Mattermost GitLab integration


I activated the GitLab mattermost integration so all activity from the fedeproxy project goes to the fedeproxy chat room. And then looked into the implementation:

Which appears to be tightly integrated in the GitLab codebase. I was half expecting it to use some kind of plugin system but it’s all ad-hoc.

While exploring this I noticed there is a difference between integrations which includes mattermost and can be tuned on a per-project basis. It is a subset of the GItLab integrations which also includes, for instance Jenkins which is not configurable on a per project basis.