92 lines
3.4 KiB
Ruby
92 lines
3.4 KiB
Ruby
# frozen_string_literal: true
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require 'digest/md5'
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MESSAGE = <<MARKDOWN
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## Reviewer roulette
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Changes that require review have been detected! A merge request is normally
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reviewed by both a reviewer and a maintainer in its primary category (e.g.
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~frontend or ~backend), and by a maintainer in all other categories.
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MARKDOWN
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CATEGORY_TABLE_HEADER = <<MARKDOWN
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To spread load more evenly across eligible reviewers, Danger has randomly picked
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a candidate for each review slot. Feel free to override this selection if you
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think someone else would be better-suited, or the chosen person is unavailable.
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Once you've decided who will review this merge request, mention them as you
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normally would! Danger does not (yet?) automatically notify them for you.
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| Category | Reviewer | Maintainer |
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| -------- | -------- | ---------- |
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MARKDOWN
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UNKNOWN_FILES_MESSAGE = <<MARKDOWN
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These files couldn't be categorised, so Danger was unable to suggest a reviewer.
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Please consider creating a merge request to
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[add support](https://gitlab.com/gitlab-org/gitlab/blob/master/lib/gitlab/danger/helper.rb)
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for them.
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MARKDOWN
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NO_REVIEWER = 'No reviewer available'.freeze
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NO_MAINTAINER = 'No maintainer available'.freeze
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def spin_for_category(team, project, category, branch_name)
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random = roulette.new_random(branch_name)
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labels = gitlab.mr_labels
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reviewers, traintainers, maintainers =
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%i[reviewer? traintainer? maintainer?].map do |kind|
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team.select do |member|
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member.public_send(kind, project, category, labels) # rubocop:disable GitlabSecurity/PublicSend
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end
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end
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# TODO: take CODEOWNERS into account?
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# https://gitlab.com/gitlab-org/gitlab/issues/26723
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# Make traintainers have triple the chance to be picked as a reviewer
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reviewer = roulette.spin_for_person(reviewers + traintainers + traintainers, random: random)
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maintainer = roulette.spin_for_person(maintainers, random: random)
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"| #{helper.label_for_category(category)} | #{reviewer&.markdown_name || NO_REVIEWER} | #{maintainer&.markdown_name || NO_MAINTAINER} |"
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end
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changes = helper.changes_by_category
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# Ignore any files that are known but uncategorized. Prompt for any unknown files
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changes.delete(:none)
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categories = changes.keys - [:unknown]
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# Ensure to spin for database reviewer/maintainer when ~database is applied (e.g. to review SQL queries)
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categories << :database if gitlab.mr_labels.include?('database') && !categories.include?(:database)
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# Single codebase MRs are reviewed using a slightly different process, so we
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# disable the review roulette for such MRs.
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# CSS Clean up MRs are reviewed using a slightly different process, so we
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# disable the review roulette for such MRs.
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if changes.any? && !gitlab.mr_labels.include?('single codebase') && !gitlab.mr_labels.include?('CSS cleanup')
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# Strip leading and trailing CE/EE markers
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canonical_branch_name =
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roulette.canonical_branch_name(gitlab.mr_json['source_branch'])
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team =
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begin
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roulette.project_team(helper.project_name)
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rescue => err
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warn("Reviewer roulette failed to load team data: #{err.message}")
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[]
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end
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project = helper.project_name
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unknown = changes.fetch(:unknown, [])
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rows = categories.map { |category| spin_for_category(team, project, category, canonical_branch_name) }
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markdown(MESSAGE)
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markdown(CATEGORY_TABLE_HEADER + rows.join("\n")) unless rows.empty?
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markdown(UNKNOWN_FILES_MESSAGE + helper.markdown_list(unknown)) unless unknown.empty?
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end
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