Fix Geo replication status for replicables with no data to sync

ee/app/models/geo_node_status.rb

@@ -404,6 +404,10 @@ class GeoNodeStatus < ApplicationRecord
     public_send("#{replicator_class.replicable_name_plural}_checksummed_in_percentage") # rubocop:disable GitlabSecurity/PublicSend
   end
 
+  def count_for(replicator_class)
+    public_send("#{replicator_class.replicable_name_plural}_count") # rubocop:disable GitlabSecurity/PublicSend
+  end
+
   def storage_shards_match?
     return true if geo_node.primary?
     return false unless storage_configuration_digest && primary_storage_digest

ee/changelogs/unreleased/298725-gitlab-ctl-promotion-preflight-checks-incorrectly-fails-with-0.yml

+---
+title: Fix Geo replication and verification status for replicables with no data to
+  sync
+merge_request: 52253
+author:
+type: fixed

ee/lib/gitlab/geo/geo_node_status_check.rb

@@ -61,45 +61,64 @@ module Gitlab
       end
 
       def replication_verification_complete?
-        success_status = [
-          current_node_status.repositories_synced_in_percentage,
-          current_node_status.repositories_checksummed_in_percentage,
-          current_node_status.wikis_synced_in_percentage,
-          current_node_status.wikis_checksummed_in_percentage,
-          current_node_status.lfs_objects_synced_in_percentage,
-          current_node_status.job_artifacts_synced_in_percentage,
-          current_node_status.attachments_synced_in_percentage,
-          current_node_status.replication_slots_used_in_percentage,
-          current_node_status.design_repositories_synced_in_percentage
-        ] + conditional_checks_status
+        checks_status =
+          legacy_replication_and_verification_checks_status +
+          replication_and_verification_checks_status +
+          conditional_replication_and_verification_checks_status
 
-        success_status.all? { |percentage| percentage == 100 }
+        checks_status.compact.all? { |percentage| percentage == 100 }
       end
 
       private
 
-      def conditional_checks_status
+      # rubocop:disable GitlabSecurity/PublicSend
+      def legacy_replication_and_verification_checks_status
+        replicables = [
+          ["repositories", Gitlab::Geo.repository_verification_enabled?],
+          ["wikis", Gitlab::Geo.repository_verification_enabled?],
+          ["lfs_objects", false],
+          ["job_artifacts", false],
+          ["attachments", false],
+          ["design_repositories", false]
+        ]
+
+        [].tap do |status|
+          replicables.each do |replicable_name, verification_enabled|
+            next unless current_node_status.public_send("#{replicable_name}_count").to_i > 0
+
+            status.push current_node_status.public_send("#{replicable_name}_synced_in_percentage")
+
+            if verification_enabled
+              status.push current_node_status.public_send("#{replicable_name}_verified_in_percentage")
+            end
+          end
+        end
+      end
+      # rubocop:enable GitlabSecurity/PublicSend
+
+      def replication_and_verification_checks_status
         [].tap do |status|
           Gitlab::Geo.enabled_replicator_classes.each do |replicator_class|
+            next unless current_node_status.count_for(replicator_class).to_i > 0
+
             status.push current_node_status.synced_in_percentage_for(replicator_class)
 
             if replicator_class.verification_enabled?
               status.push current_node_status.checksummed_in_percentage_for(replicator_class)
             end
           end
-
-          if Gitlab::Geo.repository_verification_enabled?
-            status.push current_node_status.repositories_verified_in_percentage
-            status.push current_node_status.wikis_verified_in_percentage
         end
-
-          if ::Geo::ContainerRepositoryRegistry.replication_enabled?
-            status.push current_node_status.container_repositories_synced_in_percentage
       end
 
-          if Gitlab::CurrentSettings.repository_checks_enabled
+      def conditional_replication_and_verification_checks_status
+        [].tap do |status|
+          if Gitlab::CurrentSettings.repository_checks_enabled && current_node_status.repositories_count.to_i > 0
             status.push current_node_status.repositories_checked_in_percentage
           end
+
+          if ::Geo::ContainerRepositoryRegistry.replication_enabled? && current_node_status.container_repositories_count.to_i > 0
+            status.push current_node_status.container_repositories_synced_in_percentage
+          end
         end
       end
 

ee/spec/lib/gitlab/geo/geo_node_status_check_spec.rb

@@ -3,7 +3,8 @@
 require 'spec_helper'
 
 RSpec.describe Gitlab::Geo::GeoNodeStatusCheck do
-  let(:current_node) { create(:geo_node) }
+  let_it_be(:current_node) { create(:geo_node) }
+
   let(:geo_node_status) do
     build(:geo_node_status, :replicated_and_verified, geo_node: current_node)
   end
@@ -34,7 +35,7 @@ RSpec.describe Gitlab::Geo::GeoNodeStatusCheck do
       end
     end
 
-    context 'Replicators' do
+    context 'replicators' do
       let(:replicators) { Gitlab::Geo.enabled_replicator_classes }
 
       context 'replication' do
@@ -77,7 +78,23 @@ RSpec.describe Gitlab::Geo::GeoNodeStatusCheck do
     end
 
     context 'when replication is up-to-date' do
-      it 'returns true' do
+      before do
+        allow(Gitlab::CurrentSettings).to receive(:repository_checks_enabled).and_return(true)
+      end
+
+      it 'returns true when all replicables have data to sync' do
+        expect(subject.replication_verification_complete?).to be_truthy
+      end
+
+      it 'returns true when some replicables does not have data to sync' do
+        geo_node_status.update!(
+          container_repositories_count: 0,
+          lfs_objects_count: 0,
+          package_files_count: 0,
+          repositories_count: 0,
+          wikis_count: 0
+        )
+
         expect(subject.replication_verification_complete?).to be_truthy
       end
     end