def start_reviews(self,
site_response,
product,
filter_other_sources=True,
sort=None,
dir=None,
extra_review_parser=None):
self.headers['Host'] = self.bv_subdomain
self.headers['Referer'] = site_response.url
url_params = {
'bv_subdomain': self.bv_subdomain,
'bv_site_locale': self.bv_site_locale,
'source_internal_id': product['source_internal_id']
}
review_url = self.FORMAT_URL.format(**url_params)
if sort:
review_url = set_query_parameter(review_url, 'sort', sort)
if sort and dir:
review_url = set_query_parameter(review_url, 'dir', dir)
request = Request(review_url,
callback=self.parse_reviews,
headers=self.headers)
request.meta['product'] = product
request.meta['filter_other_sources'] = filter_other_sources
request.meta['extra_review_parser'] = extra_review_parser
return request
def parse_cat_filters(self, response):
category_name = response.meta['category_name']
base_url = get_base_url(response.url)
category = CategoryItem()
category["category_path"] = category_name
category["category_leaf"] = category_name
category["category_url"] = base_url
yield category
response_json = json.loads(response.body_as_unicode())
specs = response_json['specs']
for spec in specs:
if spec['f_name'] == 'Manufacturer':
db_name = spec['db_name']
else:
continue
if 'options' in spec:
options = spec['options']
filter_key = 'id'
if 'tree' in spec:
options = spec['tree']
filter_key = 'key'
if not options or not filter_key:
raise Exception("Cannot find all manufacturer values in %s" % \
json.dumps(spec))
for option in options:
manufacturer = option['title']
filter_value = option[filter_key]
products_url = self.products_url[category_name]
products_url = set_query_parameter(products_url,
'_fil[0][field]', db_name)
products_url = set_query_parameter(products_url,
'_fil[0][operator]', '=')
products_url = set_query_parameter(products_url,
'_fil[0][value]',
filter_value)
_headers = self.get_headers(response.url)
request = Request(products_url,
self.parse_product,
headers=_headers,
meta={
'dont_merge_cookies': True,
'dont_redirect': True
},
cookies={})
request.meta['category'] = category
request.meta['manufacturer'] = manufacturer
yield request
return
def parse_reviews(self, response):
reviews_xpath = "//li[@itemprop='review']"
pros_xpath = ".//li[contains(@class, 'review-pros-and-cons__attribute--pro')]//text()"
cons_xpath = ".//li[contains(@class, 'review-pros-and-cons__attribute--con')]//text()"
product = response.meta['product']
if not 'last_date_db' in response.meta:
bol_id = response.meta['bol_id']
ean = response.meta.get('ean', None)
yield product
yield bol_id
yield ean
last_review_in_db = get_latest_user_review_date(
self.mysql_manager, self.spider_conf['source_id'],
bol_id["ID_kind"], bol_id["ID_value"])
else:
last_review_in_db = response.meta['last_date_db']
review_items = get_review_items_from_microdata(self, 'USER', response,
product, reviews_xpath,
pros_xpath, cons_xpath)
if not review_items:
return
for review in review_items:
yield review
#incremental scraping
date = review['TestDateText']
last_date_in_page = dateparser.parse(date, ["%Y-%m-%d"])
if last_review_in_db > last_date_in_page:
return
offset = get_query_parameter(response.url, 'offset')
if not offset:
offset = self.default_offset
offset = int(offset) + self.limit
next_page_url = set_query_parameter(response.url, 'offset', offset)
next_page_url = set_query_parameter(next_page_url, 'limit', self.limit)
request = Request(next_page_url, callback=self.parse_reviews)
request.meta['use_proxy'] = True
request.meta['last_date_db'] = last_review_in_db
request.meta['product'] = product
yield request
def parse_product(self, response):
sii_re = '-([^\-]+).html'
product = ProductItem()
product['TestUrl'] = response.url.split('#')[0]
product['OriginalCategoryName'] = response.meta['category'][
'category_path']
product['ProductName'] = self.extract(response.xpath('//h1/text()'))
product['PicURL'] = self.extract(
response.xpath('//a[@itemprop="image"]/@href'))
product['ProductManufacturer'] = self.extract(
response.xpath('//span[@itemprop="brand"]/a/span/text()'))
match = re.search(sii_re, response.url)
if not match:
return
source_internal_id = match.group(1)
product['source_internal_id'] = source_internal_id
yield product
review_xpath = "//ul[@class='pagNum']/@data-action"
total_page_xpath = "//ul[@class='pagNum']/li[@class='next']/preceding-sibling::li[1]/text()"
review_url = self.extract_xpath(response, review_xpath)
total_pages = self.extract_xpath(response, total_page_xpath)
if not total_pages:
total_pages = 1
latest_db_date = get_latest_user_review_date_by_sii(
self.mysql_manager, self.spider_conf["source_id"],
source_internal_id)
if review_url:
set_query_parameter(review_url, 'ReviewOrdering', '2')
review_url = get_full_url(response, review_url)
request = Request(url=review_url, callback=self.parse_reviews)
request.meta['product'] = product
request.meta['current_page'] = 1
if total_pages:
request.meta['total_pages'] = total_pages
request.meta['latest_db_date'] = latest_db_date
yield request
def parse_category(self, response):
body = json.loads(response.body_as_unicode())
category_path = response.meta.get('category_path', [])
children_categories = body.get('categories', [])
if children_categories:
for _category in children_categories:
_path = deepcopy(category_path)
try:
if 'name' in _category:
_path.append(_category['name'])
elif 'Name' in _category:
_path.append(_category['Name'])
except Exception, e:
print _category
raise e
category_url = set_query_parameter(self.category_url, 'apikey',
self.open_api_key)
category_url = set_query_parameter(category_url, 'ids',
_category['id'])
request = Request(category_url, self.parse_category)
request.meta['category_path'] = _path
yield request
def parse_reviews(self, response):
reviews = response.xpath('//div[contains(@class,"detRating")]')
product = response.meta['product']
date_xpath = './/div[@class="date"]/@content'
rating_xpath = './/div[@class="rat"]/span[1]/text()'
title_xpath = './/div[@class="title"]//text()'
summary_xpath = './/div[@class="comm"]//text()'
date = None
for review in reviews:
date = self.extract_xpath(review, date_xpath)
rating = self.extract_xpath(review, rating_xpath)
title = self.extract_xpath(review, title_xpath)
summary = self.extract_all_xpath(review, summary_xpath)
user_review = ReviewItem.from_product(product=product,
tp='USER',
date=date,
rating=rating,
title=title,
summary=summary)
yield user_review
current_page = response.meta['current_page']
total_pages = response.meta['total_pages']
latest_db_date = response.meta['latest_db_date']
if not date:
return
latest_date_page = dateparser.parse(date, ["%Y-%m-%d"])
if not total_pages:
return
if current_page == total_pages:
return
if latest_db_date:
if latest_db_date > latest_date_page:
return
next_page = current_page + 1
next_page_url = set_query_parameter(response.url, 'CurrentPage',
next_page)
print next_page_url
request = Request(url=next_page_url, callback=self.parse_reviews)
request.meta['product'] = product
request.meta['current_page'] = next_page
request.meta['total_pages'] = total_pages
request.meta['latest_db_date'] = latest_db_date
yield request
def parse(self, response):
if 'page' in response.meta:
page = response.meta['page']
else:
page = 1
review_selectors = response.xpath("//div[@id='stream']//div[contains(@class,'article_box_wrap')]")
review_url_xpath = "./a/@href"
for review_selector in review_selectors:
review_url = self.extract_all(review_selector.xpath(review_url_xpath))
review_url = get_full_url(response, review_url)
if review_url:
request = Request(review_url, callback=self.parse_review)
yield request
if self.continue_to_next_page(response):
next_page = page+1
next_page_url = set_query_parameter(response.url, 'page', next_page)
request.meta['page'] = next_page
if next_page_url:
request = Request(next_page_url, callback=self.parse)
yield request
def parse_products(self, response):
category = response.meta['category']
body = json.loads(response.body_as_unicode())
if body["totalResultSize"] == 0:
return
products = body.get('products', [])
for raw_product in products:
url = ''
pic_url = ''
for _url in raw_product['urls']:
url = _url['value']
if _url['key'] == "DESKTOP":
break
for _image in raw_product['images']:
pic_url = _image['url']
if _image['key'] == "L":
break
product_name = raw_product['title']
source_internal_id = raw_product['id']
manufacturer = raw_product.get(
'specsTag',
None) # specTags == manufacturer? YES! For reasons...
ean_value = raw_product['ean']
product = ProductItem.from_response(
response,
category=category,
product_name=product_name,
source_internal_id=source_internal_id,
url=url,
manufacturer=manufacturer,
pic_url=pic_url)
bol_id = self.product_id(product,
kind='bolcom_id',
value=source_internal_id)
if ean_value:
ean = self.product_id(product, kind='EAN', value=ean_value)
#go to review page
review_url = self.review_url % source_internal_id
request = Request(review_url, callback=self.parse_reviews)
request.meta['use_proxy'] = True
request.meta['product'] = product
request.meta['bol_id'] = bol_id
if ean:
request.meta['ean'] = ean
yield request
#go to "next" page
offset = get_query_parameter(response.url, 'offset')
offset = int(offset) + self.limit
if offset > body["totalResultSize"]:
return
next_page_url = set_query_parameter(response.url, 'offset', offset)
request = Request(next_page_url, callback=self.parse_products)
request.meta['category'] = category
yield request
def start_requests(self):
category_url = set_query_parameter(self.category_url, 'apikey',
self.open_api_key)
request = Request(category_url, self.parse_category)
return [request]
self.open_api_key)
category_url = set_query_parameter(category_url, 'ids',
_category['id'])
request = Request(category_url, self.parse_category)
request.meta['category_path'] = _path
yield request
else:
category = CategoryItem()
category['category_leaf'] = body['originalRequest']['category'][
'name']
category['category_string'] = body['originalRequest']['category'][
'id']
category['category_path'] = ' | '.join(category_path)
yield category
product_url = set_query_parameter(self.product_url, 'apikey',
self.open_api_key)
product_url = set_query_parameter(product_url, 'ids',
category['category_string'])
product_url = set_query_parameter(product_url, 'limit', self.limit)
product_url = set_query_parameter(product_url, 'offset', 0)
if not self.should_skip_category(category):
request = Request(product_url, callback=self.parse_products)
request.meta['category'] = category
yield request
def parse_products(self, response):
category = response.meta['category']
body = json.loads(response.body_as_unicode())
if body["totalResultSize"] == 0:
return
def parse_product(self, response):
category = response.meta['category']
items = extruct_helper.get_microdata_extruct_items(
response.body_as_unicode())
ean_xpath = '//a[@data-ean]/@data-ean'
brand_alt_xpath = "//meta[@property='product:brand']/@content"
product = list(
extruct_helper.get_products_microdata_extruct(
items, response, category))
if len(product) != 1:
request = self._retry(response.request)
yield request
return
product_dict = product[0]
product = product_dict['product']
if not product['ProductManufacturer']:
product['ProductManufacturer'] = self.extract_xpath(
response, brand_alt_xpath)
yield product
for product_id in product_dict['product_ids']:
yield product_id
ean_value = int(self.extract_xpath(response, ean_xpath))
if ean_value:
ean = self.product_id(product, kind='EAN', value=ean_value)
yield ean
first_page_review_xpath = "//ul[contains(@class, 'js-product-reviews-first')]/@data-href"
next_page_review_xpath = "//ul[contains(@class, 'js-product-reviews-remaining')]/@data-href"
reviews_per_page_xpath = "//ul[contains(@class, 'js-product-reviews-remaining')]/@data-paged-per-page"
total_reviews_xpath = "//ul[contains(@class, 'js-product-reviews-remaining')]/@data-paged-all"
initial_index_xpath = "//ul[contains(@class, 'js-product-reviews-remaining')]/@data-paged-current-index"
paging_parameter_xpath = "//ul[contains(@class, 'js-product-reviews-remaining')]/@data-paged-url-param"
first_page_review_url = self.extract_xpath(response,
first_page_review_xpath)
if first_page_review_url:
first_page_review_url = get_full_url(response,
first_page_review_url)
first_page_review_url = set_query_parameter(
first_page_review_url, 'sorting', 'LATEST')
next_page_review_url = self.extract_xpath(response,
next_page_review_xpath)
paging_meta = {}
if next_page_review_url:
last_review_db = get_latest_user_review_date_by_sii(
self.mysql_manager, self.spider_conf['source_id'],
product['source_internal_id'])
next_page_review_url = get_full_url(response,
next_page_review_url)
next_page_review_url = set_query_parameter(
next_page_review_url, 'sorting', 'LATEST')
reviews_per_page = self.extract_xpath(response,
reviews_per_page_xpath)
total_reviews = self.extract_xpath(response,
total_reviews_xpath)
current_index = self.extract_xpath(response,
initial_index_xpath)
paging_parameter = self.extract_xpath(response,
paging_parameter_xpath)
paging_meta = {
'next_page_review_url': next_page_review_url,
'reviews_per_page': int(reviews_per_page),
'total_reviews': int(total_reviews),
'current_index': int(current_index),
'paging_parameter': paging_parameter,
'last_review_db': last_review_db
}
meta = {'product': product}
headers = {
'Referer': response.url,
'X-Requested-With': 'XMLHttpRequest'
}
meta.update(paging_meta)
request = Request(first_page_review_url,
meta=meta,
headers=headers,
callback=self.parse_reviews)
yield request
def parse_reviews(self, response):
product = response.meta['product']
summary_xpath = ".//article/text()"
rating_xpath = ".//meta[@itemprop='rating']/@content"
title_xpath = ".//meta[@itemprop='summary']/@content"
date_xpath = ".//meta[@itemprop='dtreviewed']/@content"
author_xpath = ".//meta[@itemprop='reviewer']/@content"
pros_xpath = ".//div[contains(@class, 'review-features') and " \
"contains(@class, 'review-pros')]/text()"
cons_xpath = ".//div[contains(@class, 'review-features') and " \
"contains(@class, 'review-cons')]/text()"
review_selectors = response.xpath('//li')
for review_selector in review_selectors:
rating = self.extract_xpath(review_selector, rating_xpath)
title = self.extract_xpath(review_selector, title_xpath)
date = self.extract_xpath(review_selector, date_xpath)
author = self.extract_xpath(review_selector, author_xpath)
summary = self.extract_all_xpath(review_selector, summary_xpath)
pros = self.extract_all_xpath(review_selector, pros_xpath)
cons = self.extract_all_xpath(review_selector, cons_xpath)
pros = re.sub("[\s]+", ' ', pros)
cons = re.sub("[\s]+", ' ', cons)
review = ReviewItem.from_product(product=product,
title=title,
rating=rating,
tp='USER',
scale=5,
date=date,
summary=summary,
pros=pros,
cons=cons,
author=author)
yield review
last_date_in_page = dateparser.parse(date, ["%Y-%m-%d"])
next_page_url = response.meta.get('next_page_review_url', None)
if next_page_url:
paging_parameter = response.meta['paging_parameter']
current_index = response.meta['current_index']
reviews_per_page = response.meta['reviews_per_page']
total_reviews = response.meta['total_reviews']
last_review_db = response.meta['last_review_db']
if current_index >= total_reviews: #We reached the end
return
if last_review_db > last_date_in_page: #reached the end of new data
return
next_page_url = set_query_parameter(next_page_url,
paging_parameter,
current_index)
headers = {
'Referer': response.request.headers['Referer'],
'X-Requested-With':
response.request.headers['X-Requested-With']
}
meta = {
'next_page_review_url': next_page_url,
'reviews_per_page': reviews_per_page,
'total_reviews': total_reviews,
'current_index': current_index + reviews_per_page,
'paging_parameter': paging_parameter,
'last_review_db': last_review_db,
'product': product
}
request = Request(next_page_url,
meta=meta,
headers=headers,
callback=self.parse_reviews)
yield request
def parse_product(self, response):
# self._check_if_blocked(response)
category = response.meta['category']
manufacturer = response.meta['manufacturer']
base_url = get_base_url(response.url)
json_response = json.loads(response.body_as_unicode())
data = json_response["data"]
image_url_format = "https://s3.graphiq.com/sites/default/files" \
"/%s/media/images/%s"
product_url_format = "%s/l/%s/%s"
product_name_fields = [
"manufacturer_model", "manfacture_model", "company_product", "mm"
]
name_index = ""
amazon_asin_index = ""
upc_index = ""
app_id = data["app_id"]
page = data["page"]
results = data['recs']
id_index = data["head"].index("id")
encoded_title_index = data["head"].index("_encoded_title")
for name_field in product_name_fields:
try:
index = data["head"].index(name_field)
name_index = index
break
except ValueError:
continue
if not name_index:
raise Exception("Could not find product name in %s" % response.url)
image_index = data["head"].index("_i_1")
if 'amazon_asin' in data["head"]:
amazon_asin_index = data["head"].index("amazon_asin")
if 'UPC' in data["head"]:
upc_index = data["head"].index("UPC")
elif 'upc' in data["head"]:
upc_index = data["head"].index("upc")
for product_data in data["data"]:
image_name = ""
if len(product_data[image_index]) > 1:
image_name = product_data[image_index][0]
product = ProductItem()
product['OriginalCategoryName'] = category['category_path']
if image_name:
product['PicURL'] = image_url_format % (app_id, image_name)
product['TestUrl'] = product_url_format % (
base_url, product_data[id_index],
product_data[encoded_title_index])
product['ProductManufacturer'] = manufacturer
if name_index:
product['ProductName'] = product_data[name_index]
yield product
if upc_index:
if product_data[upc_index]:
upc = ProductIdItem()
upc['ProductName'] = product['ProductName']
upc['ID_kind'] = "UPC"
upc['ID_value'] = product_data[upc_index]
yield upc
if amazon_asin_index:
if product_data[amazon_asin_index]:
asin = ProductIdItem()
asin['ProductName'] = product['ProductName']
asin['ID_kind'] = "ASIN"
asin['ID_value'] = product_data[amazon_asin_index]
yield asin
number_of_pages = int(int(results) / 100)
if page < number_of_pages:
next_page_url = set_query_parameter(response.url, 'page', page + 1)
_headers = self.get_headers(response.url)
request = Request(next_page_url,
self.parse_product,
headers=_headers,
cookies={},
meta={
'dont_merge_cookies': True,
'dont_redirect': True
})
request.meta['manufacturer'] = manufacturer
request.meta['category'] = category
yield request
