db/migrate/20180831164909_add_index_for_identifier_to_prometheus_metric.rb


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# frozen_string_literal: true

class AddIndexForIdentifierToPrometheusMetric < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    add_concurrent_index :prometheus_metrics, :identifier, unique: true
  end

  def down
    remove_concurrent_index :prometheus_metrics, :identifier, unique: true
  end
end