Vladless
315 lines
12 KiB
Python
315 lines
12 KiB
Python
import hashlib
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from collections import defaultdict
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from datetime import datetime
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from sqlalchemy import delete, func, insert, select, update
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from sqlalchemy.exc import SQLAlchemyError
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from sqlalchemy.ext.asyncio import AsyncSession
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from core.cache_config import TARIFF_BY_ID_CACHE_TTL_SEC, TARIFFS_FOR_CLUSTER_CACHE_TTL_SEC
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from core.redis_cache import cache_delete, cache_delete_pattern, cache_get, cache_key, cache_set
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from database.models import Server, Tariff
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from logger import logger
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def _row_to_cache_dict(row_dict: dict) -> dict:
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"""Делает dict строки БД пригодным для JSON/Redis (datetime → str, убирает _sa_instance_state)."""
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out = {}
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for k, v in row_dict.items():
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if k.startswith("_"):
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continue
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if isinstance(v, datetime):
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out[k] = v.isoformat()
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else:
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out[k] = v
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return out
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async def _invalidate_tariff_cache(tariff_id: int | None = None) -> None:
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"""Сброс кэша тарифов при изменении (по id и списков по кластерам)."""
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if tariff_id is not None:
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await cache_delete(cache_key("tariff", tariff_id))
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await cache_delete_pattern("tariffs_cluster:*")
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def create_subgroup_hash(subgroup_title: str, group_code: str) -> str:
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if not subgroup_title:
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return ""
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unique_key = f"{subgroup_title}:{group_code}"
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hash_object = hashlib.md5(unique_key.encode("utf-8"))
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return hash_object.hexdigest()[:8]
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async def find_subgroup_by_hash(session: AsyncSession, subgroup_hash: str, group_code: str) -> str | None:
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result = await session.execute(
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select(Tariff.subgroup_title)
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.where(Tariff.group_code == group_code, Tariff.subgroup_title.isnot(None))
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.distinct()
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)
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subgroups = [row[0] for row in result.fetchall()]
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for subgroup_title in subgroups:
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if create_subgroup_hash(subgroup_title, group_code) == subgroup_hash:
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return subgroup_title
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return None
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async def get_tariffs(
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session: AsyncSession, tariff_id: int = None, group_code: str = None, with_subgroup_weights: bool = False
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):
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try:
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if tariff_id:
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result = await session.execute(select(Tariff).where(Tariff.id == tariff_id))
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elif group_code:
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result = await session.execute(
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select(Tariff).where(Tariff.group_code == group_code).order_by(Tariff.sort_order, Tariff.id)
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)
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else:
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result = await session.execute(select(Tariff).order_by(Tariff.sort_order, Tariff.id))
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tariffs = [dict(r.__dict__) for r in result.scalars().all()]
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if with_subgroup_weights and group_code:
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tariffs_without_order = [t for t in tariffs if t.get("sort_order") is None]
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if tariffs_without_order:
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for tariff in tariffs_without_order:
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tariff["sort_order"] = 1
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await session.execute(update(Tariff).where(Tariff.id == tariff["id"]).values(sort_order=1))
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await session.commit()
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grouped = defaultdict(list)
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for t in tariffs:
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grouped[t.get("subgroup_title")].append(t)
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subgroup_weights = {}
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for subgroup, tariffs_list in grouped.items():
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if subgroup:
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total_weight = sum(t.get("sort_order", 1) for t in tariffs_list)
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subgroup_weights[subgroup] = total_weight
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return {"tariffs": tariffs, "subgroup_weights": subgroup_weights}
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return tariffs
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при получении тарифов: {e}")
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await session.rollback()
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return []
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async def get_tariff_by_id(session: AsyncSession, tariff_id: int):
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key = cache_key("tariff", tariff_id)
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cached = await cache_get(key)
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if isinstance(cached, dict):
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return cached
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try:
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result = await session.execute(select(Tariff).where(Tariff.id == tariff_id))
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tariff = result.scalar_one_or_none()
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if not tariff:
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return None
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row = _row_to_cache_dict(dict(tariff.__dict__))
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await cache_set(key, row, TARIFF_BY_ID_CACHE_TTL_SEC)
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return row
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при получении тарифа по ID {tariff_id}: {e}")
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await session.rollback()
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return None
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async def get_tariffs_for_cluster(session: AsyncSession, cluster_name: str):
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key = cache_key("tariffs_cluster", cluster_name)
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cached = await cache_get(key)
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if isinstance(cached, list):
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return cached
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try:
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server_row = await session.execute(
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select(Server.tariff_group).where(Server.cluster_name == cluster_name).limit(1)
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)
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row = server_row.first()
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if not row:
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server_row = await session.execute(
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select(Server.tariff_group).where(Server.server_name == cluster_name).limit(1)
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)
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row = server_row.first()
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if not row or not row[0]:
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return []
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group_code = row[0]
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result = await session.execute(
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select(Tariff)
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.where(Tariff.group_code == group_code, Tariff.is_active.is_(True))
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.order_by(Tariff.sort_order, Tariff.id)
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)
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rows = [_row_to_cache_dict(dict(r.__dict__)) for r in result.scalars().all()]
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await cache_set(key, rows, TARIFFS_FOR_CLUSTER_CACHE_TTL_SEC)
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return rows
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при получении тарифов для кластера {cluster_name}: {e}")
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return []
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async def create_tariff(session: AsyncSession, data: dict):
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try:
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data["created_at"] = datetime.utcnow()
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data["updated_at"] = datetime.utcnow()
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if "sort_order" not in data:
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group_code = data.get("group_code")
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if group_code:
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result = await session.execute(
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select(func.max(Tariff.sort_order)).where(
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Tariff.group_code == group_code, Tariff.sort_order.isnot(None)
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)
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)
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max_order = result.scalar() or 0
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else:
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result = await session.execute(select(func.max(Tariff.sort_order)).where(Tariff.sort_order.isnot(None)))
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max_order = result.scalar() or 0
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data["sort_order"] = max_order + 1
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stmt = insert(Tariff).values(**data).returning(Tariff)
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result = await session.execute(stmt)
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await session.commit()
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await _invalidate_tariff_cache()
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return result.scalar_one()
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при создании тарифа: {e}")
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await session.rollback()
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return None
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async def update_tariff(session: AsyncSession, tariff_id: int, updates: dict):
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if not updates:
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return False
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try:
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updates["updated_at"] = datetime.utcnow()
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await session.execute(update(Tariff).where(Tariff.id == tariff_id).values(**updates))
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await session.commit()
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await _invalidate_tariff_cache(tariff_id)
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return True
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при обновлении тарифа ID={tariff_id}: {e}")
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await session.rollback()
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return False
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async def delete_tariff(session: AsyncSession, tariff_id: int):
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try:
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await session.execute(delete(Tariff).where(Tariff.id == tariff_id))
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await session.commit()
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await _invalidate_tariff_cache(tariff_id)
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return True
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при удалении тарифа ID={tariff_id}: {e}")
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await session.rollback()
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return False
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async def check_tariff_exists(session: AsyncSession, tariff_id: int):
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try:
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result = await session.execute(select(Tariff).where(Tariff.id == tariff_id, Tariff.is_active.is_(True)))
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tariff = result.scalar_one_or_none()
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if tariff:
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return True
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logger.warning(f"[TARIFF] Тариф {tariff_id} не найден в БД")
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return False
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при проверке тарифа {tariff_id}: {e}")
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await session.rollback()
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return False
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async def get_tariff_sort_order(session: AsyncSession, tariff_id: int) -> int:
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try:
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result = await session.execute(select(Tariff.sort_order).where(Tariff.id == tariff_id))
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sort_order = result.scalar_one_or_none()
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if sort_order is None:
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await session.execute(update(Tariff).where(Tariff.id == tariff_id).values(sort_order=1))
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await session.commit()
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await _invalidate_tariff_cache(tariff_id)
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return 1
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return sort_order
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при получении sort_order для тарифа {tariff_id}: {e}")
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await session.rollback()
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return None
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async def move_tariff_up(session: AsyncSession, tariff_id: int) -> bool:
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try:
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current_order = await get_tariff_sort_order(session, tariff_id)
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new_order = max(1, current_order - 1)
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await session.execute(update(Tariff).where(Tariff.id == tariff_id).values(sort_order=new_order))
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await session.commit()
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await _invalidate_tariff_cache(tariff_id)
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return True
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при перемещении тарифа {tariff_id} вверх: {e}")
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await session.rollback()
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return False
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async def move_tariff_down(session: AsyncSession, tariff_id: int) -> bool:
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try:
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current_order = await get_tariff_sort_order(session, tariff_id)
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new_order = current_order + 1
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await session.execute(update(Tariff).where(Tariff.id == tariff_id).values(sort_order=new_order))
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await session.commit()
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await _invalidate_tariff_cache(tariff_id)
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return True
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при перемещении тарифа {tariff_id} вниз: {e}")
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await session.rollback()
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return False
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async def initialize_tariff_sort_orders(session: AsyncSession, group_code: str) -> bool:
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try:
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result = await session.execute(select(Tariff).where(Tariff.group_code == group_code).order_by(Tariff.id))
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tariffs = result.scalars().all()
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if not tariffs:
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return True
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for i, tariff in enumerate(tariffs):
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new_sort_order = 1 + i
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await session.execute(update(Tariff).where(Tariff.id == tariff.id).values(sort_order=new_sort_order))
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await session.commit()
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await _invalidate_tariff_cache()
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return True
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при инициализации sort_order для группы {group_code}: {e}")
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await session.rollback()
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return False
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async def initialize_all_tariff_weights(session: AsyncSession) -> bool:
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try:
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result = await session.execute(select(Tariff).where(Tariff.sort_order.is_(None)))
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tariffs_without_weight = result.scalars().all()
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if not tariffs_without_weight:
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return True
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for tariff in tariffs_without_weight:
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await session.execute(update(Tariff).where(Tariff.id == tariff.id).values(sort_order=1))
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await session.commit()
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await _invalidate_tariff_cache()
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return True
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except SQLAlchemyError as e:
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logger.error(f"[TARIFF] Ошибка при инициализации весов тарифов: {e}")
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await session.rollback()
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return False
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