Merge branch 'feature/cycle-analytics-events' into 'master'

Cycle Analytics: Events per stage

Adds list of events to each stage:

- Issue: list of issues created in the last XX days, that have been labeled or added to a milestone.
- Plan: list of commits that reference for the fist time an issue from the last stage.
- Code: list of MR created in this stage
- Test: List of unique builds triggered by the commits.
- Review: List of MR merged
- Staging: List of deployed builds
- Production: list of issues with the time from idea to production

Fixes #23449 

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !6859

2 files changed, 67 insertions, 9 deletions

diff --git a/app/controllers/projects/cycle_analytics/events_controller.rb b/app/controllers/projects/cycle_analytics/events_controller.rb
new file mode 100644
index 00000000000..13b3eec761f
--- /dev/null
+++ b/app/controllers/projects/cycle_analytics/events_controller.rb
@@ -0,0 +1,65 @@
+module Projects
+  module CycleAnalytics
+    class EventsController < Projects::ApplicationController
+      include CycleAnalyticsParams
+    
+      before_action :authorize_read_cycle_analytics!
+      before_action :authorize_read_build!, only: [:test, :staging]
+      before_action :authorize_read_issue!, only: [:issue, :production]
+      before_action :authorize_read_merge_request!, only: [:code, :review]
+
+      def issue
+        render_events(events.issue_events)
+      end
+    
+      def plan
+        render_events(events.plan_events)
+      end
+    
+      def code
+        render_events(events.code_events)
+      end
+    
+      def test
+        options[:branch] = events_params[:branch_name]
+    
+        render_events(events.test_events)
+      end
+    
+      def review
+        render_events(events.review_events)
+      end
+    
+      def staging
+        render_events(events.staging_events)
+      end
+    
+      def production
+        render_events(events.production_events)
+      end
+    
+      private
+    
+      def render_events(events_list)
+        respond_to do |format|
+          format.html
+          format.json { render json: { events: events_list } }
+        end
+      end
+    
+      def events
+        @events ||= Gitlab::CycleAnalytics::Events.new(project: project, options: options)
+      end
+    
+      def options
+        @options ||= { from: start_date(events_params), current_user: current_user }
+      end
+    
+      def events_params
+        return {} unless params[:events].present?
+    
+        params[:events].slice(:start_date, :branch_name)
+      end
+    end
+  end
+end
diff --git a/app/controllers/projects/cycle_analytics_controller.rb b/app/controllers/projects/cycle_analytics_controller.rb
index 16a7b1fc6e2..96eb75a0547 100644
--- a/app/controllers/projects/cycle_analytics_controller.rb
+++ b/app/controllers/projects/cycle_analytics_controller.rb
@@ -1,11 +1,12 @@
 class Projects::CycleAnalyticsController < Projects::ApplicationController
   include ActionView::Helpers::DateHelper
   include ActionView::Helpers::TextHelper
+  include CycleAnalyticsParams
 
   before_action :authorize_read_cycle_analytics!
 
   def show
-    @cycle_analytics = CycleAnalytics.new(@project, from: parse_start_date)
+    @cycle_analytics = ::CycleAnalytics.new(@project, from: start_date(cycle_analytics_params))
 
     respond_to do |format|
       format.html
@@ -15,14 +16,6 @@ class Projects::CycleAnalyticsController < Projects::ApplicationController
 
   private
 
-  def parse_start_date
-    case cycle_analytics_params[:start_date]
-    when '30' then 30.days.ago
-    when '90' then 90.days.ago
-    else 90.days.ago
-    end
-  end
-
   def cycle_analytics_params
     return {} unless params[:cycle_analytics].present?