119 lines
4.0 KiB
Python
119 lines
4.0 KiB
Python
import asyncio
|
|
|
|
from sqlalchemy import select, event
|
|
import json
|
|
|
|
from orm.author import Author, AuthorFollower
|
|
from orm.topic import Topic, TopicFollower
|
|
from resolvers.stat import get_authors_with_stat, get_topics_with_stat
|
|
from services.rediscache import redis
|
|
|
|
|
|
DEFAULT_FOLLOWS = {
|
|
'topics': [],
|
|
'authors': [],
|
|
'communities': [{'slug': 'discours', 'name': 'Дискурс', 'id': 1, 'pic': ''}],
|
|
}
|
|
|
|
|
|
async def update_author_cache(author: Author, ttl=25 * 60 * 60):
|
|
payload = json.dumps(author.dict())
|
|
await redis.execute('SETEX', f'user:{author.user}:author', ttl, payload)
|
|
await redis.execute('SETEX', f'id:{author.user}:author', ttl, payload)
|
|
|
|
|
|
@event.listens_for(Author, 'after_insert')
|
|
@event.listens_for(Author, 'after_update')
|
|
def after_author_update(mapper, connection, author: Author):
|
|
asyncio.create_task(update_author_cache(author))
|
|
|
|
|
|
@event.listens_for(TopicFollower, 'after_insert')
|
|
def after_topic_follower_insert(mapper, connection, target: TopicFollower):
|
|
asyncio.create_task(
|
|
handle_topic_follower_change(connection, target.topic, target.follower, True)
|
|
)
|
|
|
|
|
|
@event.listens_for(TopicFollower, 'after_delete')
|
|
def after_topic_follower_delete(mapper, connection, target: TopicFollower):
|
|
asyncio.create_task(
|
|
handle_topic_follower_change(connection, target.topic, target.follower, False)
|
|
)
|
|
|
|
|
|
@event.listens_for(AuthorFollower, 'after_insert')
|
|
def after_author_follower_insert(mapper, connection, target: AuthorFollower):
|
|
asyncio.create_task(
|
|
handle_author_follower_change(connection, target.author, target.follower, True)
|
|
)
|
|
|
|
|
|
@event.listens_for(AuthorFollower, 'after_delete')
|
|
def after_author_follower_delete(mapper, connection, target: AuthorFollower):
|
|
asyncio.create_task(
|
|
handle_author_follower_change(connection, target.author, target.follower, False)
|
|
)
|
|
|
|
|
|
async def update_follows_for_user(connection, user_id, entity_type, entity: dict, is_insert):
|
|
redis_key = f'user:{user_id}:follows'
|
|
follows_str = await redis.get(redis_key)
|
|
if follows_str:
|
|
follows = json.loads(follows_str)
|
|
else:
|
|
follows = DEFAULT_FOLLOWS
|
|
if is_insert:
|
|
follows[f'{entity_type}s'].append(entity)
|
|
else:
|
|
# Remove the entity from follows
|
|
follows[f'{entity_type}s'] = [e for e in follows[f'{entity_type}s'] if e['id'] != entity['id']]
|
|
await redis.execute('SET', redis_key, json.dumps(follows))
|
|
|
|
|
|
async def handle_author_follower_change(connection, author_id: int, follower_id: int, is_insert: bool):
|
|
author_query = select(Author).filter(Author.id == author_id)
|
|
[author, ] = get_authors_with_stat(author_query, ratings=True)
|
|
follower_query = select(Author).filter(Author.id == follower_id)
|
|
follower = get_authors_with_stat(follower_query, ratings=True)
|
|
if follower and author:
|
|
_ = asyncio.create_task(update_author_cache(author))
|
|
_ = asyncio.create_task(update_author_cache(follower))
|
|
await update_follows_for_user(
|
|
connection,
|
|
follower.user,
|
|
'author',
|
|
{
|
|
'id': author.id,
|
|
'name': author.name,
|
|
'slug': author.slug,
|
|
'pic': author.pic,
|
|
'bio': author.bio,
|
|
'stat': author.stat,
|
|
},
|
|
is_insert,
|
|
)
|
|
|
|
|
|
async def handle_topic_follower_change(connection, topic_id: int, follower_id: int, is_insert: bool):
|
|
q = select(Topic).filter(Topic.id == topic_id)
|
|
topics = get_topics_with_stat(q)
|
|
topic = topics[0]
|
|
follower_query = select(Author).filter(Author.id == follower_id)
|
|
follower = get_authors_with_stat(follower_query, ratings=True)
|
|
if follower and topic:
|
|
_ = asyncio.create_task(update_author_cache(follower))
|
|
await update_follows_for_user(
|
|
connection,
|
|
follower.user,
|
|
'topic',
|
|
{
|
|
'id': topic.id,
|
|
'title': topic.title,
|
|
'slug': topic.slug,
|
|
'body': topic.body,
|
|
'stat': topic.stat,
|
|
},
|
|
is_insert,
|
|
)
|