1 files changed, 72 insertions, 0 deletions
diff --git a/db/post_migrate/20180424151928_fill_file_store.rb b/db/post_migrate/20180424151928_fill_file_store.rb
new file mode 100644
index 00000000000..b41feb233be
--- /dev/null
+++ b/db/post_migrate/20180424151928_fill_file_store.rb
@@ -0,0 +1,72 @@
+class FillFileStore < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  class JobArtifact < ActiveRecord::Base
+    include EachBatch
+    self.table_name = 'ci_job_artifacts'
+    BATCH_SIZE = 10_000
+
+    def self.params_for_background_migration
+      yield self.where(file_store: nil), 'FillFileStoreJobArtifact', 5.minutes, BATCH_SIZE
+    end
+  end
+
+  class LfsObject < ActiveRecord::Base
+    include EachBatch
+    self.table_name = 'lfs_objects'
+    BATCH_SIZE = 10_000
+
+    def self.params_for_background_migration
+      yield self.where(file_store: nil), 'FillFileStoreLfsObject', 5.minutes, BATCH_SIZE
+    end
+  end
+
+  class Upload < ActiveRecord::Base
+    include EachBatch
+    self.table_name = 'uploads'
+    self.inheritance_column = :_type_disabled # Disable STI
+    BATCH_SIZE = 10_000
+
+    def self.params_for_background_migration
+      yield self.where(store: nil), 'FillStoreUpload', 5.minutes, BATCH_SIZE
+    end
+  end
+
+  def up
+    # NOTE: Schedule background migrations that fill 'NULL' value by '1'(ObjectStorage::Store::LOCAL) on `file_store`, `store` columns
+    # 
+    # Here are the target columns
+    # - ci_job_artifacts.file_store
+    # - lfs_objects.file_store
+    # - uploads.store
+
+    FillFileStore::JobArtifact.params_for_background_migration do |relation, class_name, delay_interval, batch_size|
+      queue_background_migration_jobs_by_range_at_intervals(relation,
+        class_name,
+        delay_interval,
+        batch_size: batch_size)
+    end
+
+    FillFileStore::LfsObject.params_for_background_migration do |relation, class_name, delay_interval, batch_size|
+      queue_background_migration_jobs_by_range_at_intervals(relation,
+        class_name,
+        delay_interval,
+        batch_size: batch_size)
+    end
+
+    FillFileStore::Upload.params_for_background_migration do |relation, class_name, delay_interval, batch_size|
+      queue_background_migration_jobs_by_range_at_intervals(relation,
+        class_name,
+        delay_interval,
+        batch_size: batch_size)
+    end
+  end
+
+  def down
+    # noop
+  end
+end