Class: Sppuppet

Inherits:
Object
  • Object
show all
Defined in:
lib/tutter/action/sppuppet.rb

Instance Method Summary collapse

Constructor Details

#initialize(settings, client, project, data, event) ⇒ Sppuppet

Returns a new instance of Sppuppet.



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# File 'lib/tutter/action/sppuppet.rb', line 6

def initialize(settings, client, project, data, event)
  @settings = settings
  @settings['plus_ones_required'] ||= 1
  @settings['reports_dir'] ||= '/var/lib/tutter/reports'
  @client = client
  @project = project
  @data = data
  @event = event
end

Instance Method Details

#maybe_merge(pull_request_id, merge_command) ⇒ Object



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# File 'lib/tutter/action/sppuppet.rb', line 55

def maybe_merge(pull_request_id, merge_command)
  votes = {}
  merger = nil
  incident_merge_override = false
  pr = @client.pull_request @project, pull_request_id

  # We fetch the latest commit and it's date.
  last_commit = @client.pull_request_commits(@project, pull_request_id).last
  last_commit_date = last_commit.commit.committer.date

  comments = @client.issue_comments(@project, pull_request_id)

  # Check each comment for +1 and merge comments
  comments.each do |i|
    # Comment is older than last commit.
    # We only want to check newer comments
    next if last_commit_date > i.created_at

    if i.body == '!merge' || i.body.start_with?(':shipit:') || i.body.start_with?(':ship:')
      merger ||= i.attrs[:user].attrs[:login]
      # Count as a +1 if it is not the author
      unless pr.user. == i.attrs[:user].attrs[:login]
        votes[i.attrs[:user].attrs[:login]] = 1
      end
    end

    match = /^(:?([+-])1:?|LGTM)/.match(i.body)
    if match
      score = match[1] == '+' ? 1 : -1
      # pull request submitter cant +1
      unless pr.user. == i.attrs[:user].attrs[:login]
        votes[i.attrs[:user].attrs[:login]] = score
      end
    end

    match = /^(:poop:|:hankey:|-2)/.match(i.body)
    if match
      msg = "Commit cannot be merged so long as a -2 comment appears in the PR."
      return post_comment(pull_request_id, msg)
    end

    if /jira.*INCIDENT/.match(i.body)
      incident_merge_override = true
    end
  end

  if pr.mergeable_state != 'clean' && !incident_merge_override
    msg = "Merge state for is not clean. Current state: #{pr.mergeable_state}\n"
    reassure = "I will try to merge this for you when the builds turn green\n" +
      "If your build fails or becomes stuck for some reason, just say 'rebuild'\n" +
      'If you have an incident and want to skip the tests or the peer review, please post the link to the jira ticket.'
    if merge_command
      return post_comment(pull_request_id, msg + reassure)
    else
      return 200, msg
    end
  end

  return 200, 'No merge comment found' unless merger

  num_votes = votes.values.reduce(0) { |a, e| a + e }
  if num_votes < @settings['plus_ones_required'] && !incident_merge_override
    msg = "Not enough plus ones. #{@settings['plus_ones_required']} required, and only have #{num_votes}"
    return post_comment(pull_request_id, msg)
  end

  json = { url: pr.url,
           title: pr.title,
           opened_by: pr.user.,
           description: pr.body,
           commits: @client.pull_request_commits(@project, pr.number).map { |c| { author: c.author, message: c.commit.message, sha: c.commit.tree.sha } },
           head_sha: pr.head.sha,
           tests: @client.combined_status(@project, pr.head.sha).statuses.map { |s| {state: s.state, url: s.target_url, description: s.description } },
           reviewers: votes.keys,
           deployer: merger }
  # TODO: Word wrap description
  merge_msg = "Title: \#{pr.title}\nOpened by: \#{pr.user.login}\nReviewers: \#{votes.keys.join ', '}\nDeployer: \#{merger}\nURL: \#{pr.url}\nTests: \#{@client.combined_status(@project, pr.head.sha).statuses.map { |s| [s.state, s.description, s.target_url].join(\", \") }.join(\"\\n \")}\n\n\#{pr.body}\n"
  if incident_merge_override
    @client.add_labels_to_an_issue @project, pull_request_id, ['incident']
  end
  begin
    merge_commit = @client.merge_pull_request(@project, pull_request_id, merge_msg)
  rescue Octokit::MethodNotAllowed => e
    return post_comment(pull_request_id, "Pull request not mergeable: #{e.message}")
  end
  puts merge_commit.inspect
  json[:merge_sha] = merge_commit.sha
  report_directory = "#{@settings['reports_dir']}/#{merge_commit.sha[0..1]}/#{merge_commit.sha[2..3]}"
  report_path = "#{report_directory}/#{merge_commit.sha}.json"
  if @settings['generate_reports']
    FileUtils.mkdir_p report_directory
    File.open(report_path, 'w') { |f| f.write(JSON.pretty_generate(json)) }
  end
  return 200, "merging #{pull_request_id} #{@project}"
end

#post_comment(issue, comment) ⇒ Object



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# File 'lib/tutter/action/sppuppet.rb', line 160

def post_comment(issue, comment)
  begin
    @client.add_comment(@project, issue, comment)
    return 200, "Commented:\n" + comment
  rescue Octokit::NotFound
    return 404, 'Octokit returned 404, this could be an issue with your access token'
  rescue Octokit::Unauthorized
    return 401, "Authorization to #{@project} failed, please verify your access token"
  rescue Octokit::TooManyLoginAttempts
    return 429, "Account for #{@project} has been temporary locked down due to to many failed login attempts"
  end
end

#runObject



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# File 'lib/tutter/action/sppuppet.rb', line 16

def run
  case @event
  when 'issue_comment'
    if @data['action'] != 'created'
      # Not a new comment, ignore
      return 200, 'not a new comment, skipping'
    end

    pull_request_id = @data['issue']['number']

    merge_command = (@data['comment']['body'] == '!merge' ||
      @data['comment']['body'].start_with?(':shipit:'))

    return 200, 'Not a merge comment' unless merge_command

    return maybe_merge(pull_request_id, true)

  when 'status'
    return 200, 'Merge state not clean' unless @data['state'] == 'success'
    commit_sha = @data['commit']['sha']
    @client.pull_requests(@project).each do |pr|
      return maybe_merge(pr.number, false) if pr.head.sha == commit_sha
    end
    return 200, "Found no pull requests matching #{commit_sha}"

  when 'pull_request'
    # If a new pull request is opened, comment with instructions
    if @data['action'] == 'opened' && @settings['post_instructions']
      issue = @data['number']
      comment = @settings['instructions'] || "To merge at least #{@settings['plus_ones_required']} person other than the submitter needs to write a comment containing only _+1_ or :+1:. Then write _!merge_ or :shipit: to trigger merging."
      return post_comment(issue, comment)
    else
      return 200, 'Not posting instructions'
    end
  else
    return 200, "Unhandled event type #{@event}"
  end
end