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instagram_crawler.py
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instagram_crawler.py
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"""Instagram Crawler
"""
import os
import logging
from pymongo import MongoClient
from dotenv import load_dotenv, find_dotenv
from instagram_api import Instagram
load_dotenv(find_dotenv())
class InstagramCrawler:
"""Instagram Crawler class
"""
def __init__(self, debug=False):
if debug:
logging.basicConfig(level=logging.DEBUG)
else:
logging.basicConfig(level=logging.INFO)
self.logger = logging.getLogger(__name__)
self.debug = debug
self.instagram = Instagram(True)
self.logger.info('Instagram Crawler instance created!')
self.keyword = '' # keywork the crawler is searching for currently
DB_HOST = os.getenv('DB_HOST')
DB_USERNAME = os.getenv('DB_USERNAME')
DB_PASSWORD = os.getenv('DB_PASSWORD')
DB_PORT = os.getenv('DB_PORT')
self.mongo_client = MongoClient(f'mongodb://{DB_USERNAME}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}')
def _search_hashtags(self, keyword):
"""search all available hashtags including specified keyword
Arguments:
keyword {str} -- keyword to search hashtags
Returns:
List -- list of hashtags or None when search fails
"""
self.keyword = keyword.lower() # store last searched keyword
self.logger.info(f'called search_hashtags with {keyword}')
if not self.instagram.search(keyword): # todo: load more of hashtags
return None
result = self.instagram.LastJson
hashtags = [hashtag['hashtag']['name'] for hashtag in result['hashtags']]
return hashtags
def _get_owners_of_hashtags(self, hashtags):
"""get list of owner id related with
Arguments:
hashtags {List} -- list of hashtags
Returns:
List -- list of owner id
"""
self.logger.info(f"called get_owners_of_hashtags")
owner_id_list = []
for hashtag in hashtags: # extract owner id list related with each hashtag
if not self.instagram.get_media_feed_by_hashtag(hashtag):
continue
result = self.instagram.LastJson
owner_id_list += [post['node']['owner']['id'] for post in result['graphql']['hashtag']['edge_hashtag_to_top_posts']['edges']]
if self.debug:
break
return owner_id_list
def _set_engagement_rate(self, user):
"""set engagement_rate field into user
Arguments:
user {Dict} -- full user profile dictionary before pre-processing to calculate engagement_rate
Returns:
float -- engagement_rate
"""
self.logger.info(f"called set_engagement_rate")
follower_count = user['followed_by']['count']
total_engagement_rate = 0
average_engagement_rate = 0
post_count = 10
for i in range(0, 10):
if i >= len(user['media']['nodes']):
post_count = i
break
post = user['media']['nodes'][i]
total_engagement_rate += (post['comments']['count'] + post['likes']['count'] + (post['video_views'] if post['is_video'] else 0)) / follower_count
average_engagement_rate = total_engagement_rate / post_count
return round(average_engagement_rate, 2)
def _get_user(self, user_id):
"""get compatible user for socian
Arguments:
user_id {str} -- Instagram user id
Returns:
Dict -- socian compatible user dictionary
"""
self.logger.info(f"called get_user with {user_id}")
if not self.instagram.get_user(user_id):
return None
result = self.instagram.LastJson
username = result['user']['username']
if not self.instagram.get_media_feed_by_user(username):
return None
return self._process_user(self.instagram.LastJson['user'])
def _process_user(self, user):
"""pre-process user data before stores it to database for schema matching
Arguments:
user {Dict} -- user dictionary to process
Returns:
Dict -- processed user dictionary
"""
self.logger.info(f"called process_user")
engagement_rate = self._set_engagement_rate(user)
processed_user = {
"username": user["username"],
"platform_id": user["id"],
"platform": "instagram",
"display_name": user["full_name"],
"followers": user["followed_by"]["count"],
"following": user["follows"]["count"],
"profile_picture": user["profile_pic_url_hd"],
"profile_picture_thumbnail": user["profile_pic_url"],
"bio": user["biography"],
"engagement_rate": engagement_rate,
"location_lat": 0,
"location_long": 0,
"profile_score": "TBD",
"post_history": []
}
posts = user['media']['nodes']
if not isinstance(posts, list):
return processed_user
recent_posts = []
for i, post in enumerate(posts):
if i >= 3:
break
recent_posts.append(post)
processed_user['post_history'] = recent_posts
return processed_user
def _store_users(self, users):
"""store user data list to database
Arguments:
users {List} -- user list
"""
self.logger.info(f"called store_users")
aggregation = self.mongo_client.aggregation
for user in users:
try:
old_user = aggregation.profiles.find_one({'username': user['username']})
if old_user is not None:
# add keyword to existing keywords field
try:
keywords = old_user['keywords']
if self.keyword not in keywords:
keywords.append(self.keyword)
except KeyError:
keywords = [self.keyword]
else:
keywords = [self.keyword]
user['keywords'] = keywords
aggregation.profiles.find_one_and_replace({'username': user['username']}, user, None, None, True)
except Exception as e:
self.logger.exception(f"db error: {str(e)}")
continue
def start(self):
"""start crawler with keyword list
"""
# get keywords to scrap
aggregation = self.mongo_client.aggregation
keywords = [keyword['keyword'] for keyword in list(aggregation.keywords.find(projection={'_id': False}))]
# scrapping profiles through keywords
for keyword in keywords:
hashtags = self._search_hashtags(keyword)
if hashtags is None:
continue
owners = self._get_owners_of_hashtags(hashtags)
users = [self._get_user(user_id) for user_id in owners]
self._store_users(users)
if self.debug:
break