Default to Gitaly for 'git push' HTTP/SSH, and make Gitaly mandatory for SSH pull

changelogs/unreleased/gitaly-git-http-ssh.yml

+---
+title: Default to Gitaly for 'git push' HTTP/SSH, and make Gitaly mandatory for SSH
+  pull
+merge_request: 16586
+author:
+type: other

lib/api/helpers/internal_helpers.rb

 module API
   module Helpers
     module InternalHelpers
-      SSH_GITALY_FEATURES = {
-        'git-receive-pack' => [:ssh_receive_pack, Gitlab::GitalyClient::MigrationStatus::OPT_IN],
-        'git-upload-pack' => [:ssh_upload_pack, Gitlab::GitalyClient::MigrationStatus::OPT_OUT]
-      }.freeze
-
       attr_reader :redirected_path
 
       def wiki?
@@ -102,8 +97,14 @@ module API
 
       # Return the Gitaly Address if it is enabled
       def gitaly_payload(action)
-        feature, status = SSH_GITALY_FEATURES[action]
-        return unless feature && Gitlab::GitalyClient.feature_enabled?(feature, status: status)
+        return unless %w[git-receive-pack git-upload-pack].include?(action)
+
+        if action == 'git-receive-pack'
+          return unless Gitlab::GitalyClient.feature_enabled?(
+            :ssh_receive_pack,
+            status: Gitlab::GitalyClient::MigrationStatus::OPT_OUT
+          )
+        end
 
         {
           repository: repository.gitaly_repository,

lib/gitlab/workhorse.rb

@@ -34,7 +34,10 @@ module Gitlab
 
         feature_enabled = case action.to_s
                           when 'git_receive_pack'
-                            Gitlab::GitalyClient.feature_enabled?(:post_receive_pack)
+                            Gitlab::GitalyClient.feature_enabled?(
+                              :post_receive_pack,
+                              status: Gitlab::GitalyClient::MigrationStatus::OPT_OUT
+                            )
                           when 'git_upload_pack'
                             true
                           when 'info_refs'

spec/requests/api/internal_spec.rb

@@ -317,20 +317,6 @@ describe API::Internal do
       end
 
       context "git pull" do
-        context "gitaly disabled", :disable_gitaly do
-          it "has the correct payload" do
-            pull(key, project)
-
-            expect(response).to have_gitlab_http_status(200)
-            expect(json_response["status"]).to be_truthy
-            expect(json_response["repository_path"]).to eq(project.repository.path_to_repo)
-            expect(json_response["gl_repository"]).to eq("project-#{project.id}")
-            expect(json_response["gitaly"]).to be_nil
-            expect(user).to have_an_activity_record
-          end
-        end
-
-        context "gitaly enabled" do
         it "has the correct payload" do
           pull(key, project)
 
@@ -347,7 +333,6 @@ describe API::Internal do
           expect(user).to have_an_activity_record
         end
       end
-      end
 
       context "git push" do
         context "gitaly disabled", :disable_gitaly do