def parse_post(self, response):
post = ItemLoader(item=ArabiaPostItem(), response=response)
post.default_output_processor = TakeFirst()
#post.add_xpath('id', '//*[@class="post_content replace_urls"]/@id', MapCompose(int), re=r'(\d+)')
post.add_xpath('id',
'//*[@class="short_url inputtext"]/@value',
MapCompose(int),
re=r'(\d+)')
post.add_xpath('title', '//*[@id="nav_title"]/a/text()')
post.add_xpath('up_votes',
'//*[@class="s_upvotes"]/text()',
MapCompose(int),
re=r'(\d+)')
post.add_xpath('down_votes',
'//*[@class="s_downvotes"]/text()',
MapCompose(int),
re=r'(\d+)')
post.add_xpath('points', '//*[@class="post_points ltr"]/text()',
MapCompose(int))
post.add_xpath('author_username',
'//*[@class="block username"]/text()')
post.add_xpath('author_fullname',
'//*[@class="block full_name"]/text()',
MapCompose(lambda value: value.replace(u'\xa0', u'')))
post.add_xpath('date', '//*[@class="icon-time"]/../text()')
post.add_xpath('community',
'//*[@class="icon-reorder"]/../a[1]/text()')
post.add_xpath('topics', '//*[@class="topic"]/text()',
MapCompose(string.strip))
post.add_xpath('url', '//*[@class="short_url inputtext"]/@value')
post.add_value(
'type',
'link' if post.get_xpath('//*[@id="nav_title"]/a/@rel',
TakeFirst()) == 'nofollow' else 'text')
if post.get_output_value('type') == 'link':
post.add_xpath('link', '//*[@id="nav_title"]/a/@href')
post.add_xpath('domain',
'//*[@class="post_domain"]/text()',
re=r'\((.+?)\)')
post.add_xpath('content', '//*[@class="post_content replace_urls"]/*',
Join('\n'))
post.add_value('item', 'post')
yield post.load_item()
comments = []
for row in response.selector.xpath(
'//*[contains(@class, "post_comment")]'):
comment = ItemLoader(item=ArabiaCommentItem(),
selector=row,
response=response)
comment.default_output_processor = TakeFirst()
comment.add_xpath('id', './@id', re=r'(\d+)')
comment.add_xpath('index',
'./@class',
MapCompose(int),
re=r'index(\d+)')
comment.add_value('post_id', post.get_output_value('id'))
#comment.add_value('parent_id', '')
comment.add_xpath('author_username',
'.//*[@class="comment_user"]/a/text()')
comment.add_xpath('date', './/*[@class="comment_date"]/text()')
comment.add_xpath('points',
'.//*[@class="comment_points ltr"]/text()')
comment.add_xpath(
'content',
'.//*[@class="post_content comment_content replace_urls"]/*',
Join('\n'))
#comment.add_xpath('url', './/*[@class="comment_short_url"]/a/@href')
comment.add_value(
'url', 'https://arabia.io/go/{0}/{1}'.format(
post.get_output_value('id'),
comment.get_output_value('id')))
comment.add_value('item', 'comment')
comments.append(comment)
for (index, comment) in enumerate(comments):
if comment.get_output_value('index') == 0:
comment.add_value('parent_id', 0)
continue
for comment_cursor in comments[:index][::-1]:
if comment_cursor.get_output_value(
'index') == comment.get_output_value('index') - 1:
comment.add_value('parent_id',
comment_cursor.get_output_value('id'))
break
for comment in comments:
yield comment.load_item()
def process_item(self, task_id):
feed = self.db.getRssFeeds(task_id)
self.log('processsing rss feed %s (%s)' % (feed['id'], feed['url']), log.INFO)
# parse feed
feed_data = feedparser.parse( feed['url'] )
self.log('reading %s feed items' % (len(feed_data['items'])), log.INFO)
# update last read time
self.db.updateRssFeedLastRead (task_id)
# For each item in feed
for item in feed_data['items']:
# if this item has not already been processed
if self.db.rssFeedItemExists(item['id']):
self.log('%s - feed item already exists - skipping' % (item['id']), log.INFO)
continue
# store the full item
l=ItemLoader (RssFeedItem())
l.add_value ('item_id', item['id'])
l.add_value ('content', psycopg2.Binary(pickle.dumps(item)))
#l.add_value ('content', pickle.dumps(item))
l.add_value ('feed_id', task_id)
yield l.load_item()
#feed_entry_id = uuid.uuid5(uuid.NAMESPACE_URL, str(item ['id']))
feed_entry_id = self.db.uuid5_str(name=str(item ['id']))
l=ItemLoader (FeedEntry())
l.add_value ('id', feed_entry_id)
l.add_value ('title', item['title'])
# l.add_value ('updated', format_datetime(item['updated_parsed']))
l.add_value ('incident_datetime', format_datetime(item['updated_parsed']))
if 'content' in item:
for c in item['content']:
l.add_value ('content', c['value'])
elif 'summary' in item:
l.add_value ('content', item['summary'])
embedded_fields = self.extractContentFields (l.get_output_value('content'))
pt = embedded_fields.get('location') or item.get('georss_point')
# print "em: '%s' geo: '%s'" % (embedded_fields.get('location'), item.get('georss_point'))
if not pt:
self.log('%s - No georeference found' % (item['id']), log.WARNING)
continue
pt = re.split ("[, ]+", pt)
l.add_value ('lat', pt[0])
l.add_value ('lng', pt[1])
l.add_value ('kml_url', embedded_fields.get('kml') or '')
for link in item['links']:
if link['rel'] == 'alternate':
l.add_value ('link', link['href'])
l.add_value ('source_id', feed['source_id'])
yield l.load_item()
if 'tags' in item:
for t in item['tags']:
l=ItemLoader (FeedEntryTag())
l.add_value ('feed_entry_id', feed_entry_id)
l.add_value ('tag', t['term'])
l.add_value ('comment', t['label'])
yield l.load_item()
l=ItemLoader (FeedEntryTag())
l.add_value ('feed_entry_id', feed_entry_id)
l.add_value ('tag', feed['tag'])
yield l.load_item()
# update task status
self.item_completed (task_id)
def process_item(self, task_id):
feed = self.db.getRssFeeds(task_id)
self.log('processsing rss feed %s (%s)' % (feed['id'], feed['url']),
log.INFO)
# parse feed
feed_data = feedparser.parse(feed['url'])
self.log('reading %s feed items' % (len(feed_data['items'])), log.INFO)
# update last read time
self.db.updateRssFeedLastRead(task_id)
# For each item in feed
for item in feed_data['items']:
# if this item has not already been processed
if self.db.rssFeedItemExists(item['id']):
self.log(
'%s - feed item already exists - skipping' % (item['id']),
log.INFO)
continue
# store the full item
l = ItemLoader(RssFeedItem())
l.add_value('item_id', item['id'])
l.add_value('content', psycopg2.Binary(pickle.dumps(item)))
#l.add_value ('content', pickle.dumps(item))
l.add_value('feed_id', task_id)
yield l.load_item()
#feed_entry_id = uuid.uuid5(uuid.NAMESPACE_URL, str(item ['id']))
feed_entry_id = self.db.uuid5_str(name=str(item['id']))
l = ItemLoader(FeedEntry())
l.add_value('id', feed_entry_id)
l.add_value('title', item['title'])
# l.add_value ('updated', format_datetime(item['updated_parsed']))
l.add_value('incident_datetime',
format_datetime(item['updated_parsed']))
if 'content' in item:
for c in item['content']:
l.add_value('content', c['value'])
elif 'summary' in item:
l.add_value('content', item['summary'])
embedded_fields = self.extractContentFields(
l.get_output_value('content'))
pt = embedded_fields.get('location') or item.get('georss_point')
# print "em: '%s' geo: '%s'" % (embedded_fields.get('location'), item.get('georss_point'))
if not pt:
self.log('%s - No georeference found' % (item['id']),
log.WARNING)
continue
pt = re.split("[, ]+", pt)
l.add_value('lat', pt[0])
l.add_value('lng', pt[1])
l.add_value('kml_url', embedded_fields.get('kml') or '')
for link in item['links']:
if link['rel'] == 'alternate':
l.add_value('link', link['href'])
l.add_value('source_id', feed['source_id'])
yield l.load_item()
if 'tags' in item:
for t in item['tags']:
l = ItemLoader(FeedEntryTag())
l.add_value('feed_entry_id', feed_entry_id)
l.add_value('tag', t['term'])
l.add_value('comment', t['label'])
yield l.load_item()
l = ItemLoader(FeedEntryTag())
l.add_value('feed_entry_id', feed_entry_id)
l.add_value('tag', feed['tag'])
yield l.load_item()
# update task status
self.item_completed(task_id)