Merge branch 'master' into 38869-templates38869-templates

* master: (50 commits)
  remove ambiguity about which resource type to be using for new sessions
  Backport changes from refactor sidebar weight block Vue and move to Issue Boards
  Migrate Gitlab::Git::Repository#cherry_pick to Gitaly
  show status of issue links in wiki page
  issue note component rename
  Prevent job link form rendering when user does not have permissions
  Move SingleRepositoryWorker#fsck into Gitlab::Git::Repository
  Import axios utils in commons
  Update parser gem to remove warning about wrong ruby version
  Merge branch 'master-i18n' into 'master'
  Reduce pipeline chain life span to minimize side effects
  Add CHANGELOG entry
  Refactor GCP Client#user_agent_header to use #tap
  Remove seed file from the development env
  Fixed bug
  Fix watch level for mentions in description
  Add notice to gollum initializer
  Add underline hover state to all links
  Moving query to base count service
  Added default order to UserFinder
  ...

1 files changed, 50 insertions, 6 deletions

diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index ce332fe85d2..7cec8da013d 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -88,13 +88,29 @@ module API
     end
 
     class BasicProjectDetails < ProjectIdentity
-      expose :default_branch, :tag_list
+      include ::API::ProjectsRelationBuilder
+
+      expose :default_branch
+      # Avoids an N+1 query: https://github.com/mbleigh/acts-as-taggable-on/issues/91#issuecomment-168273770
+      expose :tag_list do |project|
+        # project.tags.order(:name).pluck(:name) is the most suitable option
+        # to avoid loading all the ActiveRecord objects but, if we use it here
+        # it override the preloaded associations and makes a query
+        # (fixed in https://github.com/rails/rails/pull/25976).
+        project.tags.map(&:name).sort
+      end
       expose :ssh_url_to_repo, :http_url_to_repo, :web_url
       expose :avatar_url do |project, options|
         project.avatar_url(only_path: false)
       end
       expose :star_count, :forks_count
       expose :last_activity_at
+
+      def self.preload_relation(projects_relation, options =  {})
+        projects_relation.preload(:project_feature, :route)
+                         .preload(namespace: [:route, :owner],
+                                  tags: :taggings)
+      end
     end
 
     class Project < BasicProjectDetails
@@ -146,7 +162,7 @@ module API
       expose :shared_runners_enabled
       expose :lfs_enabled?, as: :lfs_enabled
       expose :creator_id
-      expose :namespace, using: 'API::Entities::Namespace'
+      expose :namespace, using: 'API::Entities::NamespaceBasic'
       expose :forked_from_project, using: Entities::BasicProjectDetails, if: lambda { |project, options| project.forked? }
       expose :import_status
       expose :import_error, if: lambda { |_project, options| options[:user_can_admin_project] }
@@ -156,7 +172,7 @@ module API
       expose :public_builds, as: :public_jobs
       expose :ci_config_path
       expose :shared_with_groups do |project, options|
-        SharedGroup.represent(project.project_group_links.all, options)
+        SharedGroup.represent(project.project_group_links, options)
       end
       expose :only_allow_merge_if_pipeline_succeeds
       expose :request_access_enabled
@@ -164,6 +180,18 @@ module API
       expose :printing_merge_request_link_enabled
 
       expose :statistics, using: 'API::Entities::ProjectStatistics', if: :statistics
+
+      def self.preload_relation(projects_relation, options =  {})
+        super(projects_relation).preload(:group)
+                                .preload(project_group_links: :group,
+                                         fork_network: :root_project,
+                                         forked_project_link: :forked_from_project,
+                                         forked_from_project: [:route, :forks, namespace: :route, tags: :taggings])
+      end
+
+      def self.forks_counting_projects(projects_relation)
+        projects_relation + projects_relation.map(&:forked_from_project).compact
+      end
     end
 
     class ProjectStatistics < Grape::Entity
@@ -618,9 +646,11 @@ module API
       expose :created_at
     end
 
-    class Namespace < Grape::Entity
+    class NamespaceBasic < Grape::Entity
       expose :id, :name, :path, :kind, :full_path, :parent_id
+    end
 
+    class Namespace < NamespaceBasic
       expose :members_count_with_descendants, if: -> (namespace, opts) { expose_members_count_with_descendants?(namespace, opts) } do |namespace, _|
         namespace.users_with_descendants.count
       end
@@ -680,7 +710,7 @@ module API
           if options.key?(:project_members)
             (options[:project_members] || []).find { |member| member.source_id == project.id }
           else
-            project.project_members.find_by(user_id: options[:current_user].id)
+            project.project_member(options[:current_user])
           end
         end
 
@@ -689,11 +719,25 @@ module API
             if options.key?(:group_members)
               (options[:group_members] || []).find { |member| member.source_id == project.namespace_id }
             else
-              project.group.group_members.find_by(user_id: options[:current_user].id)
+              project.group.group_member(options[:current_user])
             end
           end
         end
       end
+
+      def self.preload_relation(projects_relation, options = {})
+        relation = super(projects_relation, options)
+
+        unless options.key?(:group_members)
+          relation = relation.preload(group: [group_members: [:source, user: [notification_settings: :source]]])
+        end
+
+        unless options.key?(:project_members)
+          relation = relation.preload(project_members: [:source, user: [notification_settings: :source]])
+        end
+
+        relation
+      end
     end
 
     class LabelBasic < Grape::Entity