db: prevent duplicate jobs (!36980) · Merge requests · Administrator / sourcegraph

Administrator requested to merge as/prevent-duplicates into main Jun 10, 2022

Created by: asdine

When enqueueing a job we make sure to replace queued job with the new one if they are for the same couple project / external service id.

~~Note: We will probably need an index, I will add one in another PR.~~ Index added here https://github.com/sourcegraph/sourcegraph/pull/36986

Test plan

Improved a unit test