gitlab_pipeline_stat.rb

require 'gitlab' # install by Gemfile
require 'pry' # install by Gemfile
require 'csv'

Gitlab.configure do |config|
  config.endpoint = 'YOUR_GITLAB_URL'
  config.private_token = 'YOUR_GITLAB_PRIVATE_TOKEN'
end

Gitlab.projects.auto_paginate do |project|
  @project = project and break if project.name == 'YOUR_PROJECT_NAME'
end

# per_pageの最大値は100件。それ以上の数値を指定すると勝手に100にされる
pipelines = Gitlab.pipelines(@project.id, per_page: 100)
stats = []
100.times do |i|
  count_success = pipelines.select { |pipeline| pipeline.status == 'success' }.size
  time_latest = Gitlab.pipeline(@project.id, pipelines[0].id).created_at
  time_oldest = Gitlab.pipeline(@project.id, pipelines[-1].id).created_at
  stats << OpenStruct.new(count: count_success, time_oldest: DateTime.parse(time_oldest), time_latest: DateTime.parse(time_latest))
  pipelines = pipelines.next_page
  STDERR.print "Progress: #{format('%3d', i + 1)}/100\r"
  sleep 1
end
STDERR.puts ''

# 500件ずつにまとめる
stats_bind = stats.each_slice(5).map do |stat|
  OpenStruct.new(count: stat.map(&:count).sum, time_oldest: stat[-1].time_oldest, time_latest: stat[0].time_latest)
end

CSV.open('gitlab_pipeline_stat.csv', 'w') do |csv|
  stats_bind.each do |stat|
    csv << [stat.count, stat.time_oldest.strftime('%Y-%m-%d'), stat.time_latest.strftime('%Y-%m-%d')]
  end
end