File size: 1,320 Bytes
5dccc28 | 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 35 36 37 38 39 40 41 42 | from collections.abc import Generator
from sqlalchemy import create_engine, text
from sqlalchemy.engine import make_url
from sqlalchemy.exc import OperationalError
from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
from app.config import get_settings
settings = get_settings()
engine = create_engine(settings.database_url, pool_pre_ping=True)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, expire_on_commit=False)
class Base(DeclarativeBase):
pass
def init_db() -> None:
try:
with engine.begin() as connection:
connection.execute(text("CREATE EXTENSION IF NOT EXISTS vector"))
connection.execute(text("ALTER TABLE IF EXISTS document_chunks ADD COLUMN IF NOT EXISTS page_number INTEGER"))
Base.metadata.create_all(bind=engine)
except OperationalError as exc:
host = make_url(settings.database_url).host or "<unknown>"
raise RuntimeError(
"Database connection failed for host "
f"'{host}'. If you are using Supabase, use the Transaction Pooler URL "
"(port 6543) from the Supabase dashboard with sslmode=require."
) from exc
def get_db() -> Generator[Session, None, None]:
db = SessionLocal()
try:
yield db
finally:
db.close()
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