Egor
273 lines
10 KiB
Python
273 lines
10 KiB
Python
import logging
|
|
from typing import AsyncGenerator, Optional
|
|
from contextlib import asynccontextmanager
|
|
from sqlalchemy.ext.asyncio import (
|
|
AsyncSession,
|
|
create_async_engine,
|
|
async_sessionmaker,
|
|
AsyncEngine
|
|
)
|
|
from sqlalchemy.pool import NullPool, AsyncAdaptedQueuePool
|
|
from sqlalchemy import event, text
|
|
from sqlalchemy.engine import Engine
|
|
import time
|
|
from app.config import settings
|
|
from app.database.models import Base
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
# ============================================================================
|
|
# PRODUCTION-GRADE CONNECTION POOLING
|
|
# ============================================================================
|
|
|
|
if settings.get_database_url().startswith("sqlite"):
|
|
poolclass = NullPool
|
|
pool_kwargs = {}
|
|
else:
|
|
poolclass = AsyncAdaptedQueuePool
|
|
pool_kwargs = {
|
|
"pool_size": 20,
|
|
"max_overflow": 30,
|
|
"pool_timeout": 30,
|
|
"pool_recycle": 3600,
|
|
"pool_pre_ping": True,
|
|
"pool_reset_on_return": "rollback",
|
|
}
|
|
|
|
# ============================================================================
|
|
# ENGINE WITH ADVANCED OPTIMIZATIONS
|
|
# ============================================================================
|
|
|
|
engine = create_async_engine(
|
|
settings.get_database_url(),
|
|
poolclass=poolclass,
|
|
echo=settings.DEBUG,
|
|
future=True,
|
|
**pool_kwargs,
|
|
|
|
connect_args={
|
|
"server_settings": {
|
|
"application_name": "remnawave_bot",
|
|
"jit": "on",
|
|
"statement_timeout": "60000", # 60 секунд
|
|
"idle_in_transaction_session_timeout": "300000", # 5 минут
|
|
},
|
|
"command_timeout": 60,
|
|
"timeout": 10,
|
|
} if not settings.get_database_url().startswith("sqlite") else {},
|
|
|
|
execution_options={
|
|
"isolation_level": "READ COMMITTED",
|
|
"compiled_cache_size": 500,
|
|
}
|
|
)
|
|
|
|
# ============================================================================
|
|
# SESSION FACTORY WITH OPTIMIZATIONS
|
|
# ============================================================================
|
|
|
|
AsyncSessionLocal = async_sessionmaker(
|
|
bind=engine,
|
|
class_=AsyncSession,
|
|
expire_on_commit=False,
|
|
autoflush=False,
|
|
autocommit=False,
|
|
)
|
|
|
|
# ============================================================================
|
|
# QUERY PERFORMANCE MONITORING
|
|
# ============================================================================
|
|
|
|
if settings.DEBUG:
|
|
@event.listens_for(Engine, "before_cursor_execute")
|
|
def before_cursor_execute(conn, cursor, statement, parameters, context, executemany):
|
|
conn.info.setdefault("query_start_time", []).append(time.time())
|
|
logger.debug(f"🔍 Executing query: {statement[:100]}...")
|
|
|
|
@event.listens_for(Engine, "after_cursor_execute")
|
|
def after_cursor_execute(conn, cursor, statement, parameters, context, executemany):
|
|
total = time.time() - conn.info["query_start_time"].pop(-1)
|
|
if total > 0.1:
|
|
logger.warning(f"🐌 Slow query ({total:.3f}s): {statement[:100]}...")
|
|
else:
|
|
logger.debug(f"⚡ Query executed in {total:.3f}s")
|
|
|
|
# ============================================================================
|
|
# ADVANCED SESSION MANAGER WITH READ REPLICAS
|
|
# ============================================================================
|
|
|
|
class DatabaseManager:
|
|
|
|
def __init__(self):
|
|
self.engine = engine
|
|
self.read_replica_engine: Optional[AsyncEngine] = None
|
|
|
|
if hasattr(settings, 'DATABASE_READ_REPLICA_URL') and settings.DATABASE_READ_REPLICA_URL:
|
|
self.read_replica_engine = create_async_engine(
|
|
settings.DATABASE_READ_REPLICA_URL,
|
|
poolclass=poolclass,
|
|
pool_size=30,
|
|
max_overflow=50,
|
|
pool_pre_ping=True,
|
|
echo=False,
|
|
)
|
|
|
|
@asynccontextmanager
|
|
async def session(self, read_only: bool = False):
|
|
target_engine = self.read_replica_engine if (read_only and self.read_replica_engine) else self.engine
|
|
|
|
async_session = async_sessionmaker(
|
|
bind=target_engine,
|
|
class_=AsyncSession,
|
|
expire_on_commit=False,
|
|
autoflush=False,
|
|
)
|
|
|
|
async with async_session() as session:
|
|
try:
|
|
yield session
|
|
if not read_only:
|
|
await session.commit()
|
|
except Exception:
|
|
await session.rollback()
|
|
raise
|
|
|
|
async def health_check(self) -> dict:
|
|
"""Проверка здоровья БД и метрики пула"""
|
|
pool = self.engine.pool
|
|
|
|
try:
|
|
async with AsyncSessionLocal() as session:
|
|
start = time.time()
|
|
await session.execute(text("SELECT 1"))
|
|
latency = (time.time() - start) * 1000
|
|
status = "healthy"
|
|
except Exception as e:
|
|
logger.error(f"❌ Database health check failed: {e}")
|
|
status = "unhealthy"
|
|
latency = None
|
|
|
|
return {
|
|
"status": status,
|
|
"latency_ms": round(latency, 2) if latency else None,
|
|
"pool": {
|
|
"size": pool.size(),
|
|
"checked_in": pool.checkedin(),
|
|
"checked_out": pool.checkedout(),
|
|
"overflow": pool.overflow(),
|
|
"total_connections": pool.size() + pool.overflow(),
|
|
"utilization": f"{(pool.checkedout() / (pool.size() + pool.overflow()) * 100):.1f}%"
|
|
}
|
|
}
|
|
|
|
db_manager = DatabaseManager()
|
|
|
|
# ============================================================================
|
|
# SESSION DEPENDENCY FOR FASTAPI/AIOGRAM
|
|
# ============================================================================
|
|
|
|
async def get_db() -> AsyncGenerator[AsyncSession, None]:
|
|
"""Стандартная dependency для FastAPI"""
|
|
async with AsyncSessionLocal() as session:
|
|
try:
|
|
yield session
|
|
await session.commit()
|
|
except Exception:
|
|
await session.rollback()
|
|
raise
|
|
|
|
async def get_db_read_only() -> AsyncGenerator[AsyncSession, None]:
|
|
"""Read-only dependency для тяжелых SELECT запросов"""
|
|
async with db_manager.session(read_only=True) as session:
|
|
yield session
|
|
|
|
# ============================================================================
|
|
# BATCH OPERATIONS FOR PERFORMANCE
|
|
# ============================================================================
|
|
|
|
class BatchOperations:
|
|
"""Утилиты для массовых операций"""
|
|
|
|
@staticmethod
|
|
async def bulk_insert(session: AsyncSession, model, data: list[dict], chunk_size: int = 1000):
|
|
"""Массовая вставка с чанками"""
|
|
for i in range(0, len(data), chunk_size):
|
|
chunk = data[i:i + chunk_size]
|
|
session.add_all([model(**item) for item in chunk])
|
|
await session.flush()
|
|
await session.commit()
|
|
|
|
@staticmethod
|
|
async def bulk_update(session: AsyncSession, model, data: list[dict], chunk_size: int = 1000):
|
|
"""Массовое обновление с чанками"""
|
|
for i in range(0, len(data), chunk_size):
|
|
chunk = data[i:i + chunk_size]
|
|
await session.execute(
|
|
model.__table__.update(),
|
|
chunk
|
|
)
|
|
await session.commit()
|
|
|
|
batch_ops = BatchOperations()
|
|
|
|
# ============================================================================
|
|
# INITIALIZATION AND CLEANUP
|
|
# ============================================================================
|
|
|
|
async def init_db():
|
|
"""Инициализация БД с оптимизациями"""
|
|
logger.info("🚀 Создание таблиц базы данных...")
|
|
|
|
async with engine.begin() as conn:
|
|
await conn.run_sync(Base.metadata.create_all)
|
|
|
|
if not settings.get_database_url().startswith("sqlite"):
|
|
await conn.execute(text("""
|
|
CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_users_telegram_id
|
|
ON users(telegram_id);
|
|
|
|
CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_subscriptions_user_id
|
|
ON subscriptions(user_id);
|
|
|
|
CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_subscriptions_status
|
|
ON subscriptions(status) WHERE status = 'active';
|
|
|
|
CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_payments_created_at
|
|
ON payments(created_at DESC);
|
|
"""))
|
|
|
|
logger.info("✅ База данных успешно инициализирована")
|
|
|
|
# Выводим статистику
|
|
health = await db_manager.health_check()
|
|
logger.info(f"📊 Database health: {health}")
|
|
|
|
async def close_db():
|
|
"""Корректное закрытие всех соединений"""
|
|
logger.info("🔄 Закрытие соединений с БД...")
|
|
|
|
await engine.dispose()
|
|
|
|
if db_manager.read_replica_engine:
|
|
await db_manager.read_replica_engine.dispose()
|
|
|
|
logger.info("✅ Все подключения к базе данных закрыты")
|
|
|
|
# ============================================================================
|
|
# CONNECTION POOL METRICS (для мониторинга)
|
|
# ============================================================================
|
|
|
|
async def get_pool_metrics() -> dict:
|
|
"""Детальные метрики пула для Prometheus/Grafana"""
|
|
pool = engine.pool
|
|
|
|
return {
|
|
"pool_size": pool.size(),
|
|
"checked_in_connections": pool.checkedin(),
|
|
"checked_out_connections": pool.checkedout(),
|
|
"overflow_connections": pool.overflow(),
|
|
"total_connections": pool.size() + pool.overflow(),
|
|
"max_possible_connections": pool.size() + (pool._max_overflow if hasattr(pool, '_max_overflow') else 0),
|
|
"pool_utilization_percent": round((pool.checkedout() / (pool.size() + pool.overflow()) * 100), 2) if (pool.size() + pool.overflow()) > 0 else 0,
|
|
}
|