diff options
author | Sean McGivern <sean@gitlab.com> | 2019-04-08 13:44:57 +0300 |
---|---|---|
committer | Sean McGivern <sean@gitlab.com> | 2019-04-08 13:56:17 +0300 |
commit | 28531ab43666b5fdf37e0a70db3bcbf7d3f92183 (patch) | |
tree | 8ce7838697b30f3dbbf59e974738a1b401593f6d /danger/roulette/Dangerfile | |
parent | 575ec3af131e9c101edfc50ee563381b37c8076e (diff) |
Pick reviewers based on branch name
Change reviewer roulette to always pick the same reviewers for the same
branch name. We do this by:
1. Making the branch name 'canonical' across CE and EE by stripping a
leading 'ce-' or 'ee-' and a trailing '-ce' or '-ee'. If people are
following our branch naming guidelines, this should give the same
branch name in both repos.
2. Converting the branch name to a stable integer by taking the integer
form of its MD5.
3. Passing that integer as a seed to Ruby's `Random` class, which 'may
be used to ensure repeatable sequences of pseudo-random numbers
between different runs of the program' (from the Ruby documentation).
The upshot is that the same branch name (in CE and EE) should always
pick the same reviewers, and those should be evenly distributed across
the set of possible reviewers due to the use of MD5.
Diffstat (limited to 'danger/roulette/Dangerfile')
-rw-r--r-- | danger/roulette/Dangerfile | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/danger/roulette/Dangerfile b/danger/roulette/Dangerfile index 406dc2c9724..e6820f49ee2 100644 --- a/danger/roulette/Dangerfile +++ b/danger/roulette/Dangerfile @@ -1,5 +1,7 @@ # frozen_string_literal: true +require 'digest/md5' + MESSAGE = <<MARKDOWN ## Reviewer roulette @@ -29,7 +31,9 @@ Please consider creating a merge request to for them. MARKDOWN -def spin(team, project, category) +def spin(team, project, category, branch_name) + rng = Random.new(Digest::MD5.hexdigest(branch_name).to_i(16)) + reviewers = team.select { |member| member.reviewer?(project, category) } traintainers = team.select { |member| member.traintainer?(project, category) } maintainers = team.select { |member| member.maintainer?(project, category) } @@ -41,8 +45,8 @@ def spin(team, project, category) # https://gitlab.com/gitlab-org/gitlab-ce/issues/57653 # Make traintainers have triple the chance to be picked as a reviewer - reviewer = (reviewers + traintainers + traintainers).sample - maintainer = maintainers.sample + reviewer = (reviewers + traintainers + traintainers).sample(random: rng) + maintainer = maintainers.sample(random: rng) "| #{helper.label_for_category(category)} | #{reviewer&.markdown_name} | #{maintainer&.markdown_name} |" end @@ -68,6 +72,12 @@ categories = changes.keys - [:unknown] # CSS Clean up MRs are reviewed using a slightly different process, so we # disable the review roulette for such MRs. if changes.any? && !gitlab.mr_labels.include?('single codebase') && !gitlab.mr_labels.include?('CSS cleanup') + # Strip leading and trailing CE/EE markers + canonical_branch_name = gitlab + .mr_json['source_branch'] + .gsub(/^[ce]e-/, '') + .gsub(/-[ce]e$/, '') + team = begin helper.project_team @@ -82,7 +92,7 @@ if changes.any? && !gitlab.mr_labels.include?('single codebase') && !gitlab.mr_l project = helper.project_name unknown = changes.fetch(:unknown, []) - rows = categories.map { |category| spin(team, project, category) } + rows = categories.map { |category| spin(team, project, category, canonical_branch_name) } markdown(MESSAGE) markdown(CATEGORY_TABLE_HEADER + rows.join("\n")) unless rows.empty? |