I know when I got something to review

Add / remove reviewers

After having created a PR, on the PR view, there is a list of reviewers that is empty.

I can click on "Edit" to add people:

• Usernames (done in story #14190)
• Groupes

Both with auto-completers (I cannot add raw email address)

When people/groups are added they get a notification about the PR to reviews.

It's possible to remove reviewers with the same process.

"Owner" of the PR is automatically part of the notification list. Who is "owner":

• creator of PR
• commit author => NO, we don't want to notify linux kernel contributors
• push author

Notifications

What triggers a notifications

• A new comment (there will be one email per comment) (done in story #14190)
• A new push in the branch (done in story #14190)
• A Jenkins update of the branch
• Being added as a reviewer (only new reviewers are notified, existing reviewers are not notified about add/remove) (done in story #14190)

There is a check of permissions as well as an email de-duplication at sending time to avoid leaking informations.

The code should also respect "Truncated Emails"

Notifications are handled with Backend Workers (Redis) whenever possible to avoid slowdown on push/comment & co.

Content of the notification to be defined

1. On reviewer added:
   1. commit summary (id, shortlog)
   2. stats (list of files + status)
   3. link to the PR (done in story #14190)
2. On comment: (done in story #14190)
   1. link to the PR
   2. comments + context (file, code fragment)
3. On push:
   1. link to the PR (done in story #14190)
   2. shortlog of modified files (/!\ force push)
4. Merge/abandon (done in story #14190)
   1. link to the PR
   2. status of PR
5. Jenkins
   1. link to the PR
   2. CI status (only for the last commit of the PR, only if the CI status change)
6. On title/description change? => NO

Bonus: The information of reviewers added/removed is displayed in the PR log