118 lines
5.2 KiB
Python
118 lines
5.2 KiB
Python
import asyncio
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import json
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from sqlalchemy import and_, join, select
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from cache.cache import cache_author, cache_topic
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from orm.author import Author, AuthorFollower
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from orm.shout import Shout, ShoutAuthor, ShoutReactionsFollower, ShoutTopic
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from orm.topic import Topic, TopicFollower
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from resolvers.stat import get_with_stat
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from services.db import local_session
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from services.redis import redis
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from utils.encoders import CustomJSONEncoder
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from utils.logger import root_logger as logger
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# Предварительное кеширование подписчиков автора
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async def precache_authors_followers(author_id, session):
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authors_followers = set()
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followers_query = select(AuthorFollower.follower).where(AuthorFollower.author == author_id)
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result = session.execute(followers_query)
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authors_followers.update(row[0] for row in result if row[0])
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followers_payload = json.dumps(list(authors_followers), cls=CustomJSONEncoder)
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await redis.execute("SET", f"author:followers:{author_id}", followers_payload)
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# Предварительное кеширование подписок автора
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async def precache_authors_follows(author_id, session):
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follows_topics_query = select(TopicFollower.topic).where(TopicFollower.follower == author_id)
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follows_authors_query = select(AuthorFollower.author).where(AuthorFollower.follower == author_id)
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follows_shouts_query = select(ShoutReactionsFollower.shout).where(ShoutReactionsFollower.follower == author_id)
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follows_topics = {row[0] for row in session.execute(follows_topics_query) if row[0]}
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follows_authors = {row[0] for row in session.execute(follows_authors_query) if row[0]}
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follows_shouts = {row[0] for row in session.execute(follows_shouts_query) if row[0]}
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topics_payload = json.dumps(list(follows_topics), cls=CustomJSONEncoder)
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authors_payload = json.dumps(list(follows_authors), cls=CustomJSONEncoder)
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shouts_payload = json.dumps(list(follows_shouts), cls=CustomJSONEncoder)
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await asyncio.gather(
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redis.execute("SET", f"author:follows-topics:{author_id}", topics_payload),
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redis.execute("SET", f"author:follows-authors:{author_id}", authors_payload),
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redis.execute("SET", f"author:follows-shouts:{author_id}", shouts_payload),
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)
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# Предварительное кеширование авторов тем
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async def precache_topics_authors(topic_id: int, session):
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topic_authors_query = (
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select(ShoutAuthor.author)
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.select_from(join(ShoutTopic, Shout, ShoutTopic.shout == Shout.id))
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.join(ShoutAuthor, ShoutAuthor.shout == Shout.id)
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.filter(
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and_(
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ShoutTopic.topic == topic_id,
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Shout.published_at.is_not(None),
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Shout.deleted_at.is_(None),
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)
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)
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)
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topic_authors = {row[0] for row in session.execute(topic_authors_query) if row[0]}
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authors_payload = json.dumps(list(topic_authors), cls=CustomJSONEncoder)
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await redis.execute("SET", f"topic:authors:{topic_id}", authors_payload)
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# Предварительное кеширование подписчиков тем
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async def precache_topics_followers(topic_id: int, session):
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followers_query = select(TopicFollower.follower).where(TopicFollower.topic == topic_id)
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topic_followers = {row[0] for row in session.execute(followers_query) if row[0]}
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followers_payload = json.dumps(list(topic_followers), cls=CustomJSONEncoder)
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await redis.execute("SET", f"topic:followers:{topic_id}", followers_payload)
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async def precache_data():
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try:
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# cache reset
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await redis.execute("FLUSHDB")
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logger.info("redis flushed")
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with local_session() as session:
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# topics
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q = select(Topic).where(Topic.community == 1)
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topics = get_with_stat(q)
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for topic in topics:
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topic_dict = topic.dict() if hasattr(topic, "dict") else topic
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await cache_topic(topic_dict)
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await asyncio.gather(
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precache_topics_followers(topic_dict["id"], session),
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precache_topics_authors(topic_dict["id"], session),
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)
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logger.info(f"{len(topics)} topics and their followings precached")
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# authors
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authors = get_with_stat(select(Author).where(Author.user.is_not(None)))
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logger.debug(f"{len(authors)} authors found in database")
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for author in authors:
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if isinstance(author, Author):
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profile = author.dict()
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author_id = profile.get("id")
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user_id = profile.get("user", "").strip()
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if author_id and user_id:
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await cache_author(profile)
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await asyncio.gather(
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precache_authors_followers(author_id, session), precache_authors_follows(author_id, session)
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)
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else:
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logger.error(f"fail caching {author}")
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logger.info(f"{len(authors)} authors and their followings precached")
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except Exception as exc:
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import traceback
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traceback.print_exc()
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logger.error(f"Error in precache_data: {exc}")
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