Qn / Feature Request - can I just make a moto Session without worrying about mock lifetimes?

[jwhitaker-gridcog]

The docs of moto recommend usage following a pattern of "start mocking", "use boto stuff", "stop mocking". e.g.

with mock_aws():
  sess = boto3.Session()
  sess.client('s3').do_stuff()... # uses moto

However, is it possible to use moto without interfering with global state like this? e.g. can I just ask for a moto session like:

moto_sess: boto3.Session = moto.get_session()
moto_sess.client('s3').do_stuff()... # uses moto
boto3.Session().client('s3').do_stuff()... # moto not involved

? This feels much neater to me - there's no global state being mutated, and if my code is already structured to accept a Session via DI or something then it's a natural fit.

I've tried using moto.core.base_backend.get_session but it doesn't seem to work outside of mock_aws() being active.

[bblommers]

Hi @jwhitaker-gridcog - Moto hooks into the list of global boto3 events, so once our mocking hook is set, every instantiated client uses those hooks. As far as I can see, there is no (easy) way to only mock specific boto3 sessions.

It's hard to tell without knowing your exact use case - but does it make sense to configure specific requests/services to passthrough instead? See the docs here: https://docs.getmoto.org/en/latest/docs/configuration/index.html