Bring back Rugged implementation of find_commit

This brings back some of the changes in
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20339.

For users using Gitaly on top of NFS, accessing the Git data directly
via Rugged is more performant than Gitaly. This merge request introduces
the feature flag `rugged_find_commit` to activate Rugged paths.

There are also Rake tasks `gitlab:features:enable_rugged` and
`gitlab:features:disable_rugged` to enable/disable these feature
flags altogether.

Part of four Rugged changes identified in
https://gitlab.com/gitlab-org/gitlab-ce/issues/57317.

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/tasks/gitlab/features.rake b/lib/tasks/gitlab/features.rake
new file mode 100644
index 00000000000..d115961108e
--- /dev/null
+++ b/lib/tasks/gitlab/features.rake
@@ -0,0 +1,24 @@
+namespace :gitlab do
+  namespace :features do
+    desc 'GitLab | Features | Enable direct Git access via Rugged for NFS'
+    task enable_rugged: :environment do
+      set_rugged_feature_flags(true)
+      puts 'All Rugged feature flags were enabled.'
+    end
+
+    task disable_rugged: :environment do
+      set_rugged_feature_flags(false)
+      puts 'All Rugged feature flags were disabled.'
+    end
+  end
+
+  def set_rugged_feature_flags(status)
+    Gitlab::Git::RuggedImpl::Repository::FEATURE_FLAGS.each do |flag|
+      if status
+        Feature.enable(flag)
+      else
+        Feature.disable(flag)
+      end
+    end
+  end
+end