1 files changed, 36 insertions, 0 deletions
diff --git a/db/post_migrate/20210302150310_schedule_migrate_pages_to_zip_storage.rb b/db/post_migrate/20210302150310_schedule_migrate_pages_to_zip_storage.rb
new file mode 100644
index 00000000000..7f6d7ffe9b7
--- /dev/null
+++ b/db/post_migrate/20210302150310_schedule_migrate_pages_to_zip_storage.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+class ScheduleMigratePagesToZipStorage < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  MIGRATION = 'MigratePagesToZipStorage'
+  BATCH_SIZE = 10
+  BATCH_TIME = 5.minutes
+
+  disable_ddl_transaction!
+
+  class ProjectPagesMetadatum < ActiveRecord::Base
+    extend SuppressCompositePrimaryKeyWarning
+
+    include EachBatch
+
+    self.primary_key = :project_id
+    self.table_name = 'project_pages_metadata'
+    self.inheritance_column = :_type_disabled
+
+    scope :deployed, -> { where(deployed: true) }
+    scope :only_on_legacy_storage, -> { deployed.where(pages_deployment_id: nil) }
+  end
+
+  def up
+    queue_background_migration_jobs_by_range_at_intervals(
+      ProjectPagesMetadatum.only_on_legacy_storage,
+      MIGRATION,
+      BATCH_TIME,
+      batch_size: BATCH_SIZE,
+      primary_column_name: :project_id
+    )
+  end
+end