61 строка
2.5 KiB
Python
61 строка
2.5 KiB
Python
from collections.abc import Generator
|
|
from sqlalchemy import create_engine, inspect, text
|
|
from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
|
|
|
|
from app.core import get_settings
|
|
|
|
settings = get_settings()
|
|
engine = create_engine(settings.database_url, pool_pre_ping=True)
|
|
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
|
|
|
|
|
|
class Base(DeclarativeBase):
|
|
pass
|
|
|
|
|
|
def get_db() -> Generator[Session, None, None]:
|
|
db = SessionLocal()
|
|
try:
|
|
yield db
|
|
finally:
|
|
db.close()
|
|
|
|
|
|
def init_db() -> None:
|
|
from app import models # noqa: F401
|
|
|
|
Base.metadata.create_all(bind=engine)
|
|
apply_safe_schema_patches()
|
|
|
|
|
|
def apply_safe_schema_patches() -> None:
|
|
"""Tiny compatibility layer for the early MVP.
|
|
|
|
SQLAlchemy create_all creates missing tables but does not alter existing ones.
|
|
During rapid MVP iterations this keeps old server databases from breaking
|
|
when a new column is added.
|
|
"""
|
|
inspector = inspect(engine)
|
|
if 'bot_state' in inspector.get_table_names():
|
|
existing = {column['name'] for column in inspector.get_columns('bot_state')}
|
|
patches = []
|
|
if 'live_acknowledged' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN live_acknowledged BOOLEAN NOT NULL DEFAULT FALSE")
|
|
if 'emergency_stop' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN emergency_stop BOOLEAN NOT NULL DEFAULT FALSE")
|
|
if 'trade_mode' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN trade_mode VARCHAR(16) NOT NULL DEFAULT 'demo'")
|
|
if 'enabled' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN enabled BOOLEAN NOT NULL DEFAULT FALSE")
|
|
if 'trade_style_mode' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN trade_style_mode VARCHAR(32) NOT NULL DEFAULT 'balanced'")
|
|
if 'min_signal_score' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN min_signal_score FLOAT NOT NULL DEFAULT 65.0")
|
|
if 'max_open_positions' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN max_open_positions INTEGER NOT NULL DEFAULT 3")
|
|
if 'max_quote_per_trade' not in existing:
|
|
patches.append("ALTER TABLE bot_state ADD COLUMN max_quote_per_trade FLOAT NOT NULL DEFAULT 100.0")
|
|
with engine.begin() as conn:
|
|
for patch in patches:
|
|
conn.execute(text(patch))
|
© 2026 StackWorks