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# 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
# Ignore any files that are known but uncategoried. Prompt for any unknown files
changes.delete(:none)
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
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