lt
44 lines
1.6 KiB
Python
44 lines
1.6 KiB
Python
from sqlalchemy import create_engine
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker
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import os
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from pathlib import Path
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# 计算项目根目录（backend/app/database.py -> yu-zhi-ran）
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PROJECT_ROOT = Path(__file__).resolve().parent.parent.parent.parent
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# 数据库配置：通过环境变量控制
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USE_POSTGRES = os.getenv('USE_POSTGRES', 'false').lower() == 'true'
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if USE_POSTGRES:
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# PostgreSQL 生产数据库
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POSTGRES_CONFIG = {
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'host': os.getenv('PG_HOST', '127.0.0.1'),
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'port': os.getenv('PG_PORT', '5432'),
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'database': os.getenv('PG_DATABASE', 'yzr_nr'),
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'user': os.getenv('PG_USER', 'yzr_nr'),
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'password': os.getenv('PG_PASSWORD', 'aTX3WKKnPfRnM5PC')
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}
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SQLALCHEMY_DATABASE_URL = f"postgresql://{POSTGRES_CONFIG['user']}:{POSTGRES_CONFIG['password']}@{POSTGRES_CONFIG['host']}:{POSTGRES_CONFIG['port']}/{POSTGRES_CONFIG['database']}"
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engine = create_engine(SQLALCHEMY_DATABASE_URL, pool_pre_ping=True)
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else:
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# SQLite 开发数据库
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DATA_DIR = os.getenv('DATA_DIR', str(PROJECT_ROOT / 'data'))
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os.makedirs(DATA_DIR, exist_ok=True)
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DB_PATH = os.path.join(DATA_DIR, 'yzr.db')
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SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_PATH}"
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engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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Base = declarative_base()
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def init_db():
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Base.metadata.create_all(bind=engine)
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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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