refactored-starting
Some checks failed
Deploy on push / deploy (push) Failing after 9s

This commit is contained in:
2024-08-07 09:51:09 +03:00
parent 60a56fd098
commit d4982017f6
10 changed files with 220 additions and 323 deletions

181
cache/cache.py vendored
View File

@@ -1,122 +1,58 @@
import asyncio
import json
from typing import List
from sqlalchemy import select, join, and_
from orm.author import Author, AuthorFollower
from orm.topic import Topic, TopicFollower
from orm.shout import Shout, ShoutAuthor, ShoutTopic
from services.db import local_session
from utils.encoders import CustomJSONEncoder
from cache.rediscache import redis
from services.redis import redis
from utils.logger import root_logger as logger
DEFAULT_FOLLOWS = {
"topics": [],
"authors": [],
"shouts": [],
"communities": [{"id": 1, "name": "Дискурс", "slug": "discours", "pic": ""}],
}
# Кэширование данных темы
# Cache topic data
async def cache_topic(topic: dict):
payload = json.dumps(topic, cls=CustomJSONEncoder)
# Одновременное кэширование по id и slug для быстрого доступа
# Cache by id and slug for quick access
await asyncio.gather(
redis.execute("SET", f"topic:id:{topic['id']}", payload),
redis.execute("SET", f"topic:slug:{topic['slug']}", payload),
)
# Кэширование данных автора
# Cache author data
async def cache_author(author: dict):
payload = json.dumps(author, cls=CustomJSONEncoder)
# Кэширование данных автора по user и id
# Cache author data by user and id
await asyncio.gather(
redis.execute("SET", f"author:user:{author['user'].strip()}", str(author["id"])),
redis.execute("SET", f"author:id:{author['id']}", payload),
)
async def get_cached_topic(topic_id: int):
"""
Получает информацию о теме из кэша или базы данных.
Args:
topic_id (int): Идентификатор темы.
Returns:
dict: Данные темы в формате словаря или None, если тема не найдена.
"""
# Ключ для кэширования темы в Redis
topic_key = f"topic:id:{topic_id}"
cached_topic = await redis.get(topic_key)
if cached_topic:
return json.loads(cached_topic)
# Если данных о теме нет в кэше, загружаем из базы данных
with local_session() as session:
topic = session.execute(select(Topic).where(Topic.id == topic_id)).scalar_one_or_none()
if topic:
# Кэшируем полученные данные
topic_dict = topic.dict()
await redis.set(topic_key, json.dumps(topic_dict, cls=CustomJSONEncoder))
return topic_dict
return None
async def get_cached_shout_authors(shout_id: int):
"""
Retrieves a list of authors for a given shout from the cache or database if not present.
Args:
shout_id (int): The ID of the shout for which to retrieve authors.
Returns:
List[dict]: A list of dictionaries containing author data.
"""
# Attempt to retrieve cached author IDs for the shout
rkey = f"shout:authors:{shout_id}"
cached_author_ids = await redis.get(rkey)
if cached_author_ids:
author_ids = json.loads(cached_author_ids)
else:
# If not in cache, fetch from the database and cache the result
with local_session() as session:
query = (
select(ShoutAuthor.author)
.where(ShoutAuthor.shout == shout_id)
.join(Author, ShoutAuthor.author == Author.id)
.filter(Author.deleted_at.is_(None))
)
author_ids = [author_id for (author_id,) in session.execute(query).all()]
await redis.execute("set", rkey, json.dumps(author_ids))
# Retrieve full author details from cached IDs
if author_ids:
authors = await get_cached_authors_by_ids(author_ids)
logger.debug(f"Shout#{shout_id} authors fetched and cached: {len(authors)} authors found.")
return authors
return []
# Кэширование данных о подписках
# Cache follows data
async def cache_follows(follower_id: int, entity_type: str, entity_id: int, is_insert=True):
key = f"author:follows-{entity_type}s:{follower_id}"
follows_str = await redis.get(key)
follows = json.loads(follows_str) if follows_str else []
follows = json.loads(follows_str) if follows_str else DEFAULT_FOLLOWS[entity_type]
if is_insert:
if entity_id not in follows:
follows.append(entity_id)
else:
follows = [eid for eid in follows if eid != entity_id]
await redis.execute("set", key, json.dumps(follows, cls=CustomJSONEncoder))
update_follower_stat(follower_id, entity_type, len(follows))
await update_follower_stat(follower_id, entity_type, len(follows))
# Обновление статистики подписчика
# Update follower statistics
async def update_follower_stat(follower_id, entity_type, count):
follower_key = f"author:id:{follower_id}"
follower_str = await redis.get(follower_key)
@@ -126,13 +62,13 @@ async def update_follower_stat(follower_id, entity_type, count):
await cache_author(follower)
# Получение автора из кэша
# Get author from cache
async def get_cached_author(author_id: int):
author_key = f"author:id:{author_id}"
result = await redis.get(author_key)
if result:
return json.loads(result)
# Загрузка из базы данных, если не найдено в кэше
# Load from database if not found in cache
with local_session() as session:
author = session.execute(select(Author).where(Author.id == author_id)).scalar_one_or_none()
if author:
@@ -141,13 +77,41 @@ async def get_cached_author(author_id: int):
return None
# Получение темы по slug из кэша
# Function to get cached topic
async def get_cached_topic(topic_id: int):
"""
Fetch topic data from cache or database by id.
Args:
topic_id (int): The identifier for the topic.
Returns:
dict: Topic data or None if not found.
"""
topic_key = f"topic:id:{topic_id}"
cached_topic = await redis.get(topic_key)
if cached_topic:
return json.loads(cached_topic)
# If not in cache, fetch from the database
with local_session() as session:
topic = session.execute(select(Topic).where(Topic.id == topic_id)).scalar_one_or_none()
if topic:
topic_dict = topic.dict()
await redis.set(topic_key, json.dumps(topic_dict, cls=CustomJSONEncoder))
return topic_dict
return None
# Get topic by slug from cache
async def get_cached_topic_by_slug(slug: str):
topic_key = f"topic:slug:{slug}"
result = await redis.get(topic_key)
if result:
return json.loads(result)
# Загрузка из базы данных, если не найдено в кэше
# Load from database if not found in cache
with local_session() as session:
topic = session.execute(select(Topic).where(Topic.slug == slug)).scalar_one_or_none()
if topic:
@@ -156,13 +120,13 @@ async def get_cached_topic_by_slug(slug: str):
return None
# Получение списка авторов по ID из кэша
# Get list of authors by ID from cache
async def get_cached_authors_by_ids(author_ids: List[int]) -> List[dict]:
# Одновременное получение данных всех авторов
# Fetch all author data concurrently
keys = [f"author:id:{author_id}" for author_id in author_ids]
results = await asyncio.gather(*(redis.get(key) for key in keys))
authors = [json.loads(result) if result else None for result in results]
# Загрузка отсутствующих авторов из базы данных и кэширование
# Load missing authors from database and cache
missing_indices = [index for index, author in enumerate(authors) if author is None]
if missing_indices:
missing_ids = [author_ids[index] for index in missing_indices]
@@ -170,19 +134,21 @@ async def get_cached_authors_by_ids(author_ids: List[int]) -> List[dict]:
query = select(Author).where(Author.id.in_(missing_ids))
missing_authors = session.execute(query).scalars().all()
await asyncio.gather(*(cache_author(author.dict()) for author in missing_authors))
authors = [author.dict() for author in missing_authors]
for index, author in zip(missing_indices, missing_authors):
authors[index] = author.dict()
return authors
# Get cached topic followers
async def get_cached_topic_followers(topic_id: int):
# Попытка извлечь кэшированные данные
# Attempt to retrieve cached data
cached = await redis.get(f"topic:followers:{topic_id}")
if cached:
followers = json.loads(cached)
logger.debug(f"Cached followers for topic#{topic_id}: {len(followers)}")
return followers
# Загрузка из базы данных и кэширование результатов
# Load from database and cache results
with local_session() as session:
followers_ids = [
f[0]
@@ -196,8 +162,9 @@ async def get_cached_topic_followers(topic_id: int):
return followers
# Get cached author followers
async def get_cached_author_followers(author_id: int):
# Проверяем кэш на наличие данных
# Check cache for data
cached = await redis.get(f"author:followers:{author_id}")
if cached:
followers_ids = json.loads(cached)
@@ -205,7 +172,7 @@ async def get_cached_author_followers(author_id: int):
logger.debug(f"Cached followers for author#{author_id}: {len(followers)}")
return followers
# Запрос в базу данных если кэш пуст
# Query database if cache is empty
with local_session() as session:
followers_ids = [
f[0]
@@ -219,13 +186,14 @@ async def get_cached_author_followers(author_id: int):
return followers
# Get cached follower authors
async def get_cached_follower_authors(author_id: int):
# Попытка получить авторов из кэша
# Attempt to retrieve authors from cache
cached = await redis.get(f"author:follows-authors:{author_id}")
if cached:
authors_ids = json.loads(cached)
else:
# Запрос авторов из базы данных
# Query authors from database
with local_session() as session:
authors_ids = [
a[0]
@@ -241,13 +209,14 @@ async def get_cached_follower_authors(author_id: int):
return authors
# Get cached follower topics
async def get_cached_follower_topics(author_id: int):
# Попытка получить темы из кэша
# Attempt to retrieve topics from cache
cached = await redis.get(f"author:follows-topics:{author_id}")
if cached:
topics_ids = json.loads(cached)
else:
# Загрузка тем из базы данных и их кэширование
# Load topics from database and cache them
with local_session() as session:
topics_ids = [
t[0]
@@ -270,30 +239,31 @@ async def get_cached_follower_topics(author_id: int):
return topics
# Get author by user ID from cache
async def get_cached_author_by_user_id(user_id: str):
"""
Получает информацию об авторе по его user_id, сначала проверяя кэш, а затем базу данных.
Retrieve author information by user_id, checking the cache first, then the database.
Args:
user_id (str): Идентификатор пользователя, по которому нужно получить автора.
user_id (str): The user identifier for which to retrieve the author.
Returns:
dict: Словарь с данными автора или None, если автор не найден.
dict: Dictionary with author data or None if not found.
"""
# Пытаемся найти ID автора по user_id в кэше Redis
# Attempt to find author ID by user_id in Redis cache
author_id = await redis.get(f"author:user:{user_id.strip()}")
if author_id:
# Если ID найден, получаем полные данные автора по его ID
# If ID is found, get full author data by ID
author_data = await redis.get(f"author:id:{author_id}")
if author_data:
return json.loads(author_data)
# Если данные в кэше не найдены, выполняем запрос к базе данных
# If data is not found in cache, query the database
with local_session() as session:
author = session.execute(select(Author).where(Author.user == user_id)).scalar_one_or_none()
if author:
# Кэшируем полученные данные автора
# Cache the retrieved author data
author_dict = author.dict()
await asyncio.gather(
redis.execute("SET", f"author:user:{user_id.strip()}", str(author.id)),
@@ -301,27 +271,28 @@ async def get_cached_author_by_user_id(user_id: str):
)
return author_dict
# Возвращаем None, если автор не найден
# Return None if author is not found
return None
# Get cached topic authors
async def get_cached_topic_authors(topic_id: int):
"""
Получает список авторов для заданной темы, используя кэш или базу данных.
Retrieve a list of authors for a given topic, using cache or database.
Args:
topic_id (int): Идентификатор темы, для которой нужно получить авторов.
topic_id (int): The identifier of the topic for which to retrieve authors.
Returns:
List[dict]: Список словарей, содержащих данные авторов.
List[dict]: A list of dictionaries containing author data.
"""
# Пытаемся получить список ID авторов из кэша
# Attempt to get a list of author IDs from cache
rkey = f"topic:authors:{topic_id}"
cached_authors_ids = await redis.get(rkey)
if cached_authors_ids:
authors_ids = json.loads(cached_authors_ids)
else:
# Если кэш пуст, получаем данные из базы данных
# If cache is empty, get data from the database
with local_session() as session:
query = (
select(ShoutAuthor.author)
@@ -330,10 +301,10 @@ async def get_cached_topic_authors(topic_id: int):
.where(and_(ShoutTopic.topic == topic_id, Shout.published_at.is_not(None), Shout.deleted_at.is_(None)))
)
authors_ids = [author_id for (author_id,) in session.execute(query).all()]
# Кэшируем полученные ID авторов
# Cache the retrieved author IDs
await redis.execute("set", rkey, json.dumps(authors_ids))
# Получаем полные данные авторов по кэшированным ID
# Retrieve full author details from cached IDs
if authors_ids:
authors = await get_cached_authors_by_ids(authors_ids)
logger.debug(f"Topic#{topic_id} authors fetched and cached: {len(authors)} authors found.")