def crawl_listing(self, url, ctx='', **kwargs):
if url.startswith('http://blogs.nordstrom.com'):
return
try:
res = requests.get(url, params={'sort': 'sale'})
except requests.exceptions.ConnectionError:
return
res.raise_for_status()
tree = lxml.html.fromstring(res.content)
listing_node = tree.cssselect('div.fashion-results')
if listing_node:
listing_node = listing_node[0]
else:
if tree.cssselect('div#brandsIndex'):
return
self.crawl_listing_of_no_leaf(tree, ctx=ctx, **kwargs)
return
product_nodes = listing_node.cssselect('div.row div.fashion-item')
if not product_nodes:
self.crawl_listing_of_no_leaf(tree, ctx=ctx, **kwargs)
return
category = Category.objects(key=kwargs.get('key')).first()
no_discount_num = 0 # sometimes no discount product occurs between the discount ones ordered by sale.
for product_node in product_nodes:
key = product_node.get('id')
if not key:
common_failed.send(sender=ctx, url=url, reason='listing product has no id')
continue
try:
info_node = product_node.cssselect('div.info')[0]
a_node = info_node.cssselect('a')[0]
title = a_node.text.strip()
price = None; listprice = None
price_nodes = info_node.cssselect(".price")
for price_node in price_nodes:
if 'regular' in price_node.get('class'):
listprice = price_node.text
elif 'sale' in price_node.get('class'):
price = price_node.text
if price is None or listprice is None:
no_discount_num += 1
if no_discount_num < 3:
continue
# common_failed.send(sender=ctx, url=url, \
# reason='listing product %s.%s cannot crawl price info -> %s / %s' % (key, title, price, listprice))
return
combine_url = a_node.get('href')
if not combine_url:
common_failed.send(sender=ctx, url=url, reason='listing product %s.%s cannot crawl combine_url' % (key, title))
continue
match = re.search(r'https?://.+', combine_url)
if not match:
combine_url = 'http://shop.nordstrom.com%s' % (combine_url)
except IndexError:
print traceback.format_exc()
common_failed.send(sender=ctx, url=url, reason='listing product %s -> %s' % (key, traceback.format_exc()))
continue
is_new = False; is_updated = False
product = Product.objects(key=key).first()
if not product:
is_new = True
product = Product(key=key)
product.updated = False
product.event_type = False
if combine_url and combine_url != product.combine_url:
product.combine_url = combine_url
is_updated = True
if title and title != product.title:
product.title = title
is_updated = True
if price and price != product.price:
product.price = price
is_updated = True
if listprice and listprice != product.listprice:
product.listprice = listprice
is_updated = True
if category.cats and set(category.cats).difference(product.dept):
product.dept = list(set(category.cats) | set(product.dept or []))
is_updated = True
if category.key not in product.category_key:
product.category_key.append(category.key)
is_updated = True
if is_updated:
product.list_update_time = datetime.utcnow()
# To pick the product which fit our needs, such as a certain discount, brand, dept etc.
selected = Picker(site='nordstrom').pick(product)
if not selected:
continue
product.hit_time = datetime.utcnow()
product.save()
# print product.title
# print product.combine_url
# print product.listprice
# print product.price
# print is_new
# print is_updated
# print
common_saved.send(sender=ctx, obj_type='Product', key=product.key, url=product.combine_url, \
is_new=is_new, is_updated=((not is_new) and is_updated) )
# Go to the next page to keep on crawling.
try:
arrow_node = tree.cssselect('div.fashion-results-header div.fashion-results-pager ul.arrows li.next')[0]
except IndexError:
common_failed.send(sender=ctx, url=url, reason=traceback.format_exc())
return
next_page = arrow_node.cssselect('a')[0].get('href') \
if 'disabled' not in arrow_node.get('class') else None
if next_page:
print next_page
self.crawl_listing(url=next_page, ctx=ctx, **kwargs)
def crawl_listing(self, url, ctx='', **kwargs):
res = requests.get(url)
res.raise_for_status()
tree = lxml.html.fromstring(res.content)
category = Category.objects(key=kwargs.get('key')).first()
if not category:
common_failed.send(sender=ctx, url=url, reason='category %s not found in db' % kwargs.get('key'))
return
product_nodes = tree.cssselect('div#searchResults a')
for product_node in product_nodes:
price = None; listprice = None
price = product_node.cssselect('.price-6pm')[0].text
listprice_node = product_node.cssselect('.discount')
listprice = ''.join(listprice_node[0].xpath('text()')) if listprice_node else None
# eliminate products of no discountIndexError:
if price is None or listprice is None:
# common_failed.send(sender=ctx, url=url, \
# reason='listing product %s.%s cannot crawl price info -> %s / %s' % (key, title, price, listprice))
continue
key = product_node.get('data-product-id')
if not key:
common_failed.send(sender=ctx, url=url, reason='listing product has no key')
continue
combine_url = product_node.get('href')
key = '%s_%s' % (key, combine_url.split('/')[-1])
match = re.search(r'https?://.+', combine_url)
if not match:
combine_url = '%s%s' % (HOST, combine_url)
brand = product_node.cssselect('.brandName')[0].text.strip()
title = product_node.cssselect('.productName')[0].text.strip()
is_new = False; is_updated = False
product = Product.objects(key=key).first()
if not product:
is_new = True
product = Product(key=key)
product.updated = False
product.event_type = False
if title and title != product.title:
product.title = title
is_updated = True
if brand and brand != product.brand:
product.brand = brand
is_updated = True
if combine_url and combine_url != product.combine_url:
product.combine_url = combine_url
is_updated = True
if price and price != product.price:
product.price = price
is_updated = True
if listprice and listprice != product.listprice:
product.listprice = listprice
is_updated = True
if category.cats and set(category.cats).difference(product.dept):
product.dept = list(set(category.cats) | set(product.dept or []))
is_updated = True
if category.key not in product.category_key:
product.category_key.append(category.key)
is_updated = True
if is_updated:
product.list_update_time = datetime.utcnow()
# To pick the product which fit our needs, such as a certain discount, brand, dept etc.
selected = Picker(site='6pm').pick(product)
if not selected:
continue
product.hit_time = datetime.utcnow()
product.save()
common_saved.send(sender=ctx, obj_type='Product', key=product.key, url=product.combine_url, \
is_new=is_new, is_updated=((not is_new) and is_updated) )
print product.key; print product.brand; print product.title; \
print product.price, ' / ', product.listprice; print product.combine_url; \
print product.dept; print
# Go to the next page to keep on crawling.
next_page = None
page_node = tree.cssselect('div.pagination')
if not page_node:
return
last_node =page_node[0].cssselect('.last')
if last_node:
next_page = page_node[0].cssselect('a')[-1].get('href')
if next_page:
match = re.search(r'https?://.+', next_page)
if not match:
next_page = '%s%s' % (HOST, next_page)
print next_page
self.crawl_listing(url=next_page, ctx=ctx, **kwargs)
def crawl_listing(self, url, ctx='', **kwargs):
res = requests.get(url, params={'Ns': 'P_sale_flag|1'})
res.raise_for_status()
tree = lxml.html.fromstring(res.content)
category = Category.objects(key=kwargs.get('key')).first()
if not category:
print 'Category does not exist'
common_failed.send(sender=ctx, url=url, reason='Category does not exist -> {0} .'.format(kwargs))
return
product_nodes = tree.cssselect('div#product-container div');
no_discount_num = 0 # sometimes no discount product occurs between the discount ones ordered by sale.
for product_node in product_nodes:
if not product_node.get('id') or 'product' not in product_node.get('id').lower():
continue
key = product_node.get('id')
info_node = product_node.cssselect('div.product-text a')[0]
price = None; listprice = None
listprice_node = info_node.cssselect('span.product-price')
price_node = info_node.cssselect('span.product-sale-price')
if listprice_node:
listprice = ''.join(listprice_node[0].xpath('.//text()')).strip()
if price_node:
price = ''.join(price_node[0].xpath('.//text()')).strip()
if price is None or listprice is None:
no_discount_num += 1
if no_discount_num < 3:
continue
return
no_discount_num = 0
brand = info_node.cssselect('p span.product-designer-name')[0].text
if brand:
brand = brand.strip()
title = info_node.cssselect('p.product-description')[0].text.strip()
combine_url = info_node.get('href')
is_new = False; is_updated = False
product = Product.objects(key=key).first()
if not product:
is_new = True
product = Product(key=key)
product.updated = False
product.event_type = False
if title and title != product.title:
product.title = title
is_updated = True
product.update_history['title'] = datetime.utcnow()
if brand and brand != product.brand:
product.brand = brand
is_updated = True
if combine_url and combine_url != product.combine_url:
product.combine_url = combine_url
is_updated = True
product.update_history['combine_url'] = datetime.utcnow()
if price and price != product.price:
product.price = price
is_updated = True
if listprice and listprice != product.listprice:
product.listprice = listprice
is_updated = True
if category.cats and set(category.cats).difference(product.dept):
product.dept = list(set(category.cats) | set(product.dept or []))
is_updated = True
if category.key not in product.category_key:
product.category_key.append(category.key)
is_updated = True
if is_updated:
product.list_update_time = datetime.utcnow()
# To pick the product which fit our needs, such as a certain discount, brand, dept etc.
selected = Picker(site='saksfifthavenue').pick(product)
if not selected:
continue
product.hit_time = datetime.utcnow()
product.save()
# print product.brand; print product.title; print product.combine_url; print product.listprice, ' / ', product.price; print is_new; print is_updated
# print
common_saved.send(sender=ctx, obj_type='Product', key=product.key, url=product.combine_url, \
is_new=is_new, is_updated=((not is_new) and is_updated) )
# Go to the next page to keep on crawling.
next_page = None
page_nodes = tree.cssselect('div.pagination-container ol.pa-page-number li a')
for page_node in page_nodes:
if page_node.get('class') == 'next':
href = page_node.get('href')
match = re.search(r'https?://.+', href)
next_page = href if match else '{0}/{1}'.format(HOST, href)
break
if next_page:
print next_page
self.crawl_listing(url=next_page, ctx=ctx, **kwargs)
