Remove context_commits feature flag

The feature has been enabled by default on self-managed installs
for multiple milestones and has been enabled on production for a
while and no blocking issues were found.

Changelog: other

app/controllers/projects/merge_requests/diffs_controller.rb

@@ -111,9 +111,7 @@ class Projects::MergeRequests::DiffsController < Projects::MergeRequests::Applic
       allow_tree_conflicts: display_merge_conflicts_in_diff?
     )
 
-    if @merge_request.project.context_commits_enabled?
-      options[:context_commits] = @merge_request.recent_context_commits
-    end
+    options[:context_commits] = @merge_request.recent_context_commits
 
     render json: DiffsSerializer.new(request).represent(diffs, options)
   end

app/controllers/projects/merge_requests_controller.rb

@@ -221,8 +221,6 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
   end
 
   def context_commits
-    return render_404 unless project.context_commits_enabled?
-
     # Get commits from repository
     # or from cache if already merged
     commits = ContextCommitsFinder.new(project, @merge_request, { search: params[:search], limit: params[:limit], offset: params[:offset] }).execute

app/models/project.rb

@@ -1008,10 +1008,6 @@ class Project < ApplicationRecord
     Feature.enabled?(:unlink_fork_network_upon_visibility_decrease, self, default_enabled: true)
   end
 
-  def context_commits_enabled?
-    Feature.enabled?(:context_commits, self.group, default_enabled: :yaml)
-  end
-
   # LFS and hashed repository storage are required for using Design Management.
   def design_management_enabled?
     lfs_enabled? && hashed_storage?(:repository)

app/serializers/diffs_entity.rb

@@ -23,7 +23,7 @@ class DiffsEntity < Grape::Entity
     CommitEntity.represent(options[:commit], commit_options(options))
   end
 
-  expose :context_commits, using: API::Entities::Commit, if: -> (diffs, options) { merge_request&.project&.context_commits_enabled? } do |diffs|
+  expose :context_commits, using: API::Entities::Commit do |diffs|
     options[:context_commits]
   end
 
@@ -89,7 +89,7 @@ class DiffsEntity < Grape::Entity
     project_blob_path(merge_request.project, merge_request.diff_head_sha)
   end
 
-  expose :context_commits_diff, if: -> (_) { merge_request&.project&.context_commits_enabled? } do |diffs, options|
+  expose :context_commits_diff do |diffs, options|
     next unless merge_request.context_commits_diff.commits_count > 0
 
     ContextCommitsDiffEntity.represent(

app/views/projects/commits/_commits.html.haml

@@ -22,7 +22,7 @@
 - if context_commits.present?
   %li.commit-header.js-commit-header
     %span.font-weight-bold= n_("%d previously merged commit", "%d previously merged commits", context_commits.count) % context_commits.count
-    - if project.context_commits_enabled? && can_update_merge_request
+    - if can_update_merge_request
       %button.gl-button.btn.btn-default.ml-3.add-review-item-modal-trigger{ type: "button", data: { context_commits_empty: 'false' } }
         = _('Add/remove')
 
@@ -40,7 +40,7 @@
       .gl-alert-content
         = n_('%s additional commit has been omitted to prevent performance issues.', '%s additional commits have been omitted to prevent performance issues.', hidden) % number_with_delimiter(hidden)
 
-- if project.context_commits_enabled? && can_update_merge_request && context_commits&.empty?
+- if can_update_merge_request && context_commits&.empty?
   %button.gl-button.btn.btn-default.mt-3.add-review-item-modal-trigger{ type: "button", data: { context_commits_empty: 'true' } }
     = _('Add previously merged commits')
 

app/views/projects/merge_requests/_commits.html.haml

@@ -5,7 +5,7 @@
     = custom_icon ('illustration_no_commits')
     %h4
       = _('There are no commits yet.')
-    - if @project&.context_commits_enabled? && can_update_merge_request
+    - if can_update_merge_request
       %p
         = _('Push commits to the source branch or add previously merged commits to review them.')
       %button.btn.gl-button.btn-confirm.add-review-item-modal-trigger{ type: "button", data: { commits_empty: 'true', context_commits_empty: 'true' } }
@@ -14,5 +14,5 @@
   %ol#commits-list.list-unstyled
     = render "projects/commits/commits", merge_request: @merge_request
 
-- if @project&.context_commits_enabled? && can_update_merge_request && @merge_request.iid
+- if can_update_merge_request && @merge_request.iid
   .add-review-item-modal-wrapper{ data: { context_commits_path: context_commits_project_json_merge_request_url(@merge_request&.project, @merge_request, :json), target_branch: @merge_request.target_branch, merge_request_iid: @merge_request.iid, project_id: @merge_request.project.id } }

config/feature_flags/development/context_commits.yml

----
-name: context_commits
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/23701
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/320757
-milestone: '12.8'
-type: development
-group: group::code review
-default_enabled: true

doc/user/project/merge_requests/commits.md

@@ -31,15 +31,7 @@ To seamlessly navigate among commits in a merge request:
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/29274) in GitLab 13.12 [with a flag](../../../administration/feature_flags.md) named `context_commits`. Enabled by default.
 > - [Enabled on GitLab.com](https://gitlab.com/gitlab-org/gitlab/-/issues/320757) in GitLab 14.8.
-
-WARNING:
-This feature is in [beta](../../../policy/alpha-beta-support.md#beta-features)
-and is [incomplete](https://gitlab.com/groups/gitlab-org/-/epics/1192).
-
-FLAG:
-On self-managed GitLab, by default this feature is available. To hide the feature,
-ask an administrator to [disable the feature flag](../../../administration/feature_flags.md) named `context_commits`.
-On GitLab.com, this feature is available.
+> - [Generally available](https://gitlab.com/gitlab-org/gitlab/-/issues/320757) in GitLab 14.9. [Feature flag `context_commits`](https://gitlab.com/gitlab-org/gitlab/-/issues/320757) removed.
 
 When reviewing a merge request, it helps to have more context about the changes
 made. That includes unchanged lines in unchanged files, and previous commits

lib/api/merge_requests.rb

@@ -304,10 +304,6 @@ module API
       end
       get ':id/merge_requests/:merge_request_iid/context_commits', feature_category: :code_review, urgency: :high do
         merge_request = find_merge_request_with_access(params[:merge_request_iid])
-        project = merge_request.project
-
-        not_found! unless project.context_commits_enabled?
-
         context_commits =
           paginate(merge_request.merge_request_context_commits).map(&:to_commit)
 
@@ -328,9 +324,6 @@ module API
         end
 
         merge_request = find_merge_request_with_access(params[:merge_request_iid])
-        project = merge_request.project
-
-        not_found! unless project.context_commits_enabled?
 
         authorize!(:update_merge_request, merge_request)
 
@@ -351,9 +344,6 @@ module API
       delete ':id/merge_requests/:merge_request_iid/context_commits', feature_category: :code_review do
         commit_ids = params[:commits]
         merge_request = find_merge_request_with_access(params[:merge_request_iid])
-        project = merge_request.project
-
-        not_found! unless project.context_commits_enabled?
 
         authorize!(:destroy_merge_request, merge_request)
         project = merge_request.target_project

spec/models/project_spec.rb

@@ -7950,47 +7950,6 @@ RSpec.describe Project, factory_default: :keep do
     end
   end
 
-  describe '#context_commits_enabled?' do
-    let_it_be(:group) { create(:group) }
-    let_it_be(:project) { create(:project, namespace: group) }
-
-    subject(:result) { project.context_commits_enabled? }
-
-    context 'when context_commits feature flag is enabled' do
-      before do
-        stub_feature_flags(context_commits: true)
-      end
-
-      it { is_expected.to be_truthy }
-    end
-
-    context 'when context_commits feature flag is disabled' do
-      before do
-        stub_feature_flags(context_commits: false)
-      end
-
-      it { is_expected.to be_falsey }
-    end
-
-    context 'when context_commits feature flag is enabled on project group' do
-      before do
-        stub_feature_flags(context_commits: group)
-      end
-
-      it { is_expected.to be_truthy }
-    end
-
-    context 'when context_commits feature flag is enabled on another group' do
-      let(:another_group) { create(:group) }
-
-      before do
-        stub_feature_flags(context_commits: another_group)
-      end
-
-      it { is_expected.to be_falsey }
-    end
-  end
-
   describe '.not_hidden' do
     it 'lists projects that are not hidden' do
       project = create(:project)