Add the "Code" Cycle Analytics section.

1. Record the `wip_flag_first_removed_at` and
   `first_assigned_to_user_other_than_author` metrics for a merge
   request. Use a `merge_request_metrics` table, similar to the one for
   `issues`. Metrics are recorded `after_save`.

2. Move larger queries to a `CycleAnalytics::Queries` module.

1 files changed, 15 insertions, 0 deletions

diff --git a/app/models/merge_request/metrics.rb b/app/models/merge_request/metrics.rb
new file mode 100644
index 00000000000..7f7cf95e388
--- /dev/null
+++ b/app/models/merge_request/metrics.rb
@@ -0,0 +1,15 @@
+class MergeRequest::Metrics < ActiveRecord::Base
+  belongs_to :merge_request
+
+  def record!
+    if !merge_request.work_in_progress? && self.wip_flag_first_removed_at.blank?
+      self.wip_flag_first_removed_at = Time.now
+    end
+
+    if merge_request.author_id != merge_request.assignee_id && self.first_assigned_to_user_other_than_author.blank?
+      self.first_assigned_to_user_other_than_author = Time.now
+    end
+
+    self.save if self.changed?
+  end
+end