Rewrite VSM development fixtures

This change rewrites VSM development fixtures by creating the seed data
only within an isolated project.

db/fixtures/development/17_cycle_analytics.rb

+# frozen_string_literal: true
+
 require './spec/support/sidekiq_middleware'
 require './spec/support/helpers/test_env'
 
+# Usage:
+#
+# Simple invocation always creates a new project:
+#
+# FILTER=cycle_analytics SEED_CYCLE_ANALYTICS=1 bundle exec rake db:seed_fu
+#
+# Create more issues/MRs:
+#
+# CYCLE_ANALYTICS_ISSUE_COUNT=100 FILTER=cycle_analytics SEED_CYCLE_ANALYTICS=1 bundle exec rake db:seed_fu
+#
+# Run for an existing project
+#
+# CYCLE_ANALYTICS_SEED_PROJECT_ID=10 FILTER=cycle_analytics SEED_CYCLE_ANALYTICS=1 bundle exec rake db:seed_fu
+
 class Gitlab::Seeder::CycleAnalytics
-  def initialize(project, perf: false)
-    @project = project
-    @user = User.admins.first
-    @issue_count = perf ? 1000 : ENV.fetch('CYCLE_ANALYTICS_ISSUE_COUNT', 5).to_i
+  attr_reader :project, :issues, :merge_requests, :developers
+
+  FLAG = 'SEED_CYCLE_ANALYTICS'
+  PERF_TEST = 'CYCLE_ANALYTICS_PERF_TEST'
+
+  ISSUE_STAGE_MAX_DURATION_IN_HOURS = 72
+  PLAN_STAGE_MAX_DURATION_IN_HOURS = 48
+  CODE_STAGE_MAX_DURATION_IN_HOURS = 72
+  TEST_STAGE_MAX_DURATION_IN_HOURS = 5
+  REVIEW_STAGE_MAX_DURATION_IN_HOURS = 72
+  DEPLOYMENT_MAX_DURATION_IN_HOURS = 48
+
+  def self.seeder_base_on_env(project)
+    if ENV[FLAG]
+      self.new(project: project)
+    elsif ENV[PERF_TEST]
+      self.new(project: project, perf: true)
+    end
   end
 
-  def seed_metrics!
-    @issue_count.times do |index|
-      # Issue
-      Timecop.travel 5.days.from_now
-      title = "#{FFaker::Product.brand}-#{FFaker::Product.brand}-#{rand(1000)}"
-      issue = Issue.create(project: @project, title: title, author: @user)
-      issue_metrics = issue.metrics
-
-      # Milestones / Labels
-      Timecop.travel 5.days.from_now
-
-      if index.even?
-        issue_metrics.first_associated_with_milestone_at = rand(6..12).hours.from_now
-      else
-        issue_metrics.first_added_to_board_at = rand(6..12).hours.from_now
-      end
-
-      # Commit
-      Timecop.travel 5.days.from_now
-      issue_metrics.first_mentioned_in_commit_at = rand(6..12).hours.from_now
-
-      # MR
-      Timecop.travel 5.days.from_now
-      branch_name = "#{FFaker::Product.brand}-#{FFaker::Product.brand}-#{rand(1000)}"
-      @project.repository.add_branch(@user, branch_name, 'master')
-      merge_request = MergeRequest.create(target_project: @project, source_project: @project, source_branch: branch_name, target_branch: 'master', title: branch_name, author: @user)
-      merge_request_metrics = merge_request.metrics
-
-      # MR closing issues
-      Timecop.travel 5.days.from_now
-      MergeRequestsClosingIssues.create!(issue: issue, merge_request: merge_request)
-
-      # Merge
-      Timecop.travel 5.days.from_now
-      merge_request_metrics.merged_at = rand(6..12).hours.from_now
-
-      # Start build
-      Timecop.travel 5.days.from_now
-      merge_request_metrics.latest_build_started_at = rand(6..12).hours.from_now
-
-      # Finish build
-      Timecop.travel 5.days.from_now
-      merge_request_metrics.latest_build_finished_at = rand(6..12).hours.from_now
-
-      # Deploy to production
-      Timecop.travel 5.days.from_now
-      merge_request_metrics.first_deployed_to_production_at = rand(6..12).hours.from_now
-
-      issue_metrics.save!
-      merge_request_metrics.save!
-
-      print '.'
-    end
+  def initialize(project: nil, perf: false)
+    @project = project || create_new_vsm_project
+    @issue_count = perf ? 1000 : ENV.fetch('CYCLE_ANALYTICS_ISSUE_COUNT', 5).to_i
+    @issues = []
+    @merge_requests = []
+    @developers = []
   end
 
   def seed!
-    Sidekiq::Worker.skipping_transaction_check do
-      Sidekiq::Testing.inline! do
-        issues = create_issues
-        puts '.'
-
-        # Stage 1
-        Timecop.travel 5.days.from_now
-        add_milestones_and_list_labels(issues)
-        print '.'
-
-        # Stage 2
-        Timecop.travel 5.days.from_now
-        branches = mention_in_commits(issues)
-        print '.'
-
-        # Stage 3
-        Timecop.travel 5.days.from_now
-        merge_requests = create_merge_requests_closing_issues(issues, branches)
-        print '.'
-
-        # Stage 4
-        Timecop.travel 5.days.from_now
-        run_builds(merge_requests)
-        print '.'
-
-        # Stage 5
-        Timecop.travel 5.days.from_now
-        merge_merge_requests(merge_requests)
-        print '.'
-
-        # Stage 6 / 7
-        Timecop.travel 5.days.from_now
-        deploy_to_production(merge_requests)
-        print '.'
-      end
-    end
-
-    print '.'
+    create_developers!
+    create_issues!
+
+    seed_issue_stage!
+    seed_plan_stage!
+    seed_code_stage!
+    seed_test_stage!
+    seed_review_stage!
+    seed_staging_stage!
+
+    puts "Successfully seeded '#{project.full_path}' for Value Stream Management!"
+    puts "URL: #{Rails.application.routes.url_helpers.project_url(project)}"
   end
 
   private
 
-  def create_issues
-    Array.new(@issue_count) do
-      issue_params = {
-        title: "Value Stream Analytics: #{FFaker::Lorem.sentence(6)}",
-        description: FFaker::Lorem.sentence,
-        state: 'opened',
-        assignees: [@project.team.users.sample]
-      }
-
-      Issues::CreateService.new(@project, @project.team.users.sample, issue_params).execute
-    end
-  end
-
-  def add_milestones_and_list_labels(issues)
-    issues.shuffle.map.with_index do |issue, index|
-      Timecop.travel 12.hours.from_now
+  def seed_issue_stage!
+    issues.each do |issue|
+      time = within_end_time(issue.created_at + rand(ISSUE_STAGE_MAX_DURATION_IN_HOURS).hours)
 
-      if index.even?
-        issue.update(milestone: @project.milestones.sample)
+      if issue.id.even?
+        issue.metrics.update!(first_associated_with_milestone_at: time)
       else
-        label_name = "#{FFaker::Product.brand}-#{FFaker::Product.brand}-#{rand(1000)}"
-        list_label = FactoryBot.create(:label, title: label_name, project: issue.project)
-        FactoryBot.create(:list, board: FactoryBot.create(:board, project: issue.project), label: list_label)
-        issue.update(labels: [list_label])
+        issue.metrics.update!(first_added_to_board_at: time)
       end
-
-      issue
     end
   end
 
-  def mention_in_commits(issues)
-    issues.map do |issue|
-      Timecop.travel 12.hours.from_now
+  def seed_plan_stage!
+    issues.each do |issue|
+      plan_stage_start = issue.metrics.first_associated_with_milestone_at || issue.metrics.first_added_to_board_at
 
-      branch_name = filename = "#{FFaker::Product.brand}-#{FFaker::Product.brand}-#{rand(1000)}"
+      first_mentioned_in_commit_at = within_end_time(plan_stage_start + rand(PLAN_STAGE_MAX_DURATION_IN_HOURS).hours)
+      issue.metrics.update!(first_mentioned_in_commit_at: first_mentioned_in_commit_at)
+    end
+  end
 
-      issue.project.repository.add_branch(@user, branch_name, 'master')
+  def seed_code_stage!
+    issues.each do |issue|
+      merge_request = FactoryBot.create(
+        :merge_request,
+        target_project: project,
+        source_project: project,
+        source_branch: "#{issue.iid}-feature-branch",
+        target_branch: 'master',
+        author: developers.sample,
+        created_at: within_end_time(issue.metrics.first_mentioned_in_commit_at + rand(CODE_STAGE_MAX_DURATION_IN_HOURS).hours)
+      )
 
-      commit_sha = issue.project.repository.create_file(@user, filename, "content", message: "Commit for #{issue.to_reference}", branch_name: branch_name)
-      issue.project.repository.commit(commit_sha)
+      @merge_requests << merge_request
 
-      ::Git::BranchPushService.new(
-        issue.project,
-        @user,
-        change: {
-          oldrev: issue.project.repository.commit("master").sha,
-          newrev: commit_sha,
-          ref: 'refs/heads/master'
-        }
-      ).execute
+      MergeRequestsClosingIssues.create!(issue: issue, merge_request: merge_request)
+    end
+  end
 
-      branch_name
+  def seed_test_stage!
+    merge_requests.each do |merge_request|
+      pipeline = FactoryBot.create(:ci_pipeline, :success, project: project)
+      build = FactoryBot.create(:ci_build, pipeline: pipeline, project: project, user: developers.sample)
+
+      merge_request.metrics.update!(
+        latest_build_started_at: merge_request.created_at,
+        latest_build_finished_at: within_end_time(merge_request.created_at + TEST_STAGE_MAX_DURATION_IN_HOURS.hours),
+        pipeline_id: build.commit_id
+      )
     end
   end
 
-  def create_merge_requests_closing_issues(issues, branches)
-    issues.zip(branches).map do |issue, branch|
-      Timecop.travel 12.hours.from_now
+  def seed_review_stage!
+    merge_requests.each do |merge_request|
+      merge_request.metrics.update!(merged_at: within_end_time(merge_request.created_at + REVIEW_STAGE_MAX_DURATION_IN_HOURS.hours))
+    end
+  end
 
-      opts = {
-        title: 'Value Stream Analytics merge_request',
-        description: "Fixes #{issue.to_reference}",
-        source_branch: branch,
-        target_branch: 'master'
-      }
+  def seed_staging_stage!
+    merge_requests.each do |merge_request|
+      merge_request.metrics.update!(first_deployed_to_production_at: within_end_time(merge_request.metrics.merged_at + DEPLOYMENT_MAX_DURATION_IN_HOURS.hours))
+    end
+  end
 
-      MergeRequests::CreateService.new(issue.project, @user, opts).execute
+  def create_issues!
+    @issue_count.times do
+      Timecop.travel start_time + rand(5).days do
+        title = "#{FFaker::Product.brand}-#{suffix}"
+        @issues << Issue.create!(project: project, title: title, author: developers.sample)
+      end
     end
   end
 
-  def run_builds(merge_requests)
-    merge_requests.each do |merge_request|
-      Timecop.travel 12.hours.from_now
+  def create_developers!
+    5.times do |i|
+      user = FactoryBot.create(
+        :user,
+        name: "VSM User#{i}",
+        username: "vsm-user-#{i}-#{suffix}",
+        email: "vsm-user-#{i}@#{suffix}.com"
+      )
 
-      service = Ci::CreatePipelineService.new(merge_request.project,
-                                              @user,
-                                              ref: "refs/heads/#{merge_request.source_branch}")
-      pipeline = service.execute(:push, ignore_skip_ci: true, save_on_errors: false)
+      project.group.add_developer(user)
+      project.add_developer(user)
 
-      pipeline.builds.each(&:enqueue) # make sure all pipelines in pending state
-      pipeline.builds.each(&:run!)
-      pipeline.update_legacy_status
+      @developers << user
     end
   end
 
-  def merge_merge_requests(merge_requests)
-    merge_requests.each do |merge_request|
-      Timecop.travel 12.hours.from_now
+  def create_new_vsm_project
+    project = FactoryBot.create(
+      :project,
+      name: "Value Stream Management Project #{suffix}",
+      path: "vsmp-#{suffix}",
+      creator: admin,
+      namespace: FactoryBot.create(
+        :group,
+        name: "Value Stream Management Group (#{suffix})",
+        path: "vsmg-#{suffix}"
+      )
+    )
+
+    project.create_repository
+    project
+  end
 
-      MergeRequests::MergeService.new(merge_request.project, @user).execute(merge_request)
-    end
+  def admin
+    @admin ||= User.admins.first
   end
 
-  def deploy_to_production(merge_requests)
-    merge_requests.each do |merge_request|
-      next unless merge_request.head_pipeline
+  def suffix
+    @suffix ||= Time.now.to_i
+  end
 
-      Timecop.travel 12.hours.from_now
+  def start_time
+    @start_time ||= 25.days.ago
+  end
 
-      job = merge_request.head_pipeline.builds.where.not(environment: nil).last
+  def end_time
+    @end_time ||= Time.now
+  end
 
-      job.success!
-      job.pipeline.update_legacy_status
-    end
+  def within_end_time(time)
+    [time, end_time].min
   end
 end
 
 Gitlab::Seeder.quiet do
-  flag = 'SEED_CYCLE_ANALYTICS'
-
-  if ENV[flag]
-    Project.not_mass_generated.find_each do |project|
-      # This seed naively assumes that every project has a repository, and every
-      # repository has a `master` branch, which may be the case for a pristine
-      # GDK seed, but is almost never true for a GDK that's actually had
-      # development performed on it.
-      next unless project.repository_exists?
-      next unless project.repository.commit('master')
-
-      seeder = Gitlab::Seeder::CycleAnalytics.new(project)
-      seeder.seed!
-    end
-  elsif ENV['CYCLE_ANALYTICS_PERF_TEST']
-    seeder = Gitlab::Seeder::CycleAnalytics.new(Project.order(:id).first, perf: true)
+  project_id = ENV['CYCLE_ANALYTICS_SEED_PROJECT_ID']
+  project = Project.find(project_id) if project_id
+
+  seeder = Gitlab::Seeder::CycleAnalytics.seeder_base_on_env(project)
+
+  if seeder
     seeder.seed!
-  elsif ENV['CYCLE_ANALYTICS_POPULATE_METRICS_DIRECTLY']
-    seeder = Gitlab::Seeder::CycleAnalytics.new(Project.order(:id).first, perf: true)
-    seeder.seed_metrics!
   else
-    puts "Skipped. Use the `#{flag}` environment variable to enable."
+    puts "Skipped. Use the `#{Gitlab::Seeder::CycleAnalytics::FLAG}` environment variable to enable."
   end
 end