128 lines
4.1 KiB
Ruby
128 lines
4.1 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-ce/blob/master/lib/gitlab/danger/helper.rb)
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for them.
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MARKDOWN
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def spin_for_category(team, project, category, branch_name)
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rng = Random.new(Digest::MD5.hexdigest(branch_name).to_i(16))
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reviewers = team.select { |member| member.reviewer?(project, category) }
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traintainers = team.select { |member| member.traintainer?(project, category) }
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maintainers = team.select { |member| member.maintainer?(project, category) }
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# TODO: take CODEOWNERS into account?
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# https://gitlab.com/gitlab-org/gitlab-ce/issues/57653
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# Make traintainers have triple the chance to be picked as a reviewer
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reviewer = spin_for_person(reviewers + traintainers + traintainers, random: rng)
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maintainer = spin_for_person(maintainers, random: rng)
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"| #{helper.label_for_category(category)} | #{reviewer&.markdown_name} | #{maintainer&.markdown_name} |"
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end
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# Known issue: If someone is rejected due to OOO, and then becomes not OOO, the
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# selection will change on next spin
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def spin_for_person(people, random:)
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person = nil
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people = people.dup
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people.size.times do
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person = people.sample(random: random)
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break person unless out_of_office?(person)
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people -= [person]
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end
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person
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end
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def out_of_office?(person)
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username = CGI.escape(person.username)
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api_endpoint = "https://gitlab.com/api/v4/users/#{username}/status"
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response = HTTParty.get(api_endpoint) # rubocop:disable Gitlab/HTTParty
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if response.code == 200
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response["message"]&.match(/OOO/i)
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else
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false # this is no worse than not checking for OOO
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end
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rescue
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false
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end
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def build_list(items)
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list = items.map { |filename| "* `#{filename}`" }.join("\n")
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if items.size > 10
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"\n<details>\n\n#{list}\n\n</details>"
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else
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list
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end
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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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# 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 = gitlab
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.mr_json['source_branch']
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.gsub(/^[ce]e-/, '')
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.gsub(/-[ce]e$/, '')
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team =
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begin
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helper.project_team
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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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# Exclude the MR author from the team for selection purposes
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team.delete_if { |teammate| teammate.username == gitlab.mr_author }
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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 + build_list(unknown)) unless unknown.empty?
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end
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