6 files changed, 24 insertions, 12 deletions
diff --git a/lib/api/branches.rb b/lib/api/branches.rb
index 19152c9f395..cdef1b546a9 100644
--- a/lib/api/branches.rb
+++ b/lib/api/branches.rb
@@ -29,12 +29,11 @@ module API
         use :pagination
       end
       get ':id/repository/branches' do
-        branches = ::Kaminari.paginate_array(user_project.repository.branches.sort_by(&:name))
+        repository = user_project.repository
+        branches = ::Kaminari.paginate_array(repository.branches.sort_by(&:name))
+        merged_branch_names = repository.merged_branch_names(branches.map(&:name))
 
-        # n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/37442
-        Gitlab::GitalyClient.allow_n_plus_1_calls do
-          present paginate(branches), with: Entities::Branch, project: user_project
-        end
+        present paginate(branches), with: Entities::Branch, project: user_project, merged_branch_names: merged_branch_names
       end
 
       resource ':id/repository/branches/:branch', requirements: BRANCH_ENDPOINT_REQUIREMENTS do
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index 398a7906dcb..a382db92e8d 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -242,10 +242,7 @@ module API
       end
 
       expose :merged do |repo_branch, options|
-        # n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/37442
-        Gitlab::GitalyClient.allow_n_plus_1_calls do
-          options[:project].repository.merged_to_root_ref?(repo_branch.name)
-        end
+        options[:project].repository.merged_to_root_ref?(repo_branch, options[:merged_branch_names])
       end
 
       expose :protected do |repo_branch, options|
@@ -478,6 +475,10 @@ module API
       expose :subscribed do |merge_request, options|
         merge_request.subscribed?(options[:current_user], options[:project])
       end
+
+      expose :changes_count do |merge_request, _options|
+        merge_request.merge_request_diff.real_size
+      end
     end
 
     class MergeRequestChanges < MergeRequest
diff --git a/lib/api/groups.rb b/lib/api/groups.rb
index e817dcbbc4b..340a7cecf09 100644
--- a/lib/api/groups.rb
+++ b/lib/api/groups.rb
@@ -37,6 +37,8 @@ module API
     end
 
     resource :groups do
+      include CustomAttributesEndpoints
+
       desc 'Get a groups list' do
         success Entities::Group
       end
@@ -51,7 +53,12 @@ module API
         use :pagination
       end
       get do
-        find_params = { all_available: params[:all_available], owned: params[:owned] }
+        find_params = {
+          all_available: params[:all_available],
+          owned: params[:owned],
+          custom_attributes: params[:custom_attributes]
+        }
+
         groups = GroupsFinder.new(current_user, find_params).execute
         groups = groups.search(params[:search]) if params[:search].present?
         groups = groups.where.not(id: params[:skip_groups]) if params[:skip_groups].present?
diff --git a/lib/api/helpers.rb b/lib/api/helpers.rb
index 1c12166e434..5f9b94cc89c 100644
--- a/lib/api/helpers.rb
+++ b/lib/api/helpers.rb
@@ -328,6 +328,7 @@ module API
       finder_params[:archived] = params[:archived]
       finder_params[:search] = params[:search] if params[:search]
       finder_params[:user] = params.delete(:user) if params[:user]
+      finder_params[:custom_attributes] = params[:custom_attributes] if params[:custom_attributes]
       finder_params
     end
 
diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index aab7a6c3f93..4cd7e714aa2 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -119,6 +119,8 @@ module API
     end
 
     resource :projects do
+      include CustomAttributesEndpoints
+
       desc 'Get a list of visible projects for authenticated user' do
         success Entities::BasicProjectDetails
       end
diff --git a/lib/api/v3/branches.rb b/lib/api/v3/branches.rb
index 69cd12de72c..b201bf77667 100644
--- a/lib/api/v3/branches.rb
+++ b/lib/api/v3/branches.rb
@@ -14,9 +14,11 @@ module API
           success ::API::Entities::Branch
         end
         get ":id/repository/branches" do
-          branches = user_project.repository.branches.sort_by(&:name)
+          repository = user_project.repository
+          branches = repository.branches.sort_by(&:name)
+          merged_branch_names = repository.merged_branch_names(branches.map(&:name))
 
-          present branches, with: ::API::Entities::Branch, project: user_project
+          present branches, with: ::API::Entities::Branch, project: user_project, merged_branch_names: merged_branch_names
         end
 
         desc 'Delete a branch'