37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
"""Conexión a la base de datos. Postgres en producción (DATABASE_URL); SQLite
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como fallback para desarrollo/tests."""
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import os
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from sqlalchemy import create_engine
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from sqlalchemy.orm import declarative_base, sessionmaker
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from sqlalchemy.pool import StaticPool
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DATABASE_URL = os.getenv("DATABASE_URL", "sqlite:///./autoayuno.db")
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# psycopg2 usa 'postgresql://'; algunos proveedores dan 'postgres://'.
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if DATABASE_URL.startswith("postgres://"):
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DATABASE_URL = DATABASE_URL.replace("postgres://", "postgresql://", 1)
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if DATABASE_URL.startswith("sqlite"):
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connect_args = {"check_same_thread": False}
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# SQLite en memoria: una sola conexión compartida (StaticPool) para que las
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# tablas creadas al arrancar sean visibles por todas las sesiones.
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is_memory = ":memory:" in DATABASE_URL or DATABASE_URL == "sqlite://"
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engine = create_engine(
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DATABASE_URL,
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connect_args=connect_args,
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poolclass=StaticPool if is_memory else None,
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)
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else:
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engine = create_engine(DATABASE_URL, pool_pre_ping=True)
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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Base = declarative_base()
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def get_db():
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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