gitlab-org--gitlab-foss/db/migrate/20191206122926_update_index...

25 lines
837 B
Ruby

# frozen_string_literal: true
class UpdateIndexForPoolRepositories < ActiveRecord::Migration[5.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
# This index is less restrictive then the one we already have, no need to
# update data.
add_concurrent_index :pool_repositories, [:source_project_id, :shard_id], unique: true
remove_concurrent_index :pool_repositories, :source_project_id
end
def down
# Not adding this index as a unique one, since while the new index existed
# we could have created multiple pool repositories for a project. In that
# case this rollback would fail.
add_concurrent_index :pool_repositories, :source_project_id
remove_concurrent_index :pool_repositories, [:source_project_id, :shard_id], unique: true
end
end