Add support for namespaces to Pages internal API61927-pages-namespaces-virtual-domain

Introduce new `project_pages_metadata` table, insert new record on
project creation. Update its `depoyed` flag when pages are
deployed/removed.

Return only these projects from namespace that have pages marked as
deployed. On-demand and mass data migration will handled in subsequent
commits.

Related to https://gitlab.com/gitlab-org/gitlab-ee/issues/28781.

1 files changed, 24 insertions, 2 deletions

diff --git a/app/models/project.rb b/app/models/project.rb
index 18afccf7ddc..1115b370448 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -104,6 +104,9 @@ class Project < ApplicationRecord
     unless: :ci_cd_settings,
     if: proc { ProjectCiCdSetting.available? }
 
+  after_create :create_project_pages_metadatum,
+    unless: :project_pages_metadatum
+
   after_create :set_timestamps_for_create
   after_update :update_forks_visibility_level
 
@@ -295,6 +298,8 @@ class Project < ApplicationRecord
 
   has_many :external_pull_requests, inverse_of: :project
 
+  has_one :project_pages_metadatum, inverse_of: :project
+
   accepts_nested_attributes_for :variables, allow_destroy: true
   accepts_nested_attributes_for :project_feature, update_only: true
   accepts_nested_attributes_for :import_data
@@ -425,6 +430,10 @@ class Project < ApplicationRecord
     .where(project_ci_cd_settings: { group_runners_enabled: true })
   end
 
+  scope :with_pages_deployed, -> do
+    where('EXISTS (?)', ProjectPagesMetadatum.project_scoped.deployed.select(1))
+  end
+
   enum auto_cancel_pending_pipelines: { disabled: 0, enabled: 1 }
 
   chronic_duration_attr :build_timeout_human_readable, :build_timeout,
@@ -1643,6 +1652,10 @@ class Project < ApplicationRecord
     "#{url}/#{url_path}"
   end
 
+  def pages_group_root?
+    pages_group_url == pages_url
+  end
+
   def pages_subdomain
     full_path.partition('/').first
   end
@@ -1681,6 +1694,7 @@ class Project < ApplicationRecord
     # Projects with a missing namespace cannot have their pages removed
     return unless namespace
 
+    mark_pages_as_not_deployed unless destroyed?
     ::Projects::UpdatePagesConfigurationService.new(self).execute
 
     # 1. We rename pages to temporary directory
@@ -1694,6 +1708,14 @@ class Project < ApplicationRecord
   end
   # rubocop: enable CodeReuse/ServiceClass
 
+  def mark_pages_as_deployed
+    ProjectPagesMetadatum.update_pages_deployed(self, true)
+  end
+
+  def mark_pages_as_not_deployed
+    ProjectPagesMetadatum.update_pages_deployed(self, false)
+  end
+
   # rubocop:disable Gitlab/RailsLogger
   def write_repository_config(gl_full_path: full_path)
     # We'd need to keep track of project full path otherwise directory tree
@@ -2213,8 +2235,8 @@ class Project < ApplicationRecord
     members.maintainers.order_recent_sign_in.limit(ACCESS_REQUEST_APPROVERS_TO_BE_NOTIFIED_LIMIT)
   end
 
-  def pages_lookup_path(domain: nil)
-    Pages::LookupPath.new(self, domain: domain)
+  def pages_lookup_path(trim_prefix: nil, domain: nil)
+    Pages::LookupPath.new(self, trim_prefix: trim_prefix, domain: domain)
   end
 
   private