365 lines
14 KiB
Python
365 lines
14 KiB
Python
import json
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import time
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from sqlalchemy import and_, desc, or_, select, text
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from sqlalchemy.orm import aliased
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from orm.author import Author, AuthorFollower
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from orm.shout import ShoutAuthor, ShoutTopic
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from orm.topic import Topic
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from resolvers.stat import author_follows_authors, author_follows_topics, get_with_stat
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from services.auth import login_required
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from services.cache import cache_author
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from services.db import local_session
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from services.encoders import CustomJSONEncoder
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from services.logger import root_logger as logger
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from services.rediscache import redis
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from services.schema import mutation, query
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@mutation.field("update_author")
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@login_required
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async def update_author(_, info, profile):
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user_id = info.context.get("user_id")
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if not user_id:
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return {"error": "unauthorized", "author": None}
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try:
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with local_session() as session:
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author = session.query(Author).where(Author.user == user_id).first()
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if author:
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Author.update(author, profile)
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session.add(author)
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session.commit()
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author_query = select(Author).where(Author.user == user_id)
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[author] = get_with_stat(author_query)
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if author:
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await cache_author(author.dict())
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return {"error": None, "author": author}
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except Exception as exc:
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import traceback
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logger.error(traceback.format_exc())
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return {"error": exc, "author": None}
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@query.field("get_authors_all")
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def get_authors_all(_, _info):
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with local_session() as session:
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authors = session.query(Author).all()
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return authors
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@query.field("get_author")
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async def get_author(_, _info, slug="", author_id=0):
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author_query = ""
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author = None
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author_dict = None
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try:
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# lookup for cached author
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author_query = select(Author)
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if slug:
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author_query = author_query.filter(Author.slug == slug)
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elif author_id:
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author_query = author_query.filter(Author.id == author_id)
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else:
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raise ValueError("Author not found")
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with local_session() as session:
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lookup_result = session.execute(author_query).first()
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if lookup_result:
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[found_author] = lookup_result
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# logger.debug(found_author)
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if found_author:
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logger.debug(f"found author id: {found_author.id}")
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author_id = found_author.id if found_author.id else author_id
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if author_id:
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cached_result = await redis.execute(
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"GET", f"author:{author_id}"
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)
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if isinstance(cached_result, str):
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author_dict = json.loads(cached_result)
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# update stat from db
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if not author_dict or not author_dict.get("stat"):
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result = get_with_stat(author_query)
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if not result:
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raise ValueError("Author not found")
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[author] = result
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# use found author
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if isinstance(author, Author):
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logger.debug(f"update @{author.slug} with id {author.id}")
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author_dict = author.dict()
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await cache_author(author_dict)
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except ValueError:
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pass
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except Exception as exc:
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import traceback
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logger.error(f"{exc}:\n{traceback.format_exc()}")
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return author_dict
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async def get_author_by_user_id(user_id: str):
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logger.info(f"getting author id for {user_id}")
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redis_key = f"user:{user_id}"
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author = None
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try:
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res = await redis.execute("GET", redis_key)
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if isinstance(res, str):
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author = json.loads(res)
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author_id = author.get("id")
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author_slug = author.get("slug")
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if author_id:
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logger.debug(f"got author @{author_slug} #{author_id} cached")
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return author
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author_query = select(Author).filter(Author.user == user_id)
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result = get_with_stat(author_query)
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if result:
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[author] = result
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await cache_author(author.dict())
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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(exc)
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return author
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@query.field("get_author_id")
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async def get_author_id(_, _info, user: str):
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return await get_author_by_user_id(user)
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@query.field("load_authors_by")
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async def load_authors_by(_, _info, by, limit, offset):
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logger.debug(f"loading authors by {by}")
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authors_query = select(Author)
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if by.get("slug"):
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authors_query = authors_query.filter(Author.slug.ilike(f"%{by['slug']}%"))
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elif by.get("name"):
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authors_query = authors_query.filter(Author.name.ilike(f"%{by['name']}%"))
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elif by.get("topic"):
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authors_query = (
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authors_query.join(ShoutAuthor)
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.join(ShoutTopic)
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.join(Topic)
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.where(Topic.slug == str(by["topic"]))
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)
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if by.get("last_seen"): # in unix time
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before = int(time.time()) - by["last_seen"]
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authors_query = authors_query.filter(Author.last_seen > before)
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elif by.get("created_at"): # in unix time
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before = int(time.time()) - by["created_at"]
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authors_query = authors_query.filter(Author.created_at > before)
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authors_query = authors_query.limit(limit).offset(offset)
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with local_session() as session:
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authors_nostat = session.execute(authors_query)
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authors = []
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if authors_nostat:
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for [a] in authors_nostat:
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author_dict = None
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if isinstance(a, Author):
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author_id = a.id
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if bool(author_id):
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cached_result = await redis.execute(
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"GET", f"author:{author_id}"
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)
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if isinstance(cached_result, str):
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author_dict = json.loads(cached_result)
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if not author_dict or not isinstance(
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author_dict.get("shouts"), int
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):
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break
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# order
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order = by.get("order")
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if order in ["shouts", "followers"]:
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authors_query = authors_query.order_by(desc(text(f"{order}_stat")))
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# group by
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authors = get_with_stat(authors_query)
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return authors or []
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@query.field("get_author_follows")
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async def get_author_follows(_, _info, slug="", user=None, author_id=0):
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try:
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author_query = select(Author)
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if user:
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author_query = author_query.filter(Author.user == user)
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elif slug:
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author_query = author_query.filter(Author.slug == slug)
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elif author_id:
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author_query = author_query.filter(Author.id == author_id)
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else:
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return {"error": "One of slug, user, or author_id must be provided"}
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with local_session() as session:
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result = session.execute(author_query)
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if result:
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# logger.debug(result)
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[author] = result
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# logger.debug(author)
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if author and isinstance(author, Author):
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# logger.debug(author.dict())
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author_id = author.id if not author_id else author_id
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topics = []
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authors = []
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if bool(author_id):
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rkey = f"author:{author_id}:follows-authors"
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logger.debug(f"getting {author_id} follows authors")
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cached = await redis.execute("GET", rkey)
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if not cached:
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authors = author_follows_authors(author_id) # type: ignore
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prepared = [author.dict() for author in authors]
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await redis.execute(
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"SET", rkey, json.dumps(prepared, cls=CustomJSONEncoder)
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)
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elif isinstance(cached, str):
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authors = json.loads(cached)
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rkey = f"author:{author_id}:follows-topics"
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cached = await redis.execute("GET", rkey)
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if cached and isinstance(cached, str):
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topics = json.loads(cached)
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if not cached:
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topics = author_follows_topics(author_id) # type: ignore
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prepared = [topic.dict() for topic in topics]
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await redis.execute(
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"SET", rkey, json.dumps(prepared, cls=CustomJSONEncoder)
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)
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return {
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"topics": topics,
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"authors": authors,
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"communities": [
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{"id": 1, "name": "Дискурс", "slug": "discours", "pic": ""}
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],
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}
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except Exception:
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import traceback
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traceback.print_exc()
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return {"error": "Author not found"}
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@query.field("get_author_follows_topics")
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async def get_author_follows_topics(_, _info, slug="", user=None, author_id=None):
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with local_session() as session:
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if user or slug:
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author_id_result = (
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session.query(Author.id)
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.filter(or_(Author.user == user, Author.slug == slug))
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.first()
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)
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author_id = author_id_result[0] if author_id_result else None
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if not author_id:
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raise ValueError("Author not found")
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logger.debug(f"getting {author_id} follows topics")
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rkey = f"author:{author_id}:follows-topics"
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cached = await redis.execute("GET", rkey)
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topics = []
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if isinstance(cached, str):
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topics = json.loads(cached)
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if not cached:
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topics = author_follows_topics(author_id)
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prepared = [topic.dict() for topic in topics]
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await redis.execute(
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"SET", rkey, json.dumps(prepared, cls=CustomJSONEncoder)
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)
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return topics
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@query.field("get_author_follows_authors")
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async def get_author_follows_authors(_, _info, slug="", user=None, author_id=None):
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with local_session() as session:
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if user or slug:
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author_id_result = (
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session.query(Author.id)
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.filter(or_(Author.user == user, Author.slug == slug))
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.first()
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)
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author_id = author_id_result[0] if author_id_result else None
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if author_id:
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logger.debug(f"getting {author_id} follows authors")
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rkey = f"author:{author_id}:follows-authors"
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cached = await redis.execute("GET", rkey)
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authors = []
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if isinstance(cached, str):
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authors = json.loads(cached)
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if not authors:
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authors = author_follows_authors(author_id)
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prepared = [author.dict() for author in authors]
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await redis.execute(
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"SET", rkey, json.dumps(prepared, cls=CustomJSONEncoder)
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)
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return authors
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else:
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raise ValueError("Author not found")
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def create_author(user_id: str, slug: str, name: str = ""):
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with local_session() as session:
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try:
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author = None
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if user_id:
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author = session.query(Author).filter(Author.user == user_id).first()
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elif slug:
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author = session.query(Author).filter(Author.slug == slug).first()
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if not author:
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new_author = Author(user=user_id, slug=slug, name=name)
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session.add(new_author)
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session.commit()
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logger.info(f"author created by webhook {new_author.dict()}")
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except Exception as exc:
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logger.debug(exc)
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@query.field("get_author_followers")
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async def get_author_followers(_, _info, slug: str):
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logger.debug(f"getting followers for @{slug}")
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try:
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author_alias = aliased(Author)
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author_query = select(author_alias).filter_by(slug=slug)
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with local_session() as session:
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result = session.execute(author_query).first()
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if not result:
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return []
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author = result[0]
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author_id = author.id
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cached = await redis.execute("GET", f"author:{author_id}:followers")
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if cached:
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followers_cached = json.loads(cached)
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if isinstance(followers_cached, list):
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logger.debug(
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f"@{slug} got {len(followers_cached)} followers cached"
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)
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followers = [fc for fc in followers_cached if fc["id"] != author_id]
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return followers
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author_follower_alias = aliased(AuthorFollower, name="af")
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followers_query = select(Author).join(
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author_follower_alias,
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and_(
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author_follower_alias.author == author_id,
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author_follower_alias.follower == Author.id,
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Author.id != author_id,
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),
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)
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followers_result = await session.execute(followers_query)
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followers = followers_result.scalars().all()
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if isinstance(followers, list):
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followers_data = [follower.dict() for follower in followers]
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await redis.execute(
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"SET", f"author:{author_id}:followers", json.dumps(followers_data)
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)
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logger.debug(f"@{slug} cache updated with {len(followers)} followers")
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return followers
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except Exception as exc:
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import traceback
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logger.error(exc)
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logger.error(traceback.format_exc())
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return []
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