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2685f20 77aa3fc 2685f20 6ca330f 2685f20 6ca330f 2685f20 7890908 77aa3fc 7890908 77aa3fc 7890908 77aa3fc 2685f20 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | import os
from sqlalchemy import create_engine, event
from sqlalchemy.orm import sessionmaker, scoped_session
from .config import DATA_DIR
DB_PATH = os.path.join(DATA_DIR, "sougouwiki.db")
DATABASE_URL = f"sqlite:///{DB_PATH}"
# Now that we run on local ephemeral disk (NOT tmpfs and NOT FUSE),
# we can safely use WAL mode for high performance.
engine = create_engine(
DATABASE_URL,
echo=False,
connect_args={"check_same_thread": False, "timeout": 30}
)
@event.listens_for(engine, "connect")
def set_sqlite_pragma(dbapi_connection, connection_record):
cursor = dbapi_connection.cursor()
# WAL mode is perfect for "Crawler writing, API reading"
cursor.execute("PRAGMA journal_mode=WAL")
cursor.execute("PRAGMA synchronous=NORMAL")
cursor.execute("PRAGMA busy_timeout=30000")
cursor.close()
SessionLocal = scoped_session(sessionmaker(bind=engine))
def init_db():
from .models import Base
Base.metadata.create_all(engine)
def get_session():
return SessionLocal()
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