On Dec 5, 2013, at 1:25 PM, Jonathan Vanasco <jonat...@findmeon.com> wrote:
> > i'm looking at moving some raw sql in twisted to SqlAlchemy and have a > question. > > I have a multi-threaded twisted daemon that tends to generate a lot of race > conditions on a few tables that are frequently hit. > > I get integrity errors from something like this : > > domain = """SELECT * FROM domains WHERE ...."" > if not domain : > domain = """INSERT INTO domain VALUES .... > > the fix was : > > domain = """SELECT * FROM domains WHERE ....""" > if not domain : > try: > savepoint = db.savepoint() > """INSERT INTO domain VALUES ....""" > except psycopg2.IntegrityError : > savepoint,release() > domain = """SELECT * FROM domains WHERE ...."" > > is there a way to catch an integrity error like this with SqlAlchemy ? > > i'm trying to get away from directly using psycopg2, it's getting too > annoying to maintain raw sql. sure, catch sqlalchemy.ext.IntegrityError instead.
signature.asc
Description: Message signed with OpenPGP using GPGMail
