35 lines
966 B
Python
35 lines
966 B
Python
from __future__ import annotations
|
|
|
|
from sqlalchemy import create_engine, event
|
|
from sqlalchemy.engine import Engine
|
|
|
|
from app.core.config import settings
|
|
|
|
|
|
def _create_read_only_engine(connection_url: str) -> Engine:
|
|
engine = create_engine(
|
|
connection_url, pool_pre_ping=True, pool_recycle=3600, future=True
|
|
)
|
|
|
|
@event.listens_for(engine, "connect")
|
|
def _on_connect(dbapi_connection, _connection_record) -> None:
|
|
cursor = dbapi_connection.cursor()
|
|
try:
|
|
cursor.execute("SET TRANSACTION ISOLATION LEVEL READ COMMITTED;")
|
|
finally:
|
|
cursor.close()
|
|
|
|
return engine
|
|
|
|
|
|
def create_warehouse_engines() -> dict[str, Engine]:
|
|
return {
|
|
"wwi": _create_read_only_engine(settings.wwi_connection_url),
|
|
"aw": _create_read_only_engine(settings.aw_connection_url),
|
|
}
|
|
|
|
|
|
def dispose_engines(engines: dict[str, Engine]) -> None:
|
|
for engine in engines.values():
|
|
engine.dispose()
|