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# frozen_string_literal: true
class AddLabelRestoreForeignKeys < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
# create foreign keys
connection.foreign_keys(labels_table_name).each do |fk|
fk_options = fk.options
add_concurrent_foreign_key(backup_labels_table_name, fk.to_table, name: fk.name, column: fk_options[:column])
end
end
def down
connection.foreign_keys(backup_labels_table_name).each do |fk|
with_lock_retries do
remove_foreign_key backup_labels_table_name, name: fk.name
end
end
end
private
def labels_table_name
:labels
end
def backup_labels_table_name
:backup_labels
end
end
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