John Spray 835287ba3a neon_local: add a flock to protect against concurrent execution (#10185) ...

## Problem

`neon_local` has always been unsafe to run concurrently with itself: it
uses simple text files for persistent state, and concurrent runs will
step on each other.

In some test environments we intentionally handle this with mutexes in
python land, but it's fragile to try and always remember to do that.

## Summary of changes

- Add a `flock` based mutex around the `main` function of neon_local,
using the repo directory as the file to lock
- Clean up an Option<> around control_plane_api, this is a drive-by
change because it was one of the fields that had a weird effect when
previous concurrent stuff stamped on it.

2024-12-18 16:29:47 +00:00

..

neon_local.rs

neon_local: add a flock to protect against concurrent execution (#10185)

2024-12-18 16:29:47 +00:00