gitlab-org--gitlab-foss/danger/roulette/Dangerfile
Nick Thomas 77b2ecd2b1
Reviewer roulette via Danger
Make danger pick reviewers and maintainers at random, for feontend,
backend, database, etc, changes, whenever files belonging to those
teams get changed.
2019-02-13 16:41:28 +00:00

78 lines
2.4 KiB
Ruby

# frozen_string_literal: true
MESSAGE = <<MARKDOWN
## Reviewer roulette
Changes that require review have been detected! A merge request is normally
reviewed by both a reviewer and a maintainer in its primary category (e.g.
~frontend or ~backend), and by a maintainer in all other categories.
MARKDOWN
CATEGORY_TABLE_HEADER = <<MARKDOWN
To spread load more evenly across eligible reviewers, Danger has randomly picked
a candidate for each review slot. Feel free to override this selection if you
think someone else would be better-suited, or the chosen person is unavailable.
Once you've decided who will review this merge request, mention them as you
normally would! Danger does not (yet?) automatically notify them for you.
| Category | Reviewer | Maintainer |
| -------- | -------- | ---------- |
MARKDOWN
UNKNOWN_FILES_MESSAGE = <<MARKDOWN
These files couldn't be categorised, so Danger was unable to suggest a reviewer.
Please consider creating a merge request to
[add support](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/lib/gitlab/danger/helper.rb)
for them.
MARKDOWN
def spin(team, project, category)
reviewers = team.select { |member| member.reviewer?(project, category) }
maintainers = team.select { |member| member.maintainer?(project, category) }
# TODO: filter out people who are currently not in the office
# TODO: take CODEOWNERS into account?
reviewer = reviewers[rand(reviewers.size)]
maintainer = maintainers[rand(maintainers.size)]
"| #{helper.label_for_category(category)} | #{reviewer&.markdown_name} | #{maintainer&.markdown_name} |"
end
def build_list(items)
list = items.map { |filename| "* `#{filename}`" }.join("\n")
if items.size > 10
"\n<details>\n\n#{list}\n\n</details>"
else
list
end
end
changes = helper.changes_by_category
categories = changes.keys - [:unknown]
unless changes.empty?
team =
begin
helper.project_team
rescue => err
warn("Reviewer roulette failed to load team data: #{err.message}")
[]
end
# Exclude the MR author from the team for selection purposes
team.delete_if { |teammate| teammate.username == gitlab.mr_author }
project = helper.project_name
unknown = changes.fetch(:unknown, [])
rows = categories.map { |category| spin(team, project, category) }
markdown(MESSAGE)
markdown(CATEGORY_TABLE_HEADER + rows.join("\n")) unless rows.empty?
markdown(UNKNOWN_FILES_MESSAGE + build_list(unknown)) unless unknown.empty?
end