Module dbutils

DeadlockWrap(function, *_args, **_kwargs) - automatically retries
function in case of a database deadlock.

This is a function intended to be used to wrap database calls such
that they perform retrys with exponentially backing off sleeps in
between when a DBLockDeadlockError exception is raised.

A 'max_retries' parameter may optionally be passed to prevent it
from retrying forever (in which case the exception will be reraised).

    d = DB(...)
    d.open(...)
    DeadlockWrap(d.put, "foo", data="bar")  # set key "foo" to "bar"