I found the data manager interface somewhat convoluted, so I wrote some
adapters that allow you to write datamanagers as generator functions
(similar to contextlib.contextmanager).
@datamanager
def transactionally_do_something():
try:
# BEGIN
yield
# VOTE
yield
except Exception:
# ABORT
raise
else:
# FINISH
There's also a @commitmanager version which skips the BEGIN phase if you
have nothing to put there, and there are inline flavors of both for
attaching a one-off datamanager to the current transaction.
https://gist.github.com/groner/ae63a62ded7d6dbdfb3397f264300b16
Kai
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