id=%s' % self._job_id,
'args': {
'wait': 5,
'images': 0,
'url': request.url,
'baseurl': cleaned_url
}
}
return request