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aitbc/apps/blockchain-node/src/aitbc_chain/database.py

38 lines
1.1 KiB
Python
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from __future__ import annotations
from contextlib import contextmanager
from sqlmodel import Session, SQLModel, create_engine
from sqlalchemy import event
from .config import settings
# Import all models to ensure they are registered with SQLModel.metadata
from .models import Block, Transaction, Account, Receipt, Escrow # noqa: F401
_engine = create_engine(f"sqlite:///{settings.db_path}", echo=False)
@event.listens_for(_engine, "connect")
def set_sqlite_pragma(dbapi_connection, connection_record):
cursor = dbapi_connection.cursor()
cursor.execute("PRAGMA journal_mode=WAL")
cursor.execute("PRAGMA synchronous=NORMAL")
cursor.execute("PRAGMA cache_size=-64000")
cursor.execute("PRAGMA temp_store=MEMORY")
cursor.execute("PRAGMA mmap_size=30000000000")
cursor.execute("PRAGMA busy_timeout=5000")
cursor.close()
def init_db() -> None:
settings.db_path.parent.mkdir(parents=True, exist_ok=True)
SQLModel.metadata.create_all(_engine)
@contextmanager
def session_scope() -> Session:
with Session(_engine) as session:
yield session
# Expose engine for escrow routes
engine = _engine