Pass Gitaly resource path to gitlab-workhorse if Gitaly is enabled

changelogs/unreleased/feature-gitaly-feature-flag.yml

+---
+title: Pass Gitaly resource path to gitlab-workhorse if Gitaly is enabled
+merge_request: 8440
+author:

config/initializers/1_settings.rb

@@ -403,6 +403,12 @@ Settings.rack_attack.git_basic_auth['maxretry'] ||= 10
 Settings.rack_attack.git_basic_auth['findtime'] ||= 1.minute
 Settings.rack_attack.git_basic_auth['bantime'] ||= 1.hour
 
+#
+# Gitaly
+#
+Settings['gitaly'] ||= Settingslogic.new({})
+Settings.gitaly['socket_path'] ||= ENV['GITALY_SOCKET_PATH']
+
 #
 # Testing settings
 #

lib/gitlab/workhorse.rb

@@ -15,10 +15,17 @@ module Gitlab
 
     class << self
       def git_http_ok(repository, user)
-        {
+        params = {
           GL_ID: Gitlab::GlId.gl_id(user),
           RepoPath: repository.path_to_repo,
         }
+
+        params.merge!(
+          GitalySocketPath: Gitlab.config.gitaly.socket_path,
+          GitalyResourcePath: "/projects/#{repository.project.id}/git-http/info-refs",
+        ) if Gitlab.config.gitaly.socket_path.present?
+
+        params
       end
 
       def lfs_upload_ok(oid, size)

spec/lib/gitlab/workhorse_spec.rb

@@ -174,4 +174,27 @@ describe Gitlab::Workhorse, lib: true do
       described_class.verify_api_request!(headers)
     end
   end
+
+  describe '.git_http_ok' do
+    let(:user) { create(:user) }
+
+    subject { described_class.git_http_ok(repository, user) }
+
+    it { expect(subject).to eq({ GL_ID: "user-#{user.id}", RepoPath: repository.path_to_repo }) }
+
+    context 'when Gitaly socket path is present' do
+      let(:gitaly_socket_path) { '/tmp/gitaly.sock' }
+
+      before do
+        allow(Gitlab.config.gitaly).to receive(:socket_path).and_return(gitaly_socket_path)
+      end
+
+      it 'includes Gitaly params in the returned value' do
+        expect(subject).to include({
+          GitalyResourcePath: "/projects/#{repository.project.id}/git-http/info-refs",
+          GitalySocketPath: gitaly_socket_path,
+        })
+      end
+    end
+  end
 end